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Understanding air-to-air heat pump energy consumption

With energy costs so high, air-to-air heat pump efficiency matters

Energy efficiency is at the forefront of many homeowners’ minds, as they think about protecting the planet and reducing their bills. If you're considering installing an air-to-air heat pump (also known as an air conditioner) to heat and cool your home, it’s sensible to have an idea of how much electricity it will use.

What determines the energy consumption of an air-to-air heat pump?

Many factors affect air-to-air heat pump energy usage and cost to run, including:

  • How well insulated your home is and how well it retains warmth or stays cool.
  • Its position and orientation. If it's sheltered from the sun and wind, it might need less energy for cooling and heating. If it's south-facing, with lots of windows, it may heat up more in summer (requiring more energy) but be warmer in winter (so need less).
  • How large the space is. Bigger spaces take more power to heat and cool.
  • How many people live in your home and what their needs are. Babies and elderly people may need a warmer house in winter or struggle more with heat in the summer. It also depends on how much time you spend at home, e.g. if you go out to work.
  • If you have blinds or curtains that keep the heat in or block out the sun.
  • If you have photovoltaic solar panels to provide “free” electricity.

The type, size and capacity of the air-to-air heat pump units also matters. If they're too small, they won't be effective or efficient. They may have to work harder to heat and cool the room, using more energy, at a higher cost, with less benefit in achieving a comfortable temperature. If they're too big, they'll create excess airflows, which could cause a draught. Again, that's inefficient and costly and may feel unpleasant.

Man is reading at the table while enjoying the perfect temperature inside his home
White living room with couch in it and a wall-mounted climate solution above it

How can I learn more about air-to-air heat pump efficiency and power consumption?

All electric and electronic devices sold in the EU have an energy efficiency rating. These range from A+++ (the most efficient) to D (the least), so you can make an informed choice. You can find the energy labels for all Daikin products on our website.

There are also seasonal efficiency ratings for heating and cooling products that all manufacturers of units sold in the EU must use. The Seasonal Energy Efficiency Ratio (SEER) refers to energy efficiency in cooling, and the Seasonal Coefficient of Performance (SCOP) refers to energy efficiency in heating. They measure efficiency in a typical environment and annual energy consumption.

You can estimate the heat pump energy usage yourself: most manufacturers state the annual consumption of their models in kilowatt-hours on their websites or in their brochures. If you know how much your supplier charges per kilowatt-hour, you can calculate roughly how much your bill will be – bearing in mind the variables above.

Find out more about air-to-air heat pump efficiency in the Daikin product range.