How Much Money Will I Save With a Ductless Heat Pump?




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There are many factors to look at when you want to see how much money you will save with a ductless heat pump. It is almost impossible to predict exactly how much, but here is a simple formula to follow that will give you a minimal energy savings percentage.

We need to start with your current heating system in order to figure out how much money you will save. Below are two factors you need to know.

1. How are you heating your home? Is it electric baseboards, oil, propane, natural gas, wood?
2. How much is it costing you per unit of electricity (energy)?

You should also know that your energy consumption in NB Canada is broken down in 3 categories. According to NB strength, 60% being used for heating your home, 20% for lighting and appliances and 20% for domestic hot water use.

For example, if you have electric heat – your system is 100% efficient, which method that for every dollar of input, you receive one dollar of output (usable energy).

How to determine the heat loss of your home? There are software’s obtainable, or you can contact an HVAC contractor that is AHRI certified to do this, but as a good rule of thumb pending the construction and the age of your home 3.415 watts per cubic feet is a safe bet.

So now let’s figure out the heat loss of this 1,000 square foot home:
(Square footage X Watts X ceiling height = Heat Loss in btu’s per hour)
1,000 X 3.415 X 8 = 27,320 btu’s per hour

The Mitsubishi MSZ-FE18NA has a heating range (output rating) of 7,500btu to 29,700btu of output)

The Mitsubishi MSZ-FE18NA has a heating energy (input rating) of (520Watts to 2420Watts per hour) there are 1000Watts in 1Kw of energy.

We are ready to figure out the energy savings.

Current home with electric baseboard heating with a heat loss of 27,320 btu’s per hour with $0.098 cents per KW hour. There are 3415 btu’s in 1 KW of electricity. 27,320 / 3415 = 8 KW hour to heat this home

Electric baseboard home: 27,320btu (8Kw) X $0.098 X 24hours X 30 days = $564.48 cent to heat this home.

Same home with a ductless mini divided heat pump:

Mitsubishi MSZ-FE18NA at max energy rating input of 2.4Kw (which provides 8Kw of energy output) X $0.098 X 24hours X 30 days = $169.34

The reason I like to use this example is that it is very simple and easy to figure out the max amount of energy your unit will cost you per month already though these conditions are never likely to happen. At these extremes, you can easily shave 30% off the cost of heating your home. The heat loss of the home will fluctuate with the outdoor temperatures and so will the energy input and output of your ductless mini divided heat pump.




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