HOMEOWNER GUIDE · REVIEWED 9 OCTOBER 2026
How to compare installer quotes
Compare the same scope before comparing the final figure. A clear quote makes the next decision much easier.
Confirm the equipment and work
List the product models, capacity, installation method, access, scaffolding, electrical work, commissioning, waste removal and any exclusions. Ask who is responsible for each element.
Check the business and protections
Check the relevant current certification directly, ask for insurance evidence and confirm which warranties or insurance-backed guarantees actually apply to your installation. A paid directory position is separate from those checks.
Compare the outcome and aftercare
Request the design assumptions, completion schedule, payment milestones, workmanship terms, product warranties, handover documents and aftercare contact. Keep the agreed scope and all changes in writing.
Sources
Find installers by area
Loft insulation installers
Solar panel installers
Battery storage installers
Heat pump installers
EV charger installers
More guides
Boiler Upgrade Scheme: the £7,500 heat pump grant