Starting and growing a heat pump installation business (UK 2026)

Heat pump installation is one of the highest-growth sectors in UK construction right now. Government targets, rising energy costs and new building regulations are creating sustained demand that is outpacing the number of qualified installers. If you are a heating engineer considering specialising in heat pumps — or you have already started and want to grow faster — this guide covers every major decision: getting MCS certified, pricing installs correctly, navigating the Boiler Upgrade Scheme, and building the kind of commercial relationships that provide consistent volume.

The heat pump market opportunity

The UK government's Net Zero Heat target requires 600,000 heat pump installations per year by 2028. In 2024, the UK installed approximately 70,000 — a significant gap. The Boiler Upgrade Scheme (BUS) provides £7,500 grants for air source heat pump installations (ASHPs) and £7,500 for ground source heat pumps (GSHPs), making heat pumps significantly more accessible for homeowners. Uptake has been rising quarter-on-quarter since the grant was increased in 2023.

Beyond residential, the new buildings market is substantial. From 2025, the Future Homes Standard has required all new-build homes to produce 75–80% less carbon than equivalent homes built under 2013 standards — which in practice means heat pumps rather than gas boilers for most developers. This is a structural tailwind that will run for at least a decade.

The key constraint is installer capacity. MCS-certified heat pump installers remain in short supply relative to demand, which gives qualified businesses pricing power and the ability to be selective about which jobs they take.

Getting MCS certified — the route and cost

MCS (Microgeneration Certification Scheme) certification is mandatory for businesses whose customers want to claim the BUS grant or Smart Export Guarantee. Without MCS, you can still install heat pumps — but your customers cannot access government funding, which makes you uncompetitive for almost every residential job.

The route to MCS certification for heat pump installers involves:

• Gaining the underpinning qualification. You must hold a Level 3 qualification in a relevant discipline (plumbing or heating) and complete a heat pump specific qualification — typically the City & Guilds 6188-01 (ASHP) or 6188-02 (GSHP), or the equivalent BPEC unit. These are available through training providers across the UK and take 3–5 days of classroom and practical assessment. Expect to pay £800–£1,400 per unit.
• Joining an MCS-certified body. You apply for MCS certification either directly or via an MCS-licensed certification body (such as NAPIT, NICEIC or HIES). The certification body audits your quality management system, your insurance and your installation processes.
• Initial audit. A certified auditor will review a completed heat pump installation. This usually happens on your first or second real installation after training. The auditor checks heat loss calculations, refrigerant handling records, commissioning data and customer documentation.
• Annual fee and ongoing audits. MCS membership costs approximately £700–£1,200 per year depending on the certification body. Ongoing audits are typically annual, with additional checks possible if complaints are raised.

Total cost to get MCS certified from scratch — training, certification body fees, quality management system setup — is typically £2,500–£4,000. This is recovered in a fraction of the first install.

Pricing heat pump installations

Heat pump pricing is significantly higher than boiler replacement and must account for the system design work (heat loss calculations, hydraulic design), longer installation time, and the cost of specialist equipment. The Boiler Upgrade Scheme grant is applied as a voucher that you redeem directly from the government — the customer pays the net price after grant.

Typical residential ASHP installation pricing in 2026 (before BUS grant):

• Small house, 8kW ASHP: £10,000–£12,000 installed
• Medium house, 11kW ASHP: £12,000–£15,000 installed
• Larger house, 14kW ASHP: £14,000–£18,000 installed
• GSHP (ground source) 10kW: £18,000–£28,000 including ground loop

With the BUS grant reducing customer cost by £7,500, a homeowner paying £13,000 for an ASHP install is effectively paying £5,500 net. This makes heat pumps competitive with a premium gas boiler replacement in many cases, and the grant substantially broadens the addressable market.

Your labour margin on a heat pump install should target 40–50% on the labour element. System design, heat loss calculations and BUS grant administration add time — make sure this is priced in. A typical 2-day ASHP installation requires around 1 day of pre-installation design work. Do not absorb this for free.

