Niche Comparison
HVAC vs Plumbing
On the surface these look like the same deal: licensed residential trades, $200K–$1.5M of SDE, 2.5×–4.5× multiples, and a wave of PE rollups bidding alongside you. The real choice is between a business where service is structurally a loss leader feeding install jobs (HVAC) and one where break-fix problems homeowners can't ignore drive the ticket (plumbing). What determines fit is your tolerance for marketing-driven customer acquisition, how the seller's license actually transfers, and whether the revenue mix is repair-and-replace or quietly propped up by new construction.
At a glance, side by side
- Recurring revenueModerate
- Capital intensityModerate
- Owner dependencyHigh
- Newbie suitabilityLow
- PE rollup activityHigh
- Recurring revenueModerate
- Capital intensityModerate
- Owner dependencyHigh
- Newbie suitabilityModerate
- PE rollup activityHigh
How they make money
- Replacement installsSystem replacements at roughly 50% gross margin — the profit engine
- Service & maintenanceOften a loss leader (≈ -10% to -15%) that feeds install opportunities
- Residential remodelProject work tied to home improvement cycles
- New constructionLumpier, lower-margin work — often a sign of a lead-flow problem
Service is the lead engine; install is the profit engine — and any new-construction exposure usually drags the multiple down.
- Service & repairInbound calls, repairs, replacements — the highest-quality revenue
- Replacement & installWater heaters, fixtures, larger ticket replacements
- Drain & sewerMay not require a plumbing license depending on jurisdiction
- New constructionOften a sign of unsolved lead-flow problems, not strategy
- Home warranty / commercialWarranty work pays well below retail; top operators avoid it
Pure repair-and-replacement plumbing trades higher than mixed shops with significant new construction exposure — buyers consistently pay up for revenue mix that's free of construction lumpiness.
What buyers typically pay
| Niche | Profile | Multiple | Price range |
|---|---|---|---|
| HVAC | Owner-operator Sub-$500K SDE | 2.0× – 3.0× SDE | $300K – $1.5M |
| HVAC | Established $500K – $1.5M SDE | 3.0× – 4.5× SDE | $1.5M – $6M |
| HVAC | Professionalized $1.5M+ EBITDA | 5.0× – 8.0× EBITDA | $7.5M+ |
| Plumbing | Owner-operator Sub-$500K SDE | 2.0× – 3.0× SDE | $300K – $1.5M |
| Plumbing | Established $500K – $1.5M SDE | 3.0× – 4.5× SDE | $1.5M – $6M |
| Plumbing | Professionalized $1.5M+ EBITDA | 5.0× – 8.0× EBITDA | $7.5M+ |
Questions that apply to both
The questions below cut across the differences — diligence threads that matter regardless of which niche you choose.
How does the seller's license actually transfer, and does the deal still pencil under current SBA rules?
In most states, HVAC and plumbing licenses are held by a named qualifying individual, and getting your own can take longer than the 12-month transition window the SBA now allows after a full buyout. If the seller personally holds the license and no employee qualifier exists, SBA 7(a) financing may not be workable without seller financing outside the structure. Confirm the qualifier situation before you spend money on diligence.
What is the real revenue mix beneath 'residential service'?
'Residential' is not a diligence answer. Break the book into service/repair, replacement, residential remodel, and new construction — each has different margins, durability, and multiple implications. New construction exposure in either trade is usually a sign the prior owner couldn't solve lead flow, not a strategic choice, and pure repair-and-replace shops command higher prices.
Are the technicians W-2 employees, and who actually owns the customer relationship?
Service businesses leaning on 1099 technicians often show inflated cash flow because they're avoiding employment taxes, benefits, and workers' comp — and contractors arriving in their own branded trucks can take customers with them post-close. If you spot this pattern, it's often fixable inside the transaction via reclassification, asset purchase, indemnity, and a price discount, but you have to negotiate it in.
What demand-generation assets are you actually buying?
Margin and overhead are re-engineerable; the phone number, GMB listings, review count, SEO footprint, CRM (ServiceTitan or equivalent), and active customer database are not. Define 'active' carefully — roughly 36 months for plumbing, 18 months for HVAC — and pressure-test inbound call volume against advertised account counts. With LSA leads moving from $15–25 to $45–70, the existing organic footprint is increasingly the moat.
Does the price work as a multiple of revenue, not just earnings?
For sub-$5M residential trades shops, ~0.5× revenue is comfortable and >1.0× is widely considered overpaying — at this scale the business can often be rebuilt organically for less. Watch for 33%+ EBITDA margins, which usually reflect an under-resourced operation (no marketing spend, owner wearing the service-manager hat) that won't survive scaling. PE rollups will outbid you on geographic-fit deals; don't anchor to their math.
When to prefer each
Prefer HVAC when you have (or can hire) real marketing chops and are willing to operate a business where service is a loss leader at -10% to -15% margins that exists to feed 50%-margin install jobs. The cadence works for you here: customers need a tune-up once or twice a year, so 'active' means 18 months and reactivation campaigns can move the needle quickly. HVAC is also where Northeast geography pays off — boiler tickets of $15K–$17K versus $9K–$11K systems further south. The catch is that residential HVAC is dominated by customer acquisition cost, and with LSA leads having tripled in price, you need to be buying a business with a genuine SEO/GMB/review moat, not just trucks and techs.
Open the HVAC guide →Prefer plumbing when you want demand you don't have to manufacture. Homeowners can't defer a burst line or a failed water heater, so the business runs on problems rather than on marketing budgets — useful if your edge is operations, recruiting, and dispatch rather than digital acquisition. Plumbing's licensing moat tends to be tighter (regulatory capture is real), and the longer 36-month 'active' window means a database reactivation thesis is slower to compound than in HVAC. The tradeoff is that the labor pool is harder — master plumbers are scarce, key-person risk is acute, and best-in-class operators stay pure-plumbing well past $5M before adding a second trade. If you're tempted by a combined plumbing+HVAC shop under $5M, that's usually a sign the prior owner couldn't solve one trade and bolted on another, not a strategic advantage.
Open the Plumbing guide →Sources
6 sources cited on this page, grouped by authority tier.
Primary sources
Government publications, established data providers, and peer-reviewed research.
- Other Registrations – Texas State Board of Plumbing Examiners— Texas State Board of Plumbing ExaminersRetrieved Apr 26, 2026
- South Carolina Contractor's Licensing Board— South Carolina Department of Labor, Licensing and Regulation (LLR)Retrieved Apr 26, 2026
Practitioner sources and trade press
Practitioner publications, broker reports, and trade press.
- 2025 Updates to SBA's Rulebook - AdvisorLoans— AdvisorLoansRetrieved Apr 26, 2026
- HVAC License Reciprocity By State— FieldPulseRetrieved Apr 26, 2026
- Practitioner podcast interviewsRetrieved Apr 26, 2026
- Retrieved Apr 26, 2026