Maintaining High Indoor Air Quality Standards

Indoor Air Quality StandardsBoth the World Health Organization and OSHA set standards for indoor air quality in residential homes and businesses alike. These standards are important, as poor air quality can greatly affect the safety and comfort of people inside the area. McQuerry's 24-Hour Heating, a St. Louis, MO HVAC company, can help you meet indoor air quality standards in a number of different areas, but first you must know what contaminant is causing the air quality issue. Here are some common substances that can affect indoor air quality.

Mold or Organic Matter

Buildings where the walls or ceilings have been exposed to moisture run the risk of growing mold colonies. There are some types of household molds that actually release toxic spores that can cause long term respiratory health problems. Many people are also allergic to the mold growths.


Smoke can be caused by an improperly ventilated stove or heater, or by simple cigarettes and cigars. Smoking cigarettes indoors can actually cause a build-up of smoke inside. You may not notice it if the smoke is only introduced into the air one cigarette at a time, but over time cigarettes can cause carbon monoxide to accumulate in the inside air.

Dust and Particles

This is one of the most common causes of poor air quality indoors. Dust collects in vents connected to air conditioning or heating units. When these units are switched on, they may expel the particles into the air. Some dust in the home is unavoidable, but significant levels can negatively affect people’s health.


The most common gas that affects indoor air quality standards is radon. Radon is caused by the decay of radioactive particles released by some types of building materials. In significant enough doses, radon gas can cause lung cancer and other serious problems.

To deal with an issue that affects your indoor air quality standards, call McQuerry’s 24-Hour Heating at 636-225-0087 today.