Description
The Field Controls Make-Up Air System (MAS) is a smart, low-cost ventilation solution that ensures your home maintains balanced air pressure and healthy air quality, especially in tightly sealed modern buildings. Designed to mitigate negative pressure caused by exhaust fans, range hoods, dryers, or fireplaces, the MAS delivers tempered fresh air directly into the HVAC return duct—improving appliance efficiency and reducing energy waste. It requires no electricity and meets or exceeds ASHRAE Standard 62.2 for ventilation.
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