I have used IAQ for over 5 years for 3 different houses. The work has involved everything from regular maintenance of our HVAC systems - one of them being a Geothermal unit, to full on installation of in wall, room by room cooling heating units for a whole house. Every interaction with them has been positive, from the dispatchers to the technicians. Courteous, efficient, competent, straightforward, responsive, with shared priorities - like, not only a well functioning HVAC unit, but like their name says, they care about your family's Indoor Air Quality. I recommend them highly.