P
Paul M. Eldridge
- Jan 1, 1970
- 0
Hi Mike,
The two acronyms most frequently used when discussing heat pumps are
COP and HSPF.
COP stands for "coefficient of performance" and, simply put, it's a
measure of the amount of energy provided in relation to what is
consumed by its operation (higher numbers are better). So, for
example, if a heat pump has a COP of 3, it means that three kWh of
heat are transferred into the living space for every one kWh of
electricity consumed.
The COP of an air source heat pump will vary according to the unit's
design (like cars, some are inherently more fuel efficient than
others) and the outdoor operating temperature (heat pump performance
degrades in colder weather). By comparison, electric resistance heat
has a COP of 1.0 -- 1 kWh of electricity equals 1 kWh of heat.
HSPF is short for "heating season performance factor" and represents
the amount of heat supplied by the heat pump over the course of the
heating season (in BTU), divided by the amount of power consumed
during this timeframe (in Watt-hours). Once again, higher numbers are
better. The current minimum HSPF rating for heat pumps is 7.7; that
means every heat pump must provide a minimum of 7.7 BTU for every one
Watt-hour consumed. When comparing the relative efficiency of two or
more models, use this number.
To convert HSPF to COP, divide the HSPF rating by 3.4. For example, a
heat pump with a HSPF rating of 8.5 would have a "seasonal COP" of
2.5. In the case of the above-mentioned Friedrich M18YF, a HSPF
rating of 11.0 translates to a seasonal COP of a 3.2.
Once you convert HSPF to COP, you can easily calculate the effective
cost of each kWh of heat provided. If, for example, you pay $0.10 per
kWh for electricity and the heat pump has a seasonal COP of 2.5, your
effective cost for each kWh of heat supplied is just $0.04.
I can't honestly tell you what you could expect to pay for this
particular model, but hopefully someone else can. I'm guessing the
installed cost might be in the range of $3,000.00 to $4,000.00, but
that's just a shot in the dark. Sorry.
Cheers,
Paul
Paul would you explain the acronyms? How much is the Friedrich M18YF and
how much would it cost to install it.?
The two acronyms most frequently used when discussing heat pumps are
COP and HSPF.
COP stands for "coefficient of performance" and, simply put, it's a
measure of the amount of energy provided in relation to what is
consumed by its operation (higher numbers are better). So, for
example, if a heat pump has a COP of 3, it means that three kWh of
heat are transferred into the living space for every one kWh of
electricity consumed.
The COP of an air source heat pump will vary according to the unit's
design (like cars, some are inherently more fuel efficient than
others) and the outdoor operating temperature (heat pump performance
degrades in colder weather). By comparison, electric resistance heat
has a COP of 1.0 -- 1 kWh of electricity equals 1 kWh of heat.
HSPF is short for "heating season performance factor" and represents
the amount of heat supplied by the heat pump over the course of the
heating season (in BTU), divided by the amount of power consumed
during this timeframe (in Watt-hours). Once again, higher numbers are
better. The current minimum HSPF rating for heat pumps is 7.7; that
means every heat pump must provide a minimum of 7.7 BTU for every one
Watt-hour consumed. When comparing the relative efficiency of two or
more models, use this number.
To convert HSPF to COP, divide the HSPF rating by 3.4. For example, a
heat pump with a HSPF rating of 8.5 would have a "seasonal COP" of
2.5. In the case of the above-mentioned Friedrich M18YF, a HSPF
rating of 11.0 translates to a seasonal COP of a 3.2.
Once you convert HSPF to COP, you can easily calculate the effective
cost of each kWh of heat provided. If, for example, you pay $0.10 per
kWh for electricity and the heat pump has a seasonal COP of 2.5, your
effective cost for each kWh of heat supplied is just $0.04.
I can't honestly tell you what you could expect to pay for this
particular model, but hopefully someone else can. I'm guessing the
installed cost might be in the range of $3,000.00 to $4,000.00, but
that's just a shot in the dark. Sorry.
Cheers,
Paul