The Importance of Tempered or Heated Makeup Air Units

If you are in a colder region you may be required by local code to install a Tempered Makeup Air Unit in your restaurant or commercial space. The whole purpose of a makeup air unit is to push the exhaust air out of the restaurant, and replace it with fresh, clean air from the outside. Replacing the inside air with clean air helps with ventilation issues and air quality, as well as removing grease, smoke, and cooking odors from the building. If your exhaust system is only pushing air out, and not replacing the exhausted air with a makeup air unit, you can also run into issues like unbalanced air pressure and issues with control of temperature and humidity.


On top of the air quality benefits of a makeup air unit it also helps regulate air pressure inside of the restaurant. Without a makeup air unit the pressure could make opening and closing doors more difficult due to what is referred to as negative air pressure. The units also help with preventing potentially dangerous back drafts around your kitchen’s cooking appliances. So why would you need a tempered, or heated, makeup air unit? Remember that makeup air units are exhausting out air from within the building, and replacing that air with fresh air from outside. If you are in a particularly colder region you would be replacing the temperature regulated air from in the building with the freezing air from outside. To offset the colder air from outside you would install a tempered makeup air unit thats acts as a heater in between the cold air being pulling from outside of the building and the air being pushed back into the building.


While the main benefit of a tempered makeup air unit would be that it’s not pushing cold air back into the building, there are several other important benefits of these units. To start it helps increase the efficiency of your HVAC system by removing the burden of the HVAC system by pushing warm air into the building, and makes it easier to maintain a comfortable air temperature inside the establishment. This increased energy efficiency can also save you money - the tempered air makeup unit helps reduce heating bills as they are more efficient at heating the are than a typical HVAC system, especially on extremely cold days. The heated makeup air units also have huge benefits with regulating and balancing air pressure within the establishment, as well as avoiding dangerous back drafts.


Tempered makeup air units aren’t limited strictly to restaurants either. Many industries with buildings located in colder temperatures can benefit from a heated makeup air unit, including laboratories, warehouses, underground parking garages, and manufacturing plants. HoodMart provides our customers with a wide range of exhaust hood systems - from Compensating (Short Cycle) to Perforated Supply Plenum PSP - as well as all exhaust hood accessories such as no weld Grease Duct, hood filters, canopy hood lights, and curbs. If you still have questions regarding the purchase of your hood system, please feel free to contact one of our experts today by calling us at 1.800.715.1014 or by contacting us through our live chat system.