MUA Interlock
How does the hood communicate with the furnace?
MUA Pressure Balancing
For systems over 400 CFM, we install a current-sensing relay on the hood's power line. When the fan starts, it sends a low-voltage signal to the furnace or dedicated MUA damper to open, equalizing house pressure.
A safety system that automatically opens a fresh air damper when the range hood exceeds 400 CFM to prevent backdrafting.