It's funny, being in So Cal I never really thought too much about the Webasto system other than it worked when I got the motor home. Then it stopped working even though I really didn't use it for 10+ year's I never gave it another thought until last year in Quartzsite where the Aqua guy was servicing other rigs. Long story short, after all these years of non use, he had it running perfectly well in 30 seconds(a reset button I didn't find). I did have it serviced with a new filter and other small items...it works great now.