Alpha Boiler Review

Part of the Italian-owned Immergas Group since 2002, Alpha operates from Kent and leverages over 50 years of expertise to produce efficient, reliable boilers tailored for modern UK homes. In 2025, Alpha’s combi boilers, including the E-Tec, E-Tec Plus, Evoke, and E-Tec NX, are celebrated for their compact design, competitive pricing, and robust performance, making them a go-to for budget-conscious homeowners. Alpha combi boilers provide instant hot water and central heating from a single unit, eliminating the need for storage tanks, ideal for small to medium-sized homes like flats or terraces. Models like the E-Tec NX (28kW–38kW) offer A-rated efficiency of ~93%, with flow rates of ~10–15 liters per minute, suitable for 1–2 bathrooms. Featuring stainless steel heat exchangers, they ensure durability and low emissions. Compact (some as small as 712mm x 440mm x 255mm) and wall-mounted, they fit kitchen cupboards, with sleek designs enhancing aesthetics. Smart controls, like OpenTherm compatibility and Alpha’s Climatic remote system, optimize efficiency, while features like frost protection and Quiet Mark certification add practicality. Installer-friendly with push-fit flues, they offer 5–10 year warranties, extendable to 13 years via accredited installers. Priced from £625–£1,795 (excluding installation), they’re value-driven, though some Trustpilot reviews (4.7/5 from 6,000) note occasional after-sales delays. Best for homes with moderate hot water needs, larger properties may require Alpha’s system boilers. With Good Homes Magazine approval (2021) and 20% hydrogen-readiness, Alpha remains a compelling, eco-friendly choice.