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Water Leaking from Furnace When Heat Is On

Some of us tend to wonder why they experience water leaking from furnace when heat is on, especially during the winter season. This furnace problem has been common over the past years, and we would like to help you solve the issue. 

There are numerous reasons as to why most of us experience furnace leaks of which we have discussed down below. 

In case you have experienced water leaking out of your furnace, then you should be in a good position to schedule a call with an HVAC technician or professional in order to diagnose and solve the problem. 

Although it is good for you to be well equipped with knowledge as to how the furnace functions and the various HVAC components around your home. Down below are the reasons why most of us experience furnace leaks.

Reasons for Furnace Leaks

In case there is water on your furnace’s base, then you should take action immediately. Water damage at your place is very dangerous and affects the other regions at your place that include flooring, walls, and ceilings. Mold presence also tags along if not taken care of soon. Here are the reasons why most of us tend to experience water leaking from furnace when heat is on.

Condensation leak

This is among the common reasons why we experience furnace leaks. Most of the furnaces present in our homes tend to be very efficient hence the AFUE rating of the furnace is 90 and above. 

You will find that this furnace type has more than one heat exchanger that assists in generating heat in the system. Condensation of which is a by-product of heat production should be expelled out of your place by use of pipes or through the floor drain. 

When the pipes break or become clogged, you will experience water leaking out around your furnace’s base. If not immediately taken care of, water will pool up after collecting up for some time causing water damage.

Humidifier leak

This is also another good reason why most of us tend to experience water leaking from the furnace. You tend to experience this problem if your humidifier is clogged if not broken. In order to add some moisture present in the surrounding air, such devices are installed together with the plumbing system. 

You should be in a good position to ensure the humidifier present at your place does not clog or break to avoid water leaking from furnace when heat is on.

Plumbing leak

In case your furnace back at home is leaking water, the issue might not be at the furnace but with the present plumbing system. There might be no problem with the furnace’s components of which isn’t a bad thing, but you have to get the source of water leakage in the furnace. 

When the plumbing pipe present in your system is broken or clogged, this could cause a backup problem with your drainage system. This could seem as you are experiencing furnace leakage. These pipes have to undergo repairing or rather a replacement.

Clogged filters

In case the filters present at your place are dirty and have been clogged, airflow to the furnace coils is restricted. For most of the furnaces, this causes freezing of the heating coils, although it causes water leakage at your furnace that should be taken care of immediately. You should be in a good position to check the filter’s condition and replacing them in case they are dirty.

Heat exchanger problems

In case there is a certain problem with the heat exchanger, this could, in turn, cause water leaking from furnace when heat is on. It is very expensive to repair this issue. In case you are experiencing water leakages at the furnace and you have not found any possible causes of this problem, the heat exchanger might be the problem. 

You need to install another new heat exchanger for your furnace. An HVAC expert can advise you on how to deal with this situation properly.

AC unit leaking

In regions that experience mild climates, people tend to use AC units and furnaces during similar seasons. If this is the case at your home and the AC unit present at your place is in use, excess water from the full condensation pan drips on your heating system. In case you are not aware. You could think that there is water leakage at the furnace but honestly it’s your AC unit.

Measure Steps to Take When Experiencing Furnace Leaks

In case you notice that your furnace is leaking water, you should be in a good position to act immediately and swiftly. Before the HVAC technician has arrived to diagnose the issue, there are some measure steps you should take. 

You should shut down the whole system by use of the switch near your furnace. In case you are not aware of the location of the switch; you can turn the furnace off using the breaker. You are supposed to clean the water that has dripped from the furnace. 

It is very important that you thoroughly soak all the water up in order to avoid water damage. You can use the wet-dry vacuum instead if the water dripped from the furnace is a lot.

You should also check the condition of your air filters. In case the filter present in your system is clogged and dirty, you will be forced to buy new ones and install them. In case you are not sure where the location of the water leakage is, you could schedule a call with an HVAC expert to assist you in solving the furnace leak.

Hiring HVAC Professional Experts

It is very easy and normal for the HVAC professionals to know the cause as to why is water leaking from furnace when heat is on. You can also consider the various repair companies that are available in your area that are well experienced with the various HVAC systems. 

Some of the companies tend to specialize in AC models only, so you should ensure that the repair company you have chosen is well experienced in furnaces as well.

In order to expel furnace problems,  you should make sure that it is well maintained and regular tune-ups every year are done. This ensures that your furnace has a longer lifespan and lowers the energy bill.

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