HVAC business profit margin is the share of revenue a company keeps after the cost of delivering the work, and it is the number most often quoted with the least evidence behind it.
Search "HVAC profit margins" and you get round numbers from marketing blogs; this page sticks to the two federal sources that describe the industry's books, the Census Bureau's 2022 Economic Census and the IRS's Statistics of Income division, and labels every invented number as illustrative.
It is the money layer under HVAC KPIs, which covers the operating numbers that fill the revenue line in the first place.
Both federal sources cover plumbing, heating and air-conditioning contractors together (NAICS 238220), a $297.6 billion revenue industry in 2022 per the Census Bureau, and that scope limit matters every time the word "HVAC" appears next to a number.
Gross margin vs. net margin
Gross margin stops at the direct cost of the work: equipment, materials, refrigerant and subcontracted install labor.
Net profit margin is what survives every other line: overhead, trucks, insurance, interest, taxes and the pay you draw as an owner.
The net margin formula
"HVAC net profit margin" is what most searches actually mean, because gross margin can look healthy while net margin runs thin once overhead lands on top.
The distinction matters for every number below, because the only federal profit figure available is a net figure from tax returns.
Is an HVAC business profitable?
The closest thing to a federal answer comes from tax returns: IRS data show corporate plumbing and HVAC contractors reported net income of about 4.8% of receipts in tax year 2022, after owners' pay.
The IRS counted 85,508 active corporation returns in the industry that year, and about 70% of them (59,971) reported a net income rather than a deficit.
The honest reading: most reporting companies made money, and not much of it, once they had paid themselves.
Hold onto the caveats: the figure is taxable income as reported on corporate returns, which includes S corporations but excludes sole proprietors and partnerships, it covers both trades at every size, residential and commercial, and the IRS notes the estimates are sample-based.
It is also not a target: a tax-return average across two trades says nothing about what your shop should clear, and tax accounting differs from the management accounts you actually run the business on.
Where the revenue goes
The Census Bureau's 2022 Economic Census itemizes the cost side for the same industry: materials and supplies took 31.5% of revenue, payroll 27.0%, fringe benefits 7.9% and work subcontracted out 7.1%.
Cost lines as a share of revenue, 2022
Materials are the largest single cost line, ahead of payroll, in the industry's combined books.
Payroll includes owners who are on payroll, so the wage line already contains part of what an owner might otherwise count as profit.
The same table puts value added at $175.9 billion, 59.1% of revenue, which is the pool that payroll, fringe benefits and whatever profit exists all come out of.
Why you cannot subtract your way to a margin
Those four lines sum to about 73.5% of revenue, and with the other lines the Census itemizes (power and fuels, rental, depreciation and other operating expenses) the total comes to about 85%, so the temptation is to call the remaining 15% profit.
Resist it: interest, income taxes, insurance and other items are not all itemized on those Census lines, so the remainder is a mix of real costs and profit that no one can split from this table.
An illustrative example shows the scale instead: on a $2 million shop, a net result equal to the IRS-reported 4.8% of receipts is about $96,000 after owners' pay, illustrative arithmetic on a corporate tax-return average covering both trades, not a prediction for your shop.
Where marketing spend fits
In the same Census data, purchased advertising and promotional services came to $1.85 billion in 2022, 0.62% of the industry's $297.6 billion in revenue, higher than the 0.46% for all specialty trade contractors and the 0.41% for construction as a whole.
Purchased advertising, share of revenue, 2022
Advertising barely edges out other purchased-services lines in the Census table: professional and technical services ran 0.61% of revenue and communication services 0.52%.
A second federal source agrees from the other direction: on tax year 2013 corporate returns, the IRS recorded advertising deductions at 0.73% of total receipts in the same industry, with officers' compensation at 4.6%.
Run the Census figure on an illustrative $2 million shop and purchased advertising comes to about $12,400 a year, which tells you the industry average, commercial clients included, treats advertising as a thin line rather than a budget rule.
We found no methodology behind the "spend 5–10% of revenue on marketing" figures that circulate, so we will not repeat them as a rule, and HVAC marketing cost breaks down what those federal lines do and do not cover.
How the margin actually moves
Price presentation comes first: a consistent price book keeps quotes from drifting technician by technician, and HVAC flat rate pricing explains the mechanics without the vendor hype.
Track service and replacement separately, because a blended average ticket hides which kind of work is carrying the overhead.
Respect how lumpy replacement demand is: DOE's rulemaking analysis estimated the average installed cost of a non-weatherized gas furnace at about $3,733 to $4,156 in 2022 dollars and used an average gas furnace lifetime of 21.5 years, model inputs rather than market prices, and the lesson for your books is that a household buys rarely and buys big.
That lumpiness is why the marketing number that belongs in a margin conversation is cost per booked install rather than clicks, and the formulas live in HVAC KPIs.
None of these levers carries a sourced before-and-after number, so baseline your own books and judge every change against them.
Frequently asked questions
Is owning an HVAC business profitable?
The federal evidence says most reporting companies clear zero but on thin margins: IRS data show corporate plumbing and HVAC contractors reported net income of about 4.8% of receipts in tax year 2022, after owners' pay, and about 70% of those returns reported a net income. That is a description of the industry's tax returns, not a promise for any single shop.
What is the average HVAC profit margin?
No source publishes an HVAC-only profit margin with a method we could verify. The closest federal figure is the IRS number above, and it covers corporate plumbing and HVAC returns combined, so we will not quote it as an HVAC average or a target.
What share of revenue goes to materials and labor for HVAC contractors?
In the Census Bureau's 2022 Economic Census, plumbing, heating and air-conditioning contractors spent 31.5% of revenue on materials and supplies and 27.0% on payroll, plus 7.9% on fringe benefits and 7.1% on subcontracted work. The figures include plumbing contractors and cover employer firms only.
How much do HVAC contractors spend on advertising?
Purchased advertising and promotional services ran 0.62% of revenue in the Census Bureau's 2022 Economic Census and 0.73% of receipts on IRS corporate returns for tax year 2013, both industry averages for plumbing and HVAC combined. Neither is a recommended budget, and we found no method behind the 5–10% of revenue figures that circulate.
Why doesn't this page give me a margin target to aim at?
Because we could not find a published HVAC margin benchmark that discloses its method, and a number without a method is an opinion with a decimal point. Baseline your own books and judge every change against them.