Success with AC coil cleaning

[AikenRacer]

Pulled off the covers on our 3 ac units on the roof. Utilized some plastic sheets, duct tape and towels to seal off the opening to the mh interior. Spread out tarps over our bed, etc. that were located below the interior ac openings and set up my shop vac on the roof. Cleaned all 6 coils on the roof, 2 on each unit. Sprayed with the coil cleaner from Lowes. Rinsed with a water hose and at the same time had the shop vac running to suck up the rinse water. Worked really well. Only a small amount was caught by the interior tarps. Rinse water was awful. Can't believe how dirt the coils were. Got a $20 rinseable air filter from Lowes, cut to fit my intakes and now have a much better filter system. No major decrease in air flows. Will keep closer check on our system, they will never get that dirty again. No real problems, just took some time and very careful work on top the mh.

[Gordysvette]

Good morning Mr Hostage ,I should have explained in more detail my damage . My cheap plastic roof vents are covered by Maxair vent covers .My 3 air conditioner have side and back slots that expose the Aluminium fins , which were all crushed by the hail.The black covers over the air conditioners had holes in the top from the large hail stones .

[Gordysvette]

Good morning Mr Hostage ,I should have explained in more detail my damage . My cheap plastic roof vents are covered by Maxair vent covers .My 3 air conditioner have side and back slots that expose the Aluminium fins , which were all crushed by the hail.The black covers over the air conditioners had holes in the top from the large hail stones .

[Snomas]

I got hit w/ hail storm in Colorado 2015 and had to replace the entire rubber roof, 2- a/c units ( upgraded to 15K btu's) , all plastic vents, etc. Much better A/C system now. I just cleaned the ac units W/ an air compressor and some dirt blew out.

[hostage]

Gordysvette wrote:
Roof had hail marks but not damage and all vents have covers so all is good .

Ok just seems real odd that 3 covered roof AC units are destroyed by hail but the cheap plastic roof vent covers etc sustained no damage is the reason I asked

[Gordysvette]

Roof had hail marks but not damage and all vents have covers so all is good .

[ArchHoagland]

hostage wrote:

Gordysvette wrote:
Hail storm just wiped out my 3 roof top units , so I'll be starting with new units this year for our winter trip to Arizona . But I like your cleaning idea , I've only used my compressor to blow out my units every year.

Holly cow what about the roof and roof vents etc.

X2

[hostage]

Gordysvette wrote:
Hail storm just wiped out my 3 roof top units , so I'll be starting with new units this year for our winter trip to Arizona . But I like your cleaning idea , I've only used my compressor to blow out my units every year.

Holly cow what about the roof and roof vents etc.

[Gordysvette]

Hail storm just wiped out my 3 roof top units , so I'll be starting with new units this year for our winter trip to Arizona . But I like your cleaning idea , I've only used my compressor to blow out my units every year.

[AikenRacer]

We only use the mh about 6-7 times a year and for only a week at a time. No dusty areas. Windows stay closed. The rear one was the worst. Have no idea why they got so dirty. It really shocked me. And we are not smokers and don't cook much inside. Yes, the cooling is better.

[hostage]

wolfe10 wrote:
Most RV A/C air filters are really poor.

In addition to dirt, humidity significantly adds to deposits on the evaporator coil. Said another way, when the coils are WET from condensation, lots sticks to them.

9 years and clean is shocking unless in very dry and clean environment.

yes its been only used in hot sunny days in south ca and a small amount in BC/washington

[wolfe10]

Most RV A/C air filters are really poor.

In addition to dirt, humidity significantly adds to deposits on the evaporator coil. Said another way, when the coils are WET from condensation, lots sticks to them.

9 years and clean is shocking unless in very dry and clean environment.

[hostage]

Interesting I have two 15K roof ac units on my AB and its going on 9 years and the condenser and evap coils are still very clean I use about 5 months of the year;;where and how do some of you pick up all the dirt? like you must operate your ac in a dust storm or something?

[ArchHoagland]

Did you notice any improvement with the cooling after cleaning?

[wa8yxm]

I have only had to clean an evap once in 12 years

Clean the condensers 2 or 3 times a year

Now have a COleman for one of my A/C units and thanks to a "CHina Bomb" fan the other has a coleman fan in it.. WAY WAY easier to clean now

Remove cover.

Hit with Compressed air at an angle

Replace cover

Done