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My Heater Blows Cold Air... Is it Broken? Or is it Another Problem?

Heating and Cooling Pros from Bensalem, PA Explain Why Your Heater May Be Blowing Cold

Bensalem, United States - November 23, 2019 / Modern Air Solutions Inc. /

Tips for Solving Heating Issues In Your Home

It is not an uncommon problem to notice that your heater is suddenly blowing cold air. Many times this requires just some quick troubleshooting, while other more serious problems may require the help of a professional. Regardless, know that you are not alone when these problems happen. There are a few reasons why it could be happening and this article will explore three of the areas you should check first.

Check Furnace Settings

One of the first places you want to look when cool air is coming out of your heater is the thermostat and its FAN setting. The problem could be that your fan’s setting is set to ON. This setting controls the blower, which is what circulates the air throughout your home. If the setting is set to ON, the blower will run 24 hours a day, 7 days a week.

furnace settings

This won’t matter if the furnace is heating the air or not. To fix this, change the setting to AUTO which makes sure that the blower runs only when the furnace heats the air.

The Furnace Could Be Overheating

There are several reasons why a furnace may overheat, but the most common one is focused on the airflow. If the furnace is unable to get enough air, it will tend to overheat. This can cause the furnace to shut down or, worst-case scenario, start a fire. There are a few steps that you should take when trying to take care of your furnace overheating.

  • overheated heaterCheck Vents - There are many instances where furniture or other household items are blocking the vents. This blockage of airflow can lead to overheating. Homeowners also need to be careful about closing their vents. Many will do this to save money or make sure that only certain rooms are receiving the heat. If more than 60% of the vents are blocked, overheating is likely to occur.
  • Inspect Furnace’s Evaporator Coil - This coil absorbs the heat from the air in your home. If it gets damaged or too dirty, your furnace will become confused. In doing so, the furnace will continuously turn off and on again, which could lead to it overheating. The evaporator coil should be checked and cleaned every year.
  • Blower Fan - The blower fan supplies the air necessary for the heat exchanger. If this becomes blocked or dirty in any way, it can contribute to the furnace overheating.

Replace Your Dirty Air Filters

Cleaning out your furnace’s air filters could be the easiest way to solve any furnace problems. If the filter is too dirty, it very easily could be blowing out cold air as a result. When an air filter is dirty, it blocks airflow over the heat exchanger, which causes it to overheat. When overheating occurs, the furnace can set off a high limit switch. As a result, the furnace burners shut off to keep the heat exchanger safe from cracking.

dirty air filters

To check your filter, simply turn off the furnace at the thermostat and peak at the filter. If it’s dirty, it should be changed and depending on your comfort level with your furnace, you may want to contact a professional to help you reset the furnace. This will also help with the purity of your home's air

About Modern Air Solutions Inc.

Since 2010, Modern Air Solutions Inc. has proven to be a quality-first heating and air-conditioning company. They strive to treat their customers fairly while always providing honest assessments of their customers’ needs. Easy scheduling and a flat-rate pricing system mean customers can expect a hassle-free experience from start to finish.

Contact Information:

Modern Air Solutions Inc.

2650 Kiansas Ave
Bensalem, PA 19020
United States

Stan Samokhin
(215) 490-3433

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