My old 08 Boliy runs our 15.5 heat pump easily. In fact when I first got my Boliy I experimented with it to see what it would actually run without dropping voltage or amperage. I started the 15.5 heat pump, waited for it to settle down for about 10 minutes, then started the 13.5 heat pump too. The voltage dropped to 108 upon compressor startup, then settled back to 110VAC. I would never do that when camping, it was just a test. I do not try to use econo-mode when powering the heat pump.
One caveat, if you do not run the generator at least twice a month it gets cantankerous when you do run it. I keep Stabil in my gas can all the time, and the right amount of fuel system cleaner too. This eliminates fuel issues_ so far.
2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert theConstitution. "Abraham Lincoln"