HVAC Business Valuation Multiples: What Buyers Pay

In the shops I have worked with, the difference between a 4x and a 5.5x multiple on the same HVAC company is usually 18 to 24 months of deliberate work, and on $520,000 of adjusted EBITDA that gap is $780,000 in cash at closing. Buyers know exactly what they are paying for. Most owners find out at the letter of intent stage, which is too late to change the number.

I spent 45 years in the trades before I started consulting, and I have sat in on enough deal conversations to know that the multiple in the broker's pitch deck and the multiple in the wire transfer are different animals. Add-backs get rejected, earnouts replace cash, and a working capital peg can quietly take six figures off the table.

By the end of this article you will be able to calculate your own adjusted EBITDA the way a buyer does, place your company inside a realistic multiple range, name the five things that move that number up and the five that move it down, and lay out a 24-month plan that captures the value a private equity group would otherwise create after the check clears.

How a multiple is actually applied

A valuation multiple is a shortcut. The buyer takes a measure of your earnings and multiplies it by a number that reflects how confident they are those earnings will show up next year without you. The whole negotiation lives in two places: which earnings figure they use, and how confident they are.

Companies under roughly $1 million in profit are usually priced on seller's discretionary earnings (SDE). That is net profit plus the owner's salary, owner's benefits, interest, depreciation, and one-time expenses. It assumes one working owner will replace you and take the whole figure as pay. Above that size, buyers switch to adjusted EBITDA: earnings before interest, taxes, depreciation and amortization, with your compensation replaced by a market-rate salary for a general manager. The switch matters. If you pay yourself $180,000 and a GM costs $140,000, only $40,000 of your salary survives as an add-back under EBITDA.

Add-backs are where honest owners lose money and creative owners lose credibility. A buyer's quality of earnings team will go line by line through three years of statements. Here is what they accept and what they push back on in a typical trades deal.

Add-back	Usually accepted	Usually rejected or reduced
Owner salary above market GM pay	Yes, the excess only	The full salary
Family members on payroll who do not work	Yes, with documentation	Family who actually run dispatch or the office
Personal vehicles, travel, meals	Yes, if clearly personal	Anything mixed with real business use
One-time legal, lawsuit or storm cleanup costs	Yes, if it truly happened once	"One-time" costs that show up every year
Below-market rent paid to the owner's building LLC	Adjusted to market, which can lower EBITDA	Ignoring the rent step-up
Deferred truck replacement or maintenance	No	Buyer subtracts the cost instead
Projected savings from what the buyer could do	No	Always rejected

Two things I see constantly. Owners forget that rent gets normalized in both directions, so a building you own and charge yourself $2,000 a month for will get marked to a $6,000 market rate and cost you $48,000 of EBITDA. And owners with direct labor sitting in operating expenses instead of cost of goods sold show a gross profit of 70 percent that a buyer immediately recasts to 45 percent, which starts the whole conversation in a hole. Direct labor belongs in COGS, and the target is 50 percent gross profit or better with labor in there.

Typical multiple ranges by size

The ranges below are what I see in the market for residential HVAC and plumbing companies. They are typical ranges observed over the last few years, and they move with interest rates, with how many platforms are buying in your metro, and with the quality of the specific company. They are a starting point for a conversation with a real advisor. Nobody should treat them as a promise.

Earnings level	Basis	Typical multiple	Who is buying
Under $1M	SDE	2.5x to 4x	Individual buyers, local competitors, SBA-financed deals
$1M to $3M	Adjusted EBITDA	4x to 6x	PE-backed platforms buying add-ons, regional consolidators
$3M to $10M	Adjusted EBITDA	6x to 8x	Platform acquisitions by private equity
Over $10M	Adjusted EBITDA	8x and up	Large platforms, secondary sales between PE firms

The headline multiple is only part of the real number. A $2.6 million offer at 5x could be $1.8 million in cash at close, $400,000 in an earnout you may never see, and $400,000 rolled into the buyer's equity. A $2.4 million all-cash offer at 4.6x might be the better deal. Compare the cash at close and the odds of collecting the rest, and treat the headline multiple as a talking point.

Plumbing companies trade in similar bands, often a half turn lower for pure service shops with no replacement business and a half turn higher when drain cleaning and water treatment recurring revenue is strong. Electrical is similar but with fewer active buyers, which compresses the top of each range.

What moves the multiple up and what moves it down

Every buyer runs some version of the same scorecard. Score yourself on the ten items below and be hard about it. Owners tend to grade themselves a full point high on each one.

