3 Common Reasons For Home Furnace Problems

Posted on: 13 January 2022

Furnaces are great residential heating devices because of their durability, low operating noise, high efficiency, and compatibility. However, you should also be aware of the common furnace problems to stay on top of repairs.

Here are three common problems that your furnace can run into that require furnace repair.

Clogged Air Filters

Clogged or dirty air filters may make your furnace strain. The filter's job is to block allergens, dust, or other debris and keep the air in your home clean. A dirty filter can drastically limit the air your furnace gets, hence reducing its efficiency.

Filters are different, but it is advisable to replace them every few weeks. One key indicator that you need a new filter is that your furnace may not be heating the air efficiently. Failure to change your filter can affect other parts like your limit switch and reduce the overall lifespan of your heating system.

Dirty Ductwork

Air filters are designed to keep dirt, pet dander, or hair from the air ducts. However, some parts of the furnace may not be protected by the air filter, and air particles may still find their way through. This problem could eventually affect the efficiency of your system.

Inspect your air ducts from time to time for any signs of dirt. You can perform these steps yourself to ensure your ductwork is free of dirt:

  • Open the vent cover and check if there is any matted dust or debris.
  • Inspect the return air registers.
  • Check the air filter, and if it's clogged, there may be more dust settled or built up in the air ducts.

If your furnace doesn't seem to work as it used to, your ductwork might be the culprit. To be certain, place your hand in front of the vents to feel if your furnace blows any air. If little or no air comes out, call a furnace repair specialist for further in-depth solutions.

Thermostat Issues

Several issues can cause your thermostat to malfunction. You have to perform several inspection steps to figure out the real cause.

First, make sure your thermostat is far from any heat source or sunlight. If you have it in direct sunlight or close to any heat source, the thermostat may register a false reading. As a result, the furnace may not give off the heat that your home requires.

Also, check the thermostat for grime buildup. Excess dirt may affect how it gauges the temperature in your home. Of course, you can always clean the thermostat, but a furnace repair technician can always help you if you feel there is a risk of greater problems.

Lastly, older mercury thermostats need to be level for the heating system to work. Over the years, the shifting of your house may offset the thermostat's position rendering it useless. Consult a furnace expert to see if your thermostat is too old because, like every furnace component, your thermostat needs to be replaced when it ages.


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