Why Make-Up Air Might be Your Ventilation Solution
“Why make-up air?” is a question that we get all the time. Fortunately, the answer is simple. A Make-Up Air Unit (MAU) can help improve the air quality inside of the building. All facilities need a method of expelling the heat that builds up inside. In a commercial kitchen it would be a centrifugal fan above the stove. In a steel mill it would be a large natural ventilator. These units get that warm air, along with humidity and smoke, out of the building. As a result, the conditions are automatically cooler and more comfortable.
However, the exhaust can result in depressurization, uneven temperatures, and stagnation. This then needs to be replaced or “made-up” to maintain consistent, comfortable temperatures. That is why the introduction of fresh, new air from an MAU is so helpful.
How Does Make-Up Air Work?
Most Moffitt MAU mix fresh outside air with recirculated inside air. It then uses fans to distribute this treated breeze throughout the building. By combining the fresh outside with the “room temperature” inside, a more comfortable, middle temperature is achieved. For example, it is often hotter inside than it is outside. Combining the relatively cool outside temperatures with the interior conditions, helps cool the entire building. Recirculating throughout the building can create more uniform temperatures.
Additionally, the MAU can utilize heating and/or cooling units to get even greater control over the building temperatures. This can also provide winter-time fresh air changes and even supply to the process. In the simplest terms, a MAU “makes-up” for the air that has been lost through exhaust.
Why Moffitt is the Solution
Moffitt provides high-quality MAUs for industrial applications. We provide direct-fired and indirect-fired models. We also design each unit for maximum effectiveness and long service-life.
The target pressure drop for a standard, single speed unit is 0.6” W.C. Adjustable plates, modulating profile dampers, and other accessories can adjust the burner opening to fine tune the airflow and pressure. This allows the user to adjust the temperature as needed. The wall opening is set when the model is built. Moffitt MAUs are highly customizable with a variety of features and options. See our catalog to learn more. Contact Moffitt today to learn why Make-Up Air might be right for your building.