Your return air vent plays a vital role in your HVAC system, but it’s often overlooked. Discover how dust and pet hair accumulate, the warning signs to watch for, and why keeping return vents clean matters.
What’s That Black Stuff Around My Vents?
Noticed black or dark staining around your air vents? It doesn’t automatically mean mold. Learn what can cause discoloration around HVAC registers, from ordinary dust and air leaks to soot and moisture.
Out of Sight Doesn’t Mean Clean: What Could Be Hiding in Your HVAC System?
You wash your car because you can see the dirt. But much of your HVAC system is hidden from view. Learn what can accumulate inside and why out of sight doesn’t necessarily mean clean.
Can Dirty Air Ducts Trigger a Commercial Fire Alarm?
Dust, lint, debris and other contaminants can accumulate inside commercial HVAC systems without anyone realizing it. A recent sales conversation shows why air duct cleaning may be an overlooked opportunity for retailers and other commercial facilities.
Your Pet’s Hair May Be Getting Past Your HVAC Filter
Pet hair doesn’t just collect on floors and furniture. It can make its way into your HVAC system and even become matted around coils. Here’s what pet owners should know about pet hair, filters and keeping their HVAC system cleaner.
Mold Remediation Is Complete. But What About Your HVAC System?
Mold remediation may address the visible problem, but what about your HVAC system? Learn how the S590 industry standard applies to homes and why an HVAC assessment may be appropriate after mold or water damage.







