Is your home feeling chilly despite the thermostat being set to a toasty temperature? Before you panic and call for professional help, let's uncover the 5 common furnace repairs for your furnace and how you can potentially fix it yourself.
1. Thermostat Troubles
The first culprit to investigate when your furnace refuses to kick in is the thermostat. A simple issue like dead batteries or improper settings could be the root cause. Start by replacing the batteries and ensuring that the thermostat is set to 'heat' and programmed to your desired temperature. If this doesn't solve the problem, it might be time to consider a thermostat replacement.
2. Clogged Air Filters
A common reason for furnace malfunction is dirty air filters. Over time, filters can become clogged with dust and debris, obstructing airflow and causing the system to overheat, triggering a safety mechanism to shut it down. Regularly replacing or cleaning your air filters every 1-3 months can prevent this issue and keep your furnace running smoothly.
3. Ignitor Problems
For gas furnaces, a faulty ignitor can be the reason behind the lack of heat. If you're comfortable doing so and your furnace has a pilot light, check to see if it's lit. If not, follow the manufacturer's instructions to relight it. If the pilot light continues to go out, there might be an underlying issue such as a malfunctioning thermocouple that requires professional attention. Most newer furnaces have a HSI or Hot Surface Ignitor that require 120 volts which may need a service tech to properly diagnose.
4. Blocked Vents or Ducts
Ensure all the vents and registers in your home are open and unobstructed. Blocked vents can disrupt the airflow and cause your furnace to shut down. Additionally, check for any obstructions in your ductwork. Sometimes, items stored near the furnace can accidentally cover vents, leading to airflow issues.
5. Ignition System Failure
If your furnace has an electronic ignition and it fails to ignite, it could be due to a faulty igniter or flame sensor. These components can wear out over time and may need to be replaced. Carefully refer to your furnace manual for guidance on troubleshooting and replacing these parts or contact a professional for assistance if needed.
By addressing these common issues, you might be able to troubleshoot and resolve the problem preventing your furnace from turning on and enjoying a warm, cozy home again in no time.
Remember, if you're ever unsure or uncomfortable with performing these repairs, it's always best to seek help from a professional HVAC technician. At NES Plumbing, Heating and Cooling we are here to provide our customers with honest and upfront repairs and recommendations.
Stay warm and cozy this winter!
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