Electrical Industry Canada Electric Heating Issue - 6

MITSUBISHI CANADA'S FS WALL MOUNTED HYPER-HEAT
PLUS HEAT PUMP EXTENDS HEATING CAPACITY TO -20°C
BY BLAKE MARCHAND
Heat pumps use air to heat refrigerant to produce heat inside the home. They are an alternative
to electric baseboard heating, natural gas, oil and propane, which has the benefit of efficiency
and a lower carbon footprint. Heat pumps have a higher level of efficiency compared to
alternative energy sources, while also providing more precise temperature control.
" The reason the FS is a breakthrough for us is because it provides 100% heat capacity at -20·°C, "
said Residential Product Manager, Geoff Sharman. Extending the temperature range a heat pump
can operate under makes it a viable solution for a primary heating source.
We spoke to Sharman to provide some insight into Mitsubishi Electric's new FS Heat Pump.
FS is a ductless heat pump system with one indoor unit to one outdoor unit. The ductless units
are ideal for a single level, open layout spaces.
How does the FS Heat Pump compare to
previous models?
" What we've done is taken the heat pump to a level where
people can use it as a primary heat source in Canada. "
" Our premium product before the FS, which was called the
FH, would put out 100% heat capacity at -15°C, " which means you can
get the full heat capacity of the unit down to an outdoor temperature of
-15°C. Essentially, " you can keep your home at 21-24°C inside even when its -15°C
outside, using only a heat pump "
" The FS is a big step for us, because we've pushed our 100% heat capacity another 5 degrees.
What that means is I have substantially more heat between -15 and -20°C. " You start losing capacity as
aſter -20°C but the heat pump will continue to operate down to -27°C.
Efficiency
" We start at about 4.5 COP (Co-efficiency of Performance) and once we get down to the -20's that's when we see our numbers drop.. " The typical
range for heat pump COP is between 2 and 3.5 COP, depending on the outdoor ambient air temperature. As the outdoor temperature drops the less
heat there is to absorb from the air, decreasing efficiency. With the new FS model, efficiency and capacity are no longer a problem. Interestingly, heat
pumps are the only heating and cooling system available on the residential market with COP higher than 1.
ELECTRICAL INDUS TRY CANADA
VOLUME 1, ISSUE 4
6

http://mitsubishielectric.ca/en/hvac/professionals/fs-series http://mitsubishielectric.ca/en/hvac http://mitsubishielectric.ca/en/hvac/professionals/fs-series

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