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Furnace Is Not Heating Up
Posted On: October 24, 2024
If your furnace is not heating up, several potential issues could be causing the problem. Here are some common reasons and troubleshooting steps you can take:
1. Thermostat Issues
- Check settings: Ensure the thermostat is set to "heat" and the temperature is set higher than the current room temperature.
- Replace batteries: If your thermostat uses batteries, try replacing them to ensure it’s working properly.
- Calibration: Sometimes thermostats need recalibration if they aren’t reading the correct temperature.
2. Clogged or Dirty Air Filters
- Dirty air filters can restrict airflow, causing your furnace to overheat and shut down as a safety measure. Replace or clean the filters regularly to ensure proper airflow.
3. Tripped Circuit Breaker
- Your furnace may not be receiving power due to a tripped circuit breaker. Check your home's electrical panel and reset the breaker if necessary.
4. Pilot Light or Ignition Issues
- For gas furnaces: If your pilot light is out, you’ll need to relight it. If your furnace has electronic ignition, it may need troubleshooting or professional repair.
- Check for gas supply: Ensure your gas valve is open, and your furnace is receiving a supply of gas.
5. Blower Motor Problems
- If the blower motor isn’t working, the furnace won’t distribute heat. Listen for any unusual sounds, which could indicate a motor problem, and call a technician if necessary.
6. Dirty Flame Sensor
- A dirty flame sensor can prevent your furnace from staying lit. Cleaning or replacing the flame sensor can resolve this issue.
7. Blocked Vents
- Ensure all supply and return vents are open and unobstructed to allow proper airflow. Blocked vents can cause overheating and system failure.
8. Faulty Limit Switch
- The limit switch prevents your furnace from overheating. If it’s malfunctioning, the furnace may not heat up properly. A technician may need to replace the switch.
9. Gas Valve Issues
- If the gas valve is faulty, it could prevent the furnace from receiving the fuel needed to heat your home. This issue requires professional diagnosis and repair.
If the basic troubleshooting steps don’t solve the problem, it’s best to contact a professional HVAC technician to diagnose and fix the issue safely.
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See What Our Customers Are Saying:
Jul 28, 2022
On coldest night of the year our furnace quit. At 8:40 in the morning Greg arrived and gave us a diagnosis and a recommendation. By 2:30 we had a new furnace and were warm again. Great company. Great customer service. Good reasonable price.
Peter, Pickering
Jul 3, 2022
Twin tech team was very efficient and prompt. They provided a quote within hours of request and got the job done on time. No disruption to home function. We would highly recommend this team. Job well done.
Jul 3, 2022
Our furnace bit the dust, and Twintech came out to troubleshoot and diagnose the problem within a couple of hours. Mitch was super helpful, patient, and answered all of our questions. When we decided to get the furnace replaced, the crew was over first thing the next morning and did a fantastic job. Not only did they complete the job in a few hours, but they cleaned up and respected our house as they went, and answered all of our follow-up questions. I've used Twintech for our HVAC needs in the past and will continue to do so. I'd recommend them to anyone, and it feels good to support a local, family-owned business.
Jul 3, 2022
Dave and the Twintech team were fabulous from day 1 and helped us through the process to identifying a new furnace and AC unit. This was our first time through this process and Dave did a thorough job explaining all the components and was very patience answering all our questions. Dave provided great insights and fair pricing.
The Twintech team did an awesome installation. Very clean and efficient. I would highly recommended their service.
Jul 3, 2022
We had a new Amana furnace installed by Twintech and we were very pleased with the installation. It is nice to have a warm house again.
Jul 3, 2022
Excellent job. Excellent service. Competitive price. Its rare to find a company with the knowledge and professional results we have experienced with Twintech. The clean and neat installation with attention to detail and drop sheers to respect our property is a clear indication of Twintechs high level of integrity. The 1-1/2 gas line upgrade they did for our pool 3 years ago was awesome. Can't say enough. Thank-you Twintech.
Jul 3, 2022
Twitch did a great job with the installation of our new furnace. I really appreciated their honesty and I could trust what they were telling me. Another company tried to suggest significantly more work at a greater cost claiming it was necessary to meet current building code. Twintech is very fair. All staff I meet were friendly, polite and trustworthy. I would recommend Twitch for a furnace.
Jul 3, 2022
This is a professional team that's easy to deal with. I would strongly recommend them
Jul 3, 2022
Very professional firm from start to finish!
They removed the old oil tank and furnace. They installed air conditioning and a new propane furnace.
Professional installation, on time and no mess.
Very pleased with their work and would highly recommend the company. Our house is three stories so they spent the time to do all the calculations to make sure we would have great performance on each floor.
Thank you again!
Jul 3, 2022
Upon a routine yearly maintenance, it was discovered there was a leak in the heat exchanger and a I needed a new furnace. I know nothing about these things and was completely stressed out. The company I had the maintenance plan with quoted me a huge number to rent a furnace, I just wanted to cry. Then I spoke to Dave at Twintech. He was so knowledgeable and calming, provided me a fair quote and within a few days I had an amazing crew show up to my house and install my new energy efficient furnace! I have already recommended these wonderful people at Twintech to a good friend of mine. Thank you Twintech!!
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