My air quality issue

I would really like to improve the air quality inside my house, but I’m not sure the way to go about it. I’ve read articles that recommend thoroughly weatherproofing your home to prevent outdoor contaminants, such as pollen and exhaust fumes, coming from from entering your home. I’ve also studied articles that warn against an overly tightened house, because there is a need for adequate ventilation. I’ve looked into air cleaners, air purifiers, along with air filtration systems. I’ve considered dehumidifiers and humidifiers, and gave some consideration to a germicidal UV light. I’m not sure if all of these units will make a factor in my air quality, and I don’t understand how to pick the right one. I figured the best way to start was to schedule an appointment with my HVAC technician. My technician serviced my HVAC system and analyzed my indoor quality of air. He asked me a variety of questions about hot and cold spots in my home, moisture issues, and if we had any problems with static shock. He wanted to know how many people reside in the house, if we have pets, and how often I have to dust. When he inspected and cleansed the HVAC system, he noticed a large buildup of dust within it’s inner workings. He asked if we’d recently had renovations done in the house. Apparently, the construction debris got inside the heating and cooling unit, as well as the new ductwork. Every time the air conditioner or furnace started up, dust was getting circulated throughout my home. My HVAC technician suggested having the duct system cleaned immediately.

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