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1. • • The building’s MUA unit is generally located at the top of the building, either in the mechanical room or on the roof. The function of the MUA unit is in its name: it makes up the air that gets exhausted from kitchen, bathroom, and dryer exhaust systems. By replenishing the removed air, the MUA unit helps maintain balanced airflow in the building.
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     Make Up Air Units Explained - HVAC Know It All

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   What is a Mua unit & how does it work?

   • The function of the MUA unit is in its name: it makes up the air that gets exhausted from kitchen, bathroom, and dryer exhaust systems. By replenishing the removed air, the MUA unit helps maintain balanced airflow in the building. The building ventilation and the MUA system must work together to maintain proper building pressure.

   Make Up Air Units Explained - HVAC Know It All

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   How important is air balancing in a Mua system?

   • One aspect often overlooked with MUA systems is the air balancing process. Over the years, it’s not uncommon for tenants to adjust hallway diffusers, which can negatively impact the overall system.

   Make Up Air Units Explained - HVAC Know It All

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   What is a make-up Air Unit (MAU)?

   • A make-up air unit is a dedicated piece of equipment that brings in outside air in order to “make up” for any loss due to exhausting operations, such as commercial kitchens, industrial processes, and fireplaces.

   Make-up Air Units and Their Role in Building Ventilation

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   Does a Mua system cool in the winter?

   • Most MUA systems temper the air in the winter to prevent icy cold air from being delivered to the hallways. Some MUA systems are also designed to provide cooling in the summer. A common complaint I often hear is, “ The hallway temperatures don’t feel the same as my unit.” However, hallways don’t need to be kept at 23°C (74°F) in the winter.

   Make Up Air Units Explained - HVAC Know It All

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   How does a make-up air unit work?

   • Maintenance is relatively simple as well, because most make-up air units are constructed with long-life stainless steel heat exchangers and are equipped with standard HVAC filters to remove particles quickly and cleanly, preventing the accumulation of dirt, while simultaneously maintaining indoor air quality standards.

   Make-up Air Units and Their Role in Building Ventilation

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   How does a gas fire MUA work?

   • The gas flame is contained in metal pipes known as a heat exchanger. The air is then heated by passing it through the exchanger before circulating it into the building. While the design is less efficient compared to direct fire MUAs, it prevents any gas byproducts from being mixed with the air.

   Make Up Air Units: A Guide to Different Models for Different Needs

   blog.totalhomesupply.com/make-up-air-units-ultimate-guide/

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3. hvacknowitall.com › blog › make-up-air-units-explainedMake Up Air Units Explained - HVAC Know It All

   hvacknowitall.com › blog › make-up-air-units-explained

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   Feb 17, 2019 · The function of the MUA unit is in its name: it makes up the air that gets exhausted from kitchen, bathroom, and dryer exhaust systems. By replenishing the removed air, the MUA unit helps maintain balanced airflow in the building.

4. blog.totalhomesupply.com › make-up-air-unitsMake Up Air Units: A Guide to Different Models for Different ...

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   Aug 24, 2022 · Learn what a makeup air unit is, and explore the different types of makeup air systems for different applications.

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6. allthingshvac.com › all-you-need-to-know-and-moreMake up Air Units: All You Need to Know and More

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   Mar 20, 2024 · Make up air units are designed to supply conditioned air, with controlled temperature and humidity, into a building to replace air that has been removed by exhaust systems or combustion.

7. www.greenbuildingadvisor.com › article › all-aboutAll About Makeup Air - GreenBuildingAdvisor

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   Feb 22, 2019 · If your house is very tight, you may need to provide a source of makeup air for your exhaust appliances. This house has a duct to convey outdoor air to the return plenum of the forced-air heating system. The outdoor air duct is equipped with a motorized damper that opens whenever the range hood exhaust fan is turned on.

8. www.greenbuildingadvisor.com › article › choosingChoosing the Right Range Hood Makeup Air System

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   Apr 11, 2024 · Choosing the Right Range Hood Makeup Air System. First know the basics, then consider all the factors that go into a good makeup air system. Then install a modest-size range hood with the right capacity. By Allison A. Bailes III, PhD | April 11, 2024. A kitchen range hood sucks air out of a house.

9. schnackel.com › blogs › make-up-air-units-and-theirMake-up Air Units and Their Role in Building Ventilation

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   Feb 21, 2023 · In this post, we’ll explore how make-up air units work, their role in ventilation, and why they are important. What is Make-up Air? Make-up air is a crucial component in any ventilation system, as it prevents the build-up of indoor air contaminates and helps prevent negative pressure in buildings.

10. www.cambridgeair.com › make-up-airMake-Up Air | What is it & How Does it Work? | Cambridge Air ...

    www.cambridgeair.com › make-up-air

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    Make-up air is designed to “make up” the air in your interior space that has been removed due to process exhaust fans. This type of HVAC solution pulls in fresh, tempered air from outside your building to replace existing air that cannot be recirculated.