Heat pump installation training and certification UK

The heat pump market in the UK is one of the few areas of the trade where the work is genuinely expanding year on year. The government's Boiler Upgrade Scheme (BUS) is still running in 2026, offering homeowners £7,500 off the cost of an air source or ground source heat pump, with the 2025/26 budget set at £295 million. For installers, that translates directly into a growing pipeline of enquiries.

If you're already working as a heating engineer, plumber, or renewables installer, adding heat pump certification to your qualifications is one of the more sensible moves you can make right now. This guide covers exactly what you need, how long it takes, and what it will cost you.

Why heat pump work is worth pursuing

Heat pumps aren't a passing trend. The UK has a legal target to reach net zero by 2050, and low-carbon heating is central to that. Gas boiler sales are being restricted going forward, and lenders and surveyors are already factoring heating systems into property valuations.

For a qualified installer with MCS accreditation, the BUS scheme is particularly useful because it is entirely installer-led. You apply for the grant voucher on the homeowner's behalf, deduct the £7,500 from your invoice, and claim it back from Ofgem. That makes you the gatekeeper to government money, which is a strong sales position.

Average air source heat pump installations currently run from £8,000 to £15,000 including materials and labour. With the grant applied, a homeowner's net cost sits at £500 to £7,500 depending on the job. That's a workable price point that keeps the phone ringing.

What qualifications do you need to install heat pumps?

There is no single magic certificate. Instead, you need a combination of existing competencies and a heat pump-specific qualification. Here's how it breaks down.

Pre-requisite competencies

Before you can sit a heat pump course, training providers and MCS expect you to already hold evidence of competence in the following areas:

• At least three years' experience installing wet central heating systems, evidenced by Gas Safe registration, OFTEC registration, or equivalent
• Water Regulations / Water Byelaws (WRAS, BPEC, or ERC certificate)
• Unvented Domestic Hot Water Storage (UVDHW) — an ERS or BPEC unvented cylinder certificate
• Energy efficiency for domestic heating — City and Guilds 6084 or equivalent

If you're a Gas Safe registered heating engineer with a few years on the tools, you almost certainly have most of these already. If you're coming from plumbing or renewables, check your existing certificates against this list before booking a course.

The main heat pump qualifications

There are two main qualification routes recognised for MCS purposes in the UK.

BPEC Level 3 Award in Heat Pump Systems — BPEC (the Building and Plumbing Engineering Council) offers a qualification specifically mapped to the National Occupational Standards for heat pump installation. The full title is the BPEC Domestic Air Source Heat Pump and Domestic Ground Source Heat Pump qualification. It covers system design, heat loss calculations, commissioning, and fault-finding. Most BPEC courses run over four days, though this varies depending on your prior experience.

City and Guilds Level 3 Award in the Installation and Maintenance of Heat Pump Systems — City and Guilds offers an equivalent qualification. Some training centres run City and Guilds rather than BPEC; both are accepted for MCS purposes.

You can find approved training centres through the Energy Saving Trust's heat pump installer toolkit and directly on the MCS website's course finder.

MCS certification

MCS (Microgeneration Certification Scheme) certification is what allows you to install heat pumps under the BUS scheme and issue the certificates homeowners need. Without it, you can physically install a heat pump, but the homeowner cannot claim the grant and the installation won't be formally certified.

MCS certification is held at company level, not individual level. So you need to either set up your own MCS-certified company or work under an MCS-certified employer. The process involves:

1. Completing an MCS-approved heat pump qualification (BPEC or City and Guilds)
2. Applying to an MCS-approved certification body (such as NAPIT, HIES, or RECC)
3. Undergoing an assessment of your business processes, insurance, and technical documentation
4. Paying annual certification fees

The MCS certification itself is valid and the qualification is recognised for five years, after which a refresher assessment is required.

How long does training take?

The heat pump course itself is typically four days. If you need to pick up missing pre-requisites first, add time for those. A heating engineer who already has Gas Safe, an unvented cylinder certificate, and water regulations training can realistically be course-complete within a week.

Getting MCS certification after that takes longer because the certification body needs to assess your business. Allow four to eight weeks from application to approval, though this varies between certification bodies.

