Media Wall InstallersLondon

Do media wall fires give off heat?

Yes. Media wall fires give off heat, usually 1 to 2kW from a fan heater behind the flame, enough to take the edge off a small London sitting room on a mild day. The flame picture runs on its own. The harder question is where that heat goes once it is sealed inside the framework.

How much heat does a media wall fire actually produce?

The heating element in a media wall fire is a fan heater rated at 1 to 2kW, usually switchable between the two settings. That is the same output as a plug-in fan heater with a flame picture in front of it. It will lift a fifteen to twenty square metre sitting room by a couple of degrees on a mild evening. It will not hold a Victorian terrace at temperature in February, and any installer who implies otherwise is selling you something.

Running costs are simpler than the fireplace pages make them look, and they shift every quarter when the Ofgem cap moves. Electricity has been hovering around 26p a unit, so 2kW of heat works out near 52p an hour and the 1kW setting near 26p. The flame effect on its own draws a few watts and costs pennies a week, which is how most of our clients end up using it once the novelty of the heater wears off.

Here is the part that catches people out. A media wall usually goes over something that already warmed the room, either an open fire or a gas fire whose supply we cap through a Gas Safe engineer at £150 to £250. That gas fire was putting out more heat than any electric unit will, so swap one for the other and the room's heating capacity can drop rather than rise. Worth knowing before you pick a fire on its output figure.

Where does the heat go inside the wall?

This is the part only someone who builds the structure can answer. A media wall fire is not an appliance standing in an open room. It is sealed into a timber stud void behind board, with a television mounted 150 to 300mm above the heat outlet. The fan heater is only one of the loads in that cavity. A large screen sheds heat the whole time it is on, and the transformer feeding the LED strip runs warm all evening. Retailers count the heater and stop there, because they ship a box and never see the framework it ends up inside.

Plasterboard sets a limit nobody puts on a product page. Board is not meant for sustained contact with air much above 50°C, and a fire-rated board's rating buys minutes of fire resistance in a tested wall build-up, not permission to trap warm air in a closed box. So we specify front-venting fires wherever the model range allows, discharging into the room instead of upward into the screen recess. The manufacturer's clearance is a measured gap, not an estimate. Rockwool RWA45 goes into the framework, working thermally as well as acoustically. The 24V transformer sits in a fire-rated enclosure, and the electrical work is certified to BS 7671 by our own NICEIC-approved electrician and complies with Part P of the Building Regulations. We run the fire at full heat for twenty to thirty minutes before we board out, so we can feel where the warm air is travelling while the void is still open. Our Entry Premium tier at £3,500 to £4,500 already lists the electric fireplace recess with safe ventilation as standard.

Can you have a media wall fire with no heat at all?

Yes, in two ways. Every fire we fit has a flame-only setting, so the element stays off from May through October while you keep the firelight. Or you specify a slim wall-effect panel with no heating element in it at all, which is a decision made at the survey rather than a button on a remote. Leaving the fireplace out of the spec altogether costs nothing and saves you the price of the unit, which surprises clients who assume the fire is the reason for the wall.

The fire is also where the budget moves fastest. A budget LED panoramic is around £400. The Solution Fires SLE140 lands between £450 and £900. A Dimplex Optimyst runs £700 to £1,500 and makes its flame from water vapour, which is the one people lean towards after seeing it close up. The extra-wide Acantha Vertex sits at £1,200 to £2,000. Every one of those numbers buys a flame, not warmth. Price them that way and the choice often changes.

From our London projects

Across 128 installs in Dulwich, Clapham, Bromley, Crystal Palace and Balham, part of 350 projects since 2022, we have measured the rooms these fires end up in rather than guessing at them. Clapham front sitting rooms run 3.2 to 3.8m wide on most of our 41 SW4 jobs, and the late-Victorian ones around Clapham Common North Side and Northcote Road reach 2.9 to 3.1m ceilings against a 2.7m average, so there is more air in them to warm than the floor plan suggests. Bromley living rooms in the 1930s semis run 4.0 to 4.5m wide, and those semis are 55% of our 19 builds in BR1 and BR2. Balham basement flats, in a borough where we have done 17 builds, drop to 2.4 to 2.6m ceilings. The same 2kW fire does not behave the same way in a narrow Clapham front room and a Bromley semi, which is why we size the heat at the survey rather than off the spec sheet.

Two of our walls were built deliberately without heat. A loft conversion master suite off Abbeville Road in SW4 took a 55-inch screen in flush walnut veneer with a slim wall-effect fireplace and no heat at all, finished at £4,100 over seven build days. A second sitting room in a Nightingale Lane loft in SW12 took the same call, £4,200 over seven days. Both are loft rooms with angled ceilings, small volume, and heat rising into them from the whole house already, so a fan heater sitting under the television would have been a liability. Both got Rockwool in the framework, the same 100mm we add as standard on Clapham jobs at £150, doing double duty on sound and on temperature.

More on what a fixed-price media wall costs in London, or price a build with or without a fire, or our Clapham installs. You can also generate a free design mockup for your own room, or head back to the Media Wall Installers London homepage.

See it in your own room.

Answer five short questions and our generator produces a photographic mockup of your media wall in about fifteen seconds. Yours to keep, no obligation.