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My Furnace Does Not Produce Enough Heat
Posted On: December 29, 2024
If your furnace is not producing enough heat, there could be several potential issues causing the problem. Here’s a step-by-step guide to help you identify and resolve the issue:
1. Check the Thermostat Settings
- Ensure it's set to "Heat" mode: Sometimes, the thermostat might be set to "Cool" or "Off."
- Verify the temperature setting: Make sure the set temperature is higher than the current room temperature.
- Check the fan setting: Ensure it is set to "Auto" or "On." If it's set to "Auto," the fan runs only when heating.
2. Replace the Air Filter
- Inspect the air filter: A clogged or dirty air filter can restrict airflow, reducing the furnace's efficiency.
- Replace if necessary: Install a clean filter and check if the heating improves.
3. Inspect the Air Vents and Registers
- Ensure vents are open: Closed or blocked vents can reduce heat distribution.
- Remove obstructions: Check for furniture or objects blocking airflow from the vents.
4. Check the Pilot Light or Ignition System
- Pilot light (older furnaces): Ensure the pilot light is lit. If it’s not, follow the furnace’s manual to relight it.
- Electronic ignition (modern furnaces): If the ignition system is malfunctioning, it may need repair or replacement.
5. Inspect the Blower Motor
- Listen for unusual noises: Grinding or screeching noises may indicate motor issues.
- Check for operation: If the blower isn’t running, it might need professional servicing.
6. Clean the Flame Sensor
- Dirty sensor: A dirty flame sensor can cause the furnace to shut off prematurely.
- Solution: Turn off the furnace and gently clean the sensor with a soft cloth or fine sandpaper.
7. Look for Blocked or Leaky Ducts
- Inspect ducts: Check for visible blockages or leaks in the ductwork.
- Seal leaks: Use duct tape or mastic sealant to patch small leaks.
8. Check Fuel Supply
- Gas furnaces: Ensure the gas valve is open and there is no interruption in the gas supply.
- Oil furnaces: Verify there’s enough oil in the tank.
9. Check for Error Codes
- Modern furnaces often display error codes on the control panel. Consult your furnace manual to decode and address any displayed errors.
10. Call a Professional HVAC Technician
- If unresolved: If none of the above steps resolve the issue, it’s time to call a professional. A certified HVAC technician can diagnose and fix complex issues, such as a malfunctioning heat exchanger, gas valve, or control board.
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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.
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