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Furnace: Malfunctioning Thermostat?
Posted On: December 5, 2024
If you're experiencing issues with your furnace, a malfunctioning thermostat might be the culprit. Here's how to identify the problem and address it:
Signs of a Malfunctioning Thermostat
- Temperature Discrepancies: The room feels colder or hotter than the thermostat's settings.
- Frequent Cycling: The furnace turns on and off too frequently, or not at all.
- Unresponsive Thermostat: The display is blank, or the unit doesn't respond to adjustments.
- Incorrect Readings: The temperature displayed on the thermostat doesn’t match the actual room temperature.
Common Causes
- Dead Batteries: For battery-powered thermostats, this is often an easy fix.
- Dirt or Debris: Dust can interfere with sensors or electrical connections.
- Loose Wiring: Wires inside the thermostat can loosen over time, disrupting communication with the furnace.
- Outdated Model: Older thermostats may fail to regulate modern furnaces efficiently.
Troubleshooting Steps
- Check Power: Ensure the thermostat has power. Replace batteries or check circuit breakers if necessary.
- Clean the Unit: Remove the cover and gently clean any dirt or debris with a soft brush.
- Verify Settings: Ensure the thermostat is set to "Heat" and the temperature is above the current room temperature.
- Inspect Wiring: Check for loose or frayed wires, but only if you're comfortable doing so.
When to Call a Professional
If troubleshooting doesn’t resolve the issue, a professional HVAC technician can:
- Test the thermostat for defects.
- Check furnace compatibility with the thermostat.
- Install a new, energy-efficient model if needed.
Upgrading to a programmable or smart thermostat could also improve efficiency and comfort in your home.
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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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