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What to Do When Your Furnace Starts Leaking
Posted On: January 23, 2025
A leaking furnace can be a concerning issue, but addressing it promptly can help prevent further damage to your home or HVAC system. Here’s what to do if your furnace starts leaking:
1. Turn Off the Furnace
- Safety First: Shut off the furnace to avoid electrical hazards or additional damage.
- Locate the power switch near the furnace or turn it off at the circuit breaker.
2. Check the Source of the Leak
- Condensation Issues: Modern high-efficiency furnaces (with an AFUE rating of 90% or higher) produce condensation. If the drainage system for this condensation is clogged or broken, it can lead to leaks.
- Humidifier Leak: If your furnace is equipped with a built-in humidifier, it could be the source of the leak if there's a clog or crack in the water line.
- Internal Components: Older furnaces or mid-efficiency models that don’t produce condensation may have issues like leaking heat exchangers.
3. Inspect the Drain Lines and Pan
- Check the condensate drain line for clogs or cracks. Over time, debris can block the line, causing water to back up and leak.
- Examine the drain pan beneath the furnace. If it’s cracked or full, it could be the cause of the leak.
4. Clear Any Clogs
- Use a wet/dry vacuum or a thin wire to clear out any blockages in the condensate drain line.
- Clean the drain pan and ensure it’s properly positioned.
5. Tighten Connections
- If the issue is related to loose hoses or pipes in the furnace, tighten the connections securely to stop the leakage.
6. Address the Humidifier
- Inspect the humidifier water lines for cracks or blockages and replace damaged components if necessary.
7. Call a Professional
- If you cannot determine the source of the leak, or if the issue persists, contact an HVAC technician to assess and repair the problem. Delaying professional help can lead to more costly repairs or damage to your home.
8. Prevent Future Leaks
- Regular Maintenance: Schedule annual furnace inspections and tune-ups to ensure everything is functioning properly.
- Keep Drain Lines Clear: Periodically clean and inspect the condensate line and pan to prevent buildup.
- Replace Air Filters: Dirty filters can reduce airflow, causing condensation to accumulate where it shouldn’t.
By addressing the leak early, you can avoid potential damage and ensure your furnace continues operating efficiently.
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See What Our Customers Are Saying:
May 13, 2020
We are very happy with our new furnace. The service was excellent the guys worked 6 hours straight through and there was no mess at all they took the old furnace boxs etc with them they then explained everything to us they were very helpful and pleasant , when we need a new air conditioner we know who to call!
May 12, 2020
The crew from sales to installation was very professional and had great attention to detail
May 11, 2020
We couldnt have been more impressed with Twintech - from our first service call with Mitch who took the time to thoroughly diagnose the issue with our furnace, to Dave who proposed a well thought out solution to meet our needs and finally Greg and team who acted quickly to install given we had no heat.
We did our due diligence by soliciting quotes from alternate providers and were shocked and disappointed by the aggressive and manipulative tactics used.
Twintech was honest in their approach, detailed in their product knowledge, reasonably priced, diligent in their follow-up and valued our business.
Well done Twintech! You made this a positive experience for us and our new furnace works beautifully!
May 10, 2020
We recently purchased an Amana high efficiency furnace and humdifier through Twintech. The work was completed very professionally and the quality of the workmanship was high. There was some additional sheet metal work required to complete the installation, which they were able to complete themselves. Overall I am very pleased with the work and would highly recommend Twintech for a furnace replacement.
May 9, 2020
We were very pleased with every aspect of the work that was done. They were very professional and polite. They arrived when they said they would and job was completed on estimated time
We would highly recommend them to whoever needed a recommendation
We have a very large dog and they were very understanding and respectful of him being around
May 8, 2020
The blower on our furnace stopped working leaving us with a cold house. Dave from TwinTech responded immediately to our HomeStars service request. From beginning to end Dave was nothing but helpful, friendly and professional, he did a great job of walking us through the quote and scope of work.
The replacement of the furnace went smoothly. The Guys did a great job, everyone was very friendly and polite. There were no hiccups, or unexpected costs. The only surprise was they left the work area cleaner than it was before they started.
Was a great experience with the whole TwinTech team. Its been a couple of months since the new furnace has been installed and its working great!
May 7, 2020
I heard about TwinTech when researching new furnaces at furnaceprices.ca. After contacting them about my broken down furnace, Dave came to my house the next day to assess my situation and requirements for a new furnace. He recommended one that had stainless steel heat exchangers which sold me since my previous furnace had issues with a rusted secondary heat exchanger that had to be replaced. Dave also set me up with an appointment with an energy audit company so that I could take advantage of a rebate to help improve the energy efficiency of my home and get some money back. A few days later, Greg, Grant, and Mitch came to install the new furnace and remove the old one. When delivering and removing the furnaces, they were very careful not to damage my floors and walls, and even laid out red carpeting to protect the floors. They were very friendly and professional. The installation was completed in the time they said it would take and they cleaned up their work areas. Within a week, Dave called to follow-up to see how everything was going. I have already recommended them to several friends and family members who may need new furnaces soon.
May 6, 2020
Twintech did a great job, from Dave the Sales Rep to the Office staff and The Professional Technicians who did the installation. They were professional, courteous, knowledgable and informative. From beginning to follow up we were completely satisfied with everything. Thanks Again. Sincerely The Laytons
May 5, 2020
Great product, great service, great follow-up. The Twintech Heating and Cooling arranged removal of my existing oil tank and they installed the new gas furnace Amana (made in USA). I am very happy with the final result and support I received throughout the process. My thanks go to the entire Twintech team for their professionalism, great communication and follow-up.
May 4, 2020
We've had Twintech provide us with work in the past, for an inground pool heater and required rough-in for a new gas stove. More recently they provided the same friendly, professional, timely and clean installation of our new furnace.
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