heat pump thermostat question

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snipped-for-privacy@worldnet.att.net wrote:

be using 42 amp hours. Lets look at your 5 ton heat pump. At the outdoor temperature of say 30 F - most heat pumps will produce *about* 75% of their rated capacity [i.e. 44,475 btu / h] and the compressor will draw *about* 75% of its rated running load, [all approximates without knowing the brand and spec.] - which equates to about 34 amps. So lets re-cap - 34,130 btu/h for 42 amp hours of cost [vs] 44,474 btu/ h for 34 amp hours of cost. Hmmm...... if both are in operation, your delivery of heat would be 78,604 btu / h. If you cut off the heat pump, your gonna be shy when you need it the most.
Why don't you just leave it alone, change your air filter often, and keep the outdoor unit coil clean. Call an HVAC pro who's rated for Heat Pump maintenance, be sure the charge is up, pay his bill, and pay the utility bill smiling. All the while keeping you family warm.
--
Zyp



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= 42 amps. So for your 34,130 btu / h -

<sigh> Thats just too damn easy.... and he might have to use a crowbar to pry his wallet open.
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Zyp, didn't you mean 24 amps on the compressor draw, rather than the 34 you said. Figure a 12 SEER00watts/ton, so even 24 is probably higher than it actually draws. Agree with what you are saying, tho. Everyone else that has posted here has tried to explain it in various ways, but the OP does not seem to understand. Oh well-it's his unit and his money, so he is free to use both as he chooses. Larry
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Larry, I don't know about the 5 ton, but a 4 ton scroll, 14 SEER hp with R-410a refrigerant actually draws 12.8 - 13.2 amps, and the X-13 fan motor doesn't draw much more than a 100 watt light bulb. Compare that to the 42 amps from 15kw strips.
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Noon-Air wrote:

Well there ya go 14 SEER = $$$$ savings. The figures I was refering to were estimates. It is likely that @ 6 amps per horsepower per ton on 240v, the 24 figure plus the outdoor fan seems more correct. Most 4 ton units have a 50 amp circuit [old school] but that's 50% over the actual rated draw. I have noticed the new equipment is $aving a considerable amount on the draw compared to old school equipment.
Heat pumps are efficient, just not warm like gas fired.
--
Zyp



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No fair, you're doing ONJ's homework ;-)
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