Where HVAC contractors lose money
6 things cost HVAC contractors money without ever becoming a line item, and each one traces to a step you can install. HVAC contractors average 24% gross margin, 16% overhead and 8% net profit at $1M–$5M of revenue. The CFOS target at that size is 26.5% gross margin, 15% overhead and 11.5% net, and the 3.5 points left on the table is where those mechanisms live. Figures for all 7 revenue bands are in the table below.
HVAC ranks 4th of 7 in mechanical and life safety on net profit, and it has heavier overhead than the 48-trade average. Here is every figure, across all 7 revenue bands.
HVAC by revenue band
| Metric | $1M–$5M | $5M–$10M | $10M–$25M | $25M–$50MModeled | $50M–$100MModeled | $100M–$500MModeled | $500M+Modeled | CFOS target at $1M–$5M |
|---|---|---|---|---|---|---|---|---|
| Overhead | 16% | 15% | 14% | 13% | 12% | 11% | 10% | 15% |
| Gross margin | 24% | 25% | 26% | 27% | 29% | 30% | 32% | 26.5% |
| Net profit | 8% | 10% | 12% | 14% | 17% | 19% | 22% | 11.5% |
| Metric | $1M–$5M | $5M–$10M | $10M–$25M |
|---|---|---|---|
| Overhead | 15% | 14% | 13% |
| Gross margin | 26.5% | 27.5% | 28.5% |
| Net profit | 11.5% | 13.5% | 15.5% |
Modeled extension of the survey curve, not reconciled against the licensed CFMA Benchmarker. That applies to the 4 bands above $10M to $25M, and no CFOS target is published for them.
Gross margin and overhead come from CFMA, Jones Maresca and SPM's own trade data, because those are the figures those sources report by trade and size. Net profit is calculated from them as gross margin minus overhead, so the three rows tie. That makes it an operating profit figure: what is left before interest, other income and expense, and the tax planning choices owners make, such as bonuses, depreciation methods and retirement contributions.
Surveys report net income before taxes after those items, so a reported net can run below the figure here. At the typical contractor the difference is small: CFMA's 2025 medians are 7.1 percent before interest and taxes and 6.7 percent net income before taxes. It grows with size. Against the separate measured net profit dataset, the calculated net runs 0.8 points higher at $1M to $5M, 2.2 points at $5M to $10M and 3.5 points at $10M to $25M, because the gross margin and overhead rows change faster with size than reported net profit does.
Above the $10M to $25M band the gross margin and overhead rows are a modeled extension of the same curves. They have not been reconciled against the licensed CFMA Benchmarker, and the calculated net there runs well above survey medians, so read those bands as a model and not as a survey result.
SPM The Construction CFO. SPM Trade Benchmark Reference: HVAC. 2026. Sulphur Prairie Management, LLC. https://runoncfos.com/trades/hvac. CC BY 4.0.
Figures on this page were last revised 2026-08-21. Published under CC BY 4.0, which permits reuse of any figure here, including commercially, as long as the credit above travels with it. The same figures in machine-readable form: /benchmarks.json.
Trade level gross margin and overhead compiled by SPM The Construction CFO, validated against published CFMA and JMCO benchmarks. The CFOS targets beside them are from the book CONTROL: The Construction Financial Operating System, published with the full reference at runoncfos.com.
- 2024 Construction Financial Benchmarker, Executive Summary, Construction Financial Management Association, 2024.
- 2025 Construction Financial Benchmarker, Executive Summary, Construction Financial Management Association, 2025.
- 2025 Performance Benchmarks, Construction Companies, Jones Maresca and Company, 2025.
- SPM Trade Benchmark Reference, Sulphur Prairie Management, LLC, 2026.
Sourcing and method: the methodology page.
Which bands are measured. The 4 bands above $10M–$25M extend the survey curve further out and have not been reconciled against the licensed CFMA Benchmarker. How every figure was built is explained on the methodology page.
6 problems specific to HVAC
You wired the deposit in April, paid the balance in July, and in September the unit is still in a leased warehouse with nothing on the pay app to show for it. You bid it in March, released it in June, and it ships in February at whatever the factory is charging in February. The coil line isn't running, the plasma table is idle, the shop foreman is on payroll, and you're chasing the plumber and the sprinkler contractor for a signature. You bid 42,000 pounds of duct and the mill invoices add up to 51,000, and there is nothing in the building that tells you where the other 9,000 pounds went.