Five things that move it up

1. A maintenance agreement base with a real renewal rate. Buyers count agreements per service truck and check renewal. A base of 150 to 200 agreements per service truck at 80 percent or better renewal is where the premium starts. A buyer will pull the list and call a sample, so the count has to be active agreements, and the pricing behind them has to hold margin. If your plans are underpriced, fix the math first using the approach in HVAC service agreement pricing.
2. A second-in-command who can run the shop without you. A general manager or operations manager who has been in the chair for at least 12 months, with the pay already in the P&L, removes the single biggest risk on the buyer's list. It is the one item that can move a multiple by a full turn on its own.
3. Clean financials with labor in COGS and 50 percent gross profit. Monthly closes, accrual accounting, three years of tax returns that match the statements, and a chart of accounts that separates service, install and maintenance. Gross profit at 50 percent or higher with direct labor included is the line that tells a buyer the price book works.
4. Technician retention and tenure. A buyer will ask for a roster with hire dates. Average tenure over four years and turnover under 15 percent a year says the culture and pay plan travel with the company. High turnover says the owner is the glue.
5. Service-heavy mix and no customer concentration. Residential service and replacement with no single customer over 5 percent of revenue is what platforms want. A builder or property management account that is 30 percent of sales gets discounted heavily because it can leave with one phone call.

Five things that move it down

1. Owner dependence. If you are the top comfort advisor, the backup dispatcher and the only person who prices a change-out, the buyer is paying for a job, and they price it that way.
2. Revenue concentrated in new construction or a few commercial accounts. Anything over 20 percent of revenue from builders or from a handful of accounts gets a lower multiple, and sometimes gets carved out of the deal entirely.
3. Cash-basis books and a messy year. A big storm year, a large one-time commercial job, or a year where you switched software and lost the data all force the buyer to underwrite off a lower normalized figure.
4. Underpriced work. Gross profit under 40 percent with labor in COGS tells a buyer they will have to reset the price book, and they will take the risk of customer loss out of your price.
5. Aging fleet and deferred maintenance. Eight trucks with 200,000 miles each is a $400,000 capital expense the buyer will subtract dollar for dollar from the purchase price or through the working capital peg.

What a private equity roll-up does in the first 12 months

Owners often imagine a PE buyer has some proprietary system. In practice the first-year playbook is short and public, and I have watched it run many times. It works because the purchase price was set on the old numbers and the new numbers belong to the buyer.

• Price book reset, month one. The platform loads its own flat rate book, usually 15 to 25 percent above what the acquired shop was charging, with a loaded labor rate that reflects real overhead and a target gross profit above 55 percent with labor in COGS. If you have never rebuilt your own book, the method is laid out in HVAC flat rate pricing.
• KPI scorecards, months one to three. Every tech gets a weekly scorecard: average ticket, billable efficiency, agreement conversion, callback rate. Every CSR gets booking rate. The dispatcher gets calls per truck per day. Nothing here is new. The difference is that someone reads the numbers every Monday.
• Membership push, months two to six. Techs get a spiff for every agreement sold, CSRs offer it on every call, and the goal is to double the base within 18 months. Recurring revenue is what the platform will be valued on when it sells again.
• Add-on acquisitions, months six to twelve. The platform buys two or three smaller shops in the same metro, folds them into one dispatch, and spreads the office overhead. This is the multiple arbitrage: they bought you at 5x, bought the small shops at 3x, and will sell the whole thing at 8x or more.

Every one of those moves is available to you today. An owner who resets the price book, runs a weekly scorecard, and builds the agreement base over the two years before a sale gets paid for the result at the higher multiple. An owner who sells first hands that increase to the buyer. The Profit Simulator is the fastest way I know to model what a price book reset and an agreement push do to EBITDA before you commit to either.

Worked example: Ridgeline Heating and Air

Ridgeline is a hypothetical residential HVAC company doing $4.5 million in revenue with nine trucks, six on service and three on install. After a quality of earnings review the adjusted EBITDA is $520,000, which is 11.6 percent of revenue. The owner still runs sales and pricing. There are 300 maintenance agreements on the books, and nobody tracks renewals.

Scenario	Adjusted EBITDA	Multiple	Enterprise value	Change vs today
As it sits today (owner-dependent, 300 agreements)	$520,000	4.0x	$2,080,000	0
Same EBITDA at the top of the range	$520,000	5.5x	$2,860,000	+$780,000
Add 900 agreements (1,200 total, 200 per service truck)	$607,000	4.75x	$2,883,000	+$803,000
Add a GM who has run the shop for 12 months	$607,000	5.5x	$3,338,000	+$1,258,000

Two notes on the arithmetic. The 900 added agreements at $216 a year produce $194,400 in revenue; at 50 percent gross profit with labor in COGS that is $97,200, less roughly $10,000 in tech spiffs and admin, so about $87,000 lands in EBITDA. The GM line costs nothing at the EBITDA level because adjusted EBITDA already deducts a market salary in place of the owner; putting a real person in the chair for 12 months simply proves the number is real. The multiple moves from 4x to 5.5x because the buyer is now paying for a business with 200 agreements per service truck and a manager who has run it, and those two items are the ones a buyer weights most. The total swing is about $1.26 million on the same company.

