Size Calculator

Heat Pump NZ exclusive sizing calculator.






Climate:

  • Mild
  • Cold
  • Freezing



Insulation Levels


Check the box if you have insulation

  • Ceiling insulation
  • Underfloor insulation
  • Wall insulation
  • Double Glazing



Room Heat Loss (optional)

Use this feature to add an estimated amount of heat loss to your heat pumps power output. For example, if your room has a permanently open door, staircase, large glass skylight, kitchen, anything that will drain heat from your room. Slide the "Room Heat Loss." to add heat (20-30% is the most common allowance)




Room Width, Length and Height

Room dimensions are in meters.

You have several options if your room is not square.

  • Work out the M3 manually and multiply that by the Watts required per M3.
  • You can work out the areas separately and add the required KW together.
  • With triangles, you can half the long edge and multiply that by the height.


Example of halving a triangle in a typical Chapple ceiling 



.



As a Chapple ceiling is a triangle, just divide the triangle section in two and add the wall height. Use this measurement B in the "Room Height".
























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Ras-25 Hitachi Heat pump (Installed)

Price includes back to back installation.Product Summary:The Hitachi Ras-25 is rated at 3.2 kW heati..

1,999 Ex Tax: 1,738

Ras-35 Hitachi Heat Pump (installed)

Price includes back to back installation.Product Summary:Our most popular Heat Pump, the Hitachi Ras..

2,099 Ex Tax: 1,825

Ras-50 Hitachi Heat Pump (installed)

Price includes back to back installation.Product Summary:The Hitachi Ras-50 is our second most popul..

2,399 Ex Tax: 2,086

Ras-60 Hitachi Heat Pump (Installed)

Price includes back to back installationProduct Summary:The Hitachi Ras-60 is rated at 7kW heating a..

2,599 Ex Tax: 2,260

Ras-70 Hitachi Heat Pump (Installed)

Price includes back to back installationProduct Summary:The Hitachi Ras-70 is the second largest Hig..

2,799 Ex Tax: 2,434

Ras-80 Hitachi Heat Pump (Installed)

Price includes back to bak installation.Product Summary:The Hitachi Ras-80 is the largest High Wall ..

3,099 Ex Tax: 2,695

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