How much does it cost?

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Warm water central heating used to be considered a luxury but now many Kiwis are waking up to the fact that it is the preferred method of home comfort as it just feels better to the human body. It transforms the way we feel about our homes and our temperate climate. In a new house, most things such as the carpets, curtains, kitchen, roof and windows are more expensive than the central heating making it one of the least expensive things that make a house a home. In an existing house, it is an investment in a transformation and you will have new found love for your home. Warm water central heating is going to cost more than just a log fire or an air heat pump but our customers say the effect throughout the home is vastly different and totally worth the additional cost.

One house in New Zealand is very different from another, in design and construction. This makes it difficult to calculate install and running cost for new and existing homes, therefore the calculator below will only give you a rough estimate of cost. We recommend working through the estimator with a sales person who can give you more information on the various options available. Should you wish to get a quote, either complete the estimator and request a quote at the end, or contact us.

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*If you are having trouble using our estimator tool, we recommend using the Google Chrome browser.

Running Costs

Heat SourceTypeCost of FuelCost of HeatMonthly Cost*
Natural Gas  Radiators $0.086 / kWh 11.2 c / kWh

$275

Underfloor $0.086 / kWh 10.6 c / kWh

$285

LPG  Radiator $125.00 / 45kg cyl 23.0 c / kWh

$575

Underfloor $125.00 / 45kg cyl 20.0 c / kWh

$604

Diesel  Radiators $1.08 / litre 11.0 c / kWh

$277

Underfloor $1.08 / litre 10.6 c / kWh

$320

Firewood  Radiators $85.00 / m³ 10.6 c / kWh

$270

Underfloor $85.00 / m³ 10.0 c / kWh

$250

Air to Water Heat Pump  Radiators 0.23 / kWh 10.6 c / kWh

$265

Underfloor 0.23 / kWh 9.4 c / kWh

$285

Ground Source Heat Pump  Radiators 0.23 / kWh 8.3 c / kWh

$210

Underfloor 0.23 / kWh 7.5 c / kWh

$225

*All costs include GST. All running costs take into account the thermal efficiency of the relevant heat source as independently measured by laboratory testing. Underfloor heating tends to use more energy than radiators due to longer running periods.  Fuel used is based on heating a single storey 240m2 (including garage) 4-bedroom home with two living areas heated to 21°C and two bedrooms heated to 18°C for 6-8 hours per day for a radiator system and 24 hours on low for underfloor heating.

Contact us for the running costs relevant to your home or building project.

Considered Factors

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