Condensate Pump Drain Line Frozen

I added a secondary shutoff if the new pump fails via a float switch.

Condensate pump drain line frozen.

We went outside and saw the drain line was about 2 feet long of 2 pvc mounted vertically about 6 inches off the ground. How to prevent frozen condensate drain lines. Your inside coil should have two outlets to drain condensate one running outside and the other with a float switch to shut down the unit if the outside drains clogs. The vast majority of your condensate line should be inside your home where it s warm.

During periods of snow verify that snow hasn t risen to the level of the drain line where it can block it and cause further freezing. Just saw off the portion of the line that is frozen. The condensate pump will only come on if the outside gravity line freezes. Water will back up but instead of triggering the furnace shut off it overflows through the new t fitting into the condensate pump and voila.

Cut your condensate line close to your house so the water drains before freezing. Shortening the drain pipe to give water less space in which to freeze can also be effective. The best way to stop condensate drain line freeze is to use weather proof sleeves placed around the drain. Last night my heat forced air suddenly stopped.

Today a plumber figured out that my heater is 90 efficient produces lots of condensate and the drain line had frozen.