Heat Pump During a Heatwave: How to Stay Cool and Comfortable

When a heatwave strikes, you might wonder if your heat pump during a heatwave can handle the job. The good news? It absolutely can — if used properly and maintained regularly.

Here’s how to make the most of your heat pump during the hottest days of summer.

1. Can a heat pump handle extreme heat?

Yes — a heat pump during a heatwave is designed to keep your indoor temperature comfortable even when it’s over 30°C (86°F) outside. However, its efficiency can slightly drop when the outdoor temperature soars.

👉 Key point: Don’t expect it to cool your home to 20°C during a 35°C day, but it should maintain a pleasant environment if used efficiently.

2. How to optimize your heat pump during a heatwave

To get the best results from your heat pump during a heatwave, follow these best practices:

Keep the temperature steady

Avoid setting your thermostat too low or frequently changing it. A consistent temperature around 23–24°C (73–75°F) is ideal for comfort and efficiency.

Block out the sun

Close blinds and curtains to reduce indoor heat buildup and help your unit work less.

Reduce internal heat sources

Limit the use of ovens, dryers, and incandescent lights during peak heat hours.

Use dehumidify mode (if available)

Less humidity = more comfort. This mode uses less energy and still keeps the air pleasant.

3. Should you maintain your heat pump in summer?

Yes. A quick summer maintenance check can make a huge difference in your system’s performance.

  • Dirty filters or coils reduce airflow and cooling power
  • A technician can catch small issues before they become big (and expensive) problems
  • You’ll improve your unit’s lifespan and reduce energy use

💡 A well-maintained unit performs better during a heatwave.

4. What if your heat pump can’t keep up?

If your heat pump during a heatwave isn’t performing well, try these steps:

  • Check and clean the air filters
  • Make sure all vents are open and unobstructed
  • Compare indoor temperature expectations with reality — no system is built to cool to 20°C on a 35°C day

If the issue persists, it might be time to call in a professional.

Final Thoughts

Your heat pump during a heatwave can absolutely keep you cool, but only if it’s maintained and used correctly. With a few smart tips and the right setup, you can beat the heat — even on the hottest days.


Not sure your heat pump is working at its best?
Contact DB Climatisation for a quick inspection or an estimate.

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