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MAUs are units meant to supply conditioned air, whose temperature and humidity is completely controlled, into a building, in order to replace the air that has been removed by the exhaust systems or by combustion. Their main function is that they bring fresh outside air through their ventilation heating or cooling equipment, rather than recycling or recirculating the already existent one.
Check out our latest blog post to learn more.

https://www.therma.com/what-is-exhaust-air-and-how-maus-makeup-air-unit-help-replenish-it/