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Installation and Running Costs for Warm Water Central Heating Systems

Every system is individually specified to take into account the many different variables that need to be considered when designing a central heating system. This means that giving accurate estimates is very difficult as no two homes are the same! However, to give you some idea of approximate costs for installing and running our range of central heating systems, we have done a cost comparison exercise as detailed in the PDF below.

Download the latest Cost Comparison Sheet

These prices show approximate costs for a single storey 240m2 (including garage) 4-bedroom home with two living areas and two bathrooms.

Compare the running costs versus installation costs for each system to get a sense of what system works for you, learn more about the costs of central heating systems with air-to-water heat pumps by reading the case studies below, or contact us to discuss your project and get more information on central heating running costs.

Heating Cost of Air-to-Water Heat Pumps with Underfloor Heating

All hydronic heat pump installations by CHNZ now include a power meter to measure the electricity used by the heating system. During the 2013 heating season (May through October), Central Heating New Zealand asked a selection of Christchurch homeowners with air-to-water heat pumps and underfloor heating to send monthly meter readings, providing excellent reference for what homeowners might expect with a similar system in their home.

There is a correlation between running cost and the size of the house.

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Click on the markers to learn more about the heating needs of each house.

At the height of heating season, monthly running costs ranged from $150 to just under $300. The biggest factor in this price difference is the total area of the house, though the homeowners’ temperature preferences do play a role as well. The relationship between area of the house and heating costs becomes apparent in the graph.

Read the full case study.

Heat Cost of Air-to-Water Heat Pumps with Radiators

During the 2014 heating season, we looked at the amount of electricity used only by the heating system for six different Christchurch homes. These homes’ livable areas ranged in size from 98sqm to 340sqm and included both retrofitted and new homes in a variety of different architectural styles.

Heat Pump Radiator Graph

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Click on the markers to learn more about the heating needs of each house.

Even during July, the coldest month of the year, the average monthly cost was under $300. The study reconfirmed that older homes require more energy to maintain a comfortable temperature than newer homes due to differences in insulation. Even so, our study’s 105sqm home built in the 1930s averaged only $99/month! This means that with the right size and placement of radiators, it’s possible for homes of all sizes and ages to benefit from an efficient hydronic heat pump and radiator heating system.

Read the full case study.

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