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Get an Estimate

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 India 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.

Running Cost

Heat SourceTypeCost of FuelCost of HeatMonthly Cost*
Gas Boiler (Natural Gas) Radiators$0.086 / kWh11.2 c / kWh$275
Underfloor$0.086 / kWh11.2 c / kWh$285
Gas Boiler (LPG) Radiator$125.00 / 45kg cyl23.0 c / kWh$575
Underfloor$125.00 / 45kg cyl23.0 c / kWh$604
Diesel Boiler (Diesel) Radiators$1.08 / litre12.2 c / kWh$277
Underfloor$1.08 / litre12.2 c / kWh$320
Biomass Boiler (Firewood) Radiators$85.00 / m³11.5 c / kWh$293
Underfloor$85.00 / m³11.5 c / kWh$332
Air to Water Heat Pump (Electricity) Radiators0.23 / kWh11.5 c / kWh$265
Underfloor0.23 / kWh9.4 c / kWh$285
Ground Source Heat Pump (Electricity) Radiators0.23 / kWh8.3 c / kWh$210
Underfloor0.23 / kWh7.5 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 but at lower water temperatures. Fuel used is based on heating a single storey 200m2 (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.

Cosidered Factors


Houses in colder parts of the country require more heating. Natural gas is not available in the South Island.

House Design

In any given location the heat loss of a house is affected by insulation, amount of glazing and complexity of build.


The amount of energy used for heating is highly dependent on temperature preference and operating hours.