Bad smell when running heat

midnightsadie wrote:
rent a camera and look around. but mice sure sound like the easy way. p.s do you know that propane has a real nasty smell? you could have a leak.

Can't see mouse urine without UV light but you sure can smell it and it IS one nasty smell that just does not go away.. Makes the odorant in propane smell like a expensive perfume..

Had the same issue with my first TT, the mice had gotten into the flexible ductwork, made nests in there. Replaced the ductwork with new but STILL would occasionally would smell the mouse urine smell coming from the furnace.. Obviously they must have had a blast inside the furnace..

Any flexible ductwork needs to go, any hard ductwork and furnace might be cleanable with something like pet urine removers.. But there is no guarantee that it will fully remove the smell.

Another potential source of this smell also comes from the fact that some of the furnace heat is sent around your fresh water tank and back into your RV.. Good chance they were there also! You will have to do some detective work to find the duct going to the tank AND the vent that comes back up from the tank.. But worst of all is if they were there, you will most likely have to remove all the insulation around the tank and start from scratch..

A BIG, BIG job and there is no short cut to fixing this, no bandaids, no amount of ozone generators will fix it.. Complete scrubbing or removal of the affected items is most likely going to be required..