Written by the WarmFall team · Fact-checked 28 October 2026
Compare the whole heating arrangement
The right heater depends on when you need warmth, whether you can drill into the wall and how your home is already heated. WarmFall offers a fixed wall position, downward airflow, remote and adjustable thermostat. That combination may be convenient for a regularly occupied room, but convenience is not proof that it will cost less than every alternative.
A portable fan heater or oil-filled radiator may suit someone who needs to move heat between rooms or cannot fit a bracket. A panel heater may offer a different shape or control system. Storage heaters and gas central heating need a broader comparison of tariffs and installation. Start with your room and routine, then compare energy use on equal terms.
Worked running-cost examples
For these estimates we use 26.32p per kWh, the Ofgem Direct Debit average electricity cap rate for 1 October to 31 December 2026, with no VAT on electricity from October 2026 to March 2027. Check the Ofgem unit rates and standing charges and your own bill. Regional rates and individual tariffs can differ; the cap is not a limit on your total bill.
The calculation is power in kilowatts × heating hours × unit price. WarmFall is rated at 2000W, or 2kW. One hour at full heating power therefore uses 2kWh: 2 × £0.2632 = £0.5264, approximately 53p. The table assumes continuous full-power heating, one heater and a month of thirty three-hour evenings. It excludes the household standing charge, which is separate from this appliance-use calculation.
| Use | Heating hours | Electricity | Estimated cost |
|---|---|---|---|
| One hour | 1 | 2kWh | £0.53 |
| Three-hour evening | 3 | 6kWh | £1.58 |
| Thirty three-hour evenings | 90 | 180kWh | £47.38 |
Totals are calculated from the unrounded unit rate, not by multiplying the rounded 53p headline. Two heaters operating for all those evenings would use 360kWh and cost about £94.75; three would use 540kWh and cost about £142.13. A bundle reduces purchase price per heater, not the electricity price or the energy required by each appliance.
What the thermostat changes
The adjustable thermostat calls for heat when the room is below its selected temperature. If the room reaches that setting, heating can cycle rather than continue at full power. Actual use depends on insulation, outside temperature, draughts, room size and your chosen setting. In a cold room the heater may keep heating, so do not assume the thermostat will always halve the bill.
For illustration only, if the heating element operated for half of a three-hour evening, its 1.5 heating hours would use 3kWh and cost about 79p at the example rate. Across thirty evenings that would be £23.69. This is a hypothetical duty cycle, not a measured WarmFall result or a promised saving. Use your meter or a suitable energy monitor to understand your own pattern.
How the alternatives compare honestly
| Heating option | Useful strengths | What to consider |
|---|---|---|
| WarmFall | Wall-mounted downward warm airflow, thermostat and remote | Needs a suitable wall, socket and permission to fit |
| Oil-filled radiator | Often quiet, with warmth retained after switch-off | Slower response; stored warmth was paid for earlier |
| Fan heater | Quick local airflow; many portable choices | Fan sound, safe positioning and controls vary |
| Panel heater | Often slim, with convection or radiant designs | Controls and plug-in or wired fitting vary by model |
| Storage heater | Can store heat bought on an off-peak tariff | Needs suitable tariff, charging controls and installation |
| Gas central heating | Can serve several rooms through existing radiators | Gas is generally cheaper per kWh; boiler efficiency and zoning matter |
An oil radiator, fan heater or resistance panel heater drawing 2kW for an hour uses the same 2kWh as WarmFall at full power. Ceramic material and downward airflow do not create extra energy. Differences in comfort, positioning, response and thermostat control may change how long you use a heater, but they do not establish an automatic running-cost advantage.
Storage heating can be worthwhile where a suitable off-peak tariff and daily routine align. It is not fairly compared using only a standard daytime electricity rate. Gas is generally cheaper per kWh than electricity, although boiler losses affect useful heat. WarmFall may suit short, one-room use instead of heating unused rooms; it is not a promise to beat an efficiently zoned gas system.
Use heat where it is needed, safely
- Choose a room you actually occupy and check its size, insulation and draughts. Do not let essential parts of the home become dangerously cold or damp.
- Mount about 1.8m high following the manual. Check wall construction, fixings, clearances and the socket location; renters should obtain permission before drilling.
- Start with a comfortable thermostat setting and switch off when heating is no longer needed. Keep air inlets and outlets clear and never cover the heater.
- Compare actual meter readings over similar weather and use patterns. If using an energy monitor, check that it is suitable for the appliance load and follow the manual.
Frequently asked questions
Does DownFlow™ make electricity cheaper?
No. DownFlow™ describes the direction of warm airflow from the ceramic heater. It does not change your electricity tariff or make a 2000W heater consume less than 2kWh during an hour of continuous full-power heating.
Will WarmFall heat every room up to 25m² equally?
No. Up to 25m² is the stated room-size guide, not a guarantee of a particular temperature. A draughty room, tall ceiling, large window area or poor insulation can increase the heat needed. Check the room rather than relying on floor area alone.
Can I leave safety entirely to the auto-off?
No. The overheat cut-out, 8-hour auto-off and cool-touch casing are additional safeguards. They do not replace correct fitting, clear airflow or the instructions in the manual. Do not treat the auto-off as a reason to leave a heater running unnecessarily.
Where can I check the buying details?
See WarmFall prices and the official order page. Compare purchase price, safe fitting and expected running costs together. A heater that suits a particular room is not necessarily the best whole-home heating choice.