What are some indications of poor indoor air quality?
If the house seems stuffy or stale, this is an indication of inadequate ventilation. Not enough fresh air from the outside is being brought in. An indoor air quality screen of temperature, relative humidity, carbon monoxide, and carbon dioxide would provide the information you need to assess your IAQ condition. Indoor carbon dioxide concentrations should be around 800 ppm to 1,000 ppm. Concentrations greater than 1,000 ppm are an indication of not enough fresh air.
