QUOTE (Brian B-P @ Mar 28 2006, 12:02 AM)

Any air conditioner is a heat pump, but they usually pump heat only one way: out. Some air conditioners - in both house and RV versions - have the extra plumbing and control to pump heat in as well, extracting heat from outside air to warm the interior. Lots of people heat their homes this way, but the effectiveness certainly is limited by the outside temperature. For someone in a moderate climate, this is a very efficient approach and can replace the furnace; in a more exteme climate, it can avoid use the furnace for much of the year.
Yes, since this is an electrically driven heat pump, both heating and cooling require (only) AC electrical power.
This particular unit seems large, which may partially be due to the extra hardware for the heating mode, but it is also much larger in cooling capacity than the window-type units which egg owners normally select. I noticed that A/C with heat pump is available in Airstreams, but even in those high-priced trailers it is an option, and then only with the higher-capacity (15,000 BTU/hr!) unit. The more common way to add heating ability to an A/C is to add a resistive "heat strip", which is just using the interior fan of the air conditioner with a normal electric heater - much more power consumption than a heat pump, but cheap to build.
Dave, you may be reading too much into the lack of replies... since the heat pump feature is not generally available in smaller units, my guess is that very few FiberglassRV members have any experience with these systems. Also, if you tried the same post in the Delphi Boler forum, you might not have realized that forum is much less active than this one. I have a technical interest, but have zero experience with the Cool-Cat (or any other RV unit) myself.
Hi Brian,
Thanks for the very informative feedback on these babies. Did you see the Mod done on that Scamp for an A/C unit just below the closet? Pretty cool. What do you think of doing that instead of the Cool Cat? Looks like I might have to be a Heating & Cooling Guy to even consider doing this on my unit. Plus I had to start cutting larger spaces to make it work. Dave in Michigan