Each one below points at the item, the unit, the clock, or the party that makes it an HVAC problem, and it says which step fixes it.
| Mechanism | Why it's specific to this trade | Step |
|---|---|---|
| Your biggest PO gets paid months before it can be billed | Most trades buy material on a schedule that roughly tracks the billing, since pipe, wire, and board get delivered as the work goes in. Mechanical buys the single most expensive object on the job once, up front, from a factory whose ship date the site can't influence. That turns one PO into a cash event larger than any month of labor you'll ever run on that job, and it hits before a single dollar of it is billable. | Job cost structure |
| You bid a price the factory never agreed to hold | Other trades take commodity price risk on material they can buy within days of needing it. You're holding a price on a one-off manufactured object with a lead time longer than most of the schedule, quoted under terms that let the factory reprice at shipment. The same delay hits you twice, once on the invoice and once on the rigging, because the equipment has to come in during a short structural window that closes when the roof gets finished. | Estimating system |
| An unsigned model turns into shop burden that was never bid | A field crew that runs out of work goes to another job that afternoon. A sheet metal shop has nowhere to go, because its burden only gets absorbed through shop hours produced, and shop hours only exist when a model is signed. That makes your shop rate a function of other trades' modeling schedules, which is a dependency almost no other trade on the project has. | Overhead calculation |
| Bid pounds and bought pounds are two different numbers | Most trades bid and buy in the same unit, so a material overrun points at itself. You bid a finished installed weight and buy a raw coil weight, and the difference between them is a shop behavior, nesting and fitting mix, that never touches the estimate. The overrun then appears as a lump with no cause attached, on the single largest commodity you handle. | Estimating system |
| Temp heat on your units is a change order | No owner borrows the drywall or runs the flooring for four months before acceptance. Your equipment is the only installed product on the job that other trades operate as a construction tool, and it wears while they do it. That makes your warranty exposure a function of the GC's finish schedule, and the wear stays invisible until somebody opens an access door at closeout. | Project management |
| Retention rides on a report you didn't write | Other trades finish, get inspected, and clear retention on their own schedule. Your money is released by a document written by an agency you don't hire, don't schedule, and can't staff up, on a system that has to be tested in weather that may be six months away. Adding manpower does nothing, which is what makes this different from every other closeout problem on the job. | Monthly cadence |
HVAC against the other 47 trades
| Metric | HVAC | Mechanical and life safety average | All 48 average | Rank |
|---|---|---|---|---|
| Overhead | 16% | 16.1% | 15.1% | 32nd of 48 |
| Gross margin | 24% | 24.6% | 22.1% | 8th of 48 |
| Net profit | 8% | 8.4% | 7% | 8th of 48 |
HVAC sheds 6 points of overhead between $1M–$5M and $500M+, against 6.3 for mechanical and life safety as a group. Inside that group, Mechanical, Plumbing and Elevator all keep 9%, the most in the group, and Fire protection runs the leanest overhead at 15%. HVAC is neither, which is the usual position and the one with the most room in it.
Other mechanical and life safety trades
What owners ask
What overhead should an HVAC contractor run?
HVAC shares its overhead figure with 12 other trades at this revenue, which is what the published data resolves to. It averages 16% at $1M–$5M and 10% at $500M+, as a percentage of revenue. That is 0.1 points below the mechanical and life safety average of 16.1%. The CFOS target at $1M–$5M is 15%. The CFOS target is one point leaner than your trade's industry average at your revenue.
What gross margin should an HVAC contractor run?
HVAC shares its gross margin figure with 4 other trades at this revenue, which is what the published data resolves to. It averages 24% at $1M–$5M and 32% at $500M+, as a percentage of revenue. That is 0.6 points below the mechanical and life safety average of 24.6%. The CFOS target at $1M–$5M is 26.5%. The CFOS target recalculates at your revenue: whatever gross margin produces the net profit target once overhead is paid, never below your trade's own industry average.
What net profit should an HVAC contractor run?
HVAC shares its net profit figure with 12 other trades at this revenue, which is what the published data resolves to. It averages 8% at $1M–$5M and 22% at $500M+, before taxes, as a percentage of revenue. That is 0.4 points below the mechanical and life safety average of 8.4%. The CFOS target at $1M–$5M is 11.5%. The CFOS target recalculates at your revenue: 10 percent before taxes, or 3.5 points better than your trade's industry average, whichever is higher.
What profit margin should a small HVAC business run?
Owners usually mean net profit when they say profit margin, and for HVAC at $1M–$5M that's 8%. Gross margin is a different number, 24%, and it's what's left after job costs but before overhead. Overhead is the 16% between the two. A small HVAC business holding 8% net is at the published figure for its size, and the CFOS target at that revenue is 11.5%.
Does HVAC get more profitable as it grows?
Overhead is the number that moves. HVAC sheds 6 points between $1M–$5M and $500M+, which is in line with the 6.3 points mechanical and life safety sheds as a group. Net profit is already above the 48-trade average, so the room is in holding it while revenue climbs.
Where does HVAC rank against the other trades?
HVAC ties 3 trades in mechanical and life safety on net profit, all at 8%. Mechanical, Plumbing and Elevator are the most profitable at 9%. Fire protection runs the leanest overhead at 15%. Gross margin ranks 8th of 48 and overhead ranks 32nd.
That's the industry average and the CFOS target for HVAC at every size. Want your own books set beside them? The Financial Health Snapshot builds a CEO Report from your last twelve months, sets every figure against your trade, and walks you through it on a 60 minute call. SPM The Construction CFO (Sulphur Prairie Management, LLC) is a separate firm, and the same author runs it.
Everything on this page is something you can install yourself, andCONTROL is the order to do it in. If you would rather buy the finished result, SPM The Construction CFO does this work for HVAC contractors as a service. It is a separate firm, Sulphur Prairie Management, LLC, run by the same author.
Wrote CONTROL, the 8 step system behind these figures. More about the author.