The 24-month runway and the letter of intent

What to fix in which quarter

Quarter	Focus	Proof the buyer will ask for
Q1	Move to accrual books, put direct labor in COGS, separate service, install and maintenance revenue. Rebuild the price book to 50% gross profit or better.	Monthly P&L by department, price book file
Q2	Start weekly KPI scorecards for techs, CSRs and dispatch. Set the agreement target per service truck.	12 months of scorecards by closing
Q3	Hire or promote the GM. Move sales and pricing decisions off your desk. Start the tech retention plan (pay bands, career ladder).	Org chart, GM offer letter, pay plan
Q4	Agreement push: tech spiffs, CSR script, renewal tracking. Clean personal expenses out of the books.	Agreement count and renewal report
Q5 to Q6	Reduce any customer over 10% of revenue. Replace trucks that will not survive diligence. Take a two-week vacation and let the GM run it.	Customer concentration report, fleet list with mileage
Q7 to Q8	Engage a CPA who has closed trades deals for a sell-side quality of earnings. Interview advisors. Assemble the data room.	Three years of returns, QoE report, agreement list, roster with tenure

The scorecards in HVAC business KPIs are the same ones a buyer will ask for, so start them early enough to have a full year of history at closing.

Letter of intent terms in plain words

A letter of intent is a non-binding summary of the deal that becomes binding in practice, because once you sign it you are locked out of talking to other buyers for 60 to 90 days and your negotiating position gets weaker every week. Four terms carry most of the money.

• Earnout. Part of the price is paid later, only if the business hits targets after you sell. Ask what the target is, who controls the levers, and what happens if the buyer changes the price book or merges your shop into another. Earnouts based on revenue are easier to hit than earnouts based on EBITDA you no longer control.
• Rollover equity. You reinvest part of your proceeds into the buyer's platform, typically 10 to 30 percent of the price. It can pay off well on the second sale, and it can also be worth nothing. Treat it as a bet on the platform, and ask for the same class of shares the sponsor holds.
• Working capital peg. The buyer expects to receive a normal level of receivables, inventory and payables. If you drain cash or collect receivables aggressively before closing, the difference comes out of your price. The peg is usually set on a trailing 12-month average, so know that number before the LOI is signed.
• Non-compete. Typically five years and a radius or metro area. Read it for whether it stops you from consulting, from working for a friend's shop, or from owning a related business.

None of this is legal or tax advice. A deal attorney who has closed trades transactions and a CPA who has done the same are required, and their fees are small compared with what a bad peg or a badly drafted earnout can cost. Structure also drives taxes: an asset sale and a stock sale can put very different amounts in your pocket from the same headline price, and that is a conversation for your CPA before you sign anything.

What to do this week

1. Pull last year's P&L and recast it yourself: move direct labor into COGS, replace your salary with a market GM salary, and list every add-back with the receipt behind it. That is your adjusted EBITDA.
2. Count active maintenance agreements and divide by service trucks. Below 100 per truck, the agreement push is your biggest lever.
3. Write down every decision in the shop that only you can make. That list is the GM's job description.
4. Run last year's numbers through a 4x and a 5.5x multiple. The gap is what the next 24 months are worth.
5. Ask two owners who have sold for the names of their deal attorney and their CPA. Call both before any broker calls you.

Frequently asked questions

How much is my HVAC business worth?

For most companies between $1 million and $10 million in revenue, value is adjusted earnings times a multiple that typically runs from 2.5x to 4x on SDE for small shops and 4x to 6x on EBITDA for companies earning $1 million to $3 million. A $4.5 million company at $520,000 EBITDA usually lands between $2 million and $2.9 million before deal terms. Earnouts and working capital adjustments change the cash figure.

What EBITDA multiple do HVAC companies sell for?

In the deals I have seen, companies with $1 million to $3 million in adjusted EBITDA commonly sell for 4x to 6x, larger platforms for 6x to 8x or more, and companies under $1 million in profit for 2.5x to 4x seller's discretionary earnings. These are observed ranges. Owner dependence, agreement base, tech tenure and customer concentration decide where in the range a specific company lands.

Is selling my HVAC business to private equity a good idea?

It can be, if the price is right, the earnout is achievable, and you understand that the buyer will reset the price book, install scorecards and push memberships in year one. Owners who do those things themselves first sell at a higher multiple. Owners who sell first give that increase away. Either way, use a deal attorney and a CPA with trades experience.

What is a good EBITDA multiple for a plumbing company?

Plumbing companies trade in bands similar to HVAC: roughly 2.5x to 4x SDE under $1 million in profit and 4x to 6x adjusted EBITDA from $1 million to $3 million. Pure service shops with no replacement work or recurring drain and water treatment revenue often sit a half turn lower. Recurring revenue and a manager who runs the shop pull the number toward the top.

What add-backs can I use when selling my HVAC company?

Buyers generally accept the portion of your salary above a market general manager wage, verified personal expenses, family payroll for people who do not work, and true one-time costs. They reject recurring so-called one-time expenses, projected savings, and deferred truck or equipment spending. Rent to your own building gets marked to market, which can lower EBITDA. Every add-back needs a document behind it.

If you want a straight read on where your company sits in the range today and what the next 24 months could add, book a free strategy session and bring last year's P&L.