Cost factors to compare
The quote should make clear whether it includes a cylinder, radiator upgrades, electrical work, controls, scaffolding, condensate management, commissioning, and aftercare.
In colder regions, design temperature and defrost performance may matter more. In milder regions, tariff and hot water design may drive the economics.
Accuracy note
Energy prices, grants, and installation costs vary by country and change frequently. Use this page for planning only and check current official sources before making decisions.