What can I add back on an HVAC company's books?
HVAC business add-backs are the costs on your books that a new owner would not have to pay. Adding them back to profit shows what the business really earns, and every dollar counts more than once because buyers multiply it. The catch: a quality-of-earnings reviewer will test each one, so an add-back without proof is a wish, not a number.
Want a quick list for your own shop? The free add-back finder walks through the common items and shows how much of each a buyer is likely to accept. It needs no email.
How add-backs turn into price
Seller's discretionary earnings (SDE) is profit plus one owner's full pay, interest, depreciation and the add-backs below. It is what one full-time owner takes home before debt payments. BizBuySell's HVAC sold deals from 2021 to 2025 had a median of 2.58x SDE. At that multiple, a $10,000 add-back a buyer accepts adds about $25,800 to the price, and one they reject takes the same amount away.
Bigger companies with a manager layer are priced on adjusted EBITDA instead, which is SDE minus the cost of a manager to do your job (more on that below).
The HVAC add-backs checklist
| Add-back | Typical HVAC form | Proof a buyer wants | How buyers usually treat it |
|---|---|---|---|
| Your pay | Salary, draws, bonuses, payroll tax | W-2s, payroll reports, tax returns | Accepted in full on SDE |
| Interest and depreciation | Truck loans, Section 179 write-offs | Loan statements, depreciation schedule | Accepted, then buyers look at real fleet spending |
| Personal vehicles and fuel | Your truck, spouse's car, fuel cards | Vehicle list, titles, who drives what | Accepted with a vehicle list |
| Family on payroll | Spouse on books, kids on summer crews | Payroll, job duties, local market pay | Only the excess over market pay |
| Rent to your own LLC | Shop or warehouse you own | Lease, a market rent opinion | Set to market rent, up or down |
| Your own home HVAC and personal jobs | Equipment and labor booked as job cost | Invoices and work orders | Accepted with invoices |
| One-time A2L costs | Recovery machines, leak detectors, training in 2025 and 2026 | Receipts, dates | One-time only |
| Stranded R-410A write-downs | Old stock written down | Inventory records | One-time only |
| Legal settlements, one-time fees | A lawsuit, a rebrand, a sale-prep review | Invoices, settlement papers | Accepted with documents |
| Owner insurance | Life or health cover for you only | Policy showing you as insured | Usually accepted |
The last column shows typical treatment, not a rule. The buyer's reviewer decides, and documented items are the ones that hold up.
Before you send anything to a buyer, check each line:
Add-backs buyers reject
Expect pushback, or a flat no, on these:
- Ongoing refrigerant price increases. A2L tools and training are one-time. Refrigerant has been a headache, and R-454B shortages disrupted installs in 2025, but higher prices are part of running the business from now on, so they are not add-backs.
- Lump sums. "About $30,000 of personal stuff" with no list. In our calculator, undocumented totals get the biggest haircut: we estimate a buyer accepts 50% to 100%, likely 75%, against 75% to 100% for itemized ones.
- "One-time" costs that repeat. A big marketing push every spring, or a new truck every year, is a cost of doing business.
- Cash jobs not on the books. You can't add back income you never reported. SBA lenders check seller numbers against IRS transcripts.
- A pile that's too big. In our calculator, documented and rough add-backs together are capped at 15% of revenue (our estimate). Above that, double counting is more likely than real savings.
Negative adjustments buyers will make
Add-backs go both ways. A careful buyer also subtracts:
- Non-recurring income: PPP forgiveness, ERC refunds, insurance payouts on your own losses.
- Family working unpaid: if your spouse runs the office for free, a buyer adds a market salary as a cost.
- Rent below market: if your LLC charges the company less than market, a buyer raises it.
- You on the tools: if you run calls, a buyer on the EBITDA path also budgets a replacement tech wage.
- Prepaid maintenance visits: members who paid up front for visits not done yet. Buyers expect credit for these at closing. See maintenance agreements.
- Long labor warranties: free-labor promises of 5 to 10 years on installs may be held back as an escrow or reserve.
How replacing you with a manager is treated
On SDE, all of one working owner's pay is added back. If there are two working owners, only one owner's pay is added back; the second stays as a cost at market pay.
