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    I would have guessed the same thing. This one...

    I would have guessed the same thing. This one only does it going into defrost. I guess I'll wait and see if it gets quieter when the temp goes back above 30's
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    Heat Pump defrost noise change with temp?

    I am new to having a heat pump, this is my first winter. Last night was the first night below 20f outside that I was using the heat pump. The heat pump makes a growning sound for a few seconds when...
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    Yes, both the HP and the oil furnace where...

    Yes, both the HP and the oil furnace where installed by licencensed pro's but two different companies. The HP was installed by a friend that has his own company and I am very confident in his...
  4. The heat pump was a professional install by a...

    The heat pump was a professional install by a licensed HVAC contractor but unfortunatly he is a one man business and on vacation till Tues. The oil furnace was a previous install by another...
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    Thanks again for all the replys. I made another...

    Thanks again for all the replys. I made another post in this section on a different subject regarding my heat pump freezing up titled "heat pump iced up/ interesting problem hybrid problem w/oil...
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    I just looked at an online calculator and...

    I just looked at an online calculator and compared the price per BTU for my 80 percent eff oil furnace vs electric resistance heating and at the prices I'm paying they come out very close. Does this...
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    Does that $3.16 per 100k btu change as the...

    Does that $3.16 per 100k btu change as the outdoor temp drops?

    Its a 3.5 ton heat pump and the furnace is 112,00 btu 80% forced air
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    Thanks, if that turns out to be the case the new...

    Thanks, if that turns out to be the case the new heat pump will probably save me over $1,500 per year and that doesn't included the savings in the summer months over my 10 seer air conditioner I...
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    If it makes a difference I will also add that I...

    If it makes a difference I will also add that I only have a single speed blower on my forced air system.
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    It looks like I have a cop of 3.64@47F and...

    It looks like I have a cop of 3.64@47F and 2.6@17F for my furnace and ecoil. I'm paying about $3.80 a gallon for oil for my 80% efficent furnace and if I read my electric bill correct I'm paying...
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    Fuel cost calculations?

    Can someone tell me how to do the calculations? I have a 14.5 seer heatpump with an 80 percent efficent oil furnace. I have been wondering the same thing but don't know how to do the numbers. I...
  12. Heat pump iced up. Interesting hybrid problem w/oil burner.

    I recently installed a Rheem heat pump to replace my existing AC unit. I had it mated to my existing Lenox oil furnace(about 8years old).

    The other night I went out and noticed my heat pump was a...
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