Heat pumps are one of the biggest shifts in home heating in decades — but choosing the wrong installer can cost you thousands in inefficiency, poor performance, and ongoing issues.
You’ve probably heard the claims: lower energy bills, no gas, future-proof heating. The reality? Those benefits only happen when the system is designed and installed correctly.
When it comes to air source heat pump installation, this is where most homeowners go wrong.
We’ve reviewed and ranked seven of Scotland’s leading heat pump installers based on:
- Expertise in retrofits, hybrids, and renewable integration
- Verified customer reviews (Trustpilot & Google)
- Industry accreditations (MCS, HIES, RECC, TrustMark)
- Real-world experience with Scottish properties
Scotland’s Top-Rated Heat Pump Installers
| Rank | Company | Location | Reviews | Trustpilot Score | Best For |
| 1 | The Edinburgh Boiler Company | Dalkeith, Edinburgh | 3,000+ (Trustpilot & Google) | 4.9 stars | Heat pumps, hybrids, boilers, solar |
| 2 | The McInnes Group | Inverness/Highlands | Verified (Energy Saving Trust) | Not listed | Highland renewable projects |
| 3 | Aventus Eco | Central Scotland | Google verified | Highly Commended Award | Heat pump + solar specialists |
| 4 | LW Haddow Plumbing & Heating | Glasgow | 719 Trustpilot | 5 stars | Glasgow heating + renewables |
| 5 | ScottishPower Heat Pumps | Scotland-wide | 143,000+ (energy supply) | 4.3 stars | Utility-backed warranties |
| 6 | Smart Group Scotland | Glasgow/Edinburgh | Which? Trusted Trader | Not listed | Central belt renewables |
| 7 | Eco Gen Contractors | Scotland | Home Energy Scotland approved | Not listed | Grant-assisted renewable installs |
1. The Edinburgh Boiler Company — Scotland’s Number One Heat Pump Installer
Dalkeith, Edinburgh | Scotland-wide | Domestic and Commercial
They’ve completed hundreds of heat pump installations across Scottish homes — from Edinburgh tenements to rural Highland properties — each requiring precise heat loss calculations, proper refrigerant handling, hydraulic balancing, and commissioning to MCS standards.
Unlike simple boiler swaps, heat pumps demand expert pipework design (low flow temperatures, correct pipe sizing), electrical upgrades for smart controls, and weather compensation setup optimised for Scotland’s variable climate.
They specialise in seamless boiler-to-heat-pump upgrades (retrofitting into existing heating systems) and hybrid systems where heat pumps handle 80-90% of annual load with gas boiler backup for extreme cold snaps — delivering lowest running costs without full gas elimination.
Outstanding 4.9 stars from 3,000+ verified reviews
Scotland’s highest-rated heat pump specialists. Thousands praise surveyors who explain exactly why their home needs a 7kW vs 11kW system, clean installs with minimal disruption, and aftercare engineers who return for seasonal commissioning tweaks. Homeowners consistently highlight honest advice about whether full electrification, hybrids, or solar-enhanced heat pumps deliver the best ROI.
Accreditations
- MCS Certified — qualifies you for £7,500 Home Energy Scotland Grant
- HIES Accredited (Home Insulation & Energy Systems Quality Assured Contractors Scheme) — independently vetted with strict consumer protection: clear contracts, deposit protection, workmanship guarantees, independent dispute resolution
- Which? Trusted Trader — independently assessed
- TrustMark Registered — UK Government quality scheme
- RECC Accredited — ethical sales/installation code
- EPVS Certified — savings figures independently validated
- ISO 9001 Accredited (Quality Management) — recognised system ensuring consistent service, continuous improvement, customer satisfaction focus
- ISO 14001 Accredited (Environmental Management) — structured processes to reduce environmental impact and improve sustainability
- ISO 45001 Accredited (Health & Safety Management) — robust systems protecting employees, customers, public with ongoing safety improvements
- Octopus Energy Trusted Partner — smart tariff optimisation for heat pumps + hybrids + solar
- Scottish Procurement Framework Approved — vetted for public sector renewable/boiler projects
- Ideal Heating Max Accredited — manufacturer-approved heat pumps + boilers
- Worcester Bosch Accredited — boilers + heat pumps
- Gas Safe Registered
Won Building Services Contractor of the Year 2024 (H&V News Awards) — national recognition for heat pump, boiler, and renewable excellence.
Hybrid systems: Experts in heat pump + gas boiler hybrids — perfect for homes where full electrification isn’t practical yet. Keeps your gas boiler as backup while heat pump handles most heating/cold weather loads.
Commercial renewables: Scottish Procurement Framework approval proves capability for schools, NHS, council heat pump/hybrid/boiler projects.
