Service Hotline: More on Vent Residue, Ammonia Sensors, Condensation Problems, Training, Residential A/C and Pulling a Vacuum
By Michael Woolsey
KE Fibertec North America
In the April 3 Service Hotline section, a question was asked about vent residue. While keeping filters clean and increasing their efficiency seems like the logical solution, it overlooks a major, if not dominant, cause of smudging: particles in the room air.
Traditional mixing diffusers work by mixing supply air with room air. As supply air is blown out of a diffuser, room air is induced upwards, toward the center of the diffuser. The high-velocity stream of supply air pulls air from the room and mixes it near the diffuser.