Whom Of Us Boondocks 14-days Or More At A Stretch?
I mean on a regular basis? Vacations like... Trying to get an idea of whom is whom...it helps. SOLAR or GENERATOR?
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SCVJeff wrote:
but that's a moving target depending on outside tempo and what can be harvested, no?
Obviously 65 is way more efficient than 55. So where's the break-even point?
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Not all heat pumps are the same.
For starters what is being referred to in this thread are "air-to-air" type heat pumps. There's other type heat pumps for fixed (residential/commercial) structures that are a geo-thermal design in that their heat reservoir source is tapped via pipes buried in the ground that use a liquid for transfer of heat from the ground into a structure.
The small capacity house window/RV-roof heat pumps most folks are aware of do indeed fall off quickly in efficiency of moving heat ("pumping" it from the outside air) as outside temperatures get below around 40 degrees.
FWIW In contrast, our stick and brick home utilizes a large relatively high tech central air-to-air heat pump with such things as a multiple stage compressor and variable speed main blower. It still puts out heat from the registers with outside air temperatures down in the high 20's. Heat pumps for RVs aren't going to be of this type.
