AI-generated illustrative interior · 6 minute read · UK heating guide
Infrared heating running costs depend on how much electricity your system uses and what you pay for each kilowatt-hour. There is no single daily cost that applies to every home. A well-insulated room used for a few hours has a different heating requirement from a draughty property occupied all day.
This guide shows you how to calculate an estimate, understand thermostat cycling and compare a heating quote on consistent assumptions. It covers both individual heaters and the room-by-room approach needed for a concealed carbon-film heating system.
THE COST FORMULA
How much does infrared heating cost to run?
Start with the electrical input power, the time the heating actually draws that power, and your electricity unit rate:
Cost in pounds = input power in kW × equivalent full-power hours × electricity price in £/kWh.
Divide watts by 1,000 to convert them to kilowatts.
For example, a heater drawing 600 watts continuously for one hour uses 0.6 kWh. At an illustrative rate of 25p/kWh, that costs 15p. This rate is an example, not a statement of the current price cap or your supplier’s tariff.
Worked examples for different electrical inputs
| Input power | One full-power hour | Four full-power hours | 30 days at four hours/day |
|---|---|---|---|
| 400 W | £0.10 | £0.40 | £12.00 |
| 600 W | £0.15 | £0.60 | £18.00 |
| 1,000 W | £0.25 | £1.00 | £30.00 |
| 1,500 W | £0.375 | £1.50 | £45.00 |
These are arithmetic examples, not recommended heater sizes or a prediction for a particular room. They exclude standing charges, installation and any electricity use outside the stated input. For a system with transformers and controls, use total input measured at the electricity supply rather than assuming the heating-element rating includes every component.
Why scheduled hours are different from heating hours
A thermostat can switch heating on and off during its scheduled period. A 1 kW zone scheduled for six hours, drawing full power for half that time, would use 3 kWh and cost 75p at the example tariff. The 50% operating time is an assumption, not an expected performance figure. In cold weather or during warm-up, the same system may run for much longer.
THREE KEY VARIABLES
What affects infrared heating electricity consumption?
Heat loss and the building fabric
Room size alone cannot tell you how much heating is required. External walls, windows, insulation, air leakage, outdoor conditions and the desired indoor temperature all affect heat loss. Ask for room-by-room heat-loss calculations before choosing equipment. A smaller heater is not a saving if it cannot keep the room comfortable.
Heating controls and occupancy
Room thermostats and schedules help match heating to the spaces you use. Zoned heating controls can avoid unnecessary operation, but savings depend on your starting point and how the building behaves. Account for warm-up time and appropriate background temperatures in less-used rooms.
Your electricity tariff
Use the unit rate on your bill. For a time-of-use tariff, calculate consumption separately for each price period and add the results. Solar generation may offset some purchased electricity when generation and heating demand coincide; it does not mean winter heating is free.
CHOOSING A SYSTEM
Are infrared heating panels and carbon film equally costly to run?
If two systems draw the same electricity from the supply for the same duration at the same tariff, their electricity cost is the same. Their installation, surface area, positioning and controls can still create different comfort conditions and operating patterns.
Visible infrared heating panels and concealed carbon film are different installation options. Energy Carbon’s carbon-film heating products can be integrated into suitable ceilings, walls or compatible floor constructions. Compare the complete proposed system, including electrical input, controls, finishes and installation requirements.
Read how infrared heating works for an introduction to radiant warmth and system design. Our guide to mean radiant temperature and home comfort explains why surrounding surface temperatures also matter.
FAIR COMPARISONS
Is infrared heating cheaper than gas or a heat pump?
It is not responsible to promise that infrared heating will always be cheaper. Electricity and gas have different unit prices, while a boiler’s seasonal efficiency and a heat pump’s seasonal performance change the cost of useful heat.
The Energy Saving Trust’s infrared heating guidance advises caution about replacing gas central heating throughout a home with infrared heating. It also explains that heat pumps use less electricity to deliver the same amount of heat. Any comparison should include installation, controls, hot-water provision, maintenance and the rooms actually being heated.
A comparison between heating one occupied room and heating an entire house measures a change in how the property is used as well as a change in technology. Ask suppliers to separate those effects.
YOUR PROJECT CHECKLIST
How to get a useful whole-house running-cost estimate
- Describe the building. Provide floor plans, construction details, insulation, glazing and current heating arrangements.
- Set consistent comfort requirements. Agree room temperatures, occupancy and heating schedules.
- Request the calculation assumptions. Ask how annual electricity use was estimated and which weather data and tariff were used.
- Include the complete system. Separate space heating from hot water and include controls and power components.
- Compare a range. Test colder weather, longer occupancy and a higher electricity price instead of relying on one optimistic number.
For example, a system estimated to use 4,000 kWh annually would cost £1,000 at 25p/kWh or £1,200 at 30p/kWh. The 4,000 kWh figure is purely illustrative; it is not an Energy Carbon performance claim or a typical-home estimate.
COMMON QUESTIONS
Frequently asked questions
Does a low-voltage system automatically cost less to run?
No. Electricity bills are based on energy consumed in kWh, not simply the system voltage. Compare total electrical input and operating time.
Should I include the standing charge?
For the extra cost of running a heater on an existing electricity supply, keep the standing charge separate. For a complete household bill comparison, include all applicable standing charges and explain whether any supply is being retained or removed.
Can a short test predict my annual heating bill?
A meter reading can show consumption during that test, but one mild week does not represent a winter. Record weather, temperatures, occupancy and other electricity loads before using measured results to evaluate a proposal.
NEXT STEPS
Plan your infrared heating system with Energy Carbon
Choosing a heating system starts with the building and how you use it. Explore our infrared heating case studies, then request a project consultation to discuss suitable products, installation surfaces and room-by-room controls.
