Electricity price: electric heater or reversible air conditioner? Here is the most economical heating mode.

the essential
Tariff shield raised to 15%, energy shortage… heating this winter will quickly become a real headache. While all-electric heating is one of the most popular heating methods among the French, reversible air conditioning is by far the most economical.

Given the rise in energy prices, adopting economical and efficient heating this winter has never been more relevant. It must be said that the consumption of heating devices represents an average of 67% of the energy bill of a home.

Among the most popular heating methods among the French, the all-electric, in constant progression, ranks second. Electric radiator or reversible air conditioner to heat your home this winter, the midi office helps you choose.

Between 25 and 40% energy savings on average

Specialists are unanimous: if air conditioning was considered to consume a lot of energy, today this is no longer the case. In addition to cooling in summer, “reversible air conditioning consumes on average between 25 and 40% less than a conventional heating device,” explains TotalEnergies.

According to the Hellowatt site, an electric heater consumes an average of 3,800 kWh per year, or even more for older models. To lower the electricity bill, it is necessary, therefore, to opt for air conditioning.

Operating on the principle of a heat pump in winter, it produces more energy than it consumes; up to 4 times more. Even if it costs much more to buy than an electric radiator, reversible air conditioning saves you money all year long.

Pay attention to the seasonal coefficient of performance

The consumption of a reversible air conditioner depends mainly on the power of the device and the time of use. Therefore, it is important to correctly size the appliance according to the parts to be heated.

“This air conditioning system does not consume the same amount of electricity in summer as it does in winter. During the hot season, the refrigeration system consumes a lot of energy, while the heat emitted by the air conditioning is very energy efficient”, specifies TotalEnergies.

To find out if your air conditioner uses a lot of energy or is economical in heating mode, look at its Seasonal Coefficient of Performance (SCOP). For example, “an air conditioner, with a SCOP of 4, restores 4 kWh of heat for every kilowatt hour of electricity consumed. This means that of the 4 kWh returned, only 1 kWh will be billed. Therefore, it is possible to achieve up to 75% savings compared to an appliance that will replenish 1 kWh for each kWh consumed”, TotalEnergies figures.

On the other hand, reversible air conditioning is often used as auxiliary heating. To heat the house as a whole, it will often be accompanied by another mode of heating. Please note that below -10°C, the air conditioning system stops working.

case concrete

Take the example of a 110m paviliontwo on the outskirts of Toulouse, built in the 1980s. According to a study by Cozynergy, an expert in home energy renovation, replacing the home’s electric heating system with an air/air heat pump would save up to 63% energy, that is, approximately €1,663 per year.

This change would also save the planet 9 kg CO2 per mtwo/year is the equivalent of 5,000 km of a city car for one year.

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