Winter energy crunch: Report reveals which heaters use the least power

As winter arrives with rising energy costs, a government report offers guidance on choosing the most energy-efficient appliances for home heating. The study highlights that air conditioners, particularly those with Inverter technology, consume less electricity than fan heaters, stoves, radiators, or electric panel heaters.

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Inverter air conditioning units use a variable speed compressor, therefore adjustable. This allows control of the heating output (or cooling in summer) and dosing of the compressor's operation based on the difference between the desired temperature and the ambient temperature.

Inverter air conditioners achieve this efficiency through variable-speed compressors. These compressors adjust their speed to match the difference between the desired room temperature and the ambient temperature, reducing energy use once the target is met. In contrast, non-inverter models operate at full power continuously while active, leading to higher consumption.

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In contrast, non-inverter models use a fixed-speed compressor and therefore constantly operate at full power while they are on.

While Inverter units may have a higher initial cost, their long-term energy savings can offset the investment. The report also recommends paying close attention to energy efficiency labels, favoring products with an 'A' rating for the highest performance. Additionally, the National Electricity Regulatory Entity (ENRE) provides an online calculator to help consumers estimate the energy consumption and associated costs of their appliances.

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For keeping the cold away from the windows, it is best to use those with Double Glazed Hermetic (DVH), which guarantee excellent insulation.