How do you clean the evaporator coils on a central AC unit?

You ’ll need five instrument to houseclean the evaporator coil on yourAC unit : a screwdriver , a strong coppice , a heavy mitt mirror , household bleach and wire . Once you have these tools , ensure you know where the evaporator gyre are located . You ’ll find the evaporator for a primal air system locate straight off above the furnace in the plenum ( main canal ) . Your AC unit may have a plenum that is sealed shut . If so , do n’t seek to open it ; it means you do n’t have an AC whole you may scavenge yourself .

assume you could open your AC whole ’s plenum , the first affair you desire to do is remove the transparency - wrapped insulant at the front of the plenum . This insulating material is in all likelihood taped in place , so remove this tape cautiously . You will have to put it all back . Behind the insulation is an access plate . Take your screwdriver and transfer the screws holding the crustal plate in topographic point . Once the fuck are out , polish off the entree plate .

Now you should see the evaporator itself . Some can be slid out a bit , even if they have rigid pipes , but be heedful as you do so . Use the stiff brush and hand mirror to clean out the underside of the evaporator unit .

You ’ll also want to clean out the tray that ride below the evaporator . The tray is there to persuade away capsule from theevaporator . Take one tablespoon of whitener and pour into the weep hole to prevent fungus ontogenesis . If the tray has a lot of moisture , it could be due to a occlusion in the drain line that connect the weep hole to the tray . If that ’s the subject , you may spread up the waste pipe line by pushing a wire through it .

Once the cleaning has been done , push the evaporator back into place if you ’ve moved it and make love in the admission plateful . Then you take to re - record the insulant back over the plenum .