ClearSign Technologies - Earnings Call - Q2 2025

Executive Summary

• Q2 2025 revenue was $0.133M, up from $0.045M in Q2 2024, driven by spare parts and a boiler burner sale; net loss narrowed by ~$0.2M YoY as R&D fell ~$0.155M. Cash was $12.3M and shares outstanding were 52.4M at quarter-end.
• Versus S&P Global consensus, CLIR delivered a mixed print: revenue missed materially (estimated $0.644M* vs actual $0.133M), while EPS (-$0.03) and EBITDA (-$1.79M*) beat estimates on lower operating expense and collections timing.
• Execution milestones advanced: LA refinery 20-burner installation starting imminently, and the Gulf Coast 26-burner project moved into manufacturing with startup now expected in early 2026 (earlier than the original end-2026 timeline).
• Catalysts: near-term start-ups (LA refinery, M-Series M1 in Colorado), sensor deployments at a supermajor and in LA, flare systems pipeline expansion (value of proposals ~10x YoY), and Zeeco co-brand rollout, all of which broaden addressable markets.

What Went Well and What Went Wrong

• What Went Well

  • “Significant progress” on the two multi-heater process burner projects; LA 20-burner install starting within weeks and Gulf Coast 26-burner test criteria met, moving to manufacturing with shipment this year.
  • M-Series process burner demonstrated SCR-level NOx and improved heat transfer; second M1 sale to Devco due to start later this year; developing a detuned M25 to target a larger midstream segment.
  • Flare solutions gaining traction: repeat client added a second engineering order, broader systems proposals emerging with unit values ~$0.5–$1.0M; value of flare/systems proposals ~10x YoY.

• What Went Wrong

  • Revenue light at $0.133M with limited order announcements amid macro/tariff uncertainty delaying timelines; management acknowledged perceived lack of progress despite strong quote activity.
  • Boiler burner market in California remained slow; execution shift toward midstream and process burners required to offset cyclicality.
  • Nasdaq minimum bid price deficiency notice (April 2025) underscores market risk and potential need for remedial actions if compliance not regained by September 29, 2025.

Transcript

Speaker 1

Good afternoon. Welcome to the ClearSign Technologies Corporation 2Q 2025 earnings conference call. At this time, all participants have been placed on a listen-only mode, and we will open the floor for your questions and comments after the presentation. Should you require operator assistance during today's call, you may press *0 on your telephone keypad. It is now my pleasure to turn the floor over to your host, Matthew Selinger. Please go ahead.

Speaker 2

Good afternoon, and thank you, operator. Welcome everyone to the ClearSign Technologies Corporation second quarter 2025 results conference call. During this conference call, the company will make forward-looking statements. Any statement that is not a statement of historical fact is a forward-looking statement. This includes remarks about the company's projections, expectations, plans, beliefs, and prospects. These statements are based on judgments and analysis as of the date of this conference call and are subject to numerous important risks and uncertainties that could cause actual results to differ materially from those described in the forward-looking statements.

The risks and uncertainties associated with the forward-looking statements made in this conference call include, but are not limited to, whether field testing and sales of ClearSign products will be successfully completed, whether ClearSign will be successful in expanding the market for its products, and other risks that are described in ClearSign's filings with the SEC, including those discussed under the risk factors section of the annual report on Form 10-K for the period ended December 31, 2024. Except as required by law, ClearSign assumes no responsibility to update these forward-looking statements to reflect future events or actual outcomes and does not intend to do so. On the call with me today are Jim Deller, ClearSign's Chief Executive Officer, and Brent Hinds, ClearSign's Chief Financial Officer. At this point in the call, I would like to turn the call over to Brent Hinds. Brent, please go ahead.

Speaker 3

Thank you, Matthew, and thank you to everyone joining us here today. Before I begin, I'd like to note that our financial results for Form 10-Q were filed today with the SEC. With that, I'd like to give an overview of the financials for the second quarter of 2025. For the second quarter of 2025, the company recognized approximately $133,000 in revenues compared to $45,000 in the same period in 2024. This year-over-year increase in revenues was driven in large spare parts orders to our existing customers and a boiler burner sale to our existing customer. For the full income statement, our net loss decreased by approximately $200,000 compared to the same period in 2024. This year-over-year decrease was predominantly driven by a $155,000 reduction in R&D expenses as compared to the same period in 2024. Our decreased R&D expense was driven in large part by reduced product development work.

