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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:
Jul 2, 2017
Very impressed they arrive to quote even though I had forgotten to call them back to confirm date & time. They showed the day before installation to deliver the unit. Returned the next day as promised at 9am. Project was completed in a professional manner. They even fixed a few things that they noticed were not installed correctly, or to code by previous heating & air contractors we had at our residence before. Would recommend this company to everyone!
Jun 29, 2017
Greg removed old oil furnace and oil tank from basement relocated new Napoleon propane furnace to allow duct work to be rerouted to a much more suitable location. Moved air conditioner to the new furnace. Dave recommended two available grants to assist with cost. They kept to their original quoted price which was substantially lower than a competitors for the same furnace and work. They completed the work as stated when stated and left the area clean and tidy. We are very pleased with the outcome.
Jun 28, 2017
Twintech installed a Goodman furnace and ac init. Very professional install, both units are working well.
Jun 28, 2017
We had Grant and Greg Dainty quote to replace our 20 yr old furnace. I have known them for years and have had other jobs done by them ( AC and Pool Htr). The price was very reasonable and the job was completed in one day.
Jun 23, 2017
TwinTech was the right choice. Our consultation with Dave set the tone. Professional and knowledgeable, we even received a follow-up call within hours of our install completion, wow! TwinTech arrived as scheduled to install our A/C unit. Within minutes of arrival Greg noted and explained a few out of code faults on our furnace installed by another company, problems fixed, thanks TwinTech. Greg, Grant and "Subaru" Pete were meticulous start to finish. Highly recommended!
Jun 13, 2017
Twintech replaced our aging +20 yrs old Furnace & AC with the variable high efficiency Napoleon Furnace matched with the Goodman AC. Sales guy ,Dave was great, gave a no pressure estimate, explained about the Government Rebate program which they took care of completely including arranging the home energy audit. On the scheduled day Greg and his team arrived on time, did a great job and completed the same day , extremely professional and courteous, cleaned up everything , tested the system, Greg took his time to explain the setup. Very impressed with the Napoleon Furnace 9600 which did a great job in maintaining a comfortable temperature last winter and now with the hot weather the Goodman AC cooled the house in much less time than the old AC unit could ever. From start to finish Twintech were great and have no hesitation in recommending them 100%.
Jun 13, 2017
The Twintech team did an excellent job installing our new Goodman air conditioner. They were polite and professional. Greg was knowledgeable and clearly experienced. Thank you Twintech for bringing our cooling system up to current regulations. Job well done!
Jun 11, 2017
Dave from TwinTech was very knowledgeable, professional and thorough in the buying process. He helped us to identify the best furnace for our home and our budget. When we needed a new filter a year later and seemed to have a problem finding the right one, I called Dave up and he delivered a filter to me the next day! The cost was on par with other retailers, but it was this unexpected personal service that really was impressive. The furnace? Works like a charm.
May 27, 2017
Imagine, it's 5 minutes after the midnight countdown New Year's eve and the furnace quits. We called TwinTech fully expecting to leave a message and actually spoke with Greg, one of the owners! We had an immediate repair early the next morning & a new furnace within the week. We have entrusted TwinTech with all our home HVAC service needs for over 6 years. That's why this week with an opportunity to purchase a new BBQ, we called them 1st to see about a gas line install. It's chicken on the grill tonight! They are efficient, reliable, honest, hard working, and -- attentive is an understatement.
Jan 19, 2016
Wonderful customer service, starting from the job quote (Dave), to the clean install, to the follow-up. Twintech is a small company which installed my Napoleon furnace, A/C, John Wood tank, and ran the line for my gas dryer. The installation was completed as promised in one day. The work area was kept very clean, and they even took care of my old rental tank. The professionalism and wonderful customer service is second to none. They completed all of my rebate paperwork, and now I'm getting $2000 back! You will not be disappointed if you hire this company for your project.
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