Heat Pump + Moving House Considerations UK 2026

The heat pump is a permanent fixture of the property + transfers with the sale, similar to:

• A gas boiler (you don't take it with you)
• An immersion-tank hot water cylinder
• A fitted electric oven
• Built-in radiators

What this means practically:

• The outdoor unit + indoor cylinder + controller stay at the property.
• You don't get any refund of your install cost on sale - the value is captured in the house sale price (typically 1-3% uplift per our house value guide).
• The new owner inherits the warranty + service obligations.
• You should provide the new owner with: MCS commissioning certificate, manufacturer warranty paperwork, annual service records, controller manuals.

Things to ask the seller before completing:

• MCS commissioning certificate + age of the install. Heat pumps within manufacturer warranty (typically 5-10 years from install date) carry significant residual value.
• Annual service records for each year since install. Missing services may have invalidated the manufacturer warranty - investigate before accepting.
• BUS grant status. The property received BUS if installed since 2022; this means a 7-year exclusion from re-applying. If the heat pump fails within that 7-year window, the new install would not qualify for BUS.
• Controller + manufacturer-app access. The seller should hand over login credentials for myVAILLANT / MELCloud / ViCare / Octopus Cosy etc. so you can update to your details.

Solicitor-assistance: include heat pump documentation as part of the standard fixtures-and-fittings schedule (TA10 form). Missing documentation should reduce your offer.

If you move to a property without a heat pump + want to install one:

• BUS grant applies as standard: you can claim £7,500 for the new property as long as it hasn't received BUS in the last 7 years.
• Property address is what counts: if a previous owner of the new property claimed BUS within 7 years, you cannot claim again at that address. Check Land Registry records or ask the previous owner during sale.
• Install process is the standard 6-12 week timeline covered in our retrofit timeline guide.

If your new property has higher heat demand than your previous one (e.g. moving from 3-bed semi to 5-bed detached), the heat pump install cost will be higher. Plan around the new property's specific MCS heat-loss survey rather than assuming previous costs translate.

Occasionally UK property listings advertise 'heat pump install planned' or 'BUS-grant approved' as a buyer-attractor:

• 'Planned but not installed': the install hasn't happened. If you buy + the seller has a signed installer contract, the install can proceed after completion. Check who's named on the contract + whether the BUS grant transfers to you as the new owner (typically requires re-application).
• 'BUS-grant approved': the BUS application was approved but install hasn't proceeded. Approvals are typically tied to the specific applicant + property - confirm with the installer whether your buying the property allows the existing approval to roll forward, or whether you need to re-apply.
• 'Install in progress': if you're buying mid-install, ensure the seller's installer contract continues post-completion + that warranty registration uses your details.

Get the install status confirmed in writing as part of the conveyancing process. Verbal assurances from the estate agent are not enforceable.

1. Missing MCS commissioning certificate. Without this, the buyer can't claim manufacturer warranty + may demand price reduction. Locate yours before listing the property.
2. Missed annual services. Most manufacturer warranties require annual service. Gaps may have invalidated warranty - investigate + document before sale.
3. Smart-home app / controller credentials. Hand over login details for manufacturer app + any smart-home integration during completion. Don't leave the buyer locked out of their own system.
4. BUS 7-year exclusion misunderstanding. Some buyers don't realise they can't re-apply for BUS at the property within 7 years. Inform them at sale to avoid post-completion complaint.
5. Cylinder thermostat + legionella cycle confusion. Heat pump cylinder thermostats work differently from gas-system controls. Brief the buyer on the legionella weekly disinfection cycle to avoid unnecessary engineer call-out.