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Gas furnace not working or not igniting? Read our Gas Furnace Troubleshooting Guide to find a step by step solution for that.
Fortunately, a fair number of common furnace problems can be fixed without an expensive service call. The next time your furnace isn’t working, try these eight simple solutions first, before you shell out big bucks and wait (and wait and wait) for the repair tech to show up.
Here are nine easy tasks you can perform yourself to try and get your gas furnace—the nation’s most popular type—kicking out heat again. STEP 1: Make sure the thermostat is set to “Heat.”
A tripped circuit breaker or an off-power switch can shut down your furnace entirely. Head to the electrical panel or breaker panel, locate the furnace breaker, and reset it if it’s tripped. Also, make sure the furnace switch (often near the furnace) is in the “on” position. 4. Inspect the Blower Motor.
1. No Heat Output. When your furnace turns on but isn’t producing heat, start with the thermostat. Make sure it’s set to “heat,” not “cool,” and that the fan is on “AUTO,” not “ON.” The “ON” setting will make the blower run constantly without heating. Set the temperature a few degrees higher than the room temp to trigger a heating cycle.
Troubleshoot furnace problems step-by-step. Learn how to check the thermostat, air filter, pilot light, and listen for unusual noises to fix issues.
Find the most common problems that can cause a Furnace not to work - and the parts & instructions to fix them. Free repair advice to the DIY homeowner!
If you have already scheduled routine maintenance yet your furnace seems to be malfunctioning — e.g., blowing cold air or perhaps blowing no air at all — you might try these furnace troubleshooting tips.
If the furnace is not turning on automatically when it should, check to make sure you have the thermostat set correctly. While some thermostats will have the furnace come on automatically, others require you to toggle the switch or press a button. #2: Check for thermostat issues.
Key Insights. Identify Common Issues: Learn the primary reasons why a furnace won’t start, from gas line problems to dirty filters. Troubleshoot Safely: Get step-by-step guidance on checking your thermostat, power supply, and airflow. Know When to Call a Professional: Discover which issues signal it’s time for an expert.