Cheapest electric heating to run in the UK

Cost of heat = (unit rate in pence per kWh ÷ system efficiency) × kWh of heat needed. A 1kW infrared panel run for four hours uses 4kWh; at 27p that is £1.08 regardless of the brand. The same 4kWh of heat from a heat pump at a seasonal efficiency of 3.0 uses about 1.33kWh, or roughly 36p.

This is why running-cost comparisons should always start from the heat a room loses, not from the wattage printed on a heater. Two panels of identical wattage cost identical amounts to run for the same hours; the differences suppliers advertise come from controls, placement and how long the heater is actually on.

Heat pumps win where the whole property is heated steadily through the winter and the building can take the emitter and installation work. Off-peak storage heating can be competitive where a time-of-use tariff gives a materially cheaper overnight rate and the household tolerates heat arriving on a fixed cycle. Infrared and electric panel heating are cheapest where the heated volume and hours are small: a home office, a spare room, a workshop, a hall used two evenings a week.

Installation cost is part of running cost over any realistic ownership period. Spending several thousand pounds to save a modest amount in a room used a few hours a week rarely pays back, while a low-capital zoned heater in that room often does.

Unit rates change every quarter and vary by region and payment method, so treat any figure quoted on a supplier site - including ours - as indicative and check your own bill. Compare the full picture: unit rate, standing charge, and whether an off-peak window genuinely matches when you need heat.

Time-of-use tariffs only reduce heating cost if you can shift the load. Without storage - thermal mass, a cylinder or a battery - a cheap night rate does very little for heaters that run in the evening.

Ask any supplier claiming low running costs for the assumed unit rate, the assumed hours per day, the room heat loss used, and whether the figure covers one room or the whole property. If those four inputs are missing, the number cannot be verified.

We are an advisory and comparison service rather than an installer, so our role is to specify the requirement properly - room sizes, insulation, occupied hours - and pass it to heating suppliers who quote against the same basis.