I'd like to shift the focus to cash. Our net cash used in operations for the second quarter was approximately $511,000 compared to approximately $1.5 million for the same period in 2024. This million-dollar favorable year-over-year reduction was predominantly driven by customer cash collections during the quarter. As of June 30, 2025, we had approximately $12.3 million in cash and cash equivalents, with approximately 52.4 million shares of common stock outstanding. I want to explain our registration statement on Form S-1 that was filed on Tuesday, August 12, 2025. This filing was simply an administrative task to re-register our outstanding redeemable warrants issued in our underwritten public offering in April 2024. It is important to note we are not offering or selling any new securities in this filing. From an overall financial perspective, we believe our current working capital positions us well to scale our business.

We also believe our working capital gives our customers and suppliers confidence to do business with us in the long term. With that, I'd like to turn the call over to our CEO, Jim Deller. Jim?

Speaker 0

Thank you, Brent, for the financial overview. As always, I'd like to thank everyone for joining us on the call today and your interest in ClearSign. For the call today, Matthew will lead a question and answer session where we will go through the different business units, much like our previous calls. We will end with an outlook for the rest of 2025 and then open up the call for question and answer from our investors. Many of you may have seen this, but you can send questions in ahead of time to our investor relations at [email protected]. With that, Matthew?

Speaker 2

Great, Jim. Thank you ahead of time to our investors that have sent in questions. We really do appreciate that. It helps us kind of formulate some of the path of the materials that we'll go over here. Jim, very recently there have been some announcements about board transitions over the last couple of months. Is this anything to be concerned about?

Speaker 0

The short answer is no. A lot of this has been covered in previous calls, so I won't go over that. A quick update, leading up to the last AGM, we had one of our prior directors step down. Following the AGM, we did dissolve the special committee, and following that, an additional two of our prior directors did resign. That enabled us to reduce the board size back down to five, which leaves us with one position open that we will fill in due course, but there's no rush to do that. What I can say is the board has been reconstituted with new members who are energized to help ClearSign and the company to grow in the future. From my own personal perspective, this has been significant changes. I am very pleased with the current board situation. I'm really looking forward to the future.

Speaker 2

Great. With that housekeeping done, Jim, it's been about three months since our last call. Frankly, the company's been quiet in terms of news. With that, there seems to be a perceived impression of a lack of progress, right, with a lack of news. Can you talk about what's been going on kind of behind the scenes that people don't see day to day?

Speaker 0

Certainly. I understand there has not been a lot of order announcing press releases out. There has been significant uncertainty in the market. I know orders have gone away, but we have seen timelines delayed. We get to the other major. We have had a lot of very significant work actually going on. I think the majors, we have two very large process burner orders that are for household name refiners and chemical companies. The first of those, the 20 burner order out in California, we have been working on that project. We have actually been out on that job site over the last week overseeing the installation. That project finally is about to start up, we believe, in the next couple of weeks. We are very much looking forward to getting that installation up and running. That will be a very significant reference for us.

From the time of what we have been doing, the 26 burner order for the Gulf Coast chemical company, we have gone through the testing on that. This was a technology stretching project. We believe we have met all the requirements. We are through the burner testing phase. We met all the criteria. We are waiting on a couple of signatures to authorize us to move into the manufacturing phase, but we expect to be doing that shortly. We expect to have those burners built and shipped this year, which will drive the revenue for that project. Just a note on that project, the original timeline was for those burners to be installed and started up by the end of 2026. The Texas Commission on Environmental Quality has extended the timeline that client has to get the heaters up with the new technology.

I believe right now that startup will be early 2026. I do not have an exact date at this time. Generally for the period, the quote work has been strong. We have actually spent significant time as well developing our new products, especially focused on our diversification initiative.

Speaker 2

Okay. Fantastic. You said developing new projects. There was an announcement very recently about an advanced engineering order. To some people, that might be kind of nebulous. You know, what does that mean, kind of advanced engineering? Could you give more color about that announcement we just put out?

Speaker 0

I can. For title, this announcement was put out August 7th. Right. We are a technology company. We have world-level engineers and tools like a computer modeling capability that enables us to bring new products to market and to push the technology forwards. A big part of doing that is always getting the first adopter customers to take these new products and install them in their equipment to get that first operational reference out in the field. To be frank, that was the reason why we put this announcement out. The announcement is for the engineering. We have a customer who is looking for us to help them with the productivity from one of the heaters. We have the capability to do that. We're able to explain what we're doing.

