You've heard it a hundred times — PE firms only want recurring revenue. Build your maintenance contract base or don't bother calling. If you don't have 30% recurring, you're not a real acquisition target.
Here's the reality: recurring revenue is the single biggest value driver in HVAC business valuation. That part is true. But it is not the only path to a PE sale, and plenty of HVAC owners have exited at strong multiples without a single maintenance agreement on the books. The conversation is more nuanced than the conventional wisdom suggests — and understanding the nuance is what separates owners who get a deal done from owners who wait indefinitely for conditions that may never arrive.
This post will tell you exactly where you stand, what you can do about it in 90 days, and what to do if you can't.
Why Recurring Revenue Matters So Much
PE buyers are not paying for your past revenue. They're paying for a predictable stream of future cash flow. Recurring maintenance contracts are the cleanest expression of that predictability — same customer, same check, year after year. That predictability compresses risk for the buyer, and compressed risk translates directly into a higher multiple.
The math is concrete. Take two identical HVAC businesses — same market, same team, same $400K EBITDA. One has zero recurring revenue. The other has 40% of revenue under maintenance agreements.
Zero Recurring Revenue
40% Recurring Revenue
Same business. Same EBITDA. $800K difference. That's the recurring revenue premium in plain dollars. It's real, it's significant, and you shouldn't pretend otherwise. But it also doesn't mean the $1.6M business can't be sold.
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Calculate My Valuation →What PE Buyers Actually Look for When Recurring Revenue Is Low
Experienced PE firms — particularly those who've already built HVAC platforms — know that not every quality business has a 35% maintenance contract base. What they're really stress-testing is the underlying risk question: if I buy this business, will the revenue still be here in three years? Recurring contracts are the most direct answer to that question, but they're not the only answer.
These are the compensation factors that make a low-recurring business still worth buying:
Market dominance in a geography
If you own a market — strong local brand, no meaningful competition, high name recognition in a mid-size metro or suburb — that market position is itself a form of revenue protection. A buyer acquiring your geography gets a defensible foothold, not just a P&L.
High average ticket / premium positioning
Commercial HVAC, high-end residential, data center mechanical — businesses that live in these segments command higher tickets and attract customers who value quality over price. The buyer can see from your job data that customers are paying $8K–$20K+ per engagement. That customer profile is stickier than a $150 tune-up.
Documented repeat customer behavior
If 60% of your customers from three years ago have called you back at least once since — that is pseudo-recurring revenue. It doesn't show up on a recurring revenue line, but it is behavioral evidence that customers are loyal. Document it. Pull the data from your field service platform.
Strong technician team and low turnover
Technician churn is one of the fastest ways to destroy customer relationships post-acquisition. If you have a stable, tenured team — particularly field leads who have been with you 5+ years — that reduces the buyer's operational risk materially. The business isn't dependent on you if it runs on your team.
Clean financials and three years of consistent growth
Consistent revenue growth — even without recurring contracts — tells a story of demand. If your top line has grown 12–18% annually for three years on a base of referral and repeat business, that's a business with momentum. Clean, recast financials are the credibility layer that lets a buyer trust the story.
No single factor substitutes for recurring revenue — but a business with all five of these in place can still generate serious PE interest, especially from add-on buyers looking to expand a platform they've already built.
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See what your business is worth →The 90-Day Sprint to Add Recurring Revenue Before You Sell
If your sale timeline is 6–18 months out, you have time to meaningfully move the needle on recurring revenue — and the payoff is worth the effort. Here's how to do it fast.
Step 1: Audit your install base
Every customer who received a new unit installation in the last three years is a maintenance agreement candidate. Pull that list from your field service platform or QuickBooks. These are warm contacts — they've already trusted you with a capital purchase. A maintenance agreement is a logical next step.
Step 2: Build a simple agreement
You don't need a sophisticated program. An annual tune-up plus priority service scheduling at $200–$350/year is enough. Keep it simple: one fall visit, one spring visit, front-of- line booking when something breaks. The economics aren't the point — the recurring revenue line item on your P&L is the point.
Step 3: Sell peace of mind, not a service contract
Language matters. “Service contract” sounds like a warranty with fine print. “Peace of mind plan” or “priority care membership” sounds like a benefit. The product is the same. The conversion rate is not.
The math: what 90 days can do
If you have 400 install base customers and convert 15–20% to annual agreements at $275 average, that's $16,500–$22,000 in new recurring annual revenue. On a $1.5M top line, you've moved from 0% to roughly 1–1.5% recurring — not transformative. But if your install base is 1,500 customers, 20% conversion at $275 is $82,500 in recurring revenue, which on a $2M top line represents a 4% recurring mix. Still not 30%, but it's a story.
What to Do If You Can't Add Recurring Before the Sale
If your timeline is tight, or if your customer profile simply doesn't lend itself to maintenance agreements, there are still things you can do to close the valuation gap. This is a positioning problem, and positioning can be managed.
Document your repeat customer rate
Pull three years of customer job history and calculate what percentage of customers from Year 1 came back in Year 2 or Year 3. A 60–70% repeat rate is pseudo-recurring behavior. It won't show up on your income statement, but a good M&A advisor can present it in a CIM as evidence of customer loyalty — and buyers will count it.
Build a pro forma recurring scenario
Quantify the upside: "Our install base is 1,200 units. A 20% conversion to a $250/year maintenance plan represents $60K in new recurring revenue." You're giving the buyer a roadmap to value creation they can fund with their own operating team post-acquisition. Add-on buyers especially respond to this — they have the systems and the playbook to execute the conversion already.
Get a broker who can tell the story
A generic business broker will list your EBITDA and wait for offers. An M&A advisor who specializes in home services transactions knows which PE firms want your geography, how to position a non-recurring book as a conversion opportunity, and how to structure the CIM so buyers focus on the right metrics. Positioning matters more than most sellers realize.
Target add-on buyers, not platform buyers
There are two types of PE buyers for HVAC: platform buyers (building from scratch and need your recurring base to be the foundation) and add-on buyers (already own an HVAC platform and want your geography or technician team). Add-on buyers are far more likely to look past your recurring revenue gap — they're not buying your customer contracts, they're buying your market position and your people.
The Honest Truth
If your EBITDA is under $500K and you have zero recurring revenue, PE is unlikely. That combination puts you below the threshold where most institutional buyers can make the math work — the deal costs almost as much to close as the business is worth. The right buyer for you is probably an individual owner-operator or a strategic acquirer (another HVAC company expanding its footprint). That's not a failure; it's just the right buyer for where you are.
But if you're at $750K+ EBITDA with strong fundamentals — consistent growth, a tenured team, clean financials, geographic dominance — the lack of recurring revenue is a negotiating point, not a deal-killer. You will take a discount to a business with comparable EBITDA and a 30% recurring base. That discount might be a full multiple point. You need to decide whether the time investment to close that gap is worth it, or whether you take the deal at current terms and get out.
What you should not do is assume the answer before you know your actual number.
Find Out Exactly Where You Stand
The OffRamp calculator is free, takes under 5 minutes, and gives you two things most business owners don't have: an estimated EBITDA multiple range based on your actual profile, and a PE Readiness Score (0–100) that tells you exactly where recurring revenue is dragging your number — and how many points you're leaving on the table.
You can't fix what you haven't measured. Start there.
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.