The Independent Heat Pump Buyer's Checklist
Buying a heat pump should not feel overwhelming. But with MCS certification, BUS grants, heat loss calculations, flow temperatures, and warranty conditions to navigate, it can feel like a lot. This independent checklist puts everything in one place — organised by stage, with clear yes/no checkpoints. Print it, take it to your site surveys, and use it to compare quotes. It is completely brand-neutral and based on MCS standards, consumer protection law, and the hard-won experience of thousands of UK homeowners.
Ready to start your buying journey?
Request a heat pump quoteAnswer a few questions about your home and request a quote.
Stage 1: Before You Contact Installers
Preparation saves time and helps you ask better questions.
| Check | Item | Why It Matters |
|---|---|---|
| ☐ | Know your current heating system and fuel type | Determines grant eligibility and savings calculation |
| ☐ | Find your current annual heating spend | Baseline for savings comparison |
| ☐ | Check your EPC rating (if available) | Indicates insulation level and heat pump suitability |
| ☐ | Know your property type, age, and construction | Affects heat loss and system sizing |
| ☐ | Check if you are in a conservation area or have a listed building | May need planning permission |
| ☐ | Use our suitability checker | Quick assessment of your property's readiness |
| ☐ | Use our cost calculator | Independent benchmark for system size and cost |
| ☐ | Read our installation guide | Understand the process before engaging installers |
Stage 2: Choosing Installers
| Check | Item | Why It Matters |
|---|---|---|
| ☐ | Verify MCS certification at mcscertified.com | Required for BUS grant; provides consumer protection |
| ☐ | Get at least 3 quotes from different installers | Enables meaningful comparison |
| ☐ | Check online reviews (Google, Trustpilot) | Real customer feedback on quality |
| ☐ | Ask about heat pump installation experience | Experience level affects quality |
| ☐ | Ask about brand partnerships (e.g., Vaillant Advance) | Indicates additional training |
| ☐ | Request references from previous customers | Direct feedback from real installations |
Stage 3: During the Site Survey
| Check | Item | Why It Matters |
|---|---|---|
| ☐ | Installer visits your property in person | Remote-only quotes are a red flag |
| ☐ | Survey takes 60-90 minutes | Shorter suggests inadequate assessment |
| ☐ | Installer measures room dimensions | Needed for heat loss calculation |
| ☐ | Installer checks wall construction and insulation | Affects heat loss and system sizing |
| ☐ | Installer inspects existing radiators | Determines if upgrades needed |
| ☐ | Installer checks electrical supply capacity | May need upgrade for heat pump |
| ☐ | Installer identifies outdoor unit location | Affects noise, performance, aesthetics |
| ☐ | Installer discusses your heating habits | Informs system design |
| ☐ | Installer discusses hot water needs | Determines cylinder size |
| ☐ | Installer asks about future plans (extension, etc.) | May affect system sizing |
Stage 4: Evaluating Quotes
| Check | Item | Why It Matters |
|---|---|---|
| ☐ | Room-by-room heat loss calculation included | Mandatory under MCS — foundation of the design |
| ☐ | Heat pump brand and specific model stated | Enables independent research |
| ☐ | System size (kW) matches heat loss | Prevents over/undersizing |
| ☐ | Hot water cylinder brand and size stated | Must be adequate for household |
| ☐ | Radiator upgrades specified (rooms and sizes) | Critical for low-temperature operation |
| ☐ | Design flow temperature stated | Lower = more efficient |
| ☐ | Predicted COP/SCOP stated | Indicates expected efficiency |
| ☐ | Predicted running costs stated | Basis for savings comparison |
| ☐ | BUS grant deducted from total price | Should show the grant deduction (£7,500, or £9,000 for eligible oil/LPG homes off the gas grid until 31 March 2027) |
| ☐ | Commissioning process described | Ensures proper system setup |
| ☐ | Warranty terms detailed (length, parts/labour) | Know what you are getting |
| ☐ | Installation timeline specified | Plan your schedule |
| ☐ | All costs itemised (no hidden extras) | Prevents surprise charges |
| ☐ | Compare all quotes using the same criteria | Fair like-for-like comparison |
Check if a heat pump suits your home
Request a heat pump quoteAnswer a few questions about your home and request a quote.
