I'm thinking of installing a 1500 watt, 120 volt, electric, wall mount heater in my 30 foot, 30 amp, class A. I know this thing isn't going to keep us warm when it's 20 degrees out but do you think it would be enough on those chilly nights when it gets down to 45? I have a place to mount it that's deep enough and out of the way. I'd "share" the A/C 20 amp breaker between the A/C and this heater. Only one would ever be on at a time and I'd run 12/2, with ground, hard wired, from the breaker to the heater. We have a little tabletop heater now that does "ok" but we have to store it away when not in use and when it's "in use" it's on the table. Looks like this one would draw about 12.5 amps and heat with 5000 or so BTU.

Most all small space heaters are about like that. In the right location it should do okay. 45* isn't that low. We've been down to 29* and our space heater did fine. If it were me I'd wire in a separate outlet for it. Hard wire the heater to it and put a male receptacle in your docking area or wherever is convenient.Then run a separate 120V extension cord to the power pole.

Yes, I think it will do fine. In the event that you need more, just run the propane furnace until it's up to temp and them the electric should do a pretty good job keeping it warm.

Below 40 it will probably run near continuous. May still need the furnace but will reduce run time.

We found that the LP gas furnaces really use a lot of gas when running in cold weather. During cool and cold weather we carry a 1500 watt Walmart electric heaters that has a built in thermostat. That way it shuts itself down for a couple of minutes if the room temperature goes above the set point temperature It works great in our 30 foot Work and Play toy hauling trailer with 30 amp service.

The off the wall heaters plug and mount right to the wall outlet.I can fit it to a few outlets in the RV like the one under the dinnette that will warm the toes.May run a dedicated outlet though.Like my portable though I wanted 3 wattage setting and an on/off t stat..My current portable is like a milkhouse style.400 watt900 watt1500 wattFan onlyAnd t stat that goes on /off.But a project for another day...https://www.homedepot.com/p/Seabreeze-Off-the-Wall-1500-Watt-Electric-Portable-Heater-SF12ST/202034583

1500 watt heater. Enough? | Good Sam Community

westend
Explorer
Mar 13, 2018
After I finished insulating and paneling my 22' trailer, a 1500W electric heater raised inside temp from the 25f ambient to 75f in 30 minutes.
Isaac-1
Explorer
Mar 13, 2018
I think you will be surprised how much heat it puts out in a confined space like an RV. I had a small 1500 watt cube heater in my motorhome last winter to keep things above freezing, and even when the temperature dropped below freezing outside, the cube heater set on low kept the interior temperatures in the upper 50's
lawrosa
Explorer
Mar 13, 2018
The off the wall heaters plug and mount right to the wall outlet.

I can fit it to a few outlets in the RV like the one under the dinnette that will warm the toes.

May run a dedicated outlet though.

Like my portable though I wanted 3 wattage setting and an on/off t stat..

My current portable is like a milkhouse style.

400 watt
900 watt
1500 watt
Fan only
And t stat that goes on /off.

But a project for another day...

https://www.homedepot.com/p/Seabreeze-Off-the-Wall-1500-Watt-Electric-Portable-Heater-SF12ST/202034583
jamesroadking
Explorer
Mar 13, 2018
We found that the LP gas furnaces really use a lot of gas when running in cold weather. During cool and cold weather we carry a 1500 watt Walmart electric heaters that has a built in thermostat. That way it shuts itself down for a couple of minutes if the room temperature goes above the set point temperature It works great in our 30 foot Work and Play toy hauling trailer with 30 amp service.
time2roll
Nomad
Mar 13, 2018
Below 40 it will probably run near continuous. May still need the furnace but will reduce run time.
ScottG
Nomad
Mar 13, 2018
Yes, I think it will do fine. In the event that you need more, just run the propane furnace until it's up to temp and them the electric should do a pretty good job keeping it warm.
goducks10
Explorer
Mar 13, 2018
Most all small space heaters are about like that. In the right location it should do okay. 45* isn't that low. We've been down to 29* and our space heater did fine.
If it were me I'd wire in a separate outlet for it. Hard wire the heater to it and put a male receptacle in your docking area or wherever is convenient.
Then run a separate 120V extension cord to the power pole.

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1500 watt heater. Enough?

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