A step-by-step LOI guide built for air duct cleaning acquisitions — covering purchase price anchoring, equipment carve-outs, technician retention clauses, and earnout structures specific to route-based home services deals.
A Letter of Intent (LOI) is the foundational document in any air duct cleaning business acquisition. It establishes the buyer's offer, outlines deal structure, and triggers an exclusivity period so both parties can move into formal due diligence without fear the other side is shopping competing offers. In the air duct cleaning sector — where valuations typically range from 2.5x to 4.5x EBITDA on businesses generating $1M–$3M in revenue — the LOI must do more than state a price. It needs to address the nuances that make this industry distinct: aging vacuum truck fleets, technician certification continuity, the fragility of commercial property management relationships, and the sustainability of paid lead sources like Angi and HomeAdvisor. Whether you are financing through an SBA 7(a) loan with a seller note or negotiating an all-cash deal at a modest discount, a well-drafted LOI protects your leverage, signals professionalism to the seller, and sets the tone for every negotiation that follows. This guide walks through each section of a standard LOI, provides example language tailored to air duct cleaning transactions, and highlights the negotiation pressure points that determine whether a deal closes at a fair price or falls apart in due diligence.
Find Air Duct Cleaning Businesses to AcquireParties and Business Identification
Identifies the buyer entity, the seller, and the specific legal entity or assets being acquired. For air duct cleaning businesses, clarify upfront whether this is an asset purchase or stock purchase, as most SBA-financed deals in this space are structured as asset acquisitions to avoid inheriting undisclosed liabilities including consumer complaints, unlicensed work claims, or equipment liens.
Example Language
This Letter of Intent ('LOI') is entered into as of [Date] between [Buyer Name or Buyer LLC], a [State] limited liability company ('Buyer'), and [Seller Name], an individual or [Entity Type] ('Seller'), regarding the proposed acquisition of substantially all assets of [Business Legal Name], doing business as [DBA Name], an air duct and dryer vent cleaning services company operating in [City, State] ('the Business'). Buyer proposes to acquire the Business as an asset purchase, including all customer lists, equipment, vehicles, trade name, phone numbers, website, Google Business Profile, and goodwill associated with the Business.
💡 Sellers in this industry frequently operate under a well-known DBA with accumulated Google reviews. Ensure the LOI explicitly names the Google Business Profile, phone numbers, and domain as transferred assets — these are often worth more than the physical equipment. If the business operates as an S-corp or LLC, buyers using SBA financing almost always push for an asset deal; sellers may resist due to tax treatment differences, so address this friction early.
Purchase Price and Valuation Basis
States the proposed total purchase price and the EBITDA or revenue multiple on which it is based. Air duct cleaning businesses with strong NADCA-certified teams, diversified client bases, and documented repeat commercial accounts typically command 3.5x–4.5x EBITDA. Businesses heavily reliant on paid lead aggregators or with aging equipment fleets should be priced at 2.5x–3.0x EBITDA to account for post-acquisition reinvestment risk.
Example Language
Buyer proposes to acquire the Business for a total purchase price of $[Amount] ('Purchase Price'), representing approximately [X.Xx] times the Business's trailing twelve-month adjusted EBITDA of $[Amount] as represented by Seller. The Purchase Price is subject to adjustment following completion of financial due diligence and equipment inspection. The Purchase Price includes all tangible assets (vacuum trucks, negative pressure machines, duct cleaning equipment, and vehicles), customer database, contracts, intellectual property, and goodwill. Inventory of supplies and consumables on hand at closing shall be included in the Purchase Price up to $[Amount], with any excess to be purchased at cost.
💡 Always anchor your LOI to a stated EBITDA figure derived from the seller's representations, not your own projection. This protects your right to renegotiate if due diligence reveals add-backs that don't hold up — particularly discretionary owner expenses, inflated subcontractor costs, or marketing spend that inflated revenue in the trailing twelve months. Request that the seller provide a preliminary adjusted EBITDA summary before LOI execution so you are working from the same number.
