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Furnace 101: Why is Mine Leaking Water?

Furnace 101: Why is Mine Leaking Water?

Furnace 101: Why is Mine Leaking Water?

There could be several reasons your furnace is leaking water, but the most likely one is a condensation leak.

Usually, the condensation that comes from a high-efficiency gas furnace gets channelled to a floor drain. The leak could be caused by condensation tubing getting clogged or from breaks in the line. It may also be because the floor drain is clogged.

A standard-efficiency furnace with a metal exhaust pipe should not have any condensation. If it does, that could meant the flue pipe is not the right size. That could let the hot exhaust to cool down and condense inside the pipe, drain back to the furnace, and eventually leak.

Furnace Humidifier Issues

There may also be an issue with the humidifier which must be leaking inside the furnace. Of course, if your HVAC system receives annual checking and maintenance, this is a very unlikely scenario as your service technician would be able to detect this issue early.

If you have overlooked that tune-up, then you should make the call now because if it is, indeed, the problem, that leak could cause a lot of internal damage to your furnace.

Problematic Furnace Secondary Heat Exchanger

If the issue is not furnace condensation or problems with the humidifier, it’s possible that the source of water around your furnace is the secondary heat exchanger. You should really  hope that it’s not, though, because if so, it’s going to be an expensive repair and might even require you to replace your furnace completely.

Clogged Internal Drain System

If your air conditioner is still running and it shares an internal drain with the furnace you’re using, then it’s possible that you have an internal drain system plug that is sending water to the furnace.

We cannot accurately diagnose your issue this way, but you should not let this go on for much longer. When your furnace is leaking, that is a clear indication that you have to call in professional help.

Leaks can result in much bigger issues that include damaging parts, not to mention ruining you rflooring and walls. It may even lead to mould growth! A seasoned heating and cooling specialist like Twintech Heating and Cooling will be able to quickly find the source of the furnace leak for you and offer effective solutions to your furnace concerns. Do not hesitate to give us a call for any heating and cooling problem!

See What Our Customers Are Saying:

by Rita, Scarborough on Twintech Heating and Cooling
We were so pleased with their service

When our old oil furnace finally broke down we decided it was time to finally convert to natural gas and finally install central air conditioning at the same time. Knowing it was going to be a significant investment for us, we wanted to make the right choice. Twintech came highly recommended by a friend and we were not disappointed. From the first contact with the salesperson, until the final touches on the installation, we were so pleased with their service. Everyone from the company was so friendly, efficient and a pleasure to deal with. Best of all, the cost was very competitive. We would certainly recommend Twintech to anyone requiring HVAC work in their home.

by Bob S, Pickering on Twintech Heating and Cooling
We found him to be friendly, conscientious & he left the work area clean!

Mitch from Twintech came out for our annual furnace inspection. We found him to be friendly, conscientious & he left the work area clean. We were also very impressed with the thoroughness of the job he did. This is the 2nd job we’ve had Twintech do for us & have been very happy with the results for each. We highly recommend this company. Thank you, Mitch, Dave & Greg.

by Brent L on Twintech Heating and Cooling
Very happy with the end result!

Work was done on schedule, professionally, according to quote and with minimal inconvenience to building users. Very happy with the end result. The only area for improvement from my experience - need more timely quoting process.

by Karen on Twintech Heating and Cooling
They stand by their products and are a pleasure to deal with!

The team was great! Very knowledgeable, professional and extremely helpful. A few days after install the unit didn’t seem to be working, user error, but within minutes of contacting them..on a Saturday.. a tech was on the phone troubleshooting with us. I highly recommend Twintech for your cooling or heating needs. They stand by their products and a pleasure to deal with.

by Rob on Twintech Heating and Cooling
Within a couple of hours, we had a new unit up and running!

During the hottest week in the summer our old A/C decided to call it quits. I called Twintech Heating & Cooling after receiving a referral from a family member; came highly rated for being an honest, family-run business, who appreciates their customers. Dave was able to accommodate my hectic schedule and book a late evening appointment to walk through the specifics. Greg and Mitch arrived exactly on time a few days later, were very polite and friendly, and within a couple of hours had a new unit up and running. I also received a follow-up call to ensure we were happy with the Amana.

by Linda Robinson on Twintech Heating and Cooling
I'm so glad I decided to go with Twintech!

They were on time and very professional. I'm so glad I decided to go with Twintech, thanks!

by Famcam1953 on Twintech Heating and Cooling
What was promised, was delivered at a cost-effective price point.

Timely and appreciated - this was during the hottest days this year when our Air and Furnace way.
Efficient. Professional. No BS or overselling. What was promised, was delivered at a cost-effective price point.
Down to earth.

by DG Sellers on Twintech Heating and Cooling
Professionally done and took care to cover all entry floors

Professionally done and took care to cover all entry floors to the house for the installers to remove the old furnace and install a new furnace.
I also made recommendations of the tankless water heater that we had installed and items to address. We did not know they also installed tankless water heaters.

by Bill, Pickering on Twintech Heating and Cooling
Proud to support this local company

Price was not the cheapest nor the most expensive of my quotes. It's the quality of the installation that makes for a good AC system. The twins' knowledge & professionalism was evident in the small details:
Very clean work. Greg made sure that the refrigerant level & temperature were correct. They reinstall the insulation & vapor barrier around the wall. The outside electrical cords were secured to the wall. Proud to support this local company. Thank you.

by Taz on Twintech Heating and Cooling
Arrived on time worked very efficiently and were very clean

Great team of guys came to do the work. Very professional. Arrived on time worked very efficiently and were very clean. They answered any questions we had without hesitation. The air conditioner works great and is so quiet. I highly recommend them and they don't try to up-sell anything right from the start.