This order was for the computer modeling for us to basically enhance, it's already got ClearSign burners, but for us to enhance our own burner technology to enable their furnaces to operate more effectively to meet their needs. This was driven by a customer demand. It gave us the chance to develop new technology. Assuming everything goes forward, to actually get an installation that solves the customer's problem, and for us, allows us to bring a new technology or an enhancement to our own technology to market at the same time.

Speaker 2

It is probably good to emphasize that this isn't an R&D project. I know, to dovetail on what Brent said, R&D spending was actually down. This is an actual order from an existing client, is that correct, and a previous client?

Speaker 0

Yeah. This has been a very frequent client of ours that we've got a very good relationship with. They came to us with a challenge that they're having to increase the throughput of one of their heaters. This order and this technology is something that we are working with them to deliver to them to solve that problem of theirs.

Speaker 2

Okay. Fantastic. We're in August 2025. Approximately two years ago, back in August 2023, there was a U.S. Department of Energy hydrogen burner development project. Can you give a status update of where that project's at today?

Speaker 0

Yes, I can. I think the first thing, as you noted, the order was, or the grant was received in August. Two years from that date is actually now. We do have an extension to that project. That project is going ahead. It's actually in the final stages. It's progressing very well. The culmination of this project is we have a brand new burner. We have a large burner and a small burner designed. They are in manufacture right now and scheduled for installation and demonstration in the Zeeco test facility in the coming months. Just to add to that, I'm actually very excited about this because these burners give us the ability to operate through the range of the refinery customer fuel gases. We've received a lot of interest from the industry, from household name end users in these burners.

We are in discussions with them to actually come in and see this witness testing of these U.S. Department of Energy burners in the Zeeco test facility.

Speaker 2

This project is getting industry attention as well.

Speaker 0

Very much so, yes.

Speaker 2

Yeah. That's exciting to hear. The other topic I want to move into, and it probably on top of a lot of investors' minds, is you know we had an exciting development back in December, and then the co-branding launched a few months after that, just back in March. This was the agreement with Zeeco to start marketing and selling the co-branded burners. Now, you've previously said that this is going to take some time to ramp up, maybe 9 to 12 months. Can you give any color on kind of the relationship and what you're hearing from them?

Speaker 0

Yes, certainly. I mean, at a high level, we work with Zeeco almost daily from their marketing team and their sales team, obviously through to their engineering and their testing team. They are just minutes away from our office. The sales team are out promoting our burners. We've got that feedback. We've worked with them and developed their marketing materials. We've recently, you know, we do follow up with them. They are pursuing ClearSign opportunities with their customers. As for a lot of the opportunities that we chase in general, whether it's through Zeeco or through our other channels, or even directly, they do take some time. There's nothing through to the point where we've got a quote to pursue to an order yet, but they are pursuing orders and talking to the customers about the Zeeco ClearSign burners.

Speaker 2

Great. Okay. I'd like to shift to the M-Series product line, which we focused the past couple of calls, I think, fairly extensively. This product line is focused on the midstream. When it was released, there was an initial flurry of orders, and then I believe some additional inquiries and quotes. What are we seeing here with this product line?

Speaker 0

That has continued. We've continued to see strong interest from the midstream sector in general, both for the M-Series and outside of that. The first installation we had is into a Tulsa heater midstream heater down on the U.S. Gulf Coast. That continues to operate flawlessly. The most recent M1 that we've sold has gone to another heater manufacturer, Devco. That is due to start up later this year in the coming months. The inquiries for the M1 burner have continued to be strong. In general, the midstream industry has been a very buoyant industry for us. We've had a lot of feedback from our customers and others we've talked to in the industry that there's actually another market within the midstream industry for us at a slightly higher NOx level. It'll be a reduced price burner, a reduced scope.

There appears to be a gap in the market that I believe is going to be very good for ClearSign. We're marketing this as an M25 burner that's going to be developed from the M1 to meet that new need of the customers. We've had a number of inquiries for it. We've had a lot of customers asking us, do we have a burner product to help them in this slightly not-so-low NOx market? We have a product out. We've got quotes out. I'm actually very excited about what this will bring for ClearSign. I think it could really get us into a whole new segment of the market.