Deal Structure and Financing
Outlines how the purchase price will be funded, including any SBA loan component, seller note, earnout, or equity injection. SBA 7(a) financing is common in air duct cleaning acquisitions and typically requires 10–15% equity from the buyer and can accommodate a seller note of 5–10% on standby for the first 24 months. Earnouts are appropriate when revenue is partially tied to a seller-managed commercial relationship or dominant paid lead channel.
Example Language
The Purchase Price shall be funded as follows: (i) approximately [X]% via an SBA 7(a) loan from [Lender Name or 'a qualified SBA lender'], subject to lender approval; (ii) [X]% as a cash equity injection by Buyer at closing; and (iii) [X]% as a seller promissory note ('Seller Note') in the amount of $[Amount], bearing interest at [X]% per annum, with repayment commencing 24 months after closing, subordinated to the SBA loan per SBA guidelines. Additionally, Buyer proposes an earnout of up to $[Amount] payable over 24 months post-closing, contingent on the Business achieving annual revenue of at least $[Amount] during the earnout period, with Seller's cooperation and non-compete obligations as a condition of earnout eligibility.
💡 Sellers in home services often underestimate how long SBA approval takes — communicate a realistic 60–90 day closing timeline upfront to avoid frustration. If proposing an earnout, tie it specifically to revenue retention from commercial accounts or property management contracts the seller actively manages, not total business revenue, which is harder to game and more meaningful as a risk-sharing mechanism. Make clear the earnout is not triggered if Buyer's operational decisions, not seller transition failures, cause revenue decline.
Exclusivity and No-Shop Period
Grants the buyer an exclusive negotiating period during which the seller agrees not to solicit or entertain competing offers. This is critical in air duct cleaning acquisitions where sellers sometimes continue listing on business-for-sale marketplaces even after accepting a verbal offer, or where brokers may run a parallel process to drive up price.
Example Language
In consideration of Buyer's commitment of time and resources to due diligence, Seller agrees to negotiate exclusively with Buyer for a period of sixty (60) days from the date of this LOI ('Exclusivity Period'). During the Exclusivity Period, Seller shall not, directly or indirectly, solicit, encourage, or engage in discussions regarding the sale, merger, or transfer of the Business or its assets with any third party. Buyer may request a 30-day extension of the Exclusivity Period by written notice if due diligence or SBA lender review requires additional time, which Seller shall not unreasonably withhold.
💡 Sixty days is a reasonable ask for an SBA-financed deal. If the seller pushes back, consider offering a modest good-faith deposit of $5,000–$25,000 held in escrow that is refundable only if the buyer walks without cause — this often resolves seller hesitation about exclusivity without shortening your diligence timeline. Never waive exclusivity in a home services deal; without it, you have no protection against the seller using your offer to shop a better price.
Due Diligence Scope and Timeline
Defines the categories of information the buyer requires access to and the timeline for completing review. Air duct cleaning due diligence must specifically address equipment condition and age, technician certifications, customer data quality, and the sustainability of the lead generation model — all areas where sellers may provide incomplete or optimistic information.
Example Language
Buyer's obligation to proceed to a definitive purchase agreement is conditioned upon satisfactory completion of due diligence, including but not limited to: (i) three years of federal and state tax returns and internally prepared P&L statements; (ii) a complete equipment inventory including make, model, year, service history, and estimated replacement value for all vacuum trucks, negative pressure machines, and ancillary duct cleaning equipment; (iii) documentation of all current NADCA certifications, contractor licenses, and technician background check policies; (iv) customer database export segmented by residential, commercial, and repeat clients with service history; (v) all commercial service agreements, property management contracts, and maintenance plan agreements; (vi) documentation of all marketing channels, monthly spend by channel, and lead volume by source for the trailing 24 months; and (vii) any BBB complaints, state licensing actions, or pending litigation. Buyer shall complete its due diligence review within forty-five (45) days of receiving complete access to the above materials.
💡 The marketing channel audit is one of the most overlooked items in duct cleaning acquisitions. Request a Google Analytics export and paid search account summary — if 60%+ of revenue traces back to Angi or HomeAdvisor leads, your post-acquisition lead cost will likely increase. Also request the Seller's Google Business Profile insights showing review count growth over time, as this is a proxy for organic brand strength that is difficult to manufacture quickly.
