Heating Options for London Flats with No Gas Connection: What Works in 2026

Why Many London Flats Have No Gas

A significant number of London flats — particularly those in converted Victorian and Edwardian houses, newer purpose-built developments, and high-rise blocks — have no individual gas supply. In converted buildings, the decision to install or omit gas pipework was often made at the time of conversion, and retrofitting an individual gas supply to a flat within a large converted house or purpose-built block involves significant structural and regulatory complexity. In high-rise buildings above a certain height, gas installation is prohibited or restricted under building regulations on safety grounds.

For owners and tenants in these properties, the question of how to heat the flat and provide hot water without gas is both practical and, increasingly, economically significant as energy prices fluctuate. The options range from electric resistance heating to heat pumps, infrared panels, and district or communal heating systems.

Electric Storage Heaters

Electric storage heaters are the traditional solution in London flats without gas. They charge overnight on Economy 7 or Economy 10 tariffs, when electricity is cheaper, storing heat in a ceramic or clay core and releasing it during the day. Modern high heat retention storage heaters are significantly more efficient than older models, retaining heat more effectively and releasing it in a more controlled way in response to room temperature.

The main limitation of storage heaters is that they require a time-of-use electricity tariff to be economical. Without an Economy 7 meter, running storage heaters on standard rate electricity is very expensive. Flat owners should check whether their meter supports time-of-use tariffs and whether the wiring is sized appropriately for the storage heater load before committing to this option. Modern smart storage heaters can be controlled via a smartphone app, allowing more precise management of when heat is released.

Electric Panel Heaters and Infrared Panels

Electric panel heaters and infrared radiant panels are simpler and lower-cost to install than storage heaters, and they are suitable for flats where space or electrical capacity is limited. Panel heaters use convection to heat room air, while infrared panels emit radiant heat that warms surfaces and people directly rather than heating the air. Infrared panels are particularly effective in rooms with high ceilings or poor draughtproofing, where heated air rises and is lost before reaching occupants.

Neither panel heaters nor infrared panels require a water-based heating circuit, making them easy to install without significant disruption. They are controlled individually per room, allowing precise zone control. The trade-off is that they run on standard rate electricity, which is more expensive per unit of heat than gas. The economics improve as the building is better insulated and as electricity prices approach gas prices on an energy-equivalent basis.

Heat Pumps in London Flats

Air source heat pumps are technically feasible in some London flats, but practical and legal barriers are significant. The external unit requires planning permission in a conservation area, and in a leasehold flat the freeholder consent and building insurance implications must be checked before any external works are carried out. The external wall or balcony must have sufficient space and structural capacity for the unit, and the flat must have a water-based heating circuit — radiators or underfloor heating — for the heat pump to deliver heat to.

Where these conditions can be met, a heat pump provides the most efficient electric heating available, delivering three to four units of heat per unit of electricity at typical London temperatures. Split-system heat pumps can be installed without a separate hot water cylinder if a heat pump with a built-in domestic hot water function is specified. For London flat owners who can overcome the installation barriers, a heat pump qualifies for the Boiler Upgrade Scheme grant of 7,500 pounds subject to EPC eligibility.

Communal and District Heating Systems

Many purpose-built London apartment developments, particularly those built since the 1990s, use a communal heating system where a central plant room serves all flats via a heat interface unit in each apartment. These systems may be gas-fired from a centralised boiler room, heat pump based, or connected to a district heat network. Residents in these properties have no control over the heat source — they pay for heat supplied to their flat rather than managing their own boiler. District heat networks in London include schemes in Islington, Southwark, Lambeth, and Westminster. Prestige Engineers carry out heat interface unit servicing, fault diagnosis, and replacement for London flat owners and property managers on communal heating systems.