Common questions about selling an HVAC business.
Clear, honest answers to the questions HVAC business owners ask most often.
Update, November 2026. The October 2026 Budget announced that the Business Asset Disposal Relief lifetime limit will fall from £1 million to £500,000 for qualifying disposals from the start of the 2027 to 2028 tax year in April 2027. Relief already claimed counts towards the limit, and the 18% rate does not change. For tax, the date of an unconditional contract normally counts as the date of disposal rather than completion, and specific rules will apply to contracts signed before the change that complete after it. Where this page quotes a different limit, rate or date, this note takes priority. Take advice on your own position. What the change means for owners.
Valuation
The value of an HVAC business depends on several factors including recurring maintenance contracts, team qualifications (Gas Safe, F-Gas, MCS), heat pump capability, owner dependency, meaning how far the business relies on you personally, and financial performance. Have a free first conversation with Simon or Emily, in confidence. The paid Snapshot is a written, indicative view of value, and what to fix first.
HVAC businesses sell on a multiple of EBITDA: the yearly profit from day-to-day work, before loan interest, tax and wear on vans and kit, multiplied by an agreed number. Businesses at the higher end tend to have strong recurring contract bases, Gas Safe, F-Gas, and MCS qualified teams, low owner dependency, and heat pump installation capability. Businesses at the lower end are often reactive and domestic-heavy, with the owner as the primary engineer.
Yes, materially. Buyers are paying premium multiples for businesses with MCS accreditation and active heat pump installation capability because of the 2035 gas boiler phase-out. Businesses that have already made the transition to renewable heating are more valuable than those that have not started, as buyers save on retraining costs of £3,000 to £5,000 per engineer and accreditation timelines.
The Gas Safe registration is held by the business entity, not the individual. If the buyer acquires the company via a share sale (buying your shares, so the company itself carries on), the registration continues. In an asset sale, where the buyer buys the vans, contracts and name rather than the company, the buyer needs to register separately. Your qualified engineers still move across under TUPE, the rules that transfer staff to a new employer on their existing terms, so the buyer can register quickly with an existing qualified workforce.
SDE (Seller's Discretionary Earnings) adds back the owner's salary and personal expenses to the profit figure. It is typically used for smaller, owner-operated businesses. EBITDA (Earnings Before Interest, Tax, Depreciation, and Amortisation) is used for larger businesses with professional management. For most HVAC SMEs, buyers look at adjusted EBITDA, which adds back one-off costs and non-recurring expenses to give a clearer picture of ongoing profitability.
The Sale Process
The typical timeline from initial conversation to completion is 6 to 9 months. The early stages of valuation and buyer approaches take 4 to 6 weeks, with the remainder spent on meetings, offers, due diligence (the buyer's detailed check of your business), and legal completion. We never rush the process, and every sale moves at the pace that is right for you.
Not unless you choose to tell them. Confidentiality is the foundation of our process. We use anonymised teasers, short summaries that do not name you, when approaching buyers, and no identifying information is shared at any stage without your express approval. Your engineers, office staff, and clients will not know you are considering a sale.
Your engineers are protected either way. If the buyer buys your company's shares, the employer does not change and their terms, pay, qualifications and Gas Safe or F-Gas registrations carry on as they are. If the buyer buys the business's assets, TUPE (Transfer of Undertakings Protection of Employment) regulations transfer their employment terms and pay automatically to the new owner. Most buyers actively want to retain qualified engineers, as they are one of the most valuable assets in the business.
Yes. Most buyers expect a handover period of 3 to 6 months. During this time you help introduce the new owner to key clients, suppliers, and staff. Longer arrangements are negotiable. Some owners stay on in a reduced role, while others prefer a clean break after the handover period.
Buyers typically want to review: 3 years of accounts, your maintenance contract list, employee records and qualifications, Gas Safe and F-Gas certificates, insurance policies, fleet inventory, health and safety records, and any MCS accreditation documentation. We guide you through exactly what is needed at each stage so there are no surprises.
Tax and Timing
Business Asset Disposal Relief (BADR) provides a reduced rate of Capital Gains Tax, the tax on the gain you make when you sell, on qualifying business disposals up to £1 million, falling to £500,000 from April 2027. The tax rate under it went up from 10% to 14% in April 2025, and again to 18% in Apr 2026, so owners now keep a little less of a sale. On a £500,000 gain, the difference between 14% and 18% is £20,000 in additional tax. On £1 million, the difference is £40,000.
The amount of tax you pay depends on your personal circumstances, the structure of the sale (share sale vs asset sale), and whether you qualify for Business Asset Disposal Relief. BADR has provided an 18% rate on qualifying gains up to £1 million since Apr 2026, up from 14%. The limit falls to £500,000 from April 2027. Gains above the limit are taxed at the standard Capital Gains Tax rate. Always take personal tax advice from your accountant.
The BADR rate change from 14% to 18% is legislation, not speculation. It is confirmed in the Finance Act. On every £100,000 of qualifying gain, the difference is £4,000 in additional tax. Whether this constitutes urgency for you depends on your personal circumstances and whether you were already considering a sale.
Only if you were already considering a sale. Rushing a sale to save tax can cost you more in a lower sale price than you would save in tax. However, if selling is something you have been thinking about, starting the process now gives you options. A well-prepared sale that completes at the right price is better than a rushed sale at a discount.
Buyers and the Market
HVAC businesses attract several types of buyer: platforms owned by private equity firms, the investors that buy companies to grow and sell on, building national heating and cooling portfolios, national HVAC groups expanding geographically or adding capability (such as heat pump services), regional firms in your own trade looking to grow, and qualified individuals entering the sector. The buyer type affects the deal structure, price, and what happens to your business after the sale.
Private equity buyers typically look for: recurring maintenance contracts providing predictable revenue, qualified Gas Safe and F-Gas engineering teams, geographic density within their target regions, professional management and systems, heat pump capability and MCS accreditation, and the potential to grow the business after acquisition.
It depends on the buyer type. PE-backed platforms may invest in systems, marketing, and additional engineers to accelerate growth. Trade buyers, businesses in your own trade, may integrate your business into their existing operation, combining back-office functions. Individual buyers often continue operating the business as-is. We help you understand what each buyer type means for your business, your team, and your clients.
Preparation
The most impactful steps are: increase the proportion of recurring maintenance contracts, reduce your personal involvement in day-to-day operations, formalise all contracts in writing, maintain your fleet and equipment, ensure Gas Safe, F-Gas, and MCS compliance is current, and invest in heat pump training for your engineers. Even small improvements in these areas can materially affect your valuation.
Yes. Buyers will want to see at least 3 years of accounts. Clean, well-prepared accounts make the due diligence process faster and give buyers confidence. If your accounts include personal expenses or one-off costs that a new owner would not carry, these can be "added back" to your profit to calculate adjusted EBITDA, but they need to be clearly documented and justifiable.
Similar to Gas Safe registration, F-Gas certification is held at company level. In a share sale, the certification continues with the company. In an asset sale, the buyer registers for F-Gas certification separately, but the process is straightforward when the certified engineers transfer under TUPE. Buyers value F-Gas certification because it enables refrigeration and air conditioning work.
If your sale is a few years away, see what to work on first and who helps with each part.
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