Top 7 Heat Pump Installers in the UK: How to Choose & Questions to Ask
If you’re planning to install a heat pump in the UK, choosing the right installer is one of the most important steps for efficiency, safety, and long-term savings. With government grants and evolving technologies, picking a trusted and certified professional ensures your system runs smoothly for years.
This guide highlights the top 7 heat pump installers in the UK and provides actionable tips on how to select the right installer, plus key questions to ask before committing.
🔝 Top 7 Heat Pump Installers in the UK (2025)
| Rank | Installer | Coverage | Key Strengths | Warranty | Ideal For |
|---|---|---|---|---|---|
| 1 | Octopus Energy | England and Wales | Competitive pricing, reliable air source heat pumps | 8 years | Budget-conscious homeowners |
| 2 | Aira Home | England and Scotland | Long-term reliability, extended warranties | 15 years | Homeowners prioritizing longevity |
| 3 | Warma UK | Mainland Britain | Expertise in Boiler Upgrade Scheme grants | N/A | Homeowners seeking grant support |
| 4 | Puraflow Renewables | UK-wide | Personalized installations, excellent service | N/A | Tailored solutions with strong customer care |
| 5 | Renewafuel | Mainland Britain | Nationwide coverage, experienced technicians | 10 years | Homeowners wanting guaranteed service |
| 6 | Adlar Castra | London and South East | Specialization in hard water areas | 2–5 years | Homes with challenging water conditions |
| 7 | ELT Heat | London and South East | Innovative solutions, early market entry | 5–7 years | Early adopters of cutting-edge technology |
🛠 How to Choose the Right Installer
Selecting a heat pump installer is more than price comparison. Follow these steps to make an informed choice:
- Understand Your Needs – Determine whether an air source or ground source heat pump is best for your home size and energy requirements.
- Verify Credentials – Always check for MCS certification to qualify for government grants and meet quality standards.
- Request Multiple Quotes – Obtain at least three detailed quotes to compare costs, materials, and services.
- Check Reputation – Look for reviews, testimonials, and case studies to ensure reliability.
- Review Warranty and Aftercare – Longer warranties and responsive aftercare indicate a reputable installer.
Transition tip: Use installers who actively participate in government schemes to maximize financial benefits.
❓Questions to Ask Before Hiring
Before committing, ask potential installers these essential questions:
- What is your MCS certification number?
- Can you provide references or case studies of similar installations?
- What does your warranty cover and for how long?
- Do you offer ongoing maintenance services?
- How do you calculate the appropriate heat pump size for my home?
These questions help ensure transparency, quality, and peace of mind.

💷 Financial Considerations
The UK government’s Boiler Upgrade Scheme offers grants of up to £7,500 for eligible homeowners. Not all installers can process these grants, so confirm with your provider whether they handle the application. Pairing grants with energy-efficient choices can significantly reduce upfront costs while boosting long-term savings.
🏡 Local Installer Options
For homeowners in Carlisle or regional areas:
- Heat Geek – Connects you to trusted certified installers across the UK.
- PrimaryPro – Features IMS Heat Pumps and provides experience in both air and ground source installations.
Both platforms simplify the process of finding reliable, local professionals.
✅ Key Takeaways
- Take your time – Heat pump installations are long-term investments.
- Consider maintenance – Understand future upkeep costs and requirements.
- Stay informed – Monitor updates to grants, regulations, and incentives.
- Prioritize certified installers – MCS certification ensures quality and access to grants.
By following these guidelines and selecting a reputable installer, your heat pump installation can be efficient, reliable, and cost-effective for years to come.
Read : The Complete UK Heat Pump Guide 2025 — Grants, Costs Savings


















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