Employee and Technician Retention
Addresses the buyer's expectation that key technicians and operational staff will remain with the business through and after closing. In air duct cleaning, a lead NADCA-certified technician who is also responsible for upselling additional services — dryer vent cleaning, coil cleaning, sanitization — may represent a significant portion of gross revenue. Losing this person post-close can materially impair business performance.
Example Language
Buyer's obligation to close is conditioned upon: (i) the continued employment through the closing date of [Lead Technician Name or 'the lead NADCA-certified technician currently employed by the Business'], and (ii) Seller's reasonable cooperation in facilitating introductions between Buyer and all current full-time and part-time technicians during the due diligence period. Seller shall not, between the date of this LOI and closing, terminate, demote, or materially alter the compensation of any technician without Buyer's prior written consent. Buyer intends to offer employment to all current technicians on substantially similar terms as their current compensation arrangements.
💡 If the business has only one or two technicians, consider making retention of the lead tech a closing condition rather than just a preference. In smaller duct cleaning operations, a single NADCA-certified tech often drives both production quality and customer trust — their departure would require the buyer to invest in hiring and certification before reaching prior revenue levels. If the seller is the primary technician, negotiate a transition services agreement of 60–90 days rather than traditional employment.
Non-Compete and Transition Services Agreement
Establishes the geographic scope and duration of the seller's non-compete obligation and the terms of any post-closing transition support. In air duct cleaning, where the seller often has direct relationships with commercial property managers and repeat residential customers, a robust non-compete and a well-structured transition plan are essential to protecting goodwill value.
Example Language
As a condition of closing, Seller shall execute a non-competition agreement prohibiting Seller from directly or indirectly engaging in the air duct cleaning, dryer vent cleaning, or indoor air quality services business within a [50-mile] radius of [Primary Service Area City/Metro] for a period of [four (4) years] following the closing date. Seller further agrees to provide transition services to Buyer for a period of [60–90 days] post-closing, including introduction of Buyer to all commercial accounts, property management companies, and key referral partners. Transition services shall be compensated at $[Amount] per month or included as part of the seller's total consideration at Buyer's election.
💡 Four years is the standard SBA-required minimum non-compete for goodwill-based acquisitions financed through SBA 7(a) loans. Sellers sometimes resist broad geographic restrictions — if the business truly only operates in a defined metro, a 50-mile radius is defensible and proportionate. Pay particular attention to carve-outs; sellers sometimes attempt to exclude 'HVAC installation' or 'system maintenance' from the non-compete while planning to re-enter duct cleaning under a different service category.
Conditions to Closing
Lists the specific conditions that must be satisfied before the buyer is obligated to proceed to closing. These conditions protect the buyer from being forced to close if material facts change or due diligence reveals undisclosed risks.
Example Language
Buyer's obligation to close the transaction contemplated by this LOI shall be conditioned upon, among other things: (i) completion of financial, legal, and equipment due diligence to Buyer's satisfaction; (ii) receipt of SBA 7(a) loan approval from a qualified lender on terms acceptable to Buyer; (iii) execution of a definitive asset purchase agreement and all ancillary transaction documents; (iv) confirmation that all contractor licenses, NADCA certifications, and operating permits are current and transferable or re-issuable to Buyer; (v) no material adverse change in the Business's revenue, customer relationships, or key personnel between LOI execution and closing; and (vi) Seller's delivery of a complete and accurate equipment inventory with no material undisclosed liens or encumbrances on any transferred equipment or vehicles.
💡 The 'no material adverse change' clause is particularly important in seasonal home services businesses — if the seller drags out closing through peak season and hands you a business entering slow season with lower revenue, you need contractual protection. Define 'material adverse change' with a specific revenue threshold, such as any month where revenue falls more than 20% below the trailing twelve-month monthly average, to avoid ambiguity at closing.
Purchase Price Adjustment Mechanism
Air duct cleaning financials often include significant owner add-backs — personal vehicles, family wages, and discretionary marketing spend. Negotiate a post-due-diligence price adjustment clause that allows you to revise the purchase price downward if adjusted EBITDA falls more than 10% below seller representations after normalizing for add-backs that are non-transferable or unsustainable under new ownership.
