Field Controls provides Indoor air quality products, UV air purifiers, media filters, fresh air systems, barometric draft controls, draft inducers, power venters and air boosters, condensate pumps, and whole house fans.

Honeywell is a provider of custom-engineered sensors, switches and controls, and productivity solutions built around its high performance data collection hardware including rugged mobile computers, voice-enabled software, bar code scanners, radio frequency identification (RFID) and workflow printing solutions. They also provide pressure sensors for HVAC and refrigeration equipment.

TRION IAQ provides a complete line of indoor air quality products: filters, air cleaners, cartridge dust collectors and electrostatic precipitators, cleanroom filtration, humidifiers, dehumidifiers.