Understanding Indoor Air Quality Products

Presidential Heating & Air Conditioning

Gaithersburg HVAC Contractors


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We spend about 90% of our time indoors at any given time. It’s scary to know the EPA considers indoor air pollution to be the number one environmental health issue in the United States. Therefore, understanding and improving indoor air quality is vital to our overall health.

The HVAC specialists at Presidential Heating & Air Conditioning in Gaithersburg, MD, have done extensive research on indoor air quality.  Below are items that can be found in our homes on an everyday basis, along with some solutions to improve the air quality in your environment.

Indoor Air Quality Products

Contributing Factors to Poor Indoor Air Quality

Many factors contribute to poor indoor air quality: bacteria, mold, pollen, dust mites, pet dander, and viruses. VOCs (volatile organic compounds) like air fresheners, cleaning products, and some furnishings can also pollute our indoor air. Indoor air quality products help to reduce the health risks associated with poor air quality.

Indoor Air Quality Products

There is a wide variety of air-purifying products on the market today. Each type is designed to perform a specific function and treat specific problems. Choosing the right product, or combination of products, for your needs is vital. Here’s a breakdown of the most effective air quality products available.


Air filters are designed to remove particulate matter from the air. Particulate matter includes dust, pollen, mold spores, and other allergens. Air filters trap and hold these particulates and contaminants that could affect your health and comfort. They are available in various sizes and configurations. HEPA (high-efficiency particulate air) filters are the most effective type and can remove 99.97% of particulate matter from the air.

Air Purifiers

An air purification system installed in your HVAC air duct removes pollutants and allergens before they pass through the duct and float around in your home or office. These systems attract and kill molds, bacteria, allergens, and viruses as air flows through them. They even work to reduce smoke, static electricity, and everyday odors from pets and cooking. While portable models are available, a licensed HVAC contractor installs the most effective air purification system.


Humidifiers add moisture to the air, typically in the winter months. There are different types of humidifiers, including ultrasonic, evaporative, and steam vaporizers.  Humidifiers help alleviate dryness-related problems such as static electricity and cracking of furniture and musical equipment. Adequate levels of moisture help reduce dry, itchy skin, dry nasal passage, and colds and flu. . Whole-house (or office) humidifiers can be installed as part of your HVAC system. These systems need less maintenance – a water panel change once or twice a season –  than portable models – which require daily changing and cleaning of the water tank.


High humidity isn’t just uncomfortable; it can also lead to serious problems like mold and mildew. That’s why a whole-house dehumidifier is a wise investment for any homeowner. Dehumidifiers draw in moist air and then release it back into the room at a lower humidity level.

They balance humidity levels which can lead to a reduction in respiratory infections, allergies, and asthma symptoms as well protect your wood furniture and flooring.


A whole-house ventilation system brings fresh air in from the outside. Circulating fresh air throughout your home helps improve indoor air quality and reduce the levels of dust, pollen, and other airborne contaminants. This can be especially helpful for homes with residents who suffer from allergies or asthma.

Additionally, whole-house ventilation help to reduce odors – by diluting the stagnant air -and moisture levels – preventing the growth of mold and mildew. Positive air pressure pushes allergens, chemicals, radon, VOCs, and other dangerous compounds out of the home.

Ultraviolet Germicidal UV Lights

UV Lights are mounted inside the HVAC system near the indoor cooling coil. These lights work to kill mold and bacteria spores, preventing them from taking hold and spreading throughout your home. Additionally, UV lights can help to eliminate any unpleasant odors that may be present in your air conditioning system.

All of these products help improve indoor air quality. Choosing the right product(s) for your environment and your needs is essential.  The experts at Presidential Heating and Air Conditioning can assist you in determining the right solution.

For more information about indoor air quality products for your Gaithersburg, MD, home or office, at Presidential Heating & Air Conditioning today.

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