Premium — Vaillant ecoTEC plus 826 (26 kW)

From £2,650–£2,950 (inc. standard kit)
Why pick it: Vaillant’s flagship mid-range combi with premium build, stainless-steel heat exchanger, brass hydraulics, ultra-quiet operation, and the intuitive semi-touch interface. Supplied with the Vaillant system filter as part of our package.
Warranty: 10-year manufacturer warranty (registration + annual service).
Good for: Buyers who want the best blend of refinement, quietness, and longevity.

Option: System-to-combi conversion (remove cylinder/tanks, new pipe runs) typically £3,900–£5,200 depending on scope.