Make-Up Air Units

Keep Indoor Work Spaces Safe and Clean

Many facilities utilize make-up air (MUA) units as ventilation and exhaust systems work to remove warm air and contaminants from buildings, a controlled source of replacement ambient air is needed to keep indoor spaces clean and comfortable 

What is a Make Up Air Unit? 

Make-up air units are a type of mechanical equipment designed to consistently push fresh outdoor air into an indoor space. MUA systems play a crucial role in air rate exchange, delivering high volumes of air to be recirculated back into the building space.   

As ventilation and exhaust systems work to remove warm air and contaminants from buildings, a controlled source of replacement ambient air is needed to keep indoor spaces at neutral air pressure. Otherwise, unintended methods of replacing air result in adverse outcomes such as poor IAQ, process downtime and HVAC equipment working harder for lesser results. 

PreVent air intake screens easily mount on the outside of a MUA unit, stopping airborne contaminants before they reach the inside of the equipment, to deliver reliable high performance and low operating costs.  

Prevent Equipment Breakdowns with Prevent!

PreVent Model PF Prefilter

PreVent air intake screens stop airborne contaminants before they ever get inside your cooling tower. UV protected and custom sized, PreVent fits to the intake enclosure with a variety of mount options. Cleans in minutes with a broom or shop vac.

What are the benefits of our PreVent Make-Up Air Unit protection screens? 

Easy Installation and Cleaning

Increased Energy Efficiency

See ROI in 1-2 Years

Extend the Lifespan of Your HVAC Equipment  

Extend the Lifespan of Interior High-Efficiency Filters

Reduce Maintenance Cost and System Downtime  

What Industries Use Make-Up Air Units

Data Centers

Medical Facilities


Processing Plants

PreVent is a cost effective way to keep make-up air unit equipment running smoothly.

Make-Up Air Unit Intake Filter Solutions

Permatron has an innovative prefilter solution that keeps high-efficiency air filters lasting longer and MUA units functioning properly with the PreVent system. 

  • Several of our large commercial buildings in Atlanta have purchased the PreVent filtering product for their cooling towers. The benefits of being able to get through our spring season without much intrusion into the building owners equipment has been successful. The product was easy to install and has been simple for the customers to maintain. We are excited to have this product in our line of filtration options.

    Joey ChapmanAir Filter Sales and Service, Inc.
  • The R2 filters I have sold have worked very well. They do as advertised, by keeping the inside of our air compressors clean. No customer complaints after the sale and no problems with the construction of the washable filters. Your delivery times are fast and your customer service agents are a pleasure to work with. I look forward in continuing our business relationship with Permatron in 2013 and thank you for all of the continued support that we receive in making our compressors work better.

    John JarrattAir Compressor Energy Systems, Louisiana
  • I attached a couple of photos of the completed PreVent Screens installed on Trane rooftop units. They fit very well to our dimensions and look good also. Your folks did a good job on matching all of our requested dimensions. I will keep you guys in our contact list as I can see several applications for your product that would be beneficial & it is another product we can offer to our customers.

    Harold ImmekusAllied Mechanical Services, Kalamazoo, MI


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