Forum Discussion
ron_dittmer
Jun 20, 2016Explorer II
I agree that the furnace will kill a battery overnight, if the battery was not well charged before going to bed.
Each motor home has it's own heat-retention factor. Slide outs generally are not well insulated and the seals are not air tight, so they will work against the furnace.
Our rig is a 2007 Phoenix Cruiser 2350 and has a conventional RV furnace and two house batteries. I don't know the furnace BTU rating. We have no slide outs. The interior volume of air in our particular rig is much less than most so there is less to heat. Adding that our floor, walls, and ceiling are very well insulated, and we have thermal glass throughout with exception to the Ford front, the house retains the heat fairly well. It helps to drape a blanket across the two front seats to create a lower-half cold-draft-blocker to minimize cold heavy air into the house.
A cold night at high-altitude in the summer can drop to the upper 30s/low 40s. Our furnace will turn on 3 or 4 times during the night with the thermostat set to 55-60, and our bedroom privacy curtain closed which is where the thermostat is located. The bedroom with thermostat is very tiny and has a heat register inside. I assume our body heat and warm breath helps to prevent the furnace from cycling more often. The thermostat is located a few feet higher than our bed, right about at my belt line which I assume also helps.

If you look close, you can see the side of our thermostat, the white thing on the wall between the bed and mirror. The silver thing just below it is a wall-mounted alarm clock.

Each motor home has it's own heat-retention factor. Slide outs generally are not well insulated and the seals are not air tight, so they will work against the furnace.
Our rig is a 2007 Phoenix Cruiser 2350 and has a conventional RV furnace and two house batteries. I don't know the furnace BTU rating. We have no slide outs. The interior volume of air in our particular rig is much less than most so there is less to heat. Adding that our floor, walls, and ceiling are very well insulated, and we have thermal glass throughout with exception to the Ford front, the house retains the heat fairly well. It helps to drape a blanket across the two front seats to create a lower-half cold-draft-blocker to minimize cold heavy air into the house.
A cold night at high-altitude in the summer can drop to the upper 30s/low 40s. Our furnace will turn on 3 or 4 times during the night with the thermostat set to 55-60, and our bedroom privacy curtain closed which is where the thermostat is located. The bedroom with thermostat is very tiny and has a heat register inside. I assume our body heat and warm breath helps to prevent the furnace from cycling more often. The thermostat is located a few feet higher than our bed, right about at my belt line which I assume also helps.

If you look close, you can see the side of our thermostat, the white thing on the wall between the bed and mirror. The silver thing just below it is a wall-mounted alarm clock.

About Motorhome Group
38,708 PostsLatest Activity: Mar 05, 2025