On adjusted EBITDA, the buyer assumes someone else does your job, so they subtract a fully loaded manager's salary. As a reference, the BLS national median wage for general and operations managers was $101,280 in May 2023. Our calculator uses these defaults (our estimates), adjusted by state wages:
| Your revenue | Manager salary range | Our default |
|---|---|---|
| Under $3M | $90,000 to $110,000 | $100,000 |
| $3M to $7.5M | $110,000 to $135,000 | $120,000 |
| $7.5M and over | $135,000 to $165,000 | $150,000 |
We then add about 20% for payroll taxes and benefits (our estimate, range 15% to 25%). If you sell most replacements yourself, a buyer may need more than one hire to replace you.
Worked example
Worked example: A made-up $4M HVAC company
These numbers are made up. Last year's net profit was $280,000 on $4M of revenue. The owner paid himself $180,000, including payroll tax. Interest and depreciation were $90,000.
Documented add-backs: spouse paid $70,000 for a job worth $45,000 ($25,000 excess), owner's truck and fuel $18,000, a new system in the owner's home $12,000, A2L tools and training $15,000, owner life insurance $6,000. Rent paid to the owner's LLC was $96,000 against a $72,000 market rent ($24,000).
SDE = $280,000 + $180,000 + $90,000 + $76,000 + $24,000 = $650,000.
The owner also claimed $30,000 of "other personal costs" with no list and $20,000 for higher refrigerant prices. A buyer rejects both. That is $50,000 the owner thought he had. At BizBuySell's 2.58x median, that's about $129,000 of price.
Adjusted EBITDA: $4M revenue puts the manager at $120,000, plus 20%, so $144,000. $650,000 minus $144,000 = $506,000.
The lesson: two hours with receipts can be worth more than a year of extra sales. List everything, prove it, and let a CPA decide what holds up.
Common mistakes
- Adding back things the business needs. If a buyer has to keep paying it, it isn't an add-back.
- Forgetting the negatives. Buyers find unpaid family help and below-market rent. Better to show them first.
- Counting the same cost twice. A truck's loan interest and its depreciation are separate; the truck payment itself is not a third add-back.
- Waiting until a buyer asks. Build the list and the proof file now, a year or more before you sell.
- Adding back your pay on an EBITDA deal without a manager cost. The buyer will subtract one, so plan for it.
Questions to ask your CPA, attorney or broker
- Which of my add-backs will a quality-of-earnings review accept, and which are weak?
- Is my family pay above or below market for the work done?
- What is market rent for my building, and who can give me a written opinion?
- Will this buyer price on SDE or adjusted EBITDA, and what manager salary will they subtract?
- How should prepaid maintenance visits and labor warranties be handled at closing?
- Should I stop running personal costs through the company now, and what does that change on my taxes?
- Do my add-backs tie to my tax returns for each of the last three years?
Sources
Questions owners ask
Can I add back my whole salary when I sell?
On SDE, yes, for one working owner, because SDE is what one owner takes home. On adjusted EBITDA, a buyer adds your pay back and then subtracts a market salary for a manager to do your job.
Do buyers accept personal truck and fuel add-backs?
Usually, if you give a vehicle list showing who drives each truck and which are personal. Trucks your techs use for jobs are a real cost and stay in.
Is the money I spent on A2L equipment an add-back?
One-time A2L recovery machines, leak detectors and training from 2025 and 2026 are good add-back candidates with receipts. Ongoing higher refrigerant prices are not, because a buyer will keep paying them.
What if I paid my spouse less than market?
Then a buyer adds the shortfall as a cost, which lowers your earnings. If your spouse does the books unpaid, expect the buyer to budget a market salary for that job.
How much do add-backs usually total?
In our research, owner perks, family pay and one-time costs together rarely exceed 5% to 10% of revenue for a $1M to $15M shop. That range is our estimate, not a published figure.
Related reading
Who buys HVAC companies my size?
Who buys HVAC companies with $1M to $15M in revenue: individuals, local rivals, PE platforms and add-ons, staff and family, compared with sources.
What are the steps to sell my HVAC company?
How to sell an HVAC business, step by step from three years out to closing: books, license and qualifier, maintenance members, buyers and the deal.
How do I sell my roofing company, step by step?
How to sell a roofing company in nine steps, from deciding what you want to the handover. Buyers, the LOI, due diligence, closing and what to ask.
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