My local Carrier dealer is coming out next week to give me a quote on adding
a heat pump to my current system for a dual source setup. I wanted to crunch
some numbers in the mean time to find my break even point or how many years
until I can see a savings.
Here is my info. Let me know if I'm missing something.
House is 14 years old, 3,000 sq.ft., tightly sealed with good insulation and
is located in SW PA.
I have a 14 year old Carrier 90%+ propane furnace (new heat exchanger
installed last year under warranty) with whole house AC.
Propane is running $2.29 a gallon and electricity is 4.624 cents per KWH.
Furnace, water heater, clothes dryer and stove are all propane. Current
usage is around 1050 gallons per year.
Am I on the right track and is this a smart move?
Can anyone help me estimate the savings.
"Jeff A. Farrar" <jefffarrar.at.yahoo.com> wrote in message
$2.29 LP burning at 90% will cost $2.77 per 100K into the home.
4.624 cent Electric (KWH) will cost $1.35 per 100K into the home.
Pretty clear to me... unless you like spending an extra 105% to heat your
= = = = = = =
HP operation... (based on your electric rate of .04624/kwh)
ODT above 47 degrees at a COP of 3.5 will cost $0.3869 per 100K into home.
(86% savings, will heat your home without back-up heat)
ODT down to 0 degrees at a COP of 1.6 will cost $0.8463 per 100K into home.
(69% savings, however, this will need back-up electric heat strips to
supplement the HP)
Any combination of the above with straight electric heat strips is going to
be cheaper, since your straight electric is cheaper than LP already!
= = = = = = =
Yearly savings would depend on your particular area's climate.
No, I'm not going to dig up that info and do the calcs for free!
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