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Furnace: What Does Short Cycling Mean?
Posted On: December 30, 2024
Short cycling is a term used to describe a situation where your furnace turns on and off repeatedly without completing a full heating cycle. This inefficient operation not only compromises the comfort of your home but can also lead to higher energy bills and unnecessary wear and tear on your furnace.
Common Causes of Furnace Short Cycling:
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Dirty Air Filters
A clogged air filter restricts airflow, causing the furnace to overheat and shut down as a safety precaution. Replacing the air filter regularly can prevent this issue.
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Thermostat Issues
If your thermostat is located in an area that heats up quickly, such as near a heat source or in direct sunlight, it can signal the furnace to shut off prematurely. Incorrect thermostat settings or malfunctions can also cause short cycling.
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Oversized Furnace
A furnace that’s too large for your home will heat the space quickly and then shut off, only to restart when the temperature drops. This constant on-and-off cycle is inefficient and can reduce the lifespan of your furnace.
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Blocked Vents or Ductwork
Obstructions in your ductwork or closed vents can disrupt proper airflow, leading to overheating and short cycling.
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Faulty Flame Sensor
A dirty or malfunctioning flame sensor can cause the furnace to shut down as it fails to detect the burner flame. Cleaning or replacing the flame sensor can resolve the issue.
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Low Airflow
Problems with the blower motor, fan, or other components affecting airflow can lead to short cycling. Insufficient airflow causes the furnace to overheat and shut off prematurely.
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Improper Gas Pressure
Incorrect gas pressure can affect the furnace’s combustion process, causing it to turn off before completing a cycle. This issue requires professional attention.
Why Short Cycling Matters
Short cycling not only results in uneven heating and discomfort but also:
- Increases energy consumption, leading to higher utility bills.
- Puts excessive strain on furnace components, potentially shortening its lifespan.
- Raises the risk of furnace breakdowns or costly repairs.
How to Address Furnace Short Cycling
- Change or Clean Air Filters: Ensure regular maintenance to keep airflow unrestricted.
- Check Thermostat Placement: Relocate or recalibrate the thermostat if needed.
- Inspect Ductwork and Vents: Clear any blockages or open closed vents.
- Professional Maintenance: Schedule regular furnace tune-ups to ensure all components are functioning properly.
- Consult an HVAC Technician: If the problem persists, a professional can diagnose and repair complex issues like gas pressure irregularities or faulty parts.
If you suspect your furnace is short cycling, addressing the problem promptly can restore comfort to your home and protect your heating system from further damage.
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See What Our Customers Are Saying:
May 3, 2020
Reasonable price and the workmanship was prompt and timely and the employees were great to deal with.
May 2, 2020
The sales process was friendly, informative, and very consultative. They worked hard to earn our business by taking a careful look around our home to assess our needs, providing a lot of information about the product, and answering all our questions and finding the right solution for our home at a competitive price. They prepared us very well for what to expect on installation day, and the installation went very smoothly - no surprises, all very professional! They gave us a call after installation to ensure we were happy with the work. We're very happy that we chose to work with TwinTech to get our new furnace.
May 1, 2020
Twintech promptly responded to request for quotation. They were thorough and helpful in explaining options. The quote was very competitive. Installation of new furnace was very professionally completed. Excellent work.
Jan 17, 2020
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.
Jan 15, 2020
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 weve had Twintech do for us & have been very happy with the results for each. We highly recommend this company. Thank you, Mitch, Dave & Greg.
Jan 14, 2020
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.
Jan 13, 2020
The team was great! Very knowledgeable, professional and extremely helpful. A few days after install the unit didnt 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.
Jan 11, 2020
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.
Jan 10, 2020
They were on time and very professional. I'm so glad I decided to go with Twintech, thanks!
Aug 20, 2019
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.
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