Aquaheat air-to-water, inverter heat pumps listed are designed for pools and spas with water volume up to 60,000 litres. For pools and spas with water volume less than 30,000 litres, consider using a hydronic heat pump with external heat exchanger when space heating is not required. Note that prices are continually reviewed and may change prior to the new listing. Prices listed below include GST ex Melbourne warehouse. Contact us for supply and installation, pickup or delivery arrangements that may require added freight cost.