Budget — Main Eco Compact 25 (25 kW)

From £1,750–£2,150 (inc. standard kit)
Why pick it: Best bang-for-buck. Robust, compact combi with a stainless-steel heat exchanger and brass internals for dependable, easy-service ownership at a keen price point.
Warranty: 5-year manufacturer warranty (registration + annual service).
Good for: Landlords, first-time buyers, or anyone wanting a tough, affordable workhorse.

Option: System-to-combi conversion typically £2,500–£3,200.