Gas boilers continue to dominate the UK heating market in Q1 2026, with over 80% of UK households using gas for central heating some replacement demand is unavoidable. But sales of domestic gas boilers and hot water cylinders in Q1 were down from Q1 2025.

Boiler Upgrade Scheme (BUS) applications were 22% up compared with December 2025 but given the Iran conflict and its impact on cost of energy, it remains to be seen if applications convert to installations. As the primary low‑carbon technology, heat pumps represent most BUS applications.

Consumer intent is growing, but the ability to deliver is restricted by installer availability, confidence, and the practical complexity of low‑temperature system design. Those constraints will only be resolved through simpler propositions, better training and closer collaboration across the supply chain.

The Future Homes Standard is already shaping developer behaviour, with fossil fuel systems increasingly designed out at concept stage. More materially, the transition into Clean Heat Market Mechanism Year 2 marks a significant escalation. From April 2026, manufacturer obligations increase from 6% to 8% of boiler sales, accelerating investment in heat pump portfolios, installer training and commercial partnerships.

Disruption to global energy flows in Q1, including closure of the Strait of Hormuz, drove sharp increases in kerosene and heating oil prices (up to x3), disproportionately impacting off‑grid households and further strengthening the long‑term case for electrification. Oil boiler users have had to accept significant and rapid price increases in the cost of oil. These, almost always off-grid properties, should be prime targets to move to heat pumps, but the problem of skilled installers in often remote locations is amplified.

The UK housing stock is old and inefficient, and meeting net zero ambitions alongside housing delivery targets cannot be achieved through incremental upgrades. Success will depend on collaboration rather than substitution, with developers and landlords increasingly seeking partners who can co‑engineer integrated, low‑risk solutions supported by performance assurance, simplified installation and transparent lifecycle data.

The UK heating transition is progressing pragmatically, with momentum increasingly shaped by regulation, investment and energy security considerations rather than short‑term market cycles. The additional factor of climate change, resulting in prolonged periods of seasonally abnormal milder spells, also has an inevitable impact on the overall market.