Equipment Escrow or Credit
Vacuum trucks and negative pressure machines are capital-intensive assets that are difficult to assess without a physical inspection. Negotiate an equipment escrow of 5–8% of the allocated equipment value to be held for 90 days post-closing, released upon confirmation that all major equipment is in the working condition represented by the seller. Alternatively, negotiate a dollar-for-dollar purchase price credit for any equipment requiring immediate repair or replacement above a $5,000 threshold.
Commercial Account Transition Risk
If one commercial property management company or HOA accounts for more than 15% of revenue, negotiate a revenue-based earnout specifically tied to the retention of that account for 12 months post-closing. Structure this as a reverse earnout — the seller receives full consideration if the account is retained, but a portion is withheld if the account is lost within the first year, regardless of the reason.
Paid Lead Source Dependency Disclosure
Require the seller to disclose the exact monthly spend and revenue attributable to Angi, HomeAdvisor, Thumbtack, and similar aggregators as a condition of the LOI. Negotiate a representation and warranty that organic lead volume (Google Business Profile calls, direct repeat bookings) constitutes at least [X]% of total job volume — and tie a price adjustment to this representation if it proves false in due diligence.
Seller Note Acceleration Triggers
If part of your deal structure includes a seller note, negotiate clear acceleration triggers that allow you to offset or suspend seller note payments if the seller violates the non-compete, fails to fulfill transition obligations, or if a material misrepresentation discovered post-closing reduces business value. This is your primary recourse mechanism in smaller deals where escrow amounts are insufficient to cover significant breaches.
Find Air Duct Cleaning Businesses to Acquire
Enough information to write a strong LOI on day one — free to join.
Air duct cleaning businesses with $1M–$3M in revenue typically sell for 2.5x–4.5x EBITDA, with the multiple driven by brand strength, revenue diversification, and team independence. A business with strong organic Google reviews, NADCA-certified technicians, and a mix of residential and commercial contracts warrants the higher end of that range. Anchor your LOI to a specific EBITDA figure derived from the seller's representations, state it explicitly in the LOI, and include a price adjustment clause allowing renegotiation if due diligence reveals the EBITDA was overstated by more than 10%.
Almost all air duct cleaning acquisitions are structured as asset purchases, particularly when SBA financing is involved. An asset purchase allows you to acquire the customer list, equipment, trade name, goodwill, and contracts without inheriting the seller's corporate liabilities — including undisclosed consumer complaints, pending licensing violations, or equipment liens. The exception is when the business holds transferable commercial contracts or licenses that are difficult to reassign, in which case a stock purchase with comprehensive reps and warranties may be necessary. Always have a transaction attorney review the specific licensing requirements in your state before committing to structure in the LOI.
Heavy reliance on paid lead aggregators is a significant risk factor that should be addressed directly in your LOI. Include a due diligence condition requiring the seller to provide a 24-month breakdown of revenue by lead source, and tie a portion of your purchase price to the verification of organic lead volume. If paid lead sources account for more than 40% of jobs, consider negotiating a lower EBITDA multiple to reflect the higher ongoing customer acquisition costs you will inherit, or structure an earnout that rewards the seller only if revenue is maintained after you reduce or restructure the paid lead spend post-closing.
Include three key technician provisions in your LOI: first, a retention condition requiring the lead NADCA-certified technician to remain employed through closing; second, a prohibition on the seller altering any technician's compensation or employment status between LOI execution and closing without buyer consent; and third, a commitment that the seller will facilitate direct introductions between the buyer and all technicians during the due diligence period. If the seller is also a working technician, require a transition services agreement of at least 60–90 days rather than standard post-close employment, and define specific deliverables such as customer introductions, route familiarization, and equipment training.
Sixty days is standard and appropriate for SBA-financed air duct cleaning deals, with an option to extend by 30 days if SBA underwriting requires additional documentation. Sellers may push for a shorter period — 30 days — or attempt to retain the right to continue accepting inquiries from other buyers. Resist both. You cannot complete a meaningful equipment inspection, financial audit, customer data review, and SBA pre-approval process in 30 days. To address the seller's concern about being locked up with a non-serious buyer, consider offering a modest refundable good-faith deposit of $10,000–$25,000 in escrow, which provides the seller financial protection during the exclusivity period without shortening your diligence runway.
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