Healthy Cooling Systems

I once compared conditions in 300 randomly selected homes I inspected as a home inspector to 600 “sick homes” I inspected as an indoor-air-quality professional; these were houses where occupants were suffering from asthma and/or allergy symptoms. About 19% of the control houses had central A/C, but 37% of the “sick homes” had central A/C—thus the sick homes were almost twice as likely to have central air conditioning. The installation of air conditioning is the cause of sick-building symptoms in communities around the world. In my work I often find A/C coils and drip pans colonized with bac ...