Fire dampers (or fire shutters) are passive fire protection products used in heating, ventilation, and air conditioning (HVAC) ducts to prevent and isolate the spread of fire inside the ductwork through fire-resistance rated walls and floors.[1] Fire/smoke dampers are similar to fire dampers in fire resistance rating, and also prevent the spread of smoke inside…
An air handler, or air handling unit (often abbreviated to AHU), is a device used to regulate and circulate air as part of a heating, ventilating, and air-conditioning (HVAC) system.[1] An air handler is usually a large metal box containing a blower, furnace or A/C elements, filter racks or chambers, sound attenuators, and dampers.[2] Air…
Diffusers are very common in heating, ventilating, and air-conditioning systems. Diffusers are used in both all-air and air-water HVAC systems, as part of room air distribution subsystems, and serve several purposes: *To deliver both conditioning and ventilating air. *Evenly distribute the flow of air, in the desired directions. *To enhance mixing of room air into…
An air washer is an air purifier that cleans the air using water to trap pollutants and impurities. Air washers typically consist of a fan that draws air through a series of damp pads or plates, where the water in the pads or plates absorbs dust, dirt, and other particles from the air.
