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".