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Infrared Heating Calculator – Wattage & Cost Estimator

Use our infrared heating calculator to accurately estimate the wattage, heater quantity and project cost required to heat your space using infrared panel heaters or infrared bar heaters. This tool is designed for homes, commercial buildings, churches, workshops and specialist environments.

Simply enter your room dimensions, select the building type and choose your preferred infrared heater range. The calculator will recommend suitable infrared heaters, calculate total heating output and highlight whether smart thermostat control is required for optimal performance and efficiency.

Wattage Calculator

1
Choose room type

Choose the type of building or environment you're heating.

Select one option to continue.

New build property
Modern home
Older property
Commercial building
Church or place of worship
Hot yoga studio or wellness space
2
Select measurement units
3
Enter room dimensions
Total heating required 0 W
Total heating output 0 W
Estimated project cost £0.00

How to use this infrared heating calculator

This infrared heating wattage calculator provides a general guideline based on typical room dimensions, insulation levels and building characteristics.

For complex layouts, higher temperature requirements, glass-heavy rooms or listed and commercial buildings, our team can provide a tailored infrared heating plan.

If you need further guidance, you can contact our technical team for advice specific to your space.

Infrared heating calculator FAQs

How accurate is the infrared heating wattage calculator?

The calculator provides a reliable estimate based on room dimensions, ceiling height and usage type. It is designed to give an accurate starting point for system sizing. Final specifications may vary depending on insulation levels, building construction and heat loss characteristics.

Does the calculator account for ceiling height?

Yes. Unlike basic calculators that only consider floor area, this tool factors in ceiling height by calculating room volume. This is particularly important for spaces with high ceilings where heating demand is higher.

Why does infrared heating use watts per cubic metre?

Infrared heating performance depends on the volume of the space rather than just floor area. Using watts per cubic metre ensures the calculated output reflects how infrared heat interacts with people and surfaces within the room.

Should I match or exceed the calculated heating requirement?

It is recommended that the installed infrared heating output meets or slightly exceeds the calculated requirement. This ensures consistent comfort, faster warm-up times and avoids running heaters at maximum output continuously.

Can this calculator be used for commercial or industrial spaces?

Yes. The calculator is suitable for residential, commercial, industrial and specialist environments. Selecting the correct space type adjusts the calculation to reflect real-world usage and heating demand.