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Old 04-04-2013, 10:55 PM   #1
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Heat Pump vs Straight Cool?


Ok,

Just bought a house in SW Florida (North Port, FL...North of Fort Myers). I need to replace the 11 year old Rheem Heat Pump. I called in one company and the tech is trying to advise me to buy a straight cool unit with heat strips vs a heat pump. He's telling me that the average temperature there would not warrant a heat pump and I would benefit from the lesser priced straight cool, which also has a higher SEER rating. I'm not 100% sold..so I wanted some others thoughts.

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Old 04-04-2013, 11:25 PM   #2
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Heat Pump vs Straight Cool?


electric heat is the most expensive heat there is, at least with a heat pump you're using the refrigerant that is in the system to heat your home. unless that refrigerant leaks out that is yours, paid for once. All you pay for is the motors running.

how often or how many weeks or months a year do you use heat? How often during that period did you need secondary (emergency) heat to assist the heat pump?

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Old 04-04-2013, 11:33 PM   #3
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Heat Pump vs Straight Cool?


Doc,

According to the HVAC guy..the number of days that heat would be needed..and using the heat strip (COP of 1), would be offset and more by the increased efficiency of the longer A/C season.
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Old 04-05-2013, 01:08 AM   #4
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Heat Pump vs Straight Cool?


[XLS]
Heating Fuel Comparision Calculator - EIA

http://www.eia.gov/electricity/month...?t=epmt_5_06_a

http://www.warmair.com/html/fuel_cost_comparisons.htm

I posted a graph once on this site but I can't seem to find it now, but electricity is approximately 3x's as expensive than other heating fuels.

All systems have a seer rating, if you get a high enough one you can cut down on the electrical consumption as motors use less energy but not your electric rate that you pay from your service provider.
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Old 04-05-2013, 04:38 AM   #5
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Heat Pump vs Straight Cool?


Stay with a heat pump. Electric resistance heat only will cost you as much as 3 times more to heat your home.
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Old 04-05-2013, 08:08 AM   #6
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Heat Pump vs Straight Cool?


sounds like the guy is trying to steer you away from a heat pump.
maybe he dosent like to install them. ask him how many he has installed.
get 3 quotes.
stay with the heat pump.
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Old 04-05-2013, 11:01 AM   #7
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Heat Pump vs Straight Cool?


Stay with heat pump and if your contractor doesnt like them, find one that does. The price difference between buying a heat pump versus a straight cool unit is very small, you will make up for that in heat savings quite fast.
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Old 04-05-2013, 11:27 AM   #8
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Heat Pump vs Straight Cool?


OP, you have to run the calculations. The straight A/C has a higher SEER, meaning you will save money on your summer cooling bill. Say the straight-A/C summer savings are $100/yr and the winter expenses of strip heat are an extra $75/yr: you'd come out $25 ahead with straight A/C. Not to mention the lower cost of installation.

But maybe the straight A/C only saves $50 per summer and the winter strip heat costs an extra $200 per winter, so you lose. Without running the numbers, there's no way to tell which way you should go. I recommend using this:

www.eia.gov/neic/experts/heatcalc.xls

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