Speaker 2

Let me explore that briefly. M25, would that be, for lack of a better term, kind of a detuned version of maybe the M1?

Speaker 0

Yes. The M1 simply is a single-digit NOx burner that is perfectly suited for the customers that have no other alternative than putting an SCR on the heater. It's a very high-value product that solves a high-technology need for the customers. What we're seeing is that product is not needed everywhere, and there is a substantial market that needs a good low NOx burner, but not one of that pedigree. There appears to be an opportunity for us in the market where we can provide a burner to meet that slightly lower spec need as well. I believe this is actually a much bigger volume part of the market. That's why I'm so excited because we've got to adapt ClearSign. We have products that make sense in all of the combustion technology areas that make sense for us.

I think just streamlining only of that very high-tech, ultra-low NOx segment isn't in our best interest when we have a much bigger market that we can add to our portfolio. This is a targeted product for a slightly detuned burner for the midstream market.

Speaker 2

Yeah, I think we might have referred to it on a previous call, some analogy of the fact that instead of needing a Ferrari, maybe you need a Ford F-150.

Speaker 0

Yeah, we'd love to sell Ferraris, but there's a whole lot of people who want a Ford F-150.

Speaker 2

Yeah. Got it. Okay. On the last call, we discussed flares having a resurgence of interest in our target markets. What's the status of those orders, and has this kind of resurgence of interest remained?

Speaker 0

It has definitely remained. It's not, I'll expand this. I've talked in the past also about our systems projects, which will roll in really fast onto the players. Getting back specifically to the flare burners first, our first of the new flare design is out in the field waiting to be installed. We're expecting to be out there and having that installed later on this year. In addition, we have a second order from that same client that is currently in the first phase, which is the computer modeling. We're expecting that to roll into a detailed engineering order in Q4. Of course, we're expecting from that an equipment supply order to come out early into 2026. The client that's got the first has already come back to us to progress the second. What we're also seeing is those burners go into existing flares.

They're retrofitting the burner part of existing flare bodies. We're also getting our inquiries not just to supply a replacement burner, but to supply the entire flare system. That would be the burner and including the surrounding vessel and structure that goes with it, which expands our scope greatly into what we're starting to call a system rather than just a burner. We're pursuing those. When we look at what we're doing with the flare, I think the crux of the technology is we have the ability to burn a very hard-to-burn fuel gas. Typically, in the industry, you would have to buy natural gas to help you burn that hard-to-burn gas to make it burn completely. These are waste disposal systems. We can burn that without the clients having to purchase the additional natural gas.

That is a significant cost savings for them, which gives us another value for our customer. We are able to then build on that in other applications and supply complete systems that would look like a thermal oxidizer as an example. We have good traction in discussions about that type of product. I'll be clear for everyone, these are proposals. These are not orders. There's no guarantee of the timeline or that these will come in. We have sufficient traction and engagement with the customers to talk about these that we're actually getting quite excited and see this as a real likely development of the ClearSign business. To put some numbers around this, the flare replacement burners with the engineering and the typical supply are going to be in the region of $200,000 to $300,000.

When we get into the systems projects, whether it's the flare style or the thermal oxidizer style, each unit there will be in the region of $500,000 to $1 million. It's a significant enhancement to the ClearSign product line. Just to look at what that does, and I'm talking about the value of proposals that are given out. We've talked a little about this on previous calls. Looking at the flare proposals year to date this time last year compared to this year, because of the increased interest and especially the increased scope of these orders, we're looking at about 10x the value of proposals out for this whole flare and systems product line together.

Speaker 2

Okay. Great. I'll hold you to that. Jim, I do have a question about kind of proposals and pipelines. I will circle back to that here later.

Speaker 0

Yeah, certainly.

Speaker 2

Yeah. You know, previously, we also announced that we're going to be installing the first commercial installation of the sensor project, the ClearSign Eye, in a refinery of a super major. You know, where is that project and any other color with this product line?

Speaker 0

Certainly. First of all, the sensing technology we have, just for anyone not familiar, allows the presence of a flame on the pilot in a burner to be confirmed. This is a critical part of a lot of the control systems that go into refinery heaters. The order we have is for a super major household name refiner, one of their refineries down on the Texas Gulf Coast. They have asked us to provide these sensors on a demonstration basis to fit onto every burner in one of their heaters. Those sensors are almost complete in fabrication. They'll be ready to ship later this month. We're actually really just waiting on the client to confirm their installation schedule. In terms of development, we're expecting about a three to six-month evaluation period for them to get a good feel for the reliability and the performance of these sensors.

