heat pump with gas furnace

Posted by Dan on October 22, 2006, 10:34 pm

I live in Ohio. I have a duel-fuel system, heat-pump and gas furnace.
I want to know how to get the best energy-efficiency out of the system.

Do I turn off the heat pump and only use gas furnace when the
temperature falls below a certain degree? Is is best to leave the
thermostat at a constant temperature or should I buy a programmable
thermostat to turn down the heat at night? Are there any specific ways

to use the system for the best performance? I have heard many
differing opinions and just need some clarification.

Thanks,
Dan

Posted by daytona on October 22, 2006, 11:25 pm

That is what the Yuppies now call a hybrid unit. The saving for your area
are only in the fall and spring....winter brings the secondary heat on a
majority of the time.Some of the newer digital t-stats have the ability to
shut down the ht pump and only run the secondary heat at a set temp
(consumers choice)

>I live in Ohio. I have a duel-fuel system, heat-pump and gas furnace.
> I want to know how to get the best energy-efficiency out of the system.
> Do I turn off the heat pump and only use gas furnace when the
> temperature falls below a certain degree? Is is best to leave the
> thermostat at a constant temperature or should I buy a programmable
> thermostat to turn down the heat at night? Are there any specific ways
> to use the system for the best performance? I have heard many
> differing opinions and just need some clarification.
> Thanks,
> Dan
>

Posted by Bubba on October 23, 2006, 7:34 am

Im going to disagree. A properly sized heat pump in the Ohio Valley
area does very well in winter. I have one. Last year at 7 degrees
outside several times I still had mine running. Yes, it runs a lot
more and no its not able to bring the temp up but it does a good job
of maintaining temp. The gas heat does come on but not all that
noticeable. Your gas useage goes down but the electric jumps up. It
saves money at current rates but not enough to go purchase that new
car or boat. :-)
Bubba

wrote:

>That is what the Yuppies now call a hybrid unit. The saving for your area
>are only in the fall and spring....winter brings the secondary heat on a
>majority of the time.Some of the newer digital t-stats have the ability to
>shut down the ht pump and only run the secondary heat at a set temp
>(consumers choice)

>>I live in Ohio. I have a duel-fuel system, heat-pump and gas furnace.
>> I want to know how to get the best energy-efficiency out of the system.
>> Do I turn off the heat pump and only use gas furnace when the
>> temperature falls below a certain degree? Is is best to leave the
>> thermostat at a constant temperature or should I buy a programmable
>> thermostat to turn down the heat at night? Are there any specific ways
>> to use the system for the best performance? I have heard many
>> differing opinions and just need some clarification.
>> Thanks,
>> Dan
>>

Posted by Nathan In Montana on October 23, 2006, 9:39 am

> Yes, it runs a lot
> more and no its not able to bring the temp up

at which point the efficiency is lost thus defeating its own purpose. i
suppose you could run both, but to me it seems pointless.

--
Nathan in Montana
http://ConcealedCarryForum.com
http://1911Tech.com
http://GlockCarry.com

Posted by Noon-Air on October 23, 2006, 9:49 am

>> Yes, it runs a lot
>> more and no its not able to bring the temp up

> at which point the efficiency is lost thus defeating its own purpose. i
> suppose you could run both, but to me it seems pointless.

You *DO NOT* want to run both the heat pump and gas furnace at the same
time. You run the heat pump down to about 35 degrees, then heat pump is
taken out of the loop, and the furnace comes on line.

Think about *WHY* you don't want both to run at the same time......

(HINT Think "head pressure")

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