The Top 8 Factors That Determine Indoor Air Quality

Presidential Heating & Air Conditioning

Gaithersburg HVAC Contractors


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With summer quickly approaching, you should be aware of these 8 factors that determine the indoor air quality of your home.

The Top 8 Factors that determine Indoor Air Quality infographic with text below

The top 8 factors that determine indoor air quality:
The temperature of your home is one of the larger factors that directly influences your comfort. In the summer, you want to keep cool. In the winter, you want to keep warm. Uncomfortable temperatures exacerbate humidity or be symptomatic of larger issues connected with the air quality of your home.


Poor ventilation can make a home feel stuffy or stagnant. The constant circulation of contaminants, as well as foul odors, are often a result of poor ventilation.


Too much humidity and too little humidity can cause the air quality of your home to diminish. Too much humidity, and the risk of molds, fungi, and bacteria increases. Too little humidity, and you may suffer from dry skin and itchy eyes. Balance of humidity is key for keeping your home’s air quality healthy and comfortable.

Pets(and Pests!)

All kinds of animals and insects directly affect the air quality of your home. Some carry dander, or track-in pollen, while others are direct sources of allergens.


The existence of fungi, mold, and bacteria, negatively effect the indoor air quality of your home. These microbes can spread viruses, exacerbate allergies, and cause asthma.


When you use chemical cleaners and air fresheners, you’re spreading those chemicals throughout your home. Often, these chemicals contain Volatile Organic Compounds which can cause severe health concerns.

Suspended Particles

Ultra-fine or pulverized particles that drift throughout your home and collect with dust are known to cause respiratory complications. These particles are considered indoor air pollutants as they contain Volatile Organic Compounds and are dangerous to inhale.


This naturally occurring gas is toxic and can leak into your home through cracks in the foundation. Much like carbon monoxide, it is colorless and odorless. Continued exposure to Radon is known to cause lung cancer.

For more information on indoor air quality, visit our blog.

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