Heating Options for Flats: What Works and What You're Allowed to Change

Most UK flats use one of four set-ups. Gas combi boilers are common in converted houses and low-rise blocks with gas supplies. Electric storage heaters or panel heaters are common in purpose-built blocks, especially higher-rise ones where gas isn't allowed. Communal or district heating, where a central plant serves the whole building, is increasingly common in new developments. And a smaller number of flats now use heat pumps, either individual units or shared systems.

Your current system usually shapes what's practical. Switching from electric to gas, for example, means getting a gas supply into the flat and a flue out of it – often impossible in a high-rise block.

If you own a leasehold flat, the lease will usually say what you can alter without consent. Heating changes that involve the structure, external walls, flues, the gas supply or the roof generally need the freeholder's permission. Fitting an outdoor heat pump unit or a new flue terminal almost always does. Some leases also restrict noise-making equipment.

Ask the freeholder or managing agent early. They may need drawings, a method statement and your installer's details, and they may charge a fee for considering the request.

If your flat already has gas, replacing an old boiler with a modern condensing combi is usually the most straightforward option. Flats have particular flue challenges: the terminal must be the right distance from windows, doors, balconies and walkways, and the condensate pipe needs somewhere to drain. Plume kits can redirect the flue exhaust. A Gas Safe engineer will check these details on the survey. See boiler flue rules and condensing boilers explained.

For flats without gas, modern high-heat-retention storage heaters are often the best value if you're on an off-peak tariff. They charge overnight and release heat through the day with much better control than old-style heaters. Panel radiators are cheap to install and controllable room by room, but cost more to run if used heavily. Electric boilers let you keep wet radiators and a hot water cylinder but run at the same unit cost as panel heaters.

See replacing storage heaters, electric radiators vs central heating and is an electric boiler right for you.

Heat pumps are possible in some flats, especially ground-floor or top-floor flats with a balcony, garden or roof space. Compact air-to-water units, through-wall units and shared ground loop systems are all being used in UK blocks. The main hurdles are space for the outdoor unit, noise limits, consent from the freeholder and planning permission in some cases. See heat pumps vs gas boilers.

If your block has communal heating, you usually can't switch to another system yourself. You can, however, ask for heat meters, controls and a breakdown of how charges are worked out. Good room-by-room controls and well-balanced radiators still make a difference to comfort and cost. See heating controls explained.

Get quotes from local heating engineers and mention you're in a flat, so they can check access, flue routes and consent requirements during the survey.