best method

[hvacbal]

what is the easy and best method to clean central airconditioner cooling coil.

[nosplumheat]

evap. or cond. coil???

[hvacbal]

i allready mention cooling coil is evaporator .my friend nosplumheat

[nosplumheat]

sorry i tend to read a lil to fast and read over stuff and not even think bout it.

anyway, get A coil cleaner in a can open pleunum to get to coil and spray it down thats the easyest but not the best because you cant get to the dirtiest part or the coil the underside!! depending on how it was installed you may be able to move it out enough to get to the inside and use cleaner, fin comb, and rag, but if not u dont haveto many choices.

[nosplumheat]

in my world there is no "cool" absence of heat!!

[hvacbal]

thanx for ur concern nosplumheat.

[Wild Leg]

Remove refrigerant from coil.

Remove coil from house.

Remove dirt from coil (water & coil cleaner, properly diluted.) Wear protective clothing & PPE.
Repeat as necessary.

Reinstall coil. (Flow nitrogen while brazing.)

Install filter drier, (be sure to remove the old one).

Leak test, evacuate, and reinstall refrigerant.

Clean up the mess.

If you lack the skill, tools, and/or certification, refer to the yellow pages.


Good luck.

[nosplumheat]

i hope you dont do that with every tune and clean b/c that would get realy expensive for the HO.

forgot to ask was it service regularly??

[Wild Leg]

Originally posted by nosplumheat
i hope you dont do that with every tune and clean b/c that would get realy expensive for the HO.

forgot to ask was it service regularly??

Not on a routine preseason.

Only on those that have not been properly maintained.
And yes, it is expensive.

[gcastillo]

That's the only way to really get a clean coil. Yes it can be expensive but what are your alternatives? Charging for a cleaning that isn't really clean.

[on call]

What about a unit that is regularly maintaned? Agreed, pulling out the coil and cleaning is the best way. But, that is not going to be done every cleaning. Cleaning the coil in-place is someting that I feel must be done also to remove what has bypassed the filter.

I have a lot of units that I service and I have been cleaning the coil with a brush and some coil cleaner. The problem I run into is how to clean the inside apex of an a-coil.

Anybody have suggestions on what is the most effective way to do this?

[ryan_the_furnace_guy]

Go in through the limit switch opening with a small shopvac hose and sweeps away...........

(kids, don't try this at home)

[ryan_the_furnace_guy]

Originally posted by on call
What about a unit that is regularly maintaned? Agreed, pulling out the coil and cleaning is the best way. But, that is not going to be done every cleaning. Cleaning the coil in-place is someting that I feel must be done also to remove what has bypassed the filter.

I have a lot of units that I service and I have been cleaning the coil with a brush and some coil cleaner. The problem I run into is how to clean the inside apex of an a-coil.

Anybody have suggestions on what is the most effective way to do this?

I wonder about this too. Theoretically, couldn't you get above the coil with some pressurized air and blow the crap off the bottom and scoop it out of the blower. Or, maybe, remove the blower first.

[krd]

If you plan on cleaning the coils on a continual basis,start to convert the plenums to increase your time. If you can get to the backside of the triangle plates on the A coil it is easier access than going thru the distribution network in the front. Cut a rectangular plate out of the plenum and make up a door you can take off easily. remove the access steel from the coil and lay a pleated filter over the heat exchanger to catch any loose debris that falls. vacumn first with a soft bristle brush and then spray your cleaner on and flush off with a spray bottle of clear water. any residue will go down into the drain pan. run the fan only on the furnace when your done to dry anything you got too wet.