What size heat pump do I need for my pool?
The right size heat pump keeps your pool comfortable with the unit working calmly in the background. Here is how to match output to your pool.
Key Takeaways
- Heat pump size is matched to your pool volume in litres
- As a guide: 17kW suits pools up to 20,000L, 24kW up to 30,000L, 35kW up to 60,000L and 40kW up to 80,000L
- If your pool sits between sizes or you want faster heating, size up. Our team can help you choose
Choosing the right size heat pump for your pool is the most important decision you will make. Size it well and your pool sits at a comfortable temperature with the unit working calmly in the background. Undersize it and the pump runs harder, takes longer and may never quite get there. Here is how to get it right.
Heat pump size is matched to your pool volume
Pool heat pumps are sized by output in kilowatts, matched to how much water you need to heat, measured in litres. The larger the pool, the more output you need.
A simple sizing guide
As a general guide, match your pool volume to the unit like this:
- Up to 20,000L, the 17kW AstroMax W17
- Up to 30,000L, the 24kW AstroMax C24
- Up to 60,000L, the 35kW AstroMax H35 Turbo
- Up to 80,000L, the 40kW AstroMax R40
When to size up
If your pool volume sits close to the top of a bracket, if you have a spa as well, if the pool is exposed to wind or if you want faster heating and year-round use, it is worth stepping up to the next unit. A little extra output means the pump reaches temperature sooner and holds it more comfortably.
Once you have a size in mind, see how much a pool heat pump costs.For a side-by-side of your options, read our choosing your heating guide.
Not sure of your pool volume, or sitting between two sizes? Get in touch with our team and we will help you choose the right size the first time.
Ready for year-round swimming?
Speak to our team about heating your pool. We'll help you choose the right unit for effortless, year-round comfort.