Incidentally, we also have a request for a commercial proposal for another heater's worth of these sensors for that same refiner for a different facility. We expect that to progress. It's really parked until we've gone through the evaluation period of that first installation. In parallel, we have another installation of the sensors going into a Los Angeles refining, this time for them to be fitted on our own burners in a heater down in LA. Those will be out later on this year. That will give us a demonstration site in LA, one in Texas, one on regular burners, and one on ClearSign burners. In fact, the DOE burner that we talked about shortly before, one of the end user clients coming in or planning to come in to witness that burner has also asked that there be a chance for them to see our sensor in operation.

We're building one that we'll install on that burner operating in the Zeeco test facility and to be able to show that to whoever comes in to see those burners, in addition to showing that to Zeeco as one of the world's biggest burner manufacturers.

Speaker 2

That's fantastic. Yeah, basically, there's going to be multiple demonstrations of the sensor in the field. Is that correct?

Speaker 0

By the end of this year, we should have, or we expect to have, two complete heaters of burners fitted with this sensor in commercial operation and the demonstration unit in the Zeeco test facility.

Speaker 2

Is this product helping demonstrate to industry that we are a technology solutions provider, and is this opening other doors for us?

Speaker 0

I think that's fair. Actually, as you bring that up, one point, we've had one major refiner customer actually approach us to meet with their engineering team and present the sensor that actually led to conversations about M1 burners for their midstream heaters. I think definitely the more we broaden our portfolio of products, the more opportunities we get to go and make sales calls and to answer questions. As you do that, of course, you talk about everything you can do and you get to find out the multiple ways you can help the customers more than just from one specific reason that they brought you in. Having more different technologies to talk about is definitely a help from a sales perspective.

Speaker 2

Okay. Jim, I told you I was going to hold you to this, and I think it's a good time to segue now about pipeline. In the last call, I think you were able to quantify the pipeline saying at that time it was 2x the amount of proposals from the previous year at about 5x the project value from a year previous. Has that changed in the three months since the last call?

Speaker 0

Yeah. I've actually gone back and looked at this data. That level is held. We've been consistently receiving quotes and proposing projects at that rate. What's exciting is some of these now are requests for burners for super major refineries for typical projects where we're actually being included as a requested technology to evaluate by the heater manufacturers going to those projects. Rather than us finding a client in need, now we've got clients building new heaters that are asking for our technology to be considered in the proposal of those new heaters. That is a big step forward for ClearSign, something I'm very excited about.

Speaker 2

All right. We're halfway through the year. What do you see looking forward to the rest of the year? What do you feel will be potential market catalysts? When I say market catalysts, I'm talking about industry, not necessarily financial.

Speaker 0

We've got a lot that's on the horizon. I mean, we've talked to several of them already. The LA heater startup, we've been waiting for this heater to start up. It's been delayed and delayed now for over a year. The burner's been on the ground. Getting that up and started is going to be a very significant reference. This is a major refinery. It is two major heaters in that refinery. It is way bigger than any other installation that we've had before, and that will be coming up in the next month. We'll be out there on the job there starting that up. I think secondly, the Gulf Coast order, the heater manufacturer involved in that order of a while ago is probably the leading heater manufacturer or certainly one of them in the world.

Just the knowledge of what we've demonstrated in those burners and being able to prove our burners can do is very significant. As we go through the manufacturing delivery of those burners in the startup early next year, those two references are the type of projects that we've been chasing for years to get references out of that significance in the market. On top of that, I mentioned we've got our new technology flares out. The next one's about to start up. I think we've got a reason to be quite expecting that we will have a systems project coming up on the horizon. Just showing that we can deliver technology of that scale will be really big.

The M1, the second one started, and particularly the getting into that detuned higher volume M25 market will be, I think, significant for ClearSign from a revenue perspective and just getting into a much broader market than the low NOx niche. There's a lot that we're looking forward to that I believe has really got the potential to trigger the growth of ClearSign. Just to know, and I'm not saying these with any quantifiable expectation on the industry, but there is the Texas Commission on Environmental Quality is talking to them. They're expecting the regulations in Texas to be changed, and the clients there may be facing some fees for low NOx burners that may generate the need or change their finances to lead to more opportunities for ClearSign to help them down.

