6 Reasons Your Furnace Is Not Blowing Hot Air

In some parts of the United States, it is natural for winter temperatures to drop below zero. If you have not maintained your furnace all year or are dealing with an older system, there may be several reasons as to why your system isn’t providing the comfort and efficiency it once did. If your furnace is blowing hot air, it probably needs repair.

Reasons Your Furnace Is Not Blowing Hot Air

Look for the signs below and search for ‘furnace repair near me’ to find the best services to get it fixed.

  • Overheating

Overheating does not indicate that your furnace is broken. Rather, it is a safety feature to stop a fire and explosion when the system is exhausted. With age, the peak performance of your furnace starts to fall, and it frequently overheats if you don’t follow regular maintenance. Also, the internal mechanical components can break down anytime with slight overwork causing several serious issues.

Checking for air filters and blower motor will also ensure that the air passage is clear and no debris is blocking the warm air from flowing through your house.

  • Faulty Ductwork

The cold air from your furnace can result from cracks and holes in your ducts, through which warm air leaks. It is wise that you inspect the duct network for leaks and loose corners, leading the warm air to escape. The debris in the ducts can block airflow leading to furnace overheating and serious heater breakdown.

  • Dirty Filters

For healthy and clear air, you need clean air filters. If you don’t remember the last time you cleaned the air filters, do it now. Over time, pollutants, allergens, dust, dirt, debris, and moisture, clog the filters. Make a note to clean the filters every three weeks and to replace them every six months.

  • Wrong Thermostat Settings

The first checkpoint of your furnace service is the thermostat. Before you call for our HVAC expert, check the thermostat settings. If the fan setting is ‘on’, switch it to ‘auto’ to get hot air again. Next, check if the temperature setting is some degrees higher than your home temperature. Set the desired temperature, and the heating will resume. Lastly, check and replace the batteries if needed.

If none of the given points work for your furnace, do not wait anymore and call for professional help.

  • Malfunctioning Pilot Light

Your gas furnace often does not fire up due to a faulty ignition sensor or pilot light. This sensor is always supposed to stay on, so the furnace ignites and blows out heat. You can try cleaning the pilot light by referring to the manual or checking the gas supply line to get the heat back.

  • Blocked Vents And Registers

Like the air filters, blocked vents and registers can disrupt the warm air supply, making you feel that one room is colder than the other. When this air is not distributed and trapped inside the vents, your furnace will produce no more heat and might break down. Also, check the registers if they are closed by accident.


Are you looking for HVAC contractors in Cleveland? Well, search no more. Contact E & M HVAC Inc. via call or email. Schedule your appointment today and save more with our annual maintenance and financing plans. We provide premium services. Reach out to us at the earliest convenience.

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