Heat Pump Pool Heaters
If you are looking to heat your pool during the warmer months without putting solar on the roof the a heat pump may be the answer. It is the preferred heating method for those not looking to compromise the aesthetics of their home and also when a home is not “solar feasible” (i.e. solar will not fit on roof.) A heat Pump, when properly sized, can maintain any desired pool temperature between 25 – 30 degrees, for 9 months of the year. The cold winters in Perth dramatically reduce efficiency. A Heat Pump will work when the outside air temperature is above 15°C.
How Does It Work?
Swimming pool heat pumps work by taking the heat in the atmosphere, multiplying it with electricity and transferring that heat into the water. They operate in the same way as a reverse cycle air conditioner with a titanium heat exchange for the pool water.
System and Installation Cost
System unit cost range: $3200 – $9600 Installation cost: $350 – $950 Typical 8 x 4m pool: $5800 Unit $6200 Installed + Electrics
Energy Rating and Efficiency
The manufacturer determines the KW output at a specific water/air temperature and relative humidity value. To accurately compare one unit to another, these test values must be the same, or the comparison will be distorted. Heat pumps are also given a COP (coefficient of performance) rating, generally 3 to 6 COP, which converts to an efficiency of 300 to 600%.
Cost of Operation
The operational cost of a heat pump is relatively low compared to gas pool heating. For every $1 of electricity it uses it will produce $5 – $6 of energy into the pool. The typical 8 x 4 pool averages $250 to $1000 per year for heat. This is also dependant on run times, winter being more expensive.
Size Heater Required
Heatpumps are sized based on their horsepower and KW rating output. Standard sizes are available in single and three phase. The average pool 40000L pool would require a minimum of 16 KW unit.
Astral and Oasis heatpumps have a life expectancy of 10 – 15 years. They are made with titanium heat exchanges that will last a lifetime. Compressors and other moving parts may require service after years of service.