I don't know what the effect of that will be, but it's something on the horizon that's going to affect probably our biggest potential market down there on the U.S. Gulf Coast. In general, from talking to customers, we've seen uncertainty. I think the tariffs, what we've heard is there's also a concern of reciprocal tariffs that's causing delays, also uncertainty about the need for environmental requirements that's having a delaying effect on the orders. I do believe that things will settle down. We'll get back close to the normal. To call it glass half full or glass half empty, but I think it's that. I'm actually looking forward to that smoothing down, and I believe that that will have a positive impact for ClearSign as we get back close to the normal.

Speaker 2

Okay. Before we segue into opening up for other questions from investors, do you have any other commentary you'd like to give before we move into the Q&A for investors?

Speaker 0

Yes, I would. I mean, just speaking for myself, I am actually very encouraged about the startups and the references and the technology developments that we've made over the long term, especially the developments and advancements we've made over the last few months. I want to recognize just the team here at ClearSign and the engineering. This has taken a lot of work. It's not a nine-to-five job. This is something that has taken focus and dedication to get through and to get done. At least for myself and anybody else, I'd like to recognize the effort that the engineering team here at ClearSign have put into getting these new technologies out and to market in the form that they are today. I really believe that these are going to set the foundation for the growth of ClearSign in the future.

I just I'd like to personally thank you for the team and really just to recognize the effort that they've put in over the last few months.

Speaker 2

Great. It sounds like, again, the continuation, the expanding product line. We talked about it at the last call, expanding channels, right? Hopefully, we'll start to see some of that coming more to market traction here very soon.

Speaker 0

Absolutely. Great.

Speaker 2

Great. With that, we will open it up, operator, for some other questions.

Speaker 1

Certainly. Ladies and gentlemen, the floor is now open for questions. If you would like to join the queue to ask a question at this time, please press star one on your telephone keypad. We do ask, if listening on speakerphone today, that you pick up your handset while asking your question to provide optimal sound quality. Once again, please press star one on your keypad at this time if you wish to join the queue to ask a question. Please hold while we pull for questions, and I'll pass the floor back to the management team.

Speaker 2

Great, operator. I'm going to go ahead and read one of the first questions here. There are a lot of questions about, Jim, a lot of questions here about Zeeco. Maybe it makes best sense here is, you know, who is Zeeco and what is their motivation, you feel, to work with ClearSign?

Speaker 0

Yeah. I think that's a very observant question. Zeeco is a very big factor in the ClearSign business. To be frank, we moved the business from Seattle to Tulsa, and a very big part of the reason we did that was to be in the center of the industry and to be very close to the partners that we need to work with. Zeeco is definitely the leading amongst those. For those of you who don't know, Zeeco is a global combustion equipment company. Their revenues are somewhere in the order of $1 billion with a B. They're present on every continent. They manufacture around the world. Very importantly for us, they have, I believe, the world's biggest industrial test facility that is here on the outskirts of Tulsa, just minutes away from our ClearSign office.

They also have a very large and sophisticated manufacturing capability that has been accredited and is known throughout the refining and petrochemical industry. They're a very trusted manufacturer. Both of those are essential elements of a combustion equipment provider. For ClearSign, working with Zeeco provided us a way to bring our technology to market with the credentials and these must-have capabilities that are provided through this relationship with Zeeco. When we set the agreement up with Zeeco, the mission was very clear. We wanted to come up with an arrangement that was going to be very profitable and had enormous potential for both companies. Bear in mind, Zeeco is a billion-dollar company. We had to be relevant to them. The ClearSign product line in the NOx levels that we provide basically extends the Zeeco portfolio.

It puts another product in their product line and extends the capabilities of burners offered under the Zeeco name down into the range that actually compete with a selective catalytic reduction system, which is the other alternative in the market. It gives ClearSign additional capability. When they got to the point that they agreed to basically carry the ClearSign technology under the Zeeco name, that was a huge milestone for us. It introduced us to the Zeeco sales team and very much, I believe, will put ClearSign on the map for a much bigger audience within the market going forwards. For Zeeco, you're asking what's in it for Zeeco. Clearly, there is a financial incentive. There's a lot of margin in the high-end ClearSign products sufficient for a mutually beneficial arrangement with Zeeco.

That is their motivation for promoting and growing the ClearSign business in addition to the extra commercial conversations that they can enter into because of the extended capability of the Zeeco range as that includes the ClearSign technology.

