Air Duct Cleaners

Why does our central air unit emit a very sour smell for a few days after switching from heat to cooling?

Dennis asked: An air conditioning technician checked the coils and they were clean with no signs of fouling. Adding bleach to pan does not help, Unit and house is 5 years old – all ducts and filters are clean with no sign of mold. Neighbor’s house by same builder has same problem.Duct Cleaning Atlanta

How to improve air quality inside?

dapunkin2001 asked: Our heat pump was installed around 2001 and the duct work was replaced also. I know the duct work needs to be cleaned badly,especially since we have 6 pets and we smoke. I had a specialist come out today and give me an estimate and the total was $5000!! The price included cleaning [...]