New Zealand · Home project calculators

Work out the cost.
Plan your next step.

Numbers to help you make decisions about your home, starting with heating. Check the size, budget and running costs before you talk to an installer.

Find a calculator

1 tool available
01 / Heating

Heat pumps

Heat Pump Calculator NZ

Estimate the heating capacity for your space, the installed budget and the electricity cost. Compare single-split, multi-room and ducted options.

  • Room & home sizing
  • Installation budget
  • Running costs
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What to do with your estimate.

A useful estimate tells you what to check next. Change the inputs to suit your home, compare the ranges, then print a brief to discuss with an installer.

Our calculators are the first step. We include every one of its assumptions and source links so you can judge what the numbers do (and do not) cover.

Read how we work