Thursday, November 19, 2009

What type of heat pump to choose? – PART 2


First step is to calculate how much specific heat loss your building has per square meter of usable floors (heat loss in W/m2). If your house has more than 60W/m2 maximum specific heat loss then I would not recommend installing heat pump. You should first think of additional insulation of the house. Typical house where heat pump is much recommended:


  • Net floor area = 150m2

  • Needed heat per year = 45kWh/m2 per year

  • Max Specific Heat loss 35 W/m2

To calculate heat loss you need a bit of engineering and mathematics, but I would recommend finding an engineer who has experience in calculating building heat loss. It also depends in what climate area you are living, what are your additional heat sources during the winter (solar roof, windows to the south…).

11 comments:

10timesbetter said...

underfloor heating systems can be found at the right cost if you lookm hard enough online.

Unknown said...

Make sure that the outdoor unit is protected from high winds as this will affect the efficiency of the heat absorption process. The right fencing and planting can achieve this. There are in development 'Cold Climate Heat Pumps' that have a two speed two-cylinder compressor, and a back-up booster compressor. These features allow this system to operate efficiently in temperatures as low as -9oC.

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Owen said...
This comment has been removed by the author.
Owen said...

Select the heat pumps which is energy efficient ! This is a great time to purchase a new energy efficient heating and cooling system!

demotutorial said...

Why go through all that trouble when you can easily hire contractors for Heat Pumps Grants Pass

Anonymous said...

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Unknown said...

Whatever is most efficient is key for the longrun. Im thinking about getting a heat pump in Twin Falls this weekend to replace the old. Any recommendations on what exactly to get?

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