Make-up air units commonly known as Mau’s are the units whose sole purpose is to replace the stale, unhealthy air with a fresh one. Makeup air units are commonly required in every commercial and industrial building because of the traffic inside the building. The makeup air units can be small as the ones for indoors hanging through the ceiling or as big as the same larger outdoor ones which provide fresh air to the entire hospital. Makeup air units could be direct-fired or indirect fired. The direct fire heats from the burner and then supplies warm air to the building in winter. The indirect fire does not fire directly. It uses a series of tubes to send warm air to the building when required. In other applications, we also have a different type in which we use water to cool the air entering inside the building with the help of a honeycomb evaporator. Water falls directly on top of the coil like a swamp cooler and then a fan takes air from the evaporator and feeds it to the building. Every building in Ontario needs to have a makeup air unit for the sake of the building breathing properly. Makeup air units can be installed indoors and outdoors depending. Supplying high Indoor Air Quality (IAQ) is the driver behind the requirement for make-up units. Whether it is the expulsion of contaminants or giving a comfortable temperature, there are many ways to progress IAQ. In most mechanical and commercial applications, a make-up unit could be a much more compelling strategy compared to common ventilation fans coming to an IAQ We carry an wide variety of make-up air units for commercial, mechanical, and kitchen applications. Some types we carry are direct gas-fired, indirect gas-fired, steam, hot water, and electrical. Additional cooling choices are evaporative cooling, direct expansion coils, and chilled water coils. We at DHVAC HEATING, REFRIGERATION, APPLIANCES, AND AIRCONDITIONING SYSTEMS do all sorts of makeup air project installations and have years and years of experience to deal with any kind of makeup air unit system. Our expert licensed industrial gas technicians are fully trained and capable to work on any kind of commercial and industrial system. If you own a business where you needed to get the installation done for a commercial makeup air unit professionally.  Please do check us out by either our nearest branches or even you can fill out the online service request form on our website or you can call us direct.