Categories
- AC Filters
- AC Repair
- Air Conditioner Maintenance
- Air Conditioner Repair
- Air Conditioners
- Air Conditioning Services
- Air Quality
- Cleaning Tips
- Cooling
- Duct System
- Ducted Air Conditioner
- Ductless Air Conditioner
- Emergency Repairs
- Energy Costs
- Expert Help
- Fans
- FAQ
- Filters
- Fireplaces
- Fun
- Furnace Installations
- Furnace Repairs
- Furnaces
- Gas Fireplaces
- Gas Line
- Gas Line Installations
- Heat Pumps
- Heating
- Heating and Cooling
- Heating Contractors
- heating system
- Heating Technicians
- Humidity
- HVAC
- HVAC Contractors
- HVAC experts
- HVAC Noises
- HVAC professionals
- HVAC Repairs
- HVAC Service
- Insulation
- Maintenance
- Natural Gas
- Pestibulum molestieenean
- Saving Money
- Water
- Water Heaters
- Work
[BACK]
My Furnace Suddenly Stopped Working
Posted On: February 11, 2025
If your furnace suddenly stopped working, here are some steps to troubleshoot the issue before calling a professional:
1. Check the Thermostat
- Ensure it’s set to "Heat" mode.
- Increase the temperature a few degrees to see if the furnace kicks on.
- Replace the thermostat batteries if it runs on them.
2. Inspect the Power Supply
- Check if the furnace switch (typically on the side of the unit) is turned on.
- Make sure the circuit breaker hasn’t tripped; reset it if necessary.
3. Examine the Air Filter
- A clogged air filter can cause overheating and shut down the furnace. Replace a dirty filter and try restarting the system.
4. Check the Pilot Light (for Gas Furnaces)
- If you have an older gas furnace, the pilot light may have gone out and needs to be relit.
- If you smell gas, turn off the furnace immediately and contact a professional.
5. Inspect the Furnace Door
- Many furnaces have a safety switch that prevents operation if the access panel is not securely closed.
6. Look at the Condensate Drain (for High-Efficiency Furnaces)
- If the drain line is clogged, the furnace may shut down. Try clearing it out.
7. Reset the Furnace
- Turn off the furnace at the breaker, wait 30 seconds, then turn it back on.
If these steps don’t resolve the issue, it may require professional service.
[BACK]
See What Our Customers Are Saying:
Apr 10, 2019
Had new furnace installed and ran into some difficulties but the contractor responded in a timely and efficient manner - after further service calls were made, a reasonable resolution was found.
Apr 8, 2019
The work was done quickly efficiently neatly and professionally. Pleased with the service, information, product, and the company.
Apr 1, 2019
Great sales member named Dave came in told us some amazing items and how they would be priced installed an all. We couldnt believe it! The next day the ac was installed, that day one employee named Greg told us that our furnace was working way to hard and was causing us to use way too much gas. So two days later they came in an installed a new furnace!
Apr 1, 2019
Installation was done quickly and professionally. The new furnace is quiet and provides even heat.
Mar 3, 2019
They removed and discarded old furnace. Installed new furnace. Installed air intake pipe, that had never been installed by builder, no charge. Replaced loose hose on floor with hard pipe and rerouted it to drain, no charge. Almost 33% cheaper then quote from Enercare, which was the company we dealt with and had insurance with for 8 years. No yearly fee for cleaning/insurance, saves 300 a year. Courteous, professional, fast, and friendly. My wife and I have been recommending them to everyone we know and meet, and will continue to do so. Thanks for everything, Twintech!!!
Mar 4, 2019
This company was great to deal with. Our furnace went down and they installed a new furnace the next day with a lot of professionalism!
Feb 22, 2019
Finally! An honest company with highly knowledgeable and informative staff. Had a furnace service and found multiply errors in our system from an amateur installer. Very fair price to correct problems and will definitely use again.
Feb 16, 2019
Had to replace the heating & a/c unit in a condo apartment dwelling. this company recommended by the property manager and president of the condo building. found their workmanship and attention to details very good and very thorough. were able to resolve small problems and situations and happy to feel the heat in my unit. it's pricey, but happy was done by a very professional service. thank you.
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.
Related Links:
oshawa gas furnace problems, ajax furnace inspection, whitby furnace replacement, furnace repairs pickering, oshawa hvac furnaces, pickering gas furnace problems, whitby furnaces, residential furnace, pickering hvac furnace, pickering furnace service, pickering furnaces, oshawa furnace inspection, oshawa furnaces, gas furnace problems, furnace services oshawa, furnace maintenance near me, furnace repair ajax, furnace repair pickering, furnace repair oshawa, furnace replacement, furnace repairs, furnace repair, furnace installations ajax, furnace installations pickering, furnace installations oshawa, furnace inspection,