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Furnace Not Working? How to Troubleshoot Common Problems Before Winter

As temperatures start to drop, the last thing you want is a furnace that won’t kick on when you need it. We know how stressful that can feel, especially right before winter weather arrives. While many heating issues require professional attention, there are a few simple checks you can make to better understand what might be going on with your system.

Check Your Thermostat Settings

Before assuming something is wrong with the furnace itself, it’s worth taking a closer look at your thermostat. Make sure it’s set to “heat” and the temperature is higher than the current room temperature. If your thermostat uses batteries, replacing them can sometimes resolve unresponsive or inaccurate readings. Even a small thermostat issue can prevent your furnace from turning on.

Make Sure Power Is Reaching the Furnace

Your furnace may rely on both electricity and gas, depending on the model. If it’s not running at all, ensure that the power switch located near the unit is turned on. You can also check your breaker panel to see if the furnace breaker has tripped. Resetting it once may help, but if it trips repeatedly, it’s best to call a professional so the underlying cause can be addressed safely.

Give Your System Enough Airflow

Airflow issues can affect how well your furnace operates and may even cause it to shut down. One of the most common culprits is a clogged air filter. If the filter hasn’t been changed in a while, replacing it can improve airflow and furnace performance. Also ensure vents throughout your home are open and unobstructed so your system isn’t working harder than it should.

Listen for Unusual Noises

If your furnace turns on but you hear banging, scraping, or squealing, those noises can indicate internal issues. While noises themselves won’t tell the full story, they can give you a sense that something mechanical needs attention. A professional can address these symptoms before they develop into larger, more expensive problems.

When to Call a Professional

If your furnace still isn’t working after these basic checks, or if anything seems unsafe or unfamiliar, the best next step is to bring in a trained technician. Heating systems are complex, and early intervention can prevent winter breakdowns and keep your home comfortable.

At Wellmann Heating & Air, Inc in Lincoln, NE, we’re here to help keep your home warm and worry-free all season long. If your furnace isn’t working properly or you’re preparing for winter, contact us today to schedule expert heating service.