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  1. Again I am very appreciative of the information...

    Again I am very appreciative of the information that has been so freely given. I think that I am beginning to get the picture. I could multiply my COPs by the converted HSPF factor as suggested by...
  2. TD, Yes, sorry I forgot to say that I had...

    TD,

    Yes, sorry I forgot to say that I had actually watched the frost steadily build up on the coils prior to initiation of a defrost cycle.

    Calum
  3. I very much appreciate the replys to my inquiry....

    I very much appreciate the replys to my inquiry. In response to Tigerdune's question. Yes I have seen the HP go through defrost cycles. Today with a relative humidity of 72% and temperature of 32...
  4. Effect of HP Defrost Cycles on Economic Balance Point

    I am a home owner with a dual fuel (natural gas and heat pump) system that was installed this fall. Thanks to guidance from this forum I was able to obtain COP data for my heat pump/indoor...
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    My sincere thanks to all for the information and...

    My sincere thanks to all for the information and for helping my understanding.
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    So Sorry. I should have addressed that question...

    So Sorry. I should have addressed that question to mchild.
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    I very much appreciate the help with this. Using...

    I very much appreciate the help with this. Using these figures does actually impact where I will set my balance point. The economic balance point at my current gas and electric rates appears to be 37...
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    American Standard Heat Pump COP's

    I am a home owner with a recently installed dual fuel (natural gas and heat pump) system. I have a thermostat that allows me to adjust the balance point. As the weather has been getting cooler here...
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