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An HVAC Contractor in Albany, OR Explains the Reason for a Constantly Running Furnace Fan

So, you’ve set your thermostat to “auto” and your furnace isn’t heating your home or business—but the fan is still blowing air. This problem is a common one among homeowners and business owners who heat their spaces with a furnace, and it can be frustrating. If you aren’t very technically-minded, you might be intimidated by your heating system and feel like you don’t know where to start when it comes to fixing this kind of problem.

Thankfully, there are some simple steps that you can take to help resolve this issue and make sure that there is nothing amiss with your heating system. Of course, if you become overwhelmed at the prospect of adjusting your furnace settings, you can always get professional help from an HVAC contractor in Albany, OR who will be able to restore your system’s function and efficiency.

Checking your thermostat

Even if your thermostat seems to be calibrated properly, it’s still worth checking your settings to verify this. You should set your thermostat so that it is lower than the temperature of your room while you’re checking its calibration. Wait about five minutes for the current heating cycle to end, and then check whether the fan is still running. If your system is working properly, the fan should shut off since the thermostat is set to a lower temperature, and your furnace will turn off for a while to make up the difference. You should also check to make sure that your system is set to “auto” and that the fan is not set to “on.”

Toggling your limit switch

If you have checked the calibration of your thermostat and adjusted all of the relevant controls and your fan is still running continuously, you should move on to checking your limit switch. There should be a white button on your fan limit switch; check to see if this button is pushed in. If the button is pushed in, your fan will run regardless of whether your furnace is on or not. Pulling this switch will prevent the fan from running continuously. If you pull this switch and it doesn’t seem to solve the problem, it’s possible that there are other factors at play that are causing the issue. In this case, you should reach out to a professional HVAC contractor in Albany, OR who can inspect your system and determine the root cause of the problem.

Contact an HVAC contractor in Albany, OR

Is your furnace giving you a headache with a fan that just won’t stop blowing? Larsell Mechanical Service is here to help. We are local HVAC experts with decades of experience providing commercial, industrial and residential HVAC services to customers in and around the Albany, OR area. Our knowledge and experience have given us the skills needed to deliver outstanding installation, maintenance and repair services to each of the customers we serve. To find out more, or to get a free estimate, give our team of dedicated and experienced technicians a call today.