When the combustion air duct is connected directly to the return plenum for a furnace, the blower fan on the furnace pulls outdoor air in to the return plenum. To supply this air to the furnace room, ...

To fully understand how to install a high-velocity HVAC system, one must know what it is and what it does. Basically, it is a small duct, high-velocity airflow, heating and cooling system designed to ...

ST. AUGUSTINE, Fla., Jan. 28, 2025 /PRNewswire/ -- Q-PAC, a leader in innovative commercial HVAC fans, today announced the launch of the Q-PAC Multimotor Plenum Fan (MPF). Engineered to address the ...

Plenum: designed to fit in a wall of a building and accommodate the plants. Removable plant trays: accommodate growth media, plants, lights, and a watering device. Back duct: combines multiple air ...