09:50AM | 07/21/01
Member Since: 07/20/01
2 lifetime posts
My air conditioner drain is not only draining from the PVC outlet out side, it also is draining from the walls outside. Is this normal or do I have a problem? Solutions that I have tried: Liquid plummer


02:35PM | 07/21/01
Member Since: 09/01/00
312 lifetime posts
I will take a guess that the pvc is leaking inside the wall,either from a break or leaking joint.No more liquid plumber!This could be easy to fix or a nightmare.Would need to know more about wall material and how far the pipe goes from ac to outdoors.


05:09AM | 07/23/01
Member Since: 03/13/00
1675 lifetime posts
If your air handler is in the attic, the sheetmetal catch plate (don't know the right name for it) that's under the coil may be leaking. You ought to get it checked out right away. If this is the case it could damage walls, ceiling, etc.
Hopefully, it's just a leaking pvc pipe that's not putting any water on the inside.


10:52AM | 07/23/01
Member Since: 11/14/00
333 lifetime posts
Two potential problems. First, and most likely, the drain tray (not the drain pipe)is probably clogged-up with gunk, preventing some of the water in the tray from reaching the drain hole. (The water pools in the tray instead of draining, until it overflows.) Drain trays under the evaporators very commonly fill up with all kinds of gunk (mold, dust, dirt...), even when you have a good air filter on the system. They should be routinely cleaned every few years along with the evaporator coil, but are often ignored until they rust out and even ruin the evaporator coil.

Second, the drain pipe might be a slow drain such that it allows some drain water to escape through it, but not enough so that the drainage tray overflows. It is very common because AC drains are slow drains that rarely get flushed out with a large volume of water, which helps prevent organic and inorganic build-up from forming. I had to use several applications of Drano foaming Pipe cleaner on my AC drain pipe recently, which eventually cleared out my AC drain that the previous owners had neglected for 30 years.

Liquid Plumber is probably the wrong product to use on an evaporator coil/drain tray, although I am not so sure it will cause more problems. The commercial cleaning solutions used to clean evaporator coils often contain muratic acid, which is a stronger, more caustic acid than the acid in Liquid Plumber. Using it a few times over the life of the coil to clean the coil should not ruin the coil or the drains. It is only when people use Liquid Plumber-type acids FREQUENTLY that people inadvertantly ruin their drain pipes.

Nonetheless, your problem on an A/C drain pipes is probably not a clog (for which Liquid Plumber or lye would be used) but a SLOW DRAIN due to build-up in the pipes, for which there are other, less caustic products designed to cling to build-up, remove it, and then harmlessly wash away (like the Drano foaming pipe cleaner).

Click to reply button
Inspiration banner


Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.

Reply choose button


Post new button or Login button

To test the boundaries of small-footprint living, interior designer Jessica Helgerson moved her family to a 540-square-foo... Filling an underutilized area beneath the stairs is a smart way to save space. Doing so with a stash of wood, however, is ... The Audubon Society inspired wallpaper in this Adirondack-styled mudroom will get you in the outdoor mood. Grab your coat ... Chalkboard paint opens up endless possibilities for customizing your dresser time and time again. Use chalk to label the c... A fireplace in the bathroom creates the ultimate setting for relaxation. Homeowners often choose electric or gas over wood... This roomy boot tray made from punched metal stands up to all the elements. Station it in your mudroom or at your back doo... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... FLOR tiles are an affordable way to customize a carpeted floor covering for any space. Make anything from runners to wall-... Chalkboard paint features prominently in this elegant yet unpretentious headboard design. Add a new message daily to reflec... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... The indecisive homeowner need not fret over choosing one (or even two) cabinet colors. The kitchen cabinets in this artist... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... First dress up your metal shelves with a coat of paint in an accent color that complements your kitchen decor. Then arrang... Dark wood shelving and a matching upholstered bench keep this closet sleek and refined. The large window brightens the sub...
Follow banner a
Newsletter icon Flipboard glossy Facebook Twitter Pinterest Youtube Rss icon