Reasons Your AC Might Leak

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Reasons Your AC Might Leak

Posted On: March 18, 2024

Reasons Your AC Might Leak

An air conditioning (AC) unit leaking water can be a sign of various issues. Here are some common reasons why your AC unit might be leaking:


  1. Clogged Drain Line: Over time, algae, mold, and debris can accumulate in the drain line, causing it to become clogged. When this happens, water can back up into the unit and leak out.


  2. Dirty Air Filter: A dirty or clogged air filter can restrict airflow over the evaporator coils, causing them to freeze and eventually thaw, leading to excess water that may leak from the unit.


  3. Frozen Evaporator Coils: If the refrigerant levels are low or if there is restricted airflow, the evaporator coils can freeze. When the ice melts, it can overwhelm the drain pan and lead to leaking.


  4. Cracked or Damaged Drain Pan: The drain pan underneath the evaporator coils can crack or become damaged over time, causing water to leak out of the unit.


  5. Improper Installation: If the AC unit was not installed correctly, it may not be level. This can cause water to pool in certain areas and eventually leak out.


  6. Blocked Condensate Line: The condensate line that carries water away from the unit can become blocked by debris or algae growth, causing water to back up and leak out.


  7. Refrigerant Leak: A refrigerant leak can cause the evaporator coils to freeze, leading to excess water leakage when the ice thaws.


  8. Dirty Coils: Dust and dirt buildup on the evaporator or condenser coils can insulate them, preventing proper heat exchange and leading to freezing and subsequent leaking when they thaw.


  9. Over-sized Unit: If your AC unit is too large for the space it's cooling, it may cycle on and off frequently, leading to excess condensation and potential leakage.


  10. Broken Pump: If your AC unit has a condensate pump to remove water, it could malfunction or break, causing water to back up and leak from the unit.


  11. High Humidity: In extremely humid conditions, your AC unit may produce more condensation than usual, potentially overwhelming the drainage system and causing leaks.


Regular maintenance and inspection of your AC unit can help prevent many of these issues. If you notice water leaking from your AC unit, it's essential to address the problem promptly to prevent further damage to your system and your home.



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See What Our Customers Are Saying:

by Furnace And Humidifier Install on Twintech Heating and Cooling

Dealing with Bob and the installation crew was a pleasure. They took the time to explain everything. What would benefit us the most and the price difference. They were in and out in a reasonable time frame and fit us in within a couple days of original meeting. Quality of work is excellent as well.

by Private User on Twintech Heating and Cooling

A pleasure dealing with Bob ,Spencer and Mitch . They are professional and they also observe the covid 19 precautions . Bob explained the whole process and got the new furnace up the next day . Highly recommend

by Gary Monson, Ajax on Twintech Heating and Cooling

Would like to thank TwinTech for their quick response to our furnace repair. We used TwinTech to install a new furnace and AC a few years
back. Our furnace started to have problems early in the evening of extremely cold night. Contacted TwinTech and they were able make a service call later that evening. They got the furnace going and came the next day to replace a part. The part was under warranty and there was
no charge for either service call!
We are extremely happy with their customer service and would highly recommend them.
Gary & Kelly

by Paul, Toronto on Twintech Heating and Cooling

This is the second time we have had Twintech to our house. A couple of summers ago they were in for an issue with our air conditioning. This time it was our furnace having an issue. It was shutting off randomly and not coming back on. Greg came right away and took the time to investigate thoroughly and explain what was going with the furnace. Both times I have been thoroughly impressed with their speed, customer service, and quality of work. I HIGHLY recommend Twintech.

by Stan, Courtice on Twintech Heating and Cooling

Based on good reviews I hired Twintech to look at a small leak on my 5yr old water heater, they sent an employee to inspect and give a quote to repair which would total about $300. 100 for the initial call/inspection and another $200 for the repair. I agreed to the repair and they showed up on the agreed date to do the repair, it was to replace a dip tube but after removing the old one he couldn’t get the new one in. After about half an hour of trying he realized he had gotten the wrong part which he blamed his supplier for. Then told me it would be about a week to get this custom order part and would mean I would have no hot water for a week, so I went from a small insignificant leak to no water heater. I can’t believe that an experienced professional didn’t know these had custom order parts and basically left with my water heater disassembled and leaking water all over my basement. I would never hire this company for any projects ever again. I ended up having to buy a new water heater and didn’t even receive an apology from the company for their incompetence.

by Private User on Twintech Heating and Cooling

Based on good reviews I hired Twintech to look at a small leak on my 5yr old water heater, they sent an employee to inspect and give a quote to repair which would total about $300. 100 for the initial call/inspection and another $200 for the repair. I agreed to the repair and they showed up on the agreed date to do the repair, it was to replace a dip tube but after removing the old one he couldn’t get the new one in. After about half an hour of trying he realized he had gotten the wrong part which he blamed his supplier for. Then told me it would be about a week to get this custom order part and would mean I would have no hot water for a week, so I went from a small insignificant leak to no water heater. I can’t believe that an experienced professional didn’t know these had custom order parts and basically left with my water heater disassembled and leaking water all over my basement. I would never hire this company for any projects ever again. I ended up having to buy a new water heater and didn’t even receive an apology from the company for their incompetence.

by Private User on Twintech Heating and Cooling

Extremely happy.
So we were in no rush to replace our old units and took the time to do some research and get a number of quotes.
Twintech came in at around the middle of the pack for price but what convinced us to go with them was Bob, the representative that came to our house. Bob was by far the most professional of all the reps that we met with. He took the time to explain everything, what would work best for us and why. He really did seem very knowledgeable and enthusiastic about his stuff.
As promised on the day of install the crew showed up on time and got to work with minimal impact on us
..they were professional, clean, tidy and got the system up and running ahead of schedule...they made a couple of adjustments to the system to optimize it for our house.
The crew left the house clean and tidy.
Bob the rep showed up to check in and give us a few tips ..
It's been a week since install and all is good.
Our overall experience with Twintech has been excellent from start to finish and I wouldn't hesitate to recommend them.
Thank u.

by Private User on Twintech Heating and Cooling

It was a refreshing experience interacting with the Twintech team. From Bob, the sales consultant, who articulated in layman's terms all the options available and reasons for making any selection. This was done without the prevailing pressure tactics so commonplace today.

Before proceeding Mitch, the technician, at our request conducted a service check on our 30 yr old furnace. His report was positive indicating no urgency to replace it. Again no pressure tactics.

Three days after first meeting with Bob, the installation team of Greg and
Spencer completed the installation within the planned time frame.

A very professional, courteous and transparent team which delivered on their promise. I highly recommend Twintech.

by Private User on Twintech Heating and Cooling

Initial contact with sales resulted in an immediate response, which led to a timely installation. Both sales and installers were all very professional. I have no hesitation in recommending TWINTECH.

by Private User on Twintech Heating and Cooling

I had a great experience with TwinTech. The company offered a reasonable quote, and performed a quick and clean installation. The installer Greg was experienced, professional and courteous. He explained the services he performed and gave recommendations on maintain the new furnace.

The salesman Bob was honest
and professional and educated me on how to achieve optimal performance.

All communication from them was quick and they came the following day. I was pleased with the service and would recommend them.

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