Today I ran a super tune up on both home systems. During tune up I noted that there was a IAq300 installed in only one of two systems. When finished with both tune up I made the home owner aware of the fact they only had one UV system installed. The owner stated they would like to have a iaq300 installed in the system that does not have one but they also expressed concerns about smelling dust and having issues with regulating temperatures. Recommended appointment with IAQ specialist Zak to install iaq300 and address concerns with air quality/air flow. Owner requested to schedule for 5/16/25 or 5/20/25 in the morning around 10:00am.