Fan filter diffusers have been added to Greenheck’s growing line of health care, laboratory, and cleanroom (HLC) air distribution products. These unidirectional diffusers with integrated ...

The Criti-Clean fan filter unit (FFU), a fan-powered laminar flow HEPA filter diffuser, is a computer-controlled FFU. It features a variable-speed electronically commutated motor, stainless steel ...

We independently review everything we recommend. We may make money from the links on our site. Learn more› By Thom Dunn Thom Dunn is a writer focusing on home heating and cooling. He once blew up a ...

Every year when I pull my air conditioner out of storage and reinstall it, I'm worried about whether my window unit managed to survive the colder months. This year when I turned it on, I was worried ...