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Old 01-05-2016, 02:45 PM   #1
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When to use between Heatpump and Furnance

I see the Heat Pump feature on my Dometic Control along with Furnace. I was told to use the Furnace to keep warm, which I have been.

So when would I use the Heat pump?
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Old 01-05-2016, 02:55 PM   #2
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If you are hooked up to Shore Power you can use the Heat Pump for free (as opposed to burning propane in the furnace). In very cold conditions, the heat pump will be ineffective and you will need to use the furnace even if connected to shore power.
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Old 01-05-2016, 03:42 PM   #3
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I find the propane furnace not as noisy to run and it seems to heat up the trailer faster then cycles off. I rarely have used the heat pump. I run it a little every season to verify its working. I would use it in cooler weather if, say I was leaving for a couple of hours and upon return the trailer would still be warm, then switch over to furnace. I least I wouldn't have used propane while away.

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Old 01-05-2016, 03:45 PM   #4
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In my case, heat pump is very quiet (almost silent) and does not cycle much.
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Old 01-05-2016, 03:55 PM   #5
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I don't know what the newer ducted-AC systems are like, but on non-ducted modern Airstreams with the heat pump, the heatpump noise is much more intrusive than the furnace IMHO.
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Old 01-05-2016, 03:59 PM   #6
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Originally Posted by DKB_SATX View Post
I don't know what the newer ducted-AC systems are like, but on non-ducted modern Airstreams with the heat pump, the heatpump noise is much more intrusive than the furnace IMHO.
Neither one bothers me.
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Old 01-05-2016, 04:02 PM   #7
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heatpump - above 35 F and someone else is paying for the electricity
furnace - no hookups, below 35 or just when the noise of the HP is driving you nuts

The furnace is a propane pig. My Avion has a catalytic heater which is more efficient (no venting tho' so needs to be inspected and a CO detector is a must have).

There are VERY cute propane fireplaces which rumor has, will heat the Airstream to S. Florida temperatures and use little propane. Link on edit if I'm fast enough.

http://www.dickinsonmarine.com/

select marine fireplace heater (I like the smaller 9000 - and the EB even has a hole in it's head for the chimney - the ceiling vent in the bedroom. But do I want a fireplace in the bedroom?) Might even be able to modify the glass in the rear HATCH for the chimney.... no aluminum will be harmed in the installation of this fireplace?)

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Old 01-05-2016, 11:22 PM   #8
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Quote:
Originally Posted by BambiTex View Post
In my case, heat pump is very quiet (almost silent) and does not cycle much.
Why is that exactly?
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Old 01-05-2016, 11:45 PM   #9
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The heat pump is way too loud so we use a couple of ceramic electric heaters. We sit one on the stove and it's usually enough to keep it comfortable. When it's really cold, we plug the second one on in the bathroom and leave the door open.
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Old 01-06-2016, 12:07 AM   #10
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Quote:
Originally Posted by BambiTex View Post
In my case, heat pump is very quiet (almost silent) and does not cycle much.
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.

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Old 01-06-2016, 11:59 AM   #11
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Use the heat pump to keep warm above 40 degrees.
Use the furnace below that.
My thermostat has an "auto" setting so that this happens without being doing anything.
Question is: Does your trailer have a heat pump? The thermostats may all have the setting.
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Old 01-06-2016, 12:52 PM   #12
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We use the heat pump above 35 degrees. It does a good job. As far as the heat pump noise, when we are in, we set the fan to run continuously. We seem to get accustomed to the fan noise, and the wife likes the noise when sleeping. To us, the furnace makes more noise. We think it's a cost advantage to use the electricity to heat rather than the propane. We will occasionally use a ceramic space heater too. I think it's important to use the propane furnace at below freezing temps to keep warm air circulating around the water and holding tanks.
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Old 01-06-2016, 12:57 PM   #13
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I find them both noisy and I use the catalytic heater whenever possible. I just set the rear fantastic to blow out slowly and allow air in through the through the front vent.
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Old 01-06-2016, 08:28 PM   #14
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Quote:
Originally Posted by m.hony View Post
Use the heat pump to keep warm above 40 degrees.
Use the furnace below that.
My thermostat has an "auto" setting so that this happens without being doing anything.
Question is: Does your trailer have a heat pump? The thermostats may all have the setting.
I have Dometic which has all the functions on it. I just scroll through the mode to get to HEAT PUMP or FURNACE.
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