Poor indoor air quality can cause a variety of problems. if you’ve noticed musty odors, discolored walls, and ceilings, peeling paint or condensation on your windows, there’s a chance that you have an air quality problem. Contaminated indoor air can also cause or exacerbate conditions like fatigue, asthma, and headaches. Contaminants in your heating and air conditioning system can also reduce its efficiency and lead to premature failure. Learn more.