Stage 5: Before Signing the Contract
| Check | Item | Why It Matters |
|---|---|---|
| ☐ | Written contract provided (not just a verbal agreement) | Legal protection |
| ☐ | 14-day cooling-off period confirmed in writing | Your legal right for home-signed contracts |
| ☐ | Warranty terms read and understood | Know conditions, exclusions, servicing requirements |
| ☐ | Payment terms reasonable (max 25% deposit) | Protects your money |
| ☐ | Payment method: credit card for Section 75 protection | Joint liability with card company |
| ☐ | Planning permission obtained (if required) | Conservation area or listed building |
| ☐ | Satisfied with answers to all your questions | Never sign if uncomfortable |
Stage 6: During Installation
| Check | Item | Why It Matters |
|---|---|---|
| ☐ | Installed brand/model matches the quote | Must be as specified |
| ☐ | Outdoor unit positioned as agreed | Affects noise and performance |
| ☐ | Pipework routes are neat and well-insulated | Quality and efficiency indicator |
| ☐ | Radiator upgrades completed as specified | Must match the design |
| ☐ | Cylinder installed and connected | Hot water system functional |
| ☐ | Electrical work completed to standard | Safety critical |
| ☐ | Any issues raised with installer immediately | Easier to fix during installation |
Stage 7: Commissioning and Handover
| Check | Item | Why It Matters |
|---|---|---|
| ☐ | Full commissioning performed (not just switched on) | Critical for efficiency — scenario 3 in our installations-gone-wrong guide shows why |
| ☐ | Weather compensation curve set for your property | Optimises efficiency automatically |
| ☐ | Flow temperature set correctly (not left at factory default) | Too high = wasted energy |
| ☐ | Hot water schedule configured | Efficient hot water production |
| ☐ | Controls demonstrated to you in person | You need to know how to operate it |
| ☐ | Questions answered to your satisfaction | You will be living with this system |
Stage 8: After Installation
| Check | Item | Document Received? |
|---|---|---|
| ☐ | MCS installation certificate | Essential for grant and warranty |
| ☐ | Commissioning certificate with settings | Proof of proper setup |
| ☐ | Manufacturer warranty documentation | Your warranty proof |
| ☐ | Warranty registered with manufacturer | Some brands require registration |
| ☐ | User manual for your specific model | Operating instructions |
| ☐ | Maintenance schedule | Know when servicing is due |
| ☐ | Handover checklist signed by both parties | Confirms demonstration completed |
| ☐ | BUS grant confirmation from Ofgem | Confirms grant applied |
| ☐ | Electrical installation certificate | Part P compliance |
| ☐ | Annual service booked | Maintains warranty validity |
| ☐ | All documents stored safely | Needed for claims, sales, servicing |
Frequently Asked Questions
Can I print this checklist?
Yes. Use Ctrl+P (Windows) or Cmd+P (Mac) to print. The page is designed to be printer-friendly.
How long does the buying process take?
8-16 weeks from first enquiry to completed installation. Add 8-12 weeks if planning permission is needed.
What is the single most important check?
Verifying MCS certification at mcscertified.com. Everything else — grant, protection, standards — depends on this.
Do I need to understand all the technical details?
No. A good installer explains everything. But understanding the basics helps you ask the right questions. This checklist gives you the questions; the installer provides the answers.
What if I forget something?
Most items can be addressed after installation. The pre-contract checks (MCS verification, heat loss calculation, detailed quote) are most critical — harder to fix after signing.
Is this checklist biased?
No. It is completely independent, brand-neutral, and based on MCS standards, consumer law, and industry best practice.
Armed with the checklist? Get started
Request a heat pump quoteAnswer a few questions about your home and request a quote.
Your Complete Buying Toolkit
This checklist is part of a comprehensive buyer's toolkit. Combine it with our cost calculator, suitability checker, red flags guide, and consumer rights guide for complete protection. The BUS grant of £7,500 makes heat pumps affordable, and adding solar panels can maximise your energy savings further. Go in informed, and you will come out with a heating system that serves you brilliantly for 20+ years.