Heatline Boiler Review

Heatline, a UK boiler manufacturer established over 50 years ago, has built a reputation for delivering affordable, reliable heating solutions. Since its acquisition by the Vaillant Group, Europe’s second-largest heating company, Heatline has focused on high-efficiency condensing combi boilers tailored for budget-conscious UK homeowners. In 2025, Heatline’s primary offering, the Capriz2 range, is noted for its simplicity, compact design, and value-for-money pricing, though its limited model range and short warranty make it a niche choice. Heatline combi boilers provide instant hot water and central heating without requiring storage tanks, ideal for flats or small homes. The Capriz2, available in 24kW and 28kW outputs, achieves A-rated efficiency of 89.3% (SEDBUK 2009), with flow rates of ~9.9–11.4 liters per minute, suitable for 1 bathroom and 10–15 radiators. Featuring automotive-grade aluminium heat exchangers and Grundfos pumps, they ensure durability and quiet operation. Compact (740mm x 418mm x 300mm) and lightweight (33.3kg), they fit kitchen cupboards, with user-friendly analogue timers and digital displays. Installer-friendly with flexible flue options, they offer a 2-year parts and labour warranty, though this is shorter than competitors, raising concerns about long-term costs. Priced from £430–£795 (installation £1,400–£1,800), they’re economical, but Trustpilot reviews (3.8/5 from 500) cite issues like low flow rates and after-sales delays. Best for small properties, larger homes may need alternatives like Vokèra’s Easi-Heat, as Heatline has phased out older models like Capriz Plus. With ISO14001 environmental certification and low-NOx emissions, Heatline remains a practical, eco-conscious option for 2025’s budget market.