Gas Safe, F-Gas and What Registration Is Worth at Sale

What MovesRegistration follows the legal entity, not the goodwill

Gas Safe registration belongs to the business that holds it, not to the trading name on the van. That single fact decides most of what happens to it in a sale. If a buyer acquires the shares in your limited company, the company keeps its registration and carries on, because nothing about the registered entity has changed. If the buyer acquires the trade and assets instead, they are a different legal person doing the work, and the registration does not travel with the customer list.

The same logic runs through the rest of the paperwork. An F-Gas company certificate under the GB F-Gas Regulation is issued to a company by a certification body, and REFCOM is the one most owners in this trade deal with. MCS accreditation for heat pump work sits with the accredited business. OFTEC registration for oil appliances sits with the registered business. In a share sale these continue; in an asset sale the acquirer needs its own, and the engineers' individual cards and personnel certificates have to be re-issued against the new employer.

None of that stops an asset deal happening, and plenty of them do. It changes the timetable, because certification bodies work to their own audit schedules rather than to a completion date, and it changes who carries the risk of a gap. Sellers who understand the distinction early tend to end up in a share sale, which is usually the structure they wanted anyway for tax reasons, and which is a conversation for their accountant rather than for me.

The practical consequence for a seller is simple enough. Before anyone starts drafting, establish which of the two structures the buyer has in mind, because the answer changes what you need to prove and how long it takes to prove it.

The PremiumA buyer is paying to avoid building the capability themselves

The reason certification shows up in a price is that the alternative is slow. An acquirer who wants to work on commercial air conditioning without an F-Gas certified team can train and certify one, and it will take months of assessment, audit and supervised work to get there. Buying a business that already holds the certificates, with engineers whose personnel categories are current, removes that wait entirely. That is what is being paid for: not the certificate, the years behind it.

It matters more in refrigerant work than anywhere else in this trade, because the supply side is tightening on a published schedule. The GB HFC phasedown steps down again on 1 January 2027, when supply falls to 24% of the 2015 baseline. Whatever that does to prices, it makes competent handling, recovery and leak testing more valuable rather than less, and a business with a properly certified team is positioned on the right side of it.

Gas Safe registration is priced differently, because it is the entry ticket rather than the differentiator. Every legitimate competitor has it. What a buyer reads is the detail behind it: how many engineers are on the register through your business, which work categories each card actually covers, and whether the categories match the work you are selling them. A business whose commercial catering or industrial pipework revenue rests on one engineer's card is a concentration risk with a certificate attached.

Owners tend to underrate all of this because it is administrative and they have held it for twenty years. Buyers do the opposite. In the screening stage, before anyone has visited a site, the certifications and the engineer headcount behind them are close to the only objective thing an acquirer can read about your capability.

The EvidenceThe file that turns a claim into a priced asset

Everything above only counts if it can be evidenced quickly. The file a buyer eventually asks for is the same every time: current Gas Safe registration for the business, the list of registered engineers with their card numbers and expiry dates, the F-Gas company certificate with its issue and renewal dates, personnel certificates by category for each engineer, MCS and OFTEC registrations where they apply, and the last audit reports from each certification body.

Assembling that file is a February job rather than a diligence job. In diligence it is a bottleneck, because half the documents live in an engineer's van or an email from 2019, and the buyer's adviser is charging by the hour while you look. Assembled in advance, the same documents take a week to produce and make the business look exactly like what it is, which is well run.

Keep the renewal dates in one place as well. A certificate that lapses during a sale process is a small administrative failure that reads, from the other side of the table, as evidence about how the business is run generally. Nothing in a heating or air conditioning sale is priced on a single document, but the impression created by the state of the documents is priced on all of them.

Assembled in advance, the same documents take a week to produce and make the business look exactly like what it is, which is well run.