Why Is My Furnace Leaking Water?

Why Is My Furnace Leaking Water?


Fearful in regards to the water leaking round your furnace?

Don’t fear, we’ll enable you troubleshoot the issue rapidly. 

The most typical causes of a leaking furnace embrace:

  1. An issue with the AC
  2. A clog or leak within the condensate line (condensing furnaces solely)
  3. A leaking humidifier

We’ll clarify every of those causes in additional element beneath.


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Trigger #1: An issue with the AC

The indoor unit of a central air conditioner is often situated on high of the furnace. If an AC is leaking, it may seem that the leak is coming from the furnace or vice versa. Earlier than we dive into the furnace leaking issues, we’ll first need to rule out the chance that the AC is the reason for the leak.

Air conditioners produce condensation when heat, humid air comes into contact with the chilly cooling coils contained in the AC. Usually, this condensation drains right into a flooring drain, so it is best to by no means see swimming pools of liquid round your air conditioner until there’s an issue.

The most typical issues that result in leaks across the indoor AC unit embrace:

  • A frozen evaporator coil
  • A clogged condensate drain line
  • A cracked drain pan

How you can inform if the AC is the issue: Do you discover the leaking water when your thermostat is about to COOL? In that case, this often signifies that the air conditioner is the wrongdoer of the leaking water as an alternative of the furnace. In case your thermostat is about to HEAT and also you discover leaking water, the issue might be with the furnace (extra on these issues beneath).

Resolution: Every of the AC points we listed above needs to be mounted by an HVAC technician, so that you’ll need to contact an expert to examine your air conditioner and diagnose/restore the issue.

Now let’s check out what causes a furnace to leak.

Trigger #2: A clog or leak within the condensate line (condensing furnaces solely)

As their identify suggests, condensing furnaces produce condensation in the course of the heating course of. Usually, the condensation is carried out of the furnace through a plastic pipe (often PVC) that feeds right into a condensate drain. 

Nevertheless, if the condensate drain or pipe is clogged, condensation can leak out of the furnace, which might clarify the liquid you see pooled across the unit.

How you can know in case you have a condensing furnace: If you happen to see a plastic PVC or CPVC pipe popping out of the furnace, it means you’ve gotten a condensing unit.

Resolution: To repair this downside, an expert should examine the condensate drain and pipe and repair any leaks or clear any clogs. 

Trigger #3: A leaking humidifier

Some houses in our space have a whole-home humidifier put in within the HVAC system to have extra snug air in the course of the dry winter months.

Though it’s comparatively unusual for a humidifier to leak if its drain strains are clogged or inside elements malfunction, it’s attainable to see leaking water across the furnace.

A educated HVAC skilled ought to examine the humidifier and guarantee it drains correctly and that each one connections are safe.


Prepared for Your Furnace Restore? Contact the Cooper Inexperienced Crew In the present day. 

Since 1978, we’ve helped Denver owners lower your expenses, assist the surroundings and resolve their furnace, AC, and electrical issues. Our expert technicians keep fully-stocked vehicles, so that they’re all the time ready to repair your furnace accurately —the primary time. 

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Whether you require installation, repair, or maintenance, our technicians will assist you with top-quality service at any time of the day or night. Take comfort in knowing your indoor air quality is the best it can be with MOE heating & cooling services Ontario's solution for heating, air conditioning, and ventilation that’s cooler than the rest.
Contact us to schedule a visit. Our qualified team of technicians, are always ready to help you and guide you for heating and cooling issues. Weather you want to replace an old furnace or install a brand new air conditioner, we are here to help you. Our main office is at Kitchener but we can service most of Ontario's cities


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