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Old 01-06-2016, 09:21 PM   #15
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Is there an automatic setting?
If so use it.
It will automatically run the heat pump until it is too cold then switch to propane furnace.


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Old 01-06-2016, 09:29 PM   #16
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Like Kelvin (KJRitchie), I put it in Heat Pump mode only when I am away. Too noisy when I am in the trailer.

When in furnace mode, I use a portable electric heater (Vornado DVTH) to supplement it.

When camping in cold weather, the furnace brings the inside up to temperature faster than the heat pump. You can also run the furnace when traveling, although I have not done so and can't comment on that practice.

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Old 01-07-2016, 05:09 AM   #17
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It is noisy, by warm.
When I am plugged up at a campground, heat pump costs no more.
If I run furnace, I'm using my propane that I had to buy.
For this reason I use water heater and refrigerator when on shore power too.


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Old 01-07-2016, 05:26 AM   #18
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I use the furnace for any temp below 50 degrees F, above that I use the HP. Heat Pumps are simply taking outside air and "running" it by an electric heat strip and blowing it into the trailer. They are not designed to be efficient below 45 degrees F. Aside from the propane use I prefer the furnace.
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Old 01-07-2016, 05:28 AM   #19
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But the heat pump will still warm down into the 30's until it becomes useless-


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Old 01-07-2016, 08:16 AM   #20
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Quote:
Originally Posted by paiceman View Post
I use the furnace for any temp below 50 degrees F, above that I use the HP. Heat Pumps are simply taking outside air and "running" it by an electric heat strip and blowing it into the trailer. They are not designed to be efficient below 45 degrees F. Aside from the propane use I prefer the furnace.
Not quite. They take inside air and blow it over the evaporator (when A/C is used) which is now the condenser, in HP mode. The unit effectively runs backward, relative to the flow of refrigerant....thus absorbs heat from the outside air....down to about 38* with my particular unit. It then will switch to furnace operation automatically, if you program the CCC properly.

Read here: http://www.achrnews.com/articles/928...e-of-operation
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Old 01-07-2016, 08:42 AM   #21
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Because I have a split system A/C

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Originally Posted by cazual6 View Post
Why is that exactly?
Look at my other threads for details. This system uses very little current (6 amps or so) and is very quiet.
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Old 01-07-2016, 08:49 AM   #22
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Not sure what is in my profile

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Dear BambiTex - looked at your profile... Unless you've replaced the units, wouldn't you have heat strips rather than a heat pump?

My first - a 2005 - had heat strips (electric heating elements same as a space heater) rather than a heat pump (reversible a/c which pumps heat OUT in summer and IN in winter.) Even as recently as 10 years ago heat pumps were rare on trailers - but the technology has improved greatly since then.

Paula
I installed a residential "inverter style" split system air conditioner with the compressor mounted on the tongue. It is also a heat pump (reversible A/C) and runs very quietly and uses about 6 amps. Very pleased with it. Kept the trailer cozy warm in the Grand Canyon with outside temps in the 30's.
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Old 01-07-2016, 10:23 AM   #23
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Quote:
Originally Posted by BambiTex View Post
Look at my other threads for details. This system uses very little current (6 amps or so) and is very quiet.
Posting a comment about how quiet your heat pump is without explaining that you have a non-standard set-up is misleading and not at all helpful. Expecting people to pour through your "other threads" to get the background is unrealistic.
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Old 01-07-2016, 10:39 AM   #24
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Fair enough

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Originally Posted by AnnArborBob View Post
Posting a comment about how quiet your heat pump is without explaining that you have a non-standard set-up is misleading and not at all helpful. Expecting people to pour through your "other threads" to get the background is unrealistic.
Here is the thread:
http://www.airforums.com/forums/f427...-c-138831.html
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Old 01-09-2016, 02:04 PM   #25
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Wow, lots of ideas. I say if you are on shore cord, use Heat Pump down to 40. You need to try it and make your own decision on cost v/s noise.
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Old 01-09-2016, 02:36 PM   #26
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Ditto.
Agreed.
Amen.
And what he said.


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Old 01-09-2016, 04:16 PM   #27
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When to use between Heatpump and Furnance

Quote:
Originally Posted by m.hony View Post
It is noisy, by warm.
When I am plugged up at a campground, heat pump costs no more.
If I run furnace, I'm using my propane that I had to buy.
For this reason I use water heater and refrigerator when on shore power too.


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Old 01-09-2016, 06:19 PM   #28
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FWIW - we use two portable electric heaters (one up front, the other in the bedroom) which we set at medium. They are fine to just above freezing at which point we use the furnace.
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