What EBITDA Multiple Does an HVAC Company Sell For? (2026)

You get a call from a broker or a private-equity buyer, and the first question is what the business is worth. You answer with a number based on what your buddy's shop down the road sold for. The buyer's number comes back at half that.

The gap is not bad luck, and it is usually not a lowball. It is your service-agreement base and whether your books can survive a diligence team asking the same question three different ways. Both of those are things you can see in your own numbers today, before anyone makes an offer.

Here is the part most owners have never measured. Across 259 contractors with real service-agreement revenue, the median gross margin on that recurring work is 37.9%, and the top quartile runs 53%. Contractors below 25% are almost always underpricing agreements or failing to capture the maintenance pull-through they already earned.

That spread is the multiple. A buyer paying 4x is buying project revenue that has to be won again next year. A buyer paying 15x is buying a maintenance base at 53% margin that renews. Same trucks, same technicians, materially different business, and the difference shows up in one line of your own P&L before any broker sees it. The compounding effect of that, where more EBITDA also re-rates the multiple itself, is worked through in Why 25% More EBITDA Can Be Worth 88% More Company.

What EBITDA multiple can an HVAC company sell for?

The average acquisition multiple for HVAC companies is about 9.5x EBITDA, but the real range runs from 4-8x for small tuck-ins to 15-18.5x for large, service-dense platforms (Capstone Partners HVAC Services Sector M&A Report, 2026).

That is a wide range, and where you land in it is not random. A one-truck residential install shop and a commercial mechanical contractor with a book of recurring maintenance contracts are valued on completely different logic, even at the same revenue.

One caveat on the small end: below roughly $1M in earnings, buyers often price on SDE (seller's discretionary earnings) rather than EBITDA, at a lower multiple of about 2 to 3.5x, after normalizing the owner's salary and add-backs. So the 4-8x EBITDA range assumes earnings and books large and clean enough that a buyer underwrites EBITDA in the first place; a very small owner-operated shop may be valued on SDE instead.

Why do some HVAC companies sell for 4x and others for 18x?

The multiple gap is driven almost entirely by two things: how much of your revenue is locked-in service-agreement recurring revenue, and how fast a buyer's accountant can trust your numbers without a six-month cleanup.

Owners tend to assume the multiple is set by revenue size or years in business. It is not. Two shops with identical revenue can sell 4x apart on those two factors alone. Size helps at the margin, mostly because larger businesses tend to have more recurring revenue and better books, but it is the recurring revenue and the books doing the work, not the headcount.

What counts as a "service-dense platform" to a buyer?

Buyers pay platform multiples for businesses where recurring maintenance agreements make up a large share of revenue, because that revenue is predictable and survives after the owner leaves.

A pile of one-off installs is worth less per dollar than the same dollar coming from a signed maintenance agreement that renews. The install revenue walks out the door with the last job. The agreement revenue shows up next quarter whether or not the founder is still answering the phone. That predictability is exactly what a financial buyer is underwriting, so it is what they pay up for.

If you want to move up the range before a sale, growing the recurring maintenance book is the single highest-impact thing you can do, and it usually takes 18-36 months to show up as durable revenue a buyer will credit.

What makes financials "clean" enough to hit the top of the range?

Clean means your job costing ties to your P&L, your work-in-progress and unbilled revenue are tracked monthly, and a stranger could recreate your numbers in a day, not a quarter.

In our work reviewing contractor books, the single most common thing that caps a multiple is not weak margins, it is margins nobody can prove. When true job margin has to be reconstructed by hand during diligence, the buyer discounts for the risk that the number is wrong. Contractors who cost jobs correctly see true job margins around 44%, and service-agreement margins run about 38% at the median and 53% in the top quartile, not the 18-22% most owners assume (Level dataset, analysis of 2,200+ contractor P&Ls). But that only helps your valuation if the number is documented and repeatable.

Clean books do two things at once at the table: they let you defend a higher EBITDA figure, and they shrink the diligence discount a buyer applies for uncertainty.

How do I find out where my HVAC company sits in this range today?

Start by pulling two numbers: the percentage of revenue that comes from service agreements versus one-off installs, and how long it would take someone outside your company to recreate your true job margins.

Those two numbers are what a buyer looks at before they even ask for your financials. High recurring share plus fast, trustworthy margins puts you toward the platform end of the range. Low recurring share plus a shoebox of receipts puts you at 4x, regardless of how good the work is.

This is also why the private-market number you hear (4-8x) sits so far below the public comps. Public MEP contractors trade at 15-34x for structural reasons most private shops can partly close. We break that down in Why Public Contractors Trade at 15x-34x EBITDA While You'll Hear 4x-8x, and the mechanics of the recurring-revenue premium in Maintenance Revenue vs Install: The Impact on Your Business Valuation.

The two-number check before you take the call

Pull your last 12 months and check two things: what percentage of revenue came from service agreements, and whether someone outside your company could recreate your job margins in a day. If either answer makes you wince, that is your multiple gap, and it is buildable well before you are ready to sell.

If you want a second set of eyes on where your numbers land and what a buyer would flag first, see how your HVAC company benchmarks, start with the underlying HVAC profit margin benchmarks, or if a sale is on the horizon, that is what our exit-readiness work does: get the recurring-revenue story and the books to a place a buyer trusts.

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FAQ

Q: What is the average EBITDA multiple for an HVAC company?

About 9.5x on average, with a real range of 4-8x for small owner-run tuck-ins and 15-18.5x for large, service-dense platforms with recurring maintenance revenue and clean financials (Capstone Partners, 2026).

Q: Does revenue size set my multiple?

Only indirectly. Larger businesses tend to have more recurring revenue and better books, and those two things drive the multiple. Two shops at the same revenue can sell 4x apart based on service-agreement share and financial cleanliness alone.

Q: How do I increase what my HVAC business sells for?

Grow the recurring maintenance book (it usually takes 18-36 months to become durable revenue a buyer credits), and get job costing, WIP, and unbilled revenue tracked monthly so a buyer's accountant can trust your numbers without a cleanup.

Related Reading

• How HVAC scores on the Trade Economy Index (AI-resilience and AI-leverage for the trade)
• Why Public Contractors Trade at 15x-34x EBITDA While You'll Hear 4x-8x
• Maintenance Revenue vs Install: The Impact on Your Business Valuation
• The Technician Labor Multiple for Commercial HVAC
• HVAC Profit Margin Benchmarks

Sources

• Capstone Partners, HVAC Services Sector M&A Report (2026). Named, not linked: an M&A advisory report is the measurer of a private-market multiple and stays citable by name, but it is not a source we hand crawl equity to.
• Comfort Systems USA, SEC Form 10-K filings (public consolidator backlog and margin context, 2025).
• Level Index: the founding team's analysis of 2,200+ contractor P&Ls across operating, private-equity, and CFO roles.

Source and claim note: The 9.5x / 4-8x / 15-18.5x ranges are private-market M&A observations from the cited advisory report and vary by deal size, mix, and cycle. The margin figures are measured, not estimated: true job margin of 44.3% comes from 1,747,089 completed jobs, and service-agreement gross margin of 37.9% median / 53% top quartile from 259 contractors with real service-agreement revenue. Both are stated to illustrate what buyers verify, not as a guaranteed valuation of any specific business.