No P Trap On Ac Drain

Water lots of it.

No p trap on ac drain.

If your equipment is in a conditioned space the air escaping from the vent won t be a great loss. The ac equipment is set on the slab floor or curb and it is the mechanical contractor s job to install a p trap. What is a p trap. See water won t flow up hill so the 180 degree turn in the drain causes water to get trapped in the bottom of.

Having your p trap and unit inspected and cleaned properly with a solution and technique administered by professionals is key to keeping your unit running smoothly. This video is part of the heating and cooling series of training videos made to a. There is a major difference between using p traps on sanitary applications and condensate removal from an ac unit and that is. A p trap is nothing more than a properly shaped piece of pipe no moving parts just the proper shape so gravity does the work for us.

Current drain systems condensate drain systems accepted as the industry standard include water traps like the one shown in figure 2. Some coil manufacturers specify no trap on a positive pressure application which it appears yours is. Air conditioning units are shipped from the factory to the job site without a condensate drain trap. Drains on a negative pressure location must have a trap or the water will not drain.

Properly designed and maintained trapped systems can provide successful condensate drainage. Installing a flush out tee in the drain line is beneficial for maintaining your p trap as covered in our section on mold and algae. Problems with a central air conditioner s condensate drain. But the line after the pump is usually a rubber hose and it does not need a p trap in the same way that a gravity fed line does.

See below for an image of a sink p trap which works the same way. The line between the ac coil and the pump is pretty much like any other so yes it needs a p trap and vent as shown. Because dry air holds less heat energy humidity. Central air conditioners produce something other than cool comfort.