Now that we've spent 5 days in the Allure in temps in the 20's at night and in mid 30's during the day, I really like the Aqua Hot. My previous two class A's had LP furnaces and they did OK but were noisy and did not seem to heat the coach evenly. The Aqua Hot system is quiet....barely hear the fans, and heats the coach well. Yes, there is plenty of hot water also.
I guess the primary negative to the AH is it is a complicated device that can get expensive to repair. If you have to replace one (due to some serious failure) it will be much more expensive than any LP furnace.
'07 Country Coach Allure 470 Siskiyou Summit #31578, Cummins ISL 425; 2014 Ford F150 toad; Air Force One Toad Brake.
Glen Allen, VA; Smith Mountain Lake, VA.