When wildfires threaten people's communities, human health is impacted far beyond the inferno. Residual smoke distributes in ...

Check your current filter. The easiest way to find the size you need is to look at the filter that's already inside of your ...

Low-cost, DIY air purifiers are proving to be just as effective as expensive commercial units at protecting indoor spaces ...

The CR Box is made up of four air filters commonly used in heating, ventilation, and air conditioning (HVAC); a cardboard ...

But not every HVAC system can accommodate a thicker filter—the most common size is 1 inch thick—though you can retrofit the ductwork of some systems to accept one. Something else to keep in ...

The CR Box comprises four air filters commonly used in heating, ventilation, and air conditioning (HVAC); a cardboard base; and a box fan to draw air through the filters and toward the ceiling.