What does it cost?

Course fees vary by provider and location but a BPEC heat pump systems course typically costs between £600 and £1,200. Some providers include accommodation and materials; others don't, so read the small print.

If you're employed or registered with CITB, check whether you're eligible for a CITB grant before paying the full price. CITB-registered employers can claim grants toward training and assessment costs.

MCS certification body fees add to this. Annual fees vary between bodies, but budget around £500 to £1,000 per year for a small sole trader or limited company.

The Low Carbon Heating Technician apprenticeship

If you're hiring a new member of staff, the Level 3 Low Carbon Heating Technician apprenticeship is worth knowing about. It covers heat pump installation alongside other low-carbon heating technologies and has been expanding to more training providers since 2025. It's a longer route than a short course but produces more thoroughly trained engineers.

What jobs will you be able to do?

With BPEC or City and Guilds and MCS certification, you can install:

• Air source heat pumps (air to water, the most common domestic type)
• Ground source heat pumps
• Air to air heat pumps (£2,500 BUS grant applies here)

Ground source work also requires refrigerant handling qualifications (F-Gas) if you're working with refrigerant circuits. Check the specific units covered by your chosen qualification before booking — some BPEC routes cover non-refrigerant circuits only and you'll need additional F-Gas certification for ground source.

Getting work as a certified heat pump installer

Once you have MCS certification, register on the MCS installer directory — homeowners using the BUS scheme search this directory when looking for installers. You can also register with comparison platforms like Heatable, Heat Geek, or Checkatrade.

Marketing yourself well matters here. Most homeowners don't understand the difference between Air to Water and Air to Air, or what a heat loss calculation involves. Being able to explain it clearly in a quote gives you an edge over less communicative competitors.

When you're quoting jobs, getting the paperwork right is important. A clear, itemised quote protects you if the spec changes after you start. Use a quote generator to produce professional quotes quickly, and make sure you're issuing proper invoices that match your MCS certificates so everything ties together for Ofgem claims.

Cash flow is also worth thinking about. BUS grants are paid to you after the job, which means you're funding materials and labour upfront. On a £12,000 installation that's a significant float. Keeping track of what's owed and when using an invoice generator helps you stay on top of outstanding payments and plan your workload accordingly.

Useful resources

• Ofgem: Boiler Upgrade Scheme
• BPEC: Heat Pump Systems qualification details
• MCS: Find a training course
• Energy Saving Trust: Training providers toolkit
• CITB: Training grants for employers

Frequently asked questions

Do I need MCS to install heat pumps in the UK?

You don't legally need MCS to install a heat pump. But without it, the homeowner cannot claim the Boiler Upgrade Scheme grant, and the installation cannot be formally certified. In practice, almost all domestic heat pump work now requires MCS, so it's effectively essential if you want to work in this market.

Can a plumber with no gas experience do heat pump training?

Yes, though you'll need to check your existing certificates cover the pre-requisites. You'll need a current unvented cylinder qualification, evidence of water regulations training, and either three years' experience on wet heating systems or a recognised heating qualification. A plumber with solid central heating experience should have most of this covered.

How much can I earn as a heat pump installer?

Day rates for qualified heat pump installers typically run from £250 to £400 in 2026, depending on location and experience. On a full installation contract basis, heat pump jobs commonly sit between £8,000 and £15,000, from which your material and sub-contractor costs need to be deducted. A busy MCS-certified sole trader can turn over £80,000 to £150,000 per year depending on how much of the design and commissioning work they handle themselves.

Does the BUS grant run out?

The Boiler Upgrade Scheme operates on an annual budget. The 2025/26 budget is £295 million. If that budget is exhausted before the year end, new vouchers cannot be issued until the next financial year. In practice, demand has not yet outstripped the budget in previous years, but this could change as take-up increases.

What is the difference between BPEC and City and Guilds for heat pumps?

Both are Level 3 qualifications recognised for MCS purposes. The main difference is the awarding body and which training centres deliver them. Some providers run BPEC, others run City and Guilds. Choose based on which training centre is most convenient and has the best reviews, rather than the qualification brand itself.