Why Does My Furnace in Smithfield, VA, Keep Overheating?

Overheating furnaces don’t just break down; they can also drive up your energy bills or even create safety risks. When your furnace in Smithfield, VA, gets too hot, it often shuts down, leaving you in the cold until it cools off. If this sounds familiar, it’s time to figure out why your furnace keeps overheating.

Dirty Air Filter Blocks Proper Airflow

A clogged air filter is a furnace’s worst enemy. It restricts airflow, causing the system to trap heat that has nowhere to go.

Pet hair and other debris are common offenders. Swapping out your filter every one to three months can help your furnace breathe easier and stay cool.

Blower Motor Isn’t Working

Think of the blower motor as the delivery driver for your furnace to bring you warm air. When it malfunctions, heat builds up inside instead of spreading through your home. You may notice weak airflow or odd noises like a loud hum or a metallic squeal.

Addressing this issue usually requires a professional. Ignoring it could lead to a complete furnace breakdown or more costly repairs.

You Have Blocked Vents or Ductwork

Blocked vents or ducts prevent heat from escaping. Even something as simple as a couch covering a vent can disrupt the airflow. The furnace keeps working, but the heat has nowhere to go. Check all vents and ducts to ensure they’re clear and open.

Thermostat Settings Are Too High

Running your furnace at full blast for extended periods puts unnecessary strain on the system. Instead of setting your thermostat to 85 degrees to warm your house faster, aim for a steady, comfortable setting of 68 to 72.

Worn-Out Components Cause Issues

Over time, key components like the heat exchanger or fan limit switch may wear out. A cracked heat exchanger not only leads to overheating but can also leak harmful gases like carbon monoxide.

Regular maintenance is your best defense. Scheduling a tuneup each year keeps your furnace in good shape and prevents dangerous problems.

When a furnace overheats, it’s a sign that something needs attention. To address concerns with your heating system, call Atlantic Shores Heating and Cooling.

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