The quality of earnings report is the moment of truth in an HVAC PE deal. Every number you've ever called EBITDA gets stress-tested by accountants whose job is to find reasons to reprice. Most sellers think they're ready until the auditor starts asking for a P&L reconciliation that goes back three years — then they realize their books don't tell a clean story.
One surprise can crater the deal or reprice it by 20%. A normalized vs. actual EBITDA variance of more than 10% gives the buyer grounds to reduce the offer, tighten the earn-out targets, or walk. And you've already signed the LOI — often with an exclusivity clause that locks you in. The leverage you had before signing is gone.
The owners who get through the QoE cleanly — at the stated price, on schedule — didn't get lucky. They started preparing 6–12 months before the LOI, not the day after signing. Here's exactly what that preparation looks like.
What a QoE Auditor Actually Looks At
QoE auditors aren't verifying that your books comply with accounting rules — they're building a case for repricing. These six areas get the most scrutiny in HVAC deals.
QoE audit scope: what they examine
Revenue recognition
Are invoices recorded at booking or completion? Accrual vs. cash timing mismatches inflate trailing-12 EBITDA and are always flagged.
One-time revenue items
A large commercial job, an insurance payout, or any non-recurring revenue that inflates trailing-12 EBITDA will be normalized out of the auditor's adjusted figure.
Owner add-backs
Are they legitimate and documented? Personal vehicle, above-market owner salary, one-time equipment purchases — each needs a paper trail or it gets cut.
Working capital normalization
HVAC has seasonal cash flows. Auditors review A/R aging, deferred revenue, and inventory to set a working capital peg that reflects the actual business cycle.
Customer concentration
Top 5 accounts as a percentage of revenue. Above 20% in any single customer is a concentration discount — both in the QoE findings and in the multiple.
Related-party transactions
Owner-adjacent expenses: rent paid to an owner-controlled entity, family members on payroll, vendor relationships with companies the owner also controls.
The 5 Things HVAC Owners Need to Fix Before the QoE
These aren't things you can fix during diligence. You need runway — ideally 12 months before the PE deal timeline begins.
- 1
Get 3 years of clean, accrual-based P&Ls
Cash accounting is a deal-stopper. If your books are on cash basis, a QoE auditor will spend weeks trying to convert your revenue to an accrual basis — and every gap they find becomes a pricing lever. If you've been on cash basis, a good CPA can restate to accrual. That restatement process takes 2–4 months and costs real money. Do this before the LOI, not during diligence. Three years of clean, accrual-based financials that tie to your tax returns and bank statements is the baseline for a clean QoE.
- 2
Document every add-back in writing
The owner add-backs that inflate your EBITDA are only worth something if you can prove them. Owner's personal vehicle run through the business: show the registration and mileage logs. Above-market owner salary: get a market compensation study from a third-party source that shows a replacement GM earns $120–150k, and your add-back is the difference. One-time equipment purchases: provide the invoice and explain why it won't recur. Undocumented add-backs get cut — full stop. Build a formal add-back schedule with your CPA 6–12 months before you go to market.
- 3
Identify and explain revenue spikes
If 2023 had a large commercial job that won't recur, the auditor will normalize it out of trailing-12 EBITDA regardless — but how they normalize it matters. If you get ahead of it with a written explanation memorandum that frames it as a one-time event and provides context for the run-rate revenue, you control the narrative. If the auditor discovers it without context, they may model it more conservatively than the reality warrants. Know your numbers better than the auditor does, and prepare the explanations in advance.
- 4
Clean up related-party transactions
If your brother's LLC does your fleet maintenance at above-market rates, the auditor flags it. If you rent the shop from an entity you control at above-market rent, the auditor flags it. Every related-party transaction gets scrutinized for two things: is it arm's-length, and is it properly disclosed? The fix is either to terminate the arrangement before you go to market, or to document market comparables that show the transaction is at fair value. Either way, going into a QoE with undisclosed related-party transactions is one of the fastest ways to give buyers repricing leverage.
- 5
Run a customer concentration analysis yourself
If one customer is more than 20% of your revenue, PE buyers will haircut the valuation — it's not a matter of if, but how much. Run the analysis before the auditor does. If you have a concentration problem, you have two options: diversify your customer base in the 12–18 months before you go to market (the right answer), or go into the process with a prepared explanation for why that customer relationship is durable, contractually protected, and unlikely to churn. The former protects your multiple. The latter softens the discount. Letting the auditor discover it without context does neither. See more on PE diligence questions for the full scope of customer-related inquiries.
The 12-Month Prep Runway
HVAC businesses that close cleanly at their asking price almost always started QoE prep 12 months before LOI. The window matters because most of the fixes aren't fast: restating financials takes months, building a documented add-back schedule takes a full operating year to construct credibly, and diversifying your customer base isn't something you can do in 60 days of exclusivity.
Use the 12 months to:
Restate financials to accrual basis if needed — do this first
Grow recurring service agreement revenue (directly improves your multiple)
Reduce owner dependency — document processes so the business runs without you
Build and document add-backs proactively with receipts and written justification
Growing your service agreement revenue during this runway doesn't just look good in the QoE — it directly increases the multiple PE is willing to pay.
What Happens If You're Not Ready
Auditors can't un-see what they find. If the QoE surfaces a 15% EBITDA variance — normalized earnings of $1.7M instead of the $2M you represented — the buyer will reprice. And you've already signed an LOI, often with an exclusivity clause that means you can't go find another buyer.
Some sellers accept the reprice. Others walk. Either way, the leverage is gone. The exclusivity window has been running for 30–60 days while the QoE was in progress. You've spent management time and legal fees getting to this point. Walking costs you momentum, time, and sometimes your relationship with that buyer entirely.
The owners who use the QoE process as a learning exercise — running their own shadow QoE with their CPA before the buyer's team arrives — come out ahead. They find the issues first, fix what can be fixed, and walk into diligence knowing exactly what the auditor will find. No surprises means no leverage for the buyer to reprice. That's the preparation advantage.
Know your number before the auditor does
OffRamp's HVAC Valuation Calculator gives you an EBITDA-based estimate and a PE Readiness Score — so you know exactly where you stand before a buyer puts you under a microscope.
Run the Free Valuation CalculatorFrequently Asked Questions
How long does a QoE audit take for an HVAC business?
Typically 4–8 weeks. The auditor reviews 3 years of financials, interviews management, and produces a report. Larger or more complex businesses take longer.
Who pays for the QoE audit?
The buyer pays. But the seller's preparation time (and the cost of any CPA restatements) is real — budget 40–80 hours of management time.
Can I use my existing CPA for the QoE?
No. The QoE auditor is hired by the buyer and is independent. Your CPA's job is to ensure your financials are clean enough to survive the process.
OffRamp is a free valuation tool for HVAC business owners. We don't sell your information, represent buyers, or work on commission. The calculator and reports are educational tools — always consult a licensed M&A advisor before entering a sale process.