Forum Discussion
Golden_HVAC
Oct 07, 2015Explorer
Inverter technology is mostly used in ductless heat pumps and air conditioners.
However they do not build a ductless unit that would work well on a RV, because in the RV it might not be level most of the time, and the drain would overflow onto whatever is below it.
To bad someone has not come out with a good unit. It probably would have a 16,000 Btu's rating, and stay running all the time, running on a much lower amperage and speed while the load is small, but can run up beyond 60Hz when the load is greater.
The Mitsubishi 'City units" at my work have one compressor for about 10 indoor coils. Each indoor coil is about 1 ton of capacity, and the compressor is about 7.5 tons. It can run from 15 Hz to 120Hz. They work great in the summer time and keep all the rooms cool, but when below about 15F, the City unit does not keep up well with the heat loads placed on it.
I would recommend a heat pump if you have to provide electricity for your heater too. To produce 80,000 Btu's you could run the furnace and burn 1 gallon of propane, or use 22 KW in a electric heater, or use about 8 KW with a heat pump to put out the same amount of heat. Cost? Here the propane is about $2.50 not delivered, or $2.20 for the electric (Portland OR has low electric rates due to hydroelectric power) or $0.80 for the heat pump.
Personally I would pay a little more for the electric heater because I would not need to deal with refilling the tanks. . .. But it is really nice to have a heat pump.
Good luck with your search!
Fred.
However they do not build a ductless unit that would work well on a RV, because in the RV it might not be level most of the time, and the drain would overflow onto whatever is below it.
To bad someone has not come out with a good unit. It probably would have a 16,000 Btu's rating, and stay running all the time, running on a much lower amperage and speed while the load is small, but can run up beyond 60Hz when the load is greater.
The Mitsubishi 'City units" at my work have one compressor for about 10 indoor coils. Each indoor coil is about 1 ton of capacity, and the compressor is about 7.5 tons. It can run from 15 Hz to 120Hz. They work great in the summer time and keep all the rooms cool, but when below about 15F, the City unit does not keep up well with the heat loads placed on it.
I would recommend a heat pump if you have to provide electricity for your heater too. To produce 80,000 Btu's you could run the furnace and burn 1 gallon of propane, or use 22 KW in a electric heater, or use about 8 KW with a heat pump to put out the same amount of heat. Cost? Here the propane is about $2.50 not delivered, or $2.20 for the electric (Portland OR has low electric rates due to hydroelectric power) or $0.80 for the heat pump.
Personally I would pay a little more for the electric heater because I would not need to deal with refilling the tanks. . .. But it is really nice to have a heat pump.
Good luck with your search!
Fred.
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