Bottom line: Most accredited. Most reviewed. Most awarded. Heat pumps, hybrids, boilers — they do it all better than anyone.
Website: theedinburghboilercompany.com
2. The McInnes Group — Inverness and Highlands
Inverness | Highlands
Multi-trade contractor experienced in Highlands renewables and heating. Energy Saving Trust verified and TrustMark registered, they handle heat pumps, boiler replacements, and electrical upgrades — ideal for complex remote installations where coordinating trades is challenging.
Highlands expertise covers non-standard layouts, single-phase electrical limits, and long supply chains. Strong for crofthouse heat pump retrofits and hybrid systems in grid-challenged areas.
Accreditations
- MCS Certified — heat pumps + renewables
- TrustMark Registered — government quality scheme
- Energy Saving Trust Recommended
- Gas Safe Registered — boiler work
Worth knowing: No standalone Trustpilot found. Ask for heat pump + boiler references.
Verdict: Capable Highlands contractor for integrated heating solutions.
3. Aventus Eco — Central Scotland
Central Scotland
Heat pump specialists designing integrated systems for Scottish homes. Highly Commended, Scottish Energy Efficiency Awards 2025 for air source heat pump project. Strong Google reviews for engineer communication.
Accreditations
- MCS Certified — air source heat pumps
- RECC Accredited — consumer protection
- Home Energy Scotland Grant approved
Worth knowing: Small Trustpilot presence. Check Google reviews.
Verdict: Award-winning heat pump specialists.
Website: aventuseco.com
4. LW Haddow Plumbing & Heating — Glasgow
Glasgow | West Scotland
Family firm established in 1982 with 5 stars from 719 Trustpilot reviews — exceptional reputation built on decades of boiler expertise now expanding into heat pump installations. Customers praise their deep Glasgow knowledge, fast response times, and ability to integrate heat pumps into existing heating systems without major disruption.
Accreditations
- MCS Certified — air source heat pumps
- Gas Safe Registered — boiler + heating expertise
- HIES Member — deposit protection
- RECC Accredited
Worth knowing: Strongest coverage Glasgow/West Scotland.
Verdict: Outstanding local choice with 40+ years heating experience.
Website: lwhaddow.co.uk
5. ScottishPower Heat Pumps — Scotland-wide
Nationwide
Major energy supplier ScottishPower with dedicated heat pump installation arm. 143,000+ Trustpilot reviews at 4.3 stars (primarily energy supply).
Benefits from manufacturer partnerships offering extended warranties (15-25 years), nationwide service network, and established billing integration — reassuring for homeowners wanting long-term support rather than a small local firm.
Accreditations
- MCS Certified — national network
- TrustMark Registered
- 25-year system warranties
Worth knowing: Large company processes mean less personal service.
Verdict: Solid utility option for warranty-focused homeowners.
6. Smart Group Scotland — Central Belt
Glasgow/Edinburgh/Stirling
Which? Trusted Trader verified covering heat pumps across Glasgow, Edinburgh, and Stirling. Central Belt focus with strong coverage for homeowners in urban and suburban properties where access and coordination matter most. Customers value their independent consumer endorsement and ability to handle complete heating system upgrades.
Accreditations
- MCS Certified — air source heat pumps
- Which? Trusted Trader
- RECC Accredited
Worth knowing: Limited public reviews. Ask for references.
Verdict: Which? approved Central Belt installer.
Website: smartgroup.uk.com
7. Eco Gen Contractors — Scotland
Scotland-wide
Home Energy Scotland approved specialists in grant-assisted heat pump installations. They handle the full grant application process, paperwork compliance, and eligibility assessments — making them ideal for homeowners maximising the £7,500 Home Energy Scotland Grant and 0% interest loan combination without navigating complex bureaucracy themselves.
Accreditations
- MCS Certified — grant-eligible installs
- Home Energy Scotland Approved
- RECC Accredited
Worth knowing: Limited review data. Strong grant expertise.
Verdict: Practical choice for grant-funded heat pumps.
Before You Sign — Check These 5 Things
- MCS Certified? — Essential for £7,500 Home Energy Scotland Grant
- RECC/HIES? — Protects your deposit
- EPVS Certified? — Validates running cost savings
- Hybrid system experience? — Best for transitional homes
- Scottish climate sizing? — Must be properly calculated
Get Your Free Heat Pump Quote
Heat pumps, hybrid systems, and boilers make genuine financial sense in Scotland when properly designed. The Edinburgh Boiler Company leads with 3,000+ five-star reviews, unmatched accreditations (HIES, ISO 9001/14001/45001), national awards, and proven expertise across heat pumps, hybrids, boilers, solar, and batteries.
Every quote uses your actual heat loss figures. EPVS certified. Domestic homes or commercial buildings — we’ve delivered all across Scotland.
Free quotes. No obligation. Book in minutes.
