Indoor Air Quality 

Clean air is determined by the efficiency of a filter or an air cleaner. Try our free Indoor Air Quality Assessment quiz below to get a rating on your estimated air quality!

General Information

Building Type:

Building Age:

Location Type:

Ventilation and Air Circulation

Is there a mechanical ventilation system installed? ?

A mechanical ventilation system helps to control indoor air quality by removing stale air and introducing fresh air.

Are windows opened regularly for natural ventilation? ?

Natural ventilation uses windows, doors, and other openings to allow fresh air to replace indoor air.

Is there an air conditioning system in use? ?

Air conditioning systems can filter, circulate, and regulate indoor temperatures.

Does the building have exhaust fans in bathrooms and kitchens? ?

Exhaust fans help remove moisture and odors from bathrooms and kitchens, improving indoor air quality.
Occupancy and Use

Is the building occupied daily?

Number of occupants:

Are any areas used for industrial or manufacturing processes?

Is smoking allowed inside the building?

Sources of Pollution

Are there any combustion appliances used inside? ?

Combustion appliances include gas stoves, heaters, and fireplaces.

Is the building located near major sources of outdoor pollution? ?

Major sources of outdoor pollution include highways, factories, and agricultural sites.

Are chemical cleaning products used regularly? ?

Chemical cleaning products containing volatile organic compounds (VOCs), ammonia, bleach, or formaldehyde can significantly impact indoor air quality, potentially leading to respiratory issues and other health concerns.

Are there any visible molds or signs of water damage? ?

Visible signs of mold or water damage include discolored patches on walls or ceilings, a musty odor, peeling wallpaper or paint, and any signs of moisture or condensation in affected areas.

Is there any use of air fresheners or scented candles?

Health Symptoms

Do occupants report any health issues like headaches, allergies, or respiratory problems when inside the building?

Maintenance and Cleaning

Is there a regular cleaning schedule for the building? ?

A regular cleaning schedule includes cleanings on a daily, weekly, or monthly basis, depending on the building's usage and areas.

Are air filters (in HVAC systems) replaced regularly? ?

Air filters should be replaced every 3 months to a year based on filter type and environmental conditions.

Is there routine maintenance of HVAC systems? ?

Routine maintenance of HVAC systems includes inspections, cleanings, and repairs, typically performed annually or semi-annually.
Pets and Plants

Are pets kept indoors?

Are indoor plants present?

Building Materials and Furniture

Were building materials or furniture purchased or installed recently (within the last year)?

Do building materials or furniture emit strong odors?

Additional Considerations

Is there any use of pesticides indoors?

Is the building insulated and sealed properly? ?

Check for drafts around windows and doors or look for visible insulation in attics or basements to assess insulation and sealing.

Filters have an efficiency rating called MERV.
(Minimum Efficiency Reporting Value)
MERV ratings are used to rate the ability of a filter to remove particles from the air as they pass through the filter.

The higher the MERV rating, the cleaner the air!

Read More About: Different Air Quality