Solutions · Heating

£11,000–£14,000 installed (before £7,500 BUS grant) · Vaillant's R290 monobloc; the unit most MCS installers will quote first for a well-insulated 3-bed.

£10,500–£13,500 installed (before grant) · The most-installed heat pump in the UK.

£11,500–£14,500 installed (before grant) · Daikin's R290 high-temperature unit; the credible answer when you need 65°C+ flow without dropping the radiators.

£9,000–£12,000 installed (before grant) · Samsung's R290 monobloc; significantly cheaper than the Vaillant/Mitsubishi tier, with strong measured efficiency.

From £7,500 after grant, fixed-price install · Octopus's own-brand R290 monobloc paired with a single-vendor install, smart Cosy tariff and one warranty.

£2,400 to £2,900 installed · Worcester Bosch's accessibly-priced combi for a typical UK 3-bed.

£2,600 to £3,200 installed · Vaillant's mid-range combi pairs cleanly with weather compensation and is widely fitted by installers who also work on the aroTHERM heat-pump range.

£1,900 to £2,400 installed · Built in Hull, sensibly priced and supported by a deep British installer base.

£2,500 to £3,100 installed · Viessmann's mass-market combi brings the brand's quiet condensing operation down to a price tier where it competes with Worcester and Vaillant.

£2,000 to £2,500 installed · Baxi's mid-market combi is the boiler your local gas engineer is most likely to have on the van when a Tuesday breakdown becomes a Wednesday install.