Electric heating

EmergencyNrse wrote:
Can you run x2 1500watt space heaters from a standard 110v shore line in the driveway or does it pull too much power?

Two heaters are going to draw 25 amps. Most 120 volt shore outlets are either 15 or 20 amps.

Can you run x2 1500watt space heaters from a standard 110v shore line in the driveway or does it pull too much power?

For a single hose heat pump,

As long as the temperature of the discharge air is colder than the temperature of the replacement air leaking in (outside air temperature), there will be some heat gain from the air.

When the temperature of the discharge air is equal to the temperature of the air leaking in, there is no heat gain from the air. The only heat gain will be from the watt hours being consumed by the motors in the heat pump. This is he essentially the same efficiency as a resistance heating unit.

If the temperature of the discharge air is warmer than the outside air temperature, the net heat added will be less than the watt hours consumed, and might even be negative.

With a two hose heat pump, discharge air temperature will almost always be colder than the inlet air temperature, however at very cold temperatures the gain is modest and may not justify the wear and tear on the heat pump.

Some heat pumps include resistance heaters to provide added heat in very cold weather.

We use a Lasko Ceramic in our Bus. Last night at 32 outside, kept our 37 footer at 65 degrees. Bought it at Walmart for $70.00. It is about 2 feet tall, 17 inches wide and 7 inches deep. It has high and low fan, heat can be set to temp and goes off when that temp is reached. We put a fan behind it and blow heat to the back. So far it keeps us comfortable. If we need aux, we can always run the furnace but choose not to unless absolutely necessary.

PM me if you need additional info. Arnold

Busskipper wrote:

pianotuna wrote:
May I ask for a link to your make and model? Thanks in advance.

rgatijnet1 wrote:

As far as the brand of mine. It is an Spt but all single and double hose portable heat pump/AC units work the same way, except a double hose unit uses outside air.
My heat pump, with the single hose draws ambient air from the RV cabin. Some of that air is passed over the condensing coil, heated, and blown back out in to the RV.

http://site.sunpentown.com/WA-9061H.1061H_manual.pdf

HEAT mode
1. When HEAT mode is selected, the ambient warm air will be recycled and utilized to heat the
area where it is required. The Exhaust Pipe must be fitted properly to exhaust the cold
air outdoors.
2. Continuous drain is mandatory when unit operates in heat mode.
3. The working temperature range for heating function is 45~77°F/7~25°C. If ambient
temperature is outside this range, the unit may not work properly.

Might be it.

That sounds about right and since the ambient air is the inside of the RV, it works fine. As I mentioned, the RV has to be above 45 degrees inside for it to work right and I guessed around 95 as a max but apparently it is 77 interior temp as the max. We keep it running at about 65 degrees.

Licreek wrote:
As winter comes on it looks like I am not going to get way south. Going to spend the winter in the Dallas area as my son gets well in the hospital. So with that said I wanted to ask if and what type of electric heating I should consider for my 36ft Damon. Thanks for any info.

Most of the time, when away from home, we are able to get by with electric space heaters that I pick up from time to time in the local dumpsters.
Then there's two overhead heat pumps and two propane furnaces for backup. The same with our water heater and both electric and propane. I might mention having the genset for supplying a lot of this, if need be, as well.
Seems that there was a person most recently in a deep freeze because of his aqua hot failing. Don't know if he had power available or not, but evidently without backup of any kind.
Is there an aqua hot system out there, that's not prone to eventual failure, that I haven't heard about?
I'm just old school, I guess.

All this 'discussion' regarding a particular heat pump

Has Hijacked the thread, and I'm not sure it is helping the OP make a decision

pianotuna wrote:
May I ask for a link to your make and model? Thanks in advance.

rgatijnet1 wrote:

As far as the brand of mine. It is an Spt but all single and double hose portable heat pump/AC units work the same way, except a double hose unit uses outside air.
My heat pump, with the single hose draws ambient air from the RV cabin. Some of that air is passed over the condensing coil, heated, and blown back out in to the RV.

http://site.sunpentown.com/WA-9061H.1061H_manual.pdf

HEAT mode
1. When HEAT mode is selected, the ambient warm air will be recycled and utilized to heat the
area where it is required. The Exhaust Pipe must be fitted properly to exhaust the cold
air outdoors.
2. Continuous drain is mandatory when unit operates in heat mode.
3. The working temperature range for heating function is 45~77°F/7~25°C. If ambient
temperature is outside this range, the unit may not work properly.

Might be it.

Not at the RV at this time. I bought it at Sears probably 5 years ago. It is an Spt brand, single hose, 10,000 BTU cooling, 9500 BTU heating. It also had a remote control and it draws less than 9 amps in either heating or cooling mode. I can't remember the model number but I am sure that Spt probably makes an updated model now.

May I ask for a link to your make and model? Thanks in advance.

rgatijnet1 wrote:

As far as the brand of mine. It is an Spt but all single and double hose portable heat pump/AC units work the same way, except a double hose unit uses outside air.
My heat pump, with the single hose draws ambient air from the RV cabin. Some of that air is passed over the condensing coil, heated, and blown back out in to the RV.