What carries value in an HVAC business

Below the headline split

The parent sector page makes the first distinction, which is between planned maintenance, reactive work and installation. That split decides roughly what kind of business you are looking at.

It does not decide what the maintenance book is worth. Two businesses with the same proportion of contracted revenue can be worth materially different money and can be funded on materially different terms, and the reasons are all one level further down. This page is that level.

Not all maintenance contracts are the same risk

The most important distinction inside the book is what the contract actually promises. Broadly there are three kinds, and they behave like different products.

Labour only. The visit is included, parts are charged separately. Low risk, predictable margin, and every failure generates additional billable work.
Comprehensive. Parts and labour included within defined limits. Higher price, and the contractor now carries the failure risk of plant they did not install and may not have chosen.
Fully inclusive, including replacement. Rare in smaller businesses and worth identifying immediately, because a replacement obligation on ageing plant can turn a profitable contract into a loss in a single visit.

A book that is largely comprehensive is not worth less than a labour-only book. It is worth a different thing, and the assessment of it depends entirely on the condition of the plant behind it. Buyers who price the book as one number, without splitting it this way, are guessing.

Whether the price can move

The most overlooked clause in an HVAC contract file is the one about price. A contract that has run for years without an indexation or annual review provision has been quietly getting worse every year, because engineer wages have not stood still.

Three things are worth extracting from every significant contract: whether there is a price review mechanism at all, what it is linked to, and when it was last applied. The third is the one that catches people. A contract with a perfectly good annual review clause that nobody has ever exercised is a contract at an old price, and the new owner asking for the first increase in six years is the new owner having an awkward conversation in month two.

The opposite is also worth knowing. A book where increases have been applied consistently, and the customers stayed, is evidence of pricing power, which is one of the few things in a service business that a lender can see from the outside.

Where the sites are

Two books of identical contract value can carry very different cost, and the reason is geography. An engineer's day is travel plus time on site. Contracts clustered in one city produce more chargeable hours per engineer than the same contracts spread across three counties.

Density also decides whether reactive work is profitable. A callout twenty minutes away can be absorbed into a working day. The same callout ninety minutes away either costs a day or gets scheduled a week later, which is how service reputations are lost.

Map the sites before agreeing a price, and map the buyer's existing sites onto the same picture if there are any. A bolt-on that fills a gap in an existing round is worth more to that buyer than to anyone else, and that is a legitimate reason to pay more without overpaying. See bolt-on acquisitions.

The age of the plant you are inheriting

The installed base under contract is an asset in its own right, and its age profile tells you where the next few years of revenue and risk sit.

Older plant generates more reactive work and more replacement enquiries, which is revenue, and more failures under comprehensive cover, which is cost. Newer plant, still under manufacturer warranty, generates little of either. A book heavy with equipment approaching the end of its life is a pipeline of replacement projects for a business set up to win them, and a liability for one that is not.

This is why the asset register matters beyond tidiness. A business that knows the make, model, age and service history of the plant on every site can plan replacements, price them properly and win them. A business without that record is starting each conversation from nothing, and the customer knows it.

Attachment rate: the number nobody calculates

Maintenance revenue is the anchor. The money is often made on what it drags behind it: reactive callouts, parts, remedial works and replacement projects that exist because the engineer is already in the building and the customer already trusts them.

Work out how much non-contract revenue each pound of maintenance revenue pulls with it, over two or three years so the peaks average out. That ratio is a genuine measure of the quality of the book, and it varies far more between businesses than the contract value does.

A high ratio also changes how the deal should be structured, because it means more of the value depends on the customer relationship continuing rather than on a contract term. That points towards more deferred consideration and a longer handover, not less. See deferred consideration and earn-outs.

The engineers, in economic terms

The parent page says the engineers matter. Here is what to measure:

Utilisation. Chargeable hours against paid hours, per engineer, across a year. This exposes over-staffing and under-staffing faster than any conversation with the seller.
First-time fix. How often a reactive callout is resolved on the first visit. A second visit is a repeated travel cost, an unhappy customer, and margin gone.
Age and succession. Refrigeration and controls engineers are not quickly replaced. A team whose senior people are close to retirement is a cost that has not appeared yet.
Notice periods and restrictive covenants. An engineer with a week's notice and no covenant can take a route to a competitor with the customers on it.
Apprentices. Expensive now and the only durable answer to the previous three points. Their presence is a sign of a business that has been run for the long term.

Accreditations, records and the things that transfer awkwardly

Some of the value in an HVAC business is permission rather than property. Manufacturer approvals, warranty agent status, refrigerant handling certification held at company level, and scheme memberships all affect what work the business can win and at what price.

Each of them transfers on its own terms, and some do not transfer at all without the granting body's agreement. Establish for each one whether it survives a change of ownership, whether it depends on a named individual, and what the reapproval process involves if it does not. Certification held personally by a departing owner is the version of this problem that stops work the day after completion, and it is dealt with before exchange or not at all.

Statutory and compliance records belong in the same category. Complete logbooks, refrigerant records and inspection reports make the service sticky, because a customer who would have to rebuild that history elsewhere thinks harder about moving. Poor records do the reverse and leave the buyer holding a compliance exposure they did not price.

What quietly destroys value

Comprehensive cover on plant nobody has surveyed. The single fastest way to buy a loss-making contract.
A warranty tail on past installations. Work done before completion that comes back afterwards, unquantified and unallocated in the agreement.
Retentions on project work. Cash held by customers, sometimes for years, that appears in the accounts as a debtor and behaves like a hope.
Sub-contract dependence. A business that delivers much of its work through the same two sub-contractors has less control over cost and quality than its accounts suggest.
One managing agent holding the portfolio. Where the contracts sit with an agent rather than the building owners, the whole group can move with one relationship. See customer concentration.

How this shows up in the funding

Everything above changes what can be borrowed, not just what should be paid. A book with indexed contracts, dense geography, a young installed base and engineers who are staying supports a longer term and a larger facility than a book of unindexed comprehensive contracts spread across a region and serviced by two people close to retirement.

Get the tangible assets working for you as well. Vans and plant can usually carry their own asset finance, which leaves the main facility for the goodwill, and buyers routinely miss that because they ask one lender for one facility. See stacking facilities and service contracts and lender comfort.

The point of all of it is that a maintenance book is legible to somebody who has funded one and opaque to somebody who has not. We know this market and we know specific people who have lent against HVAC maintenance books before and understand that a contract schedule is the asset. Tell us the split, the renewal history and the shape of the deal, and we come back to you with who can fund it and what they will want to see.

We introduce buyers who are acquiring through a limited company or a NewCo. If you are buying personally, as a sole trader or as a partnership, we will point you to an authorised firm directly instead.