Condensate Furnace Drain Line Freezing

With the pipes blocked the condensate backed up into the furnaces where safety switches shut the units down.

Condensate furnace drain line freezing.

Shorten the pipe outside so that there s less area exposed widen the pipe at the end if the ice starts at the end from the drip expanding it to 4 might work insulate or heat the pipe using heat tape or something like that which i don t know anything about something else. If there are clogs anywhere in the condensate line the system will freeze. 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. Condensate drains on the high efficiency condensing units were freezing where the drain pipes terminated outside the house.

In reality a major repair may not be necessary as thawing the frozen drain lines should fix the issue. When that happens most hvac systems are designed to shut off completely leaving homeowners scrambling for a solution. Blocked condensate lines the condensate lines in your hvac system are responsible for draining the excess moisture caused by humidity. The moisture is drained through pipes leading to the floor drain.

They did not bury the pvc very deep about 3 inches thus when temperaturs go lower that 20 degrees for a couple of days the condensate inside the pipe freezes and back up. 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. A clog can prevent moisture from exiting the system allowing it to pool up within your unit.