Pool heat pumps that make every month swimming season

CHR AstroMax pool heat pumps start at $5,791 for the 17kW W17 and go up to $12,922 for the 50kW B50, including GST. Installation starts from $999, and your final installed price depends on your site and electrical supply. Running costs depend on your electricity price, pool size and how warm you keep it; an inverter heat pump slows right down once the water is up to temperature.

For a 40,000 litre pool we'd usually recommend the 35kW AstroMax H35 Turbo, which suits pools up to about 60,000 litres on single phase power. The 24kW C24 suits pools up to about 30,000 litres. Use the size calculator above, or call us to confirm for your location and how warm you like the water.

For most Australian pools, yes. A heat pump uses far less energy than gas or electric element heaters, so it costs much less to run over a season, and it lets you swim well beyond summer. It also works at night and on cloudy days, unlike solar. The trade-off is a higher upfront price than a basic gas heater.

A pool cover is the cheapest first step, because most heat is lost through the surface. After that, solar heating has the lowest running cost but depends on sunshine. A heat pump is the cheapest way to keep a pool warm reliably, day and night, and costs far less to run than gas.

Heat pumps heat more slowly than gas, so they work best left running to hold the temperature. Their output drops as the air gets colder, which is why sizing matters. The upfront price is higher than a basic gas heater, but lower running costs usually make up the difference.

Heat pumps move heat from the air into your pool rather than generating it, so they use far less energy than gas or electric resistance heaters. Inverter models like the AstroMax range slow down once the pool is at temperature, which keeps running costs low. Running it during the day on rooftop solar reduces costs further.

Yes. Heat pumps keep working in cooler air, though output drops as the air temperature falls (at 15°C air the H35 Turbo still delivers up to about 28.6kW). Choosing the right size and using a pool cover are the keys to comfortable swimming through the cooler months.

Yes. All AstroMax models suit pools and spas. For a pool-and-spa combination, size the heat pump for the total volume and how quickly you want the spa to heat, and talk to us about the best option.

Yes. The AstroMax units also have a cooling mode for very hot weather. For example, the W17 provides up to 9.49kW of cooling at 35°C air.

They're quiet. The W17 is 18–27.8 dBA at 10 metres, and the H35 Turbo has a Silence mode that cuts noise by up to 25%. Leave the recommended clearance around the unit (450mm minimum at the sides on the slim models).

We deliver to Perth, Sydney, Melbourne and Adelaide metro areas, and you can collect free from our warehouses in Osborne Park WA, Kemps Creek NSW, Mulgrave VIC and Wingfield SA. Delivery cost is shown at checkout for your postcode.

5 years on all parts, 15 years on the compressor and 25 years on the titanium heat exchanger.