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Wednesday, November 05, 2014

The simplest way to improve the air quality indoors, lower heating costs and extend the life of your home's HVAC system is to change your furnace filter whenever it's covered with dust. The filter may not seem like a key component of the heating system, but in reality, it's an essential part.

Indoor Air Quality

The air filter traps common airborne particulates like pollen, pet dander and dust that can cause allergic reactions. A clean filter keeps more particles out of your home's air, and it's an inexpensive and effective way to increase the health and comfort for anyone who suffers from allergies or asthma. 

Lower Energy Costs

When the air filter is covered with dust, less air enters the blower compartment, which drives up energy costs. Reduced airflow increases the system's running time because it takes longer for it to reach the thermostat's setting. If the furnace has been used with a dirty filter over a prolonged period, it's possible for dust to cover all the parts, including the heat exchanger.

Dust acts as insulation on the heat exchanger, inhibiting the heat transfer process that warms the air, increasing operating costs even more. 

Increased System Life

When you change your furnace filter when it's covered with dust, you're increasing system life. Dirt inside the blower compartment covers all the exposed parts, making them retain heat that they weren't designed to do. While a professional tune-up will help you start the heating season with a clean furnace, forgetting to change the air filter will eventually negate the benefits of routine HVAC maintenance.

Over time, the dust covering the heat exchanger may cause it to develop cracks that can necessitate a complete furnace replacement. These cracks can emit carbon monoxide (CO) into your home's air. Besides being exposed to potentially lethal CO, repairing it may be more costly than replacing the furnace altogether. 

To learn more about how and when to change your furnace filter, contact We provide a network of top-notch HVAC services providers for homeowners throughout the Chicago area, northwestern Indiana and southeastern Michigan. 


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