Furnaces run too hot for various reasons, but it's most often because there's a problem with the blower motor that regulates hot air circulation throughout the home. By recognizing blower-related overheating warning signs and scheduling timely furnace repair services, you’ll maintain a safer home with a reduced risk of fire and carbon monoxide leaks. Here's a look at what your appliance is trying to tell you.

How to Know Your Furnace Is Overheating

1. Odd Noises

Strange noises, such as a humming sound, may indicate an overheating problem. A loud hum often means the blower motor’s expiration date is near or that lubrication is needed. 

Low amperage is another reason for humming. This can be caused by dirt and dust clogging up the air filter. A dirty filter allows debris to get inside the appliance and damage its parts, and the restricted airflow can add strain to the blower motor. If replacing the filter doesn't get rid of the noise, call for furnace repair as soon as you can.

2. Burning Odors

If you notice burning smells emanating from the heating vents, the furnace may be stressed. While it’s normal for the appliance to produce odors when it’s turned on in the autumn because of debris burning off, continual burned smells tell you the blower motor is overheating and will eventually shut down. Whether the issue is due to excessive debris, lubrication, or old age, service is necessary to prevent this.

3. Frequent Cycling 

Pay attention to how often the furnace turns on and off, which is known as cycling. Most modern heating appliances feature safety mechanisms that shut their heat exchangers off when they get too hot, so constant cycling may mean the furnace is getting too hot on a regular basis. A malfunctioning blower motor is a likely culprit, which will expend more energy and increase utility bills in addition to putting the furnace at risk.

Request furnace repair services from Arc Electric Air Conditioning and Heating to enjoy a safe, cozy home this winter. The heating contractors and electricians provide residential, commercial, and industrial services to clients throughout the northern Kentucky and Greater Cincinnati, OH, area. Call the family-owned company with a 60-year history today at (859) 441-7161 to schedule a free in-home estimate and visit the website for the latest specials. Get more home maintenance tips on Facebook.