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Old 01-09-2018, 06:54 AM   #15
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Be aware at least on the Dometic heat pumps that the 13.5k btu units only provide heat down to about 37 degrees F ambient outdoor temperature, where the 15k btu units will provide heat down to about 30F, though at a reduced efficiency thanks to a defrost cycle system that the 13.5 units lack.
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Old 01-09-2018, 07:58 AM   #16
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Whether or not to upgrade to 15K units is another option I'm weighing.
I'm leaning toward doing it.
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Old 01-09-2018, 08:11 AM   #17
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It's always good to have options as far as heating methods. We used the heat pumps in our Baystar quite a bit. Never a problem in 4 years. Our practice was to use propane when boondocking and electricity when available. The heating from the ceiling ducts was very evenly distributed throughout the coach.

The floor will tend to get colder when using only the roof mounted heat, because the basement is not being heated.

Occasionally in very damp weather we run one unit on heat and the other on cool to dehumidify inside.

We did find the noise of the heat pump resonating through the roof structure to interfere with sleeping, so we tended to use only the front unit at night, or switch to the gas furnace when sleeping.
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Old 01-09-2018, 08:19 AM   #18
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It's always good to have options as far as heating methods. We used the heat pumps in our Baystar quite a bit. Never a problem in 4 years. Our practice was to use propane when boondocking and electricity when available. The heating from the ceiling ducts was very evenly distributed throughout the coach.

The floor will tend to get colder when using only the roof mounted heat, because the basement is not being heated.

Occasionally in very damp weather we run one unit on heat and the other on cool to dehumidify inside.

We did find the noise of the heat pump resonating through the roof structure to interfere with sleeping, so we tended to use only the front unit at night, or switch to the gas furnace when sleeping.
Does Newmar connect all units (two or three depending on model) into the same vents? Meaning, if you only run the front unit, will it come out the ducts in the bedroom/rear bath?
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Old 01-09-2018, 08:38 AM   #19
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I think they are a phenomenal option. The drawbacks are cost and noise. They are noisier than using Oasis for heat...but not that bad..and since there is common ductwork...we can run the fron heatpump and leave the one directlynover the bedroom off for a quieter sleeping experience.

Advantage...as was said before. Use the electric on the pole you’ve paid for vs burning your diesel(Oasis) or propane.

Advantage...nothing quite like redundancy. If you experience a problem with your primary heat source, you’ll have a backup plan.

Our previous 5th wheel had a single 13.5k air conditioner, and a propane furnace. It is a vulnerable spot to be in, because any single failure results in a bad camping experience. The Newmar is so redundant that a single failure is just a slight inconvenience.

Anyway...for me it’s worth the upgrade cost to have the added flexibility.
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Old 01-09-2018, 09:28 AM   #20
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Does Newmar connect all units (two or three depending on model) into the same vents? Meaning, if you only run the front unit, will it come out the ducts in the bedroom/rear bath?
My Rev is set up that way. One unit can heat or cool the whole coach if the demands aren't excessive. If you need more, you can run both units.
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Old 01-09-2018, 10:55 AM   #21
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Thanks for all of the replies.
We're going to go with the heat pump option.
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Old 01-09-2018, 11:15 AM   #22
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Thanks for all of the replies.

We're going to go with the heat pump option.

We upgraded and have been very thankful that we did. Use the HP's in the cold, and have keep cool with the two 15's (v 13.5's) when it was 115*F outside.

We also have and love the electric fireplace. It does warm the coach like any 1500 (or is it 1800) watt space heater would.
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Old 01-09-2018, 09:55 PM   #23
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I might mention guys, if you don稚 want to use your furnace and the heat pump is too noisy, head over to Wally and get yourself a plug in heater. They are only 1500 watts but after you get the coach to temperature, one heater will keep the coach comfortable and they are dead silent.

When you buy one of these heaters try to find an all metal design with no plastic, they are the safest.

Regards Mike
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Old 01-10-2018, 05:16 PM   #24
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We have the heatpumps in our Ventana. We haven't used them for heat as much as I thought we would. We actually use the fireplace the most. Its very quiet and puts out quite a bit of heat over time. Usually we'll use the furnace to warm it up and then maintain it with the fireplace. The one advantage I have seen with the heatpumps is that they heat up the coach very quickly.
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Old 01-10-2018, 05:34 PM   #25
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Thanks for all of the replies.
We're going to go with the heat pump option.
There was a post recently that mentioned that the 13.5 tended to be more problematic than the 15. Don't recall the details. Our rear 15 is acting up and going in tomorrow. Believe it to be original from 2005, so not a bad run.
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Old 01-11-2018, 06:25 AM   #26
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Although somewhat on topic with heating the coach what do you guys think about the fireplace option as a heat source?

I know it is electric too but I believe there isn't that 40 degree cutoff like the heat pumps. Not sure how much heat comes out and whether or not it really heats the coach without the furnace on but I don't really know. Anyone use the fireplace for heating the coach as opposed to the heat pumps or furnace or as a supplement to either one?
My VT came with heat pumps which we have used once or twice in a year.

Our experience has been the fireplace along with a space heater in the back bathroom are sufficient down to about 40*. We use the Oasis furnace below that since the heat pumps don't work well below 40*. We use the fireplace/space heater as a supplement depending on conditions. The fireplace alone struggles in really cold temps.
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