Why Is My Furnace Leaking Water?

If you live in a cold climate, you probably have a furnace working hard to keep your home comfortable. However, while these systems work wonders at keeping you warm, they can experience problems at some point. Unfortunately, one of those problems involves a furnace leaking water. If this common issue is happening in your home, it’s important to clean up the mess and find the root of the problem.

As leaking water can be a frustrating issue to experience, finding a fast solution should be the top priority.

Keep reading to learn the common reasons why your furnace is leaking water, including some tips on how to fix the problem right away.

Furnace leaking water? Here are some common reasons why

Humidifier Leak

Some homes have a humidifier attached right to the furnace. These devices help to add moisture to the air, which can provide a number of benefits. However, if there’s a leak in the system, this can cause water to drip to the floor. This usually happens when there’s a broken component or clog in or around the humidifier.

If you notice water leaking from furnace, be sure to call an HVAC professional to check things out. On some occasions, the repair job could take just minutes. But if the problem is ignored, the issue could get much much worse.

Condensation Leak

If you have a furnace leaking water, a condensation leak could be the culprit. In fact, this is one of the most common reasons for this issue. As many furnace models today have high-efficiency ratings, they require two heat exchanges to work properly. This process causes condensation, and this moisture escapes your home via pipes. This water usually goes through a floor drain.

When these pipes break or experience a clog, this can lead to leaking water in the system. If you notice water around furnace, this could be the culprit. Make sure to call a professional as soon as you learn about the problem. Waiting too long could result in costly water damage.

Clogged Filter

A water leak from furnace could also be caused by a clogged or dirty furnace filter. While these filters are used to clean the air and keep us healthy, debris can get trapped in them over time, leading to restricted airflow through the furnace coil. On many occasions, this can actually cause the coil to freeze. However, the problem could also lead to a furnace leaking water.

If you notice a frozen coil or water leaking from the system, a professional can fix this troubling issue. But to limit the damage and avoid costly problems, make sure to periodically examine your furnace filter and replace it when necessary.

Plumbing Leak

Notice a water leak from furnace? While you may think this leak is coming from the furnace itself, it could actually be coming from your plumbing system. Unless you have a massive plumbing issue on your hands, this could actually be a good thing; it could mean there’s nothing wrong with your furnace, which could save you tons of money. However, this plumbing problem is something you shouldn’t ignore.

As your plumbing pipes may be located around your furnace, it’s easy to mistake a plumbing leak for a furnace leak. If you notice this plumbing issue, it could mean there’s a damaged or clogged plumbing pipe. Be sure to call a plumber or HVAC tech to make the necessary repairs ASAP.

Leaking AC Unit

If you live in a mild climate, you may use both an air conditioner and a furnace during the same time of year. As your AC unit operates, the condensation pan fills up with water over time. When the pan is too full, some water may drip onto your furnace. While it may look like there’s a water leak from furnace, the problem could be as simple as an overflowing condensation pan. When this happens, make sure to empty out the pan, or you can call an HVAC professional to take a look.

Heat Exchanger Issue

Another cause for water around furnace could relate to a heat exchanger problem. As heat exchangers help to transfer heat throughout your system, condensation is produced. But on some occasions, a water leak can happen. While this issue is rare, it can still occur. Experts advise checking the heat exchanger for leaks if all other possible causes can’t be found. Unfortunately, repairing this problem can be costly. In fact, the issue could mean you need a heat exchanger replacement. But it’s important to have an inspection by a licensed professional to determine the best course of action.

Notice your furnace leaking water? Act fast!