Running Costs & Energy Efficiency » HPAC Energy Centre

Running Costs & Energy Efficiency

1.  How much does a heat pump cost to run?


This calculation considers the energy efficiency of your particular unit, whether it is sized correctly for the area, your individual energy company rates and how effectively you use the unit.

The EECA (Energy Efficiency Conservation Authority) has identified heat pumps as one of the most energy efficient forms of heating around.

Heat pumps do not create heat, they simply move available heat from one place to another. The little energy that is needed is predominantly used to run the compressor. A heat pump typically uses 1kW to create 4kW of heat.

Check out blog to know more about The 5 best ways to prep your home for winter

Check our blog to know more about 8 home heating myths busted.





2. If I turn my heat pump up to 28°C will it heat the room faster?


A heat pump should not be operated like a radiant heater. Turning your heat pump up to 28°C will not make the room warm up any faster. In fact, it will use more energy as the heat pump attempts to absorb energy to achieve this unrealistic temperature.

By setting the temperature to what is actually required, say 18-22°C in heating mode (a comfortable temperature during winter), the heat pump will respond in the most efficient way and will reach this quickly and continue to maintain it – without further adjustment. Using a timer to activate this temperature half an hour before you arrive home will mean you return to warm, cosy comfort.


3.    How much does an underfloor heating cost to run?


To work out an estimate of electric underfloor heating running costs, we take say an average charge of electricity of 20 cents per kilowatt hour and assuming you are using a 7 day programmable thermostat operating 2 hours in the morning and 4 hours in the evening switching at 50% of the time your cost for an average bathroom is about (20c X .4 X 6 /2 )= 24 cents per day. For a family room of say 16 metres an estimate would be about (20c x2 x6 /2 )=120 cents per day.


Contact our climate control experts to work out the best options for your property.



4.    How much does a ventilation system cost to run?


The main component of a ventilation system is the fan. A two-vent system costs around $15 per month running continuously - that's around 2c per hour. A 4-room system costs around 3c per hour. This estimate is based on 27c/kWhr.


Check our blog to know more about The pros & cons of different home ventilation systems


5. What is Energy Rating Labels?


According to, the Energy Rating Label has a scale of stars to show how energy efficient a model is, compared to other models the same size/capacity. More stars = more energy efficient.

The energy consumption figure is in kWh and can be used to compare with any other heat pump. You can use this figure and the kWh cost from your latest power bill to calculate how much this model will cost to run. The average cost of power for a kWh in New Zealand is 25¢. Lower kWh = cheaper to run.

The product’s annual energy consumption in kilowatt-hours (kWh) is based on standards testing. Check the key assumptions used in this testing to make sure they match how you will use the product. Annual energy consumption for heat pumps assumes full output capacity can be achieved with an outdoor temperature of 7°C when heating and of 35°C when cooling. You should only compare star ratings of heat pumps with the same or similar capacities. 


From heat pumps, ventilation to hot water heat pumps and underfloor heating, we’ve got a solution for every season.

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