A buyer's due diligence roadmap for evaluating financials, equipment, technician quality, and recurring revenue in air duct cleaning acquisitions.
Find Air Duct Cleaning Acquisition TargetsAir duct cleaning businesses trade at 2.5x–4.5x EBITDA and attract HVAC contractors, home services roll-ups, and SBA-funded owner-operators. Due diligence must address industry-specific risks: equipment age, technician certification gaps, one-time revenue patterns, and an industry reputation that creates real consumer trust barriers for poorly run operators.
Validate that reported revenue is real, recurring where claimed, and not artificially inflated by unsustainable paid lead spend or one-time commercial jobs.
Request owner-prepared P&Ls and cross-reference line items against tax filings. Flag unexplained discrepancies in labor, materials, or subcontractor costs that may indicate inflated earnings.
Demand a customer-level revenue breakdown. Identify what percentage comes from commercial contracts or property managers versus one-time residential jobs, which carry lower recurring value.
Separate Angi and HomeAdvisor spend from organic Google traffic. Heavy paid lead dependency inflates CAC and creates fragile revenue that drops post-acquisition if spend is reduced.
Air duct cleaning is equipment-intensive. Assess vacuum truck age, negative pressure machine condition, and ancillary tools to identify hidden capital expenditure obligations.
Request a documented list of all vacuum trucks, negative pressure machines, and rotary brushes including purchase dates, mileage or hours, and maintenance logs. Aging equipment is a common post-close surprise.
Confirm NADCA certifications for lead technicians and verify background check policies. Assess whether operations run without owner involvement or if key-person risk is concentrated in the seller.
Well-run businesses have written procedures for scheduling, upsell scripts, and quality checks. Absence of SOPs signals owner-dependency and increases transition risk post-close.
Verify licensing compliance, review consumer complaint history, and assess the strength of the local brand—Google reviews and NADCA affiliation are primary value drivers in this industry.
Check state licensing board records and BBB for past violations, consumer complaints, or unresolved disputes. Regulatory or reputational issues in this industry directly depress buyer confidence and valuation.
Analyze review volume, recency, and rating trends over 3 years. A declining review profile or pattern of unresolved negative responses is a leading indicator of customer experience deterioration.
Request all property management and commercial agreements. Confirm contract lengths, renewal terms, and whether assignments require client consent—concentration in one account is a significant deal risk.
Most air duct cleaning businesses sell at 2.5x–4.5x EBITDA. Businesses with NADCA-certified teams, commercial contracts, strong Google reviews, and low owner-dependency command the top of that range.
Yes. Air duct cleaning businesses are SBA 7(a) eligible. Buyers typically inject 10–15% equity, with sellers often carrying a 5–10% note to satisfy lender requirements for the buyer's commitment.
Request a customer-level revenue file segmented by job type and frequency. True recurring revenue comes from commercial contracts and maintenance plans—not one-time residential calls, which are the majority of jobs.
Heavy reliance on paid lead aggregators like Angi with no organic SEO presence. This inflates short-term revenue but creates a fragile lead pipeline that collapses if marketing spend is cut post-acquisition.
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