Speaker 2

Great. Operator, can we go ahead and prompt again?

Speaker 1

Certainly. As a reminder, if you wish to join the queue to ask a question at this time, please press star one on your keypad to join the queue. You will hear a brief tone to indicate you've successfully joined the queue. Once again, please press star one on your keypad at this time if you wish to join the queue to ask a question.

Speaker 2

Great. Thank you. In the meantime, operator, I'll go ahead and address another question here we had emailed in. Jim, we do have a number of questions about CFD. How is the company, and I know you addressed this in some of your pre-prepared comments, but how is the company utilizing CFD for some of the current product lines in the day-to-day business? Maybe even explain what CFD is.

Speaker 0

I think the latter is important. CFD is obviously an acronym. It's Computational Fluid Dynamic Modeling, is the full name. In essence, what this is, is it is a simulation or a model that we can build on a computer that allows us to predict the flow of gases and the interactions and turbulence and chemistry and the heat dissipation and thermal transference, basically all of the physical things that occur in the complex flow field inside a heater and inside a burner. It allows us to predict that. If you think of a combustion system, the CFD basically gives the ability to have a computer-generated MRI that allows us to see what's going on inside the heater and inside the burner. From a technology developer, having that insight is incredibly important. It allows us to optimize our designs very quickly.

In terms of product development, the first stages obviously are coming up with the concepts and the theory from the engineering team, but we can then translate that into computer models and compare the different proposals and systems, see how they're working, optimize them rapidly. The final stage will be taking that final version out and building a physical version for testing or first installation. For ClearSign, we truly have world-class engineers and we have a world-class computer modeling capability. I believe this can be seen. We have burners like the M1 that was developed and taken from the CFD modeling out and built and installed in a heater and worked without any modification.

The order that we announced last week, August 7, was enabled by our ability, again, to model and to get that detailed information on the flow fields inside a heater and actually develop new technology given the insights that that computer modeling can provide. It is a significant part of what we do. Recruiting Matt Martin, our Chief Technology Officer, was a great cue for ClearSign. He brings that world-class skill and experience to ClearSign, and he has become a very big part of the team here.

Speaker 2

Okay. I've got another one. This one is probably for you, Brent, and just came in. Can you confirm the sequential cash balance, maybe from Q1 to Q2?

Speaker 3

Yeah. Great question. For Q1, our cash and cash equivalents was about $12.8 million. In Q2, it's about $12.3 million. That is a $500,000 difference that's cash used in operations. The difference there is really driven by customer cash collections. As we've said in the past, you know, cash doesn't always go after revenue recognition. It comes in before revenue recognition. A substantial amount of cash from projects in process and projects that we've completed was delivered in Q2.

Speaker 0

Great. Hey, Matt, if I can, I'd like to just add a little to that. Brent can speak at that turn, but we announced the major orders that we get. What is part of these numbers? We do receive a lot of aftermarket orders, service orders, engineering orders for, you know, I've talked about computer modeling. We don't announce those orders, but we do have a fairly steady stream. Those orders are also quick turning. Often, they're building replacement parts for equipment we have in the field, or they are engineering studies that we can turn quite quickly. We do have ongoing work. Even though, back to the start of the call, the press releases we've put out, there's not been a lot of orders announced in the last few months. We have received orders on our own that are less significant.

There is still significant work being done and orders and receipts being received.

Speaker 2

Great. With that, operator, I'll turn it back to you.

Speaker 1

Certainly. As a last reminder to the audience, if you would like to join the queue to ask a question at this time, please press star one on your keypad. Once again, if you wish to ask a question, we invite you to press star one on your keypad at this time. I'm seeing no questions in queue at this time. As such, I would now like to pass the floor back to the Chief Executive Officer of ClearSign Technologies Corporation, Colin James Deller, for closing remarks.

Speaker 0

Thank you, operator. Thank you, everyone, for your interest and taking the time to participate today. We look forward to updating you regarding our developments and speaking with you on our next call. For those of you interested, we will be at the H.C. Wainwright Conference next month in New York City. In the meantime, please keep checking in for developments on our website. For more behind-the-scenes updates, please follow us on LinkedIn. Thank you very much, and we look forward to speaking to you next time.

Speaker 1

Thank you. This does conclude today's conference call. You may disconnect your lines at this time and have a wonderful day. Thank you once again for your participation.