Archive for October, 2014

Why is my furnace leaking water?

Posted on: Friday, October 3rd, 2014  In: Uncategorized  |  Comments Off on Why is my furnace leaking water?

Furnace Leak

At H & F Service Co. we are frequently faced with commonly asked questions from our clients. One question we have fielded many times is “Why is my furnace leaking water?” The answer to this question depends on a few factors, but the following are some common reasons for a furnace leak.

High-efficiency FurnaceĀ Leaks

high-efficiency furnaceFirst, do you have a high-efficiency furnace? These are furnaces with an AFUE rating of 90 percent or higher. A high-efficiency furnace has a cool exhaust which produces condensation. An easy way to tell if you have a high-efficiency furnace is to check the vent pipe. If your vent pipe is white PVC than it is a high-efficiency furnace.

If you do have a high-efficiency furnace there is a possibility that the condensation from your cool exhaust is not being properly drained. The condensation should be drained through a floor drain. But a leak can occur when the tubes which channel the water become clogged or have breaks in the line.

Standard-efficiency Furnace Leaks

If you do not have a high-efficiency furnace you should have no condensation. If there is condensation though you may have an incorrectly sized flue pipe. This will cause the hot exhaust to cool and condense in the piping. Then the water will drain back to the furnace and leak.

Another possibility with a standard-efficiency furnace is that you have a humidifier issue. The humidifier can wind up leaking inside your furnace.

These are only a few of the most common problems that can cause a furnace leak. If your furnace is leaking, contact an HVAC tech right away. Furnace leaks can lead to further damages to your HVAC system and to the structure of your home. At H & F Service Co. we are well versed in repairing furnace leaks in Alexandria and surrounding areas. Give us a call for assistance.