https://hvaclaboratory.com/the-effect-of-makeup-air-units-on-hvac-system-longevity/
The Effect of Makeup Air Units on HVAC System Longevity | HVAC Laboratory
Apr 28, 2026 - Makeup Air Units (MAUs) are essential components in modern HVAC systems, especially in commercial and industrial buildings. They help maintain indoor air...
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https://www.hpac.com/directory/ventilation-indoor-air-quality/direct-fired-makeup-air-units
Direct Fired Makeup Air Units | HPAC Engineering
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