Indoor Air Quality

MERV 8 to 11 is the right winter range for most Chicago homes with a one-inch filter slot. Going denser usually costs more in restricted airflow than it buys in filtration — and can shut your furnace down.

When it comes to keeping your indoor air fresh and healthy, duct cleaning plays a crucial role. Over time, dust, allergens, and pollutants build up inside your ducts, dragging down air quality and HVAC efficiency. Here is how professional duct cleaning in Chicago makes a real difference in your home or business.

Indoor humidity in a heated Chicago home routinely drops below 20 percent. That shows up in your sinuses, your trim, your floors and your heating bill. A whole-home humidifier is included free with every new system we install.

Indoor air quality affects your health and comfort every day, at home and at work. Here is why air quality testing in Chicago matters, how it works, what it costs, and how to breathe easier with reliable indoor air quality testing.

Indoor air can be more polluted than the air outside, and it affects your health every day. Here are practical, proven steps to improve your indoor air quality and create a healthier home or workplace.

You can see the haze over the Kennedy Expressway on a bad air day. What you can't see is that the air circulating inside your home may actually be worse. Here's what's lurking in your indoor air and what your HVAC system can do about it.