How to Value an HVAC Company in Illinois

HVAC companies are among the most sought-after small businesses in Illinois. Buyers — from individual operators to private equity rollup platforms — actively target HVAC businesses with recurring maintenance contract revenue. Typical sale multiples range from 3x to 5x SDE for well-run operations, with premium multiples for those with significant recurring contract books.

Recurring Revenue Is the Key

The single biggest value driver in an HVAC business is maintenance agreement revenue. A business generating $500,000 SDE with 300 active maintenance contracts will sell for significantly more than an identical business with only one-time service calls. Recurring revenue reduces buyer risk and supports higher purchase prices and SBA loan approvals.

Other Value Factors

Fleet condition, technician certifications, geographic territory, and brand reputation all matter. Buyers also evaluate customer concentration — if 40% of revenue comes from one commercial account, that is a risk that will suppress value. Diversified residential and light commercial customer bases are ideal.

Illinois HVAC businesses have strong market demand from both owner-operators and regional consolidators. If your business generates over $1M in annual revenue, you likely have acquisition interest you are not aware of.

How Illinois buyers put a number on how to value an hvac company

This page is the valuation guide. It is not the sale-process playbook. Seller’s discretionary earnings (SDE) is the cash a full-time working owner can take after you normalize the books. Start with the tax return. Add owner pay and one-time costs. Subtract the wage you must pay to replace the owner.

HVAC buyers recast around the maintenance-agreement book, not last winter’s furnace-changeout spike. Add back owner W-2 and the truck, then pull storm-year replacements, warranty callbacks the seller ate, and a family dispatcher who is not staying. If the owner still diagnoses and closes the high-ticket jobs, subtract a service manager before you talk about the high end of 3x–5x SDE.

Planning band on this vertical: 3x–5x SDE. That is a range, not a quote. BizBuySell’s Q2 2026 Insight Report showed a 2.7× cash-flow multiple across all reported closed deals. Do not use that marketplace average as this shop’s appraisal.

A worked planning example (illustration)

Illustration only — not a quote for any Illinois shop. A hvac companie whose tax return shows $210,000 of net profit is not worth $210,000 × a rumor multiple.

Add back the owner’s $126,000 W-2 and payroll tax, $10,500 of discretionary benefits, $8,500 of accepted one-time cost, and $7,000 of personal expenses that a buyer will not run. Then subtract $12,000 of replacement labor if the owner still diagnoses, sells, or closes the books.

Adjusted SDE in this illustration is $350,000. At 4.00x, enterprise value is $1,400,000 before debt, working capital, holdback, and tax.

SDE line items buyers actually use

1. Reported net profit (tax return, not the marketing P&L)
2. + Interest expense
3. + Income taxes (not payroll, sales, or property tax)
4. + Depreciation and amortization
5. + Owner W-2, bonuses, and payroll taxes on the owner
6. + Discretionary owner benefits that a buyer will not keep (auto, personal travel, family on payroll with no role)
7. + Accepted one-time or non-recurring expenses
8. − Market-rate replacement labor for owner work that will not transfer
9. = Seller’s Discretionary Earnings (SDE)

What moves the multiple up or down

• Auto-renewing maintenance agreements the owner does not personally sell
• Technician tenure and a non-owner closer
• Commercial service contracts versus one-off changeouts
• Fleet and recovery-equipment condition
• Manufacturer and utility-rebate account status

What does not transfer with the price

EPA Section 608 cards are personal to the technician and do not transfer. Illinois has no single statewide HVAC contractor license, but Chicago and many suburbs require mechanical or refrigeration contractor registration and a supervising licensed person on the payroll after closing. Without that person, the buyer cannot pull permits.

Diligence that changes the number

• Maintenance-agreement count, average ticket, auto-renew language, and cancellation rate
• Technician roster, EPA 608 cards, and who holds the municipal supervising registration
• Fleet age, recovery machines, and refrigerant inventory accounting
• Warranty reserves and manufacturer account standing
• Dispatch software ownership and control of the published phone number
• Residential replace versus commercial service mix, including any prevailing-wage work

When you want the close calendar instead of the math, read how to sell. This page stays on value.

Documents to gather this week

1. Three years of signed business tax returns and matching P&Ls
2. Year-to-date P&L, balance sheet, and three months of bank statements
3. Current lease, amendments, and a plain-English remaining term
4. License and permit list, including who holds each card
5. Top-customer concentration (names redacted until an NDA)

A simple Illinois close calendar

Plan six to twelve months from cleanup to close on a prepared Main Street deal. Start CBS-1 and any Chicago or Cook notices at letter-of-intent, not the week of funding. Landlord consent often takes longer than the lender.

Related pages on this site

• Seller pricing page for this vertical
• How to sell
• How to buy
• Illinois business valuation
• Confidential consult

Educational only — not legal, tax, or a formal appraisal. Confirm bulk-sale notices, licenses, and tax allocation with counsel and a CPA.