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Unusual Noises From Furnace
Posted On: November 28, 2024
If you’re hearing unusual noises from your furnace, it could signal a problem that needs immediate attention. Here's a guide to some common noises and their potential causes:
1. Banging or Popping
- Cause: This often indicates delayed ignition or expanding ductwork. Delayed ignition occurs when gas builds up before igniting, creating a mini-explosion. Expanding or contracting ducts can pop as they adjust to temperature changes.
- Solution: Have a professional inspect the burners for buildup or check the ductwork for loose connections.
2. Squealing or Screeching
- Cause: These high-pitched noises may be due to a loose or damaged blower belt or bearings that need lubrication.
- Solution: Tighten or replace the blower belt and lubricate moving parts as needed.
3. Rattling
- Cause: Loose panels, screws, or components inside the furnace can create a rattling sound. It could also indicate a cracked heat exchanger, which is a serious issue.
- Solution: Tighten loose components. If the heat exchanger is cracked, call a technician immediately to prevent carbon monoxide leaks.
4. Booming
- Cause: A loud boom is usually linked to gas buildup in the ignition system or dirty burners.
- Solution: Have a professional clean and inspect the burners to ensure proper ignition.
5. Humming
- Cause: A low humming sound might indicate an electrical issue with the blower motor or transformer.
- Solution: Check for loose wiring or call an HVAC technician to diagnose the problem.
6. Clicking
- Cause: Repeated clicking might be caused by a failing ignition system or a relay that isn’t working correctly.
- Solution: Test the ignition system and inspect relays for faults.
7. Whistling
- Cause: Whistling noises are often due to restricted airflow caused by dirty filters or closed vents.
- Solution: Replace the air filter and ensure vents are open and unobstructed.
Why You Shouldn’t Ignore These Noises
Unusual furnace noises often point to underlying issues that could worsen over time, leading to higher energy bills, system breakdowns, or safety hazards like carbon monoxide leaks.
If your furnace is making any of these noises, it’s best to call an HVAC professional for a thorough inspection and repair. Regular maintenance can prevent many of these problems, ensuring your furnace runs quietly and efficiently.
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See What Our Customers Are Saying:
Feb 13, 2019
Fantastic team. Completed the job as per the specifications and in under 3 hours. Highly recommended Twintech.
Jan 30, 2019
During the summer, I previously hired TwinTech to replace my air conditioner when it failed. They did an excellent job so when I decided to proactively replace the furnace I contacted them. The furnace I had was 22 years old and showed signs of internal leakage. It still worked but rather than wait to have it fail in cold weather, I decided to purchase a higher efficiency model before it failed and take advantage of energy efficiency rebates. TwinTech offered very useful advice on the make and model of furnace to choose including high efficiency and variable speed motor. The price was reasonable, TwinTech arrived at the allotted time, installed the new furnace (including some re-routing of exhaust lines since the existing ones were too close to other vents), removed the old furnace, tested the installation and cleaned everything up. Overall, it was a good experience, they did a great job and the new furnace is working well.
Jan 26, 2019
Greg came over at 9:30pm to rescue my daughter and I from a horrible experience with Enercare that evening. He was professional. Kind. And got us what we needed quickly and at an afford price. I would 100% recommend calling on Greg and his team for any of your heating and cooling needs in the future!!
Jan 24, 2019
Installed a great hot water heater when our old one failed. When my furnace died during cold weather they showed up quickly and my house was warm before my wife got home. :)
Jan 14, 2019
I dont usually right reviews but when you receive service like this I felt it was a must. Honest and fair. I Have 4 children and on Xmas eve my furnace stopped working and a gentleman came out and got me up and running so at least we would have heat for the holidays. As promised he would replace my furnace early in the new year. The job was completed on time, great price for quality furnace and extremely clean and professional job. Would have never known anyone was in the house. Not a spec of dust or mess from lugging out an old rusty furnace. If you have any ac or heating concerns twintech is your only option. I was royally impressed with and Im sure you will be too.
Jan 14, 2019
Class Act ! These guys were professional right from the quote stage through to installation. They know their stuff and took their time to help educate me. They take pride in their work and it shows. I would recommend TwinTech Heating and Cooling to anyone. Keep up the great work !!!
Dec 28, 2018
This Company is terrific. No high pressure sales and they deliver exactly what they promise to deliver. The new furnace is great and we now get consistent temperatures throughout the house. The installers were great and very efficient and completed the work on schedule on the promised day. Everyone representing this company was very aware of their presence in our house and worked diligently to keep our home as uninterrupted and as clean as was humanly possible. We did not need to go around the house to clean up after they left, what a nice surprise. We have had follow up by the company to ensure everything is to our satisfaction. How unusual in today's environment. The impression left by Twintech is that they care about us and our home. This is so refreshing in today's high tech world. Out thanks go out to Dave in sales and G, G, and P (the installers).
Dec 21, 2018
They were Timely and professional. They were very Knowledgeable with answering all of my questions.
Dec 23, 2018
The entire process was prompt and professional, from the initial quote to the installation of the new furnace. The team installed the new furnace and removed the old one in approx. 4 hrs. The guys were very knowledgeable and gave me lots of information. I have used Twintech before for a new A/C installation and new I was in good hands.
Dec 9, 2018
The overall experience dealing with this company was great from start to finish when getting a new furnace and ac this year. Everything was clearly explained to us during our consultation with Dave and there were no surprises with added costs. The work was done as expected and their response time to inquiries were very timely generally within a few hours or less. They are all very professional and was a pleasure to do business with them. Highly recommend to anyone looking for honest quality professional service.
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