Roof Air Cleaning
Hi All, I have a 5 year old Bounder MH with 2 roof air units. I can look up through the inside filter access and see the condensation coils are pretty dirty, plus one of the two units definitely has ...
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It's from this RV.net/blog article by Chris Bryant. I've done this on two Coleman Mach units. In the case of the first one, 20+ years old, I was able to continue using one I thought was worn out. On the newer one, 10 years old, I have better and quieter performance.
I modified Chris' process in two ways:
1. I found I could use a "deflector" (expired license plate) to shield the opening down into the coach ceiling. That let me actually hose the evaporator coil out.
2. On the newer unit, I pulled the fan motor out. That let me hose the condenser coil out from behind. More importantly, it let me take the indoor blower wheel (squirrel cage) out and remove the greasy dirt from the insides of the blades.
Even if the unit "looks clean" the amount of debris that flushes out of the evaporator drip pan will astound you. By cleaning it, you can know that condensate will drain out onto the coach roof and not inside.
This is a VERY worthwhile project.
I modified Chris' process in two ways:
1. I found I could use a "deflector" (expired license plate) to shield the opening down into the coach ceiling. That let me actually hose the evaporator coil out.
2. On the newer unit, I pulled the fan motor out. That let me hose the condenser coil out from behind. More importantly, it let me take the indoor blower wheel (squirrel cage) out and remove the greasy dirt from the insides of the blades.
Even if the unit "looks clean" the amount of debris that flushes out of the evaporator drip pan will astound you. By cleaning it, you can know that condensate will drain out onto the coach roof and not inside.
This is a VERY worthwhile project.
