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Old 11-30-2011, 05:15 PM   #1
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Why a heat pump?

Why would I want to use the heat pump to warm my Airstream when it has a much quieter and more efficient furnace?
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Old 11-30-2011, 05:31 PM   #2
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The heat pump is more efficient. If you are in a full-hookup site that does not charge extra for electricity, the heat is free.

But it is the noise from hell. We never use it. Instead we bought the Dyson Hot space heater, and it is one of the luxuries of our trailer. Wonderful, consistent heat that stays exactly where you set the thermostat. Set it under the dinette aimed to the back, warms our feet and provides perfect heat quality through the night.

doug k
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Old 11-30-2011, 05:42 PM   #3
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The heat pump is more efficient. If you are in a full-hookup site that does not charge extra for electricity, the heat is free.

But it is the noise from hell. We never use it. Instead we bought the Dyson Hot space heater, and it is one of the luxuries of our trailer. Wonderful, consistent heat that stays exactly where you set the thermostat. Set it under the dinette aimed to the back, warms our feet and provides perfect heat quality through the night.

doug k
I figured that electricity was free, so use the heat pump. I tried it for one night, and changed back to the furnace by 3:00 am. The thermostat does not seem to have any hysteresis, so the heat pump would run for about 5 minutes, kick off, and then start again after about 8 minutes. The furnace seems to cycle a lot less often, even though it is using the same thermostat.

Thanks for the suggestion on the space heater!
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Old 11-30-2011, 05:55 PM   #4
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Quote:
Originally Posted by easplund View Post
Why would I want to use the heat pump to warm my Airstream when it has a much quieter and more efficient furnace?
Interesting,LPG tanks are off, so thought I'd ck the Heat Pump.

I just set it @70* on our 1350? Penguin 2 1/2 hrs ago. 37* inside.
It's 34* outside tonite and very windy
50.1* inside front & 54 rear @ 6:45PM.....not bad?

Check again later.....

Bob
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Old 11-30-2011, 05:59 PM   #5
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I found that the heat pump warmed things up quite well, but it was awfully noisy.
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Old 11-30-2011, 07:16 PM   #6
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Yup, it's noisy as heck (like the AC)...we use a small electric heater with a thermostat when we need heat and have electricity...it doesn't take much to heat up a Bambi and keep it nice all night long.
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Old 11-30-2011, 08:46 PM   #7
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Quote:
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Why would I want to use the heat pump to warm my Airstream when it has a much quieter and more efficient furnace?
My heat pump is quieter than my furnace. The furnace is LOUD!
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Old 11-30-2011, 09:09 PM   #8
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!0:00pm ccc 72.

Inside front...60.9

rear.......71.1

Outside....33.1

Bob
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Old 11-30-2011, 09:16 PM   #9
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!0:00pm ccc 72.

Inside front...60.9

rear.......71.1

Outside....33.1

Bob
At those outside temps it's probably using the aux heat (if it has it) rather than the heat pump... most of them stop trying when it gets close to freezing, since that makes the outside fins ice up QUICKLY and there's less heat to be gathered from the outside air to warm them.
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Old 11-30-2011, 09:28 PM   #10
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It's pretty stable at 69-70, really surprised it got that warm with ccc that ccc setting.

Time to shut down now..

Bob
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Old 11-30-2011, 09:55 PM   #11
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Just like running the A/C, no better and no worse than the furnace fan IMHO. On hook-ups it works very well down to high 30's low 40s and can keep the inside at a comfortable temp, maybe 71 or so. As it gets colder outside it does not work as well and eventually as it gets too cold and can't maintain temp, the digital thermostat switches over to the furnace. So we use it all the time when chilly and when hooked up.

Given a choice, I'd get the heat pump over straight A/C every time. I heard the valve to reverse the refrigerant flow used to get stuck but we never had a problem.
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Old 11-30-2011, 10:01 PM   #12
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My observations after reading some of the above comments.

Dometic Penguins come in cool, cool with heat strip, or heat pump. I believe the comment regarding heat pumps with heat strips is referring to residential heat pumps.

Also why would a heat pump in heat mode be any louder than the unit in cool mode?

Also why would one run a heat pump when the outside temperature is below 40?
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Old 11-30-2011, 10:26 PM   #13
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Just like running the A/C, no better and no worse than the furnace fan IMHO. On hook-ups it works very well down to high 30's low 40s and can keep the inside at a comfortable temp, maybe 71 or so. As it gets colder outside it does not work as well and eventually as it gets too cold and can't maintain temp, the digital thermostat switches over to the furnace. So we use it all the time when chilly and when hooked up.

Given a choice, I'd get the heat pump over straight A/C every time. I heard the valve to reverse the refrigerant flow used to get stuck but we never had a problem.
My experience is the same as yours.

I've gotten used to the noise, but still have an auxiliary electric heater for the odd nook - like the darned bathroom. That is one cold seat unless I leave the door open!

I do prefer the furnace over a space heater when it's really cold. It's my understanding that the furnace will keep the tanks from freezing. A space heater wouldn't do that - except maybe if the trailer were skirted and the heater placed under it.

Paula
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Old 11-30-2011, 11:53 PM   #14
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We have used Lucy's heat pump extensively in cooler weather. We have found that as the outside temperature approaches the freezing mark, the heat pump quits working. Then we switch over to the gas furnace.

Brian
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