{"id":40,"date":"2026-06-25T20:16:01","date_gmt":"2026-06-25T20:16:01","guid":{"rendered":"https:\/\/renewmylet.co.uk\/blog\/?p=40"},"modified":"2026-06-25T20:33:25","modified_gmt":"2026-06-25T20:33:25","slug":"heat-pump-or-gas","status":"publish","type":"post","link":"https:\/\/renewmylet.co.uk\/blog\/heat-pump-or-gas\/","title":{"rendered":"Heat Pump or Gas Boiler?"},"content":{"rendered":"
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QUICK ANSWER<\/p>\n

A property heated solely by a gas boiler is generally capped at EPC band D, no matter how efficient the boiler is. Reaching band C usually means either switching the heating system (commonly to a heat pump) or qualifying via a “smart readiness” route involving measures like solar panels and a smart meter.<\/p>\n<\/div>\n

This is the question that catches the most landlords off guard: “Can’t I just get a more efficient gas boiler?” The honest answer is no \u2014 and understanding why changes how you should be thinking about this.<\/p>\n

Why a gas boiler has a ceiling<\/h2>\n

The 2030 rules assess properties against more than one measure \u2014 broadly, how well the building itself retains heat, and separately, how the heating system performs. Under that second measure, a fossil-fuel heating system \u2014 gas, oil, or LPG \u2014 is capped at band D, regardless of how new or efficient the boiler is. A brand-new, top-of-the-range condensing gas boiler doesn’t change this; the limit is about the fuel type and system, not the specific model.<\/p>\n

This means insulation alone, or a boiler swap alone, won’t get a gas-heated property to band C. Something about the heating system itself has to change.<\/p>\n

The main route: heat pumps<\/h2>\n

For most properties, this means an air source heat pump (the most common type) or, less commonly, a ground source heat pump. A few things worth knowing before assuming this is straightforward:<\/p>\n