be using 42 amp hours. Lets look at your 5 ton heat pump. At the outdoor
temperature of say 30º 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
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, 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
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
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.
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