The BUS grant workflow and your role in it

As an MCS-certified installer, you are responsible for managing the BUS grant application on behalf of your customer. The process runs as follows: you check property eligibility (the property must have a valid EPC, must not already have a heat pump, and must not have received a previous BUS voucher), you register the installation on the MCS portal before work starts, you complete the installation, you submit commissioning data and MCS certificate to the portal, and you redeem the voucher — typically within 3 months of installation. The grant is paid directly to you as the installer; the customer pays their net price.

The administration is not onerous once you have done it a few times, but it does require accurate record-keeping. Keep the heat loss calculation, system design drawings, MCS certificate, commissioning sheets and BUS voucher redemption confirmation for every job — both for your own audit compliance and in case of any customer queries about their EPC or future property sale documentation.

Winning housing developer contracts

New-build housing developers represent a high-volume, predictable pipeline for MCS-certified heat pump businesses. A developer building 50 homes per year is a consistent source of 50 installations — at a lower margin per unit than residential retrofits, but with far lower sales and admin costs per job.

To approach developers, start with small regional housebuilders and self-build developers rather than the national volume builders (who have established supply chains). Visit local planning applications — publicly available through council portals — and identify new residential schemes where heat pumps are specified in the planning conditions or sustainability statement. Contact the developer or main contractor directly, introduce your MCS credentials, and offer to carry out a free heat loss assessment for one plot as a demonstration.

Developer contracts require you to work to programme. Your installation must be completed in a specific window between first and second fix — if you miss the slot, you delay the plot handover and damage the relationship. Make sure your capacity and scheduling can handle this before committing.

Marketing heat pump installs effectively

Residential heat pump demand is still largely driven by proactive homeowners researching online. The most effective marketing channels for MCS-certified heat pump businesses in 2026 are:

• Google Ads. Keywords like “heat pump installer [city]” and “air source heat pump installation” are high-intent. A well-managed campaign targeting your area can deliver qualified leads at £60–£120 per enquiry. The conversion rate from enquiry to survey to install is lower than boiler replacement, so factor this into your cost per acquisition.
• Which? Trusted Traders. Which? runs a specific heat pump installer listing. Homeowners using this channel are self-selecting for quality — they are prepared to pay for a credible installer rather than just the cheapest quote. Listing costs approximately £200–£300 per month.
• Home Energy Scotland. If you operate in Scotland, Home Energy Scotland (the Scottish government's energy advice service) maintains a recommended installer list and refers homeowners direct. Register your business and ensure your contact details are current.
• Google Business Profile. Ensure your GBP is optimised for heat pump keywords and that you are accumulating reviews specifically mentioning heat pump installation. These reviews influence both your local ranking and your conversion rate.

Building a referral network with architects and surveyors

Architects specifying heat pumps for extensions and new builds, energy assessors producing EPCs, and surveyors advising on property upgrades are all potential referral sources for a heat pump installation business. The relationship works because they benefit from having a reliable MCS-certified installer to recommend — it makes them look good to their clients and reduces the risk of their specification not being delivered.

Identify architects within your area who are working on residential extensions and new builds with sustainable specifications. Introduce yourself, leave your MCS certificate and a case study from a comparable project, and make it easy for them to pass your name on. Follow up with a written case study after any notable installation — architects share these within their networks.

Energy assessors who produce EPCs are another underused referral source. When a homeowner receives an EPC with a heat pump recommendation, the assessor is often the first person they ask for installer recommendations. Build relationships with local EPC assessors and you can generate referrals at effectively zero cost.

Trade2Base for heat pump businesses

Heat pump installations require more pre-job documentation than standard boiler replacements — heat loss calculations, system design records, MCS registration details, BUS grant voucher references. Trade2Base lets you attach all of this documentation to the job record, so every installation has a complete file you can access at any time.

Quotes for heat pump jobs can be built from templates in Trade2Base, pre-populated with your standard line items (ASHP unit, cylinder, controls, commissioning, BUS admin fee) and adjusted per job. The quote-to-invoice workflow means once a job is accepted, the invoice is generated automatically on completion — with your MCS number included as standard.

For businesses targeting developer volume, Trade2Base's recurring job and multi-site scheduling tools make it straightforward to manage pipeline across multiple plots on the same development. You can see at a glance which plots are surveyed, quoted, accepted, installed and invoiced — giving you the operational visibility that developer clients expect from a professional installation partner.