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Do you use your heat pump to cool your home in summer? Well, you’ll be glad to hear that using air conditioning doesn’t mean your summer energy bill needs to go through the roof! Below are some energy saving tips to help you stay cool in summer.

Maintain your AC unit for peak performance

Summer is a great time to prepare your air conditioning for use in the warmer months, especially if you’ve used it heavily to heat your home over winter.

Annual service

Each year, you should have the following things checked on your heat pump/air conditioning unit, and repaired or replaced if necessary:

  1. Inspect ducts and blowers
  2. Check and/or replace air filters
  3. Check thermostat operates correctly
  4. Seal any duct leaks
  5. Check airflow
  6. Inspect electrical terminals
  7. Check unit heats and cools correctly
  8. Inspect belts for tightness and wear


Monthly inspection

Keep the air filters clean


Each month, it pays to check the air filters. During summer, there’s a lot of plant matter in the air that will be carried into your home on shoes, clothes and animals. This can clog up your filters faster than you think, meaning your unit must work harder to keep your home cool.

Keep the outside unit clear- Make sure plants, debris and shrubbery aren’t too close to the outside unit. The steady flow of air through the unit is essential to making it work.

Keep the outside unit cool-  Make sure the outdoor unit is in a cool, dry place, because the hotter the outdoor unit gets, the harder it works to pump cool air into your home.

Using the right air conditioner settings can help you save money


Using the right heat pump settings for summer is essential if you want to effectively cool your home without breaking the bank.

  • For maximum efficiency, set your thermostat to between 20C – 22C. Your home won’t cool down any quicker if you set the temperature lower, but your unit will work a lot harder – meaning you’ll be using a lot more power.
  • Maintain a steady thermostat setting and turn the pump off when it is not required for extended periods of time. You can also use of a timer or app controlled device to turn it back on so that the room is cooled for your arrival.
  • Sometimes the heat isn’t the problem, it’s the humidity. If you have a dehumidifier setting on your heat pump, try turning it on for half an hour to dry out the air. This can make a big difference to how cool your home feels.
  • If you have a ducted central heating or cooling system in your home, make sure that the vents are all open. It may sound counter-intuitive, but if you have closed vents, your air conditioner must work harder to keep the air cool, which can push up your energy bill.

Keep the cool air in


Cooling your home works in the same way as heating it but in reverse – you want to keep the cool air in!

  • Close windows and doors, and pull down blinds or close curtains if you have the sun streaming in.
  • If you’re at home on your own, close off the area you’re cooling so your air conditioning isn’t working to cool down rooms you’re not using.
  • Think about your appliances too. If you have a big meal to cook, close the kitchen off from the area you’re cooling down. Don’t leave computers or televisions turned on if no one’s using them, as these items generate a lot of heat.
  • Close the bathroom door if someone’s having a shower, and leave it closed (with the window open) while the room cools down again afterwards. Bathrooms don’t just get hot, they get humid too – which is hard for your air conditioning to deal with.
  • Remember that good quality insulation doesn’t just keep your home warmer during the winter; it keeps it cooler during the summer, too. If you haven’t already, consider insulating at least the floor and ceiling of your home.


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