November 12, 2019

Why Does My Heating System Keep Turning Off?

One common problem we often hear about from our Modesto customers is that of a furnace running for a few minutes before turning off. This is called short-cycling and it’s a condition caused by a few different furnace issues. Our technicians at recommend running through this list of three items to troubleshoot a furnace that keeps turning off: 1. Dirty Air Filter A dirty air filter is the most common cause of a short cycling heater. This is because the dirt trapped in the air filter restricts the airflow into your furnace. Without reliable air circulation, the furnace’s heat exchanger can overheat, which leads to the entire unit shutting down. Freshen the air filter every 30 days to protect your furnace from overheating and shutting down during use. 2. Thermostat Problem There are a couple of thermostat issues that can cause your furnace to keep turning off. Improper placement is the biggest concern. When a thermostat is installed close to a heat source, like in direct sunlight or near a heat register, the device thinks your home is warmer than it actually is. This leads to it running for only a few minutes before shutting down. The second issue is...

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