Air conditioning heating efficiency and cost savings

Using air conditioning for heating can potentially halve winter heating bills in certain households, depending on the existing boiler type, gas consumption, and electricity pricing. Experts note that the cost-effectiveness depends on the price of producing one kilowatt-hour (kWh) of heat.

Compared to older gas boilers with approximately 65% efficiency, modern condensing gas boilers (99% efficiency) or inverter split air conditioners can offer significant savings. Inverter air conditioners are particularly economical when using the H tariff, which is available between October 15 and April 15. Under this tariff, electricity used for heating does not count toward the standard annual residential limit of 2,523 kWh.

Regarding operation, inverter air conditioners are designed to adjust compressor power based on room temperature requirements rather than running continuously at full capacity. For those at home all day, maintaining a steady temperature is recommended, as frequent manual switching can cause temperature fluctuations. While lowering temperatures during absences can reduce heat demand, actual savings depend on the unit's efficiency and the building's insulation.