Arkansas HVACR NewsMagazine May 2026

HVACR NewsMagazine May 2026

Tech News

Method #4: Clearing The Drain Line at a Horizontal Tee With A Shop Vacuum When there is a horizontal access tee, use a 1/2" CPVC 90° fitting with a section of CPVC pipe attached to a 3/4" PVC bushing, to access the inner pipe. The 3/4" bushing typically fits into the shop vac's hose end. This assembly can be used to blow or suck out debris inside the horizontal section of pipe. Remember to fill the trap with water and replace any service caps when complete.

Method #5: Vacuum the Trap Using a Shop Vac Hose with a Section of CPVC Pipe Attached to the End. Simply connect the 3/4" to 1/2" pipe to the end of the shop vac and insert it into the condensate trap. Remember, attaching electrical tape to increase the diameter of the 1/2" CPVC pipe will allow it to seal better when inserted into the trap. Turn on the shop vac. Remember to fill the trap with water and replace the service caps when complete.