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MUAS Makeup air system
Makeup air systems for balancing residential kitchen exhaust
Variable supply airflow automatically in proportion to the exhaust
Provides the exact amount of air needed
Filters outdoor particles before fresh air is delivered to the home
Optional inline duct heater to temper cold incoming outdoor air
Flexible installation options within ductwork (MUAS 750 and MUAS 1200)
Unitary system with external shut-off damper (MUAS 8 and MUAS 10)
Automatic Airflow Adjustment
The makeup air system and controller automatically adjust the supply airflow proportionately to the kitchen exhaust.
Enhanced Indoor Air Quality
The system filters outdoor particles effectively removing contaminants and pollutants before delivering fresh air into the home.
Versatile Installation
The MUAS is designed to be installed however it fits best within the application. The system can be designed in a linear path, or, with enough ductwork, can be installed in a snake-like formation.
Complies with Code Requirements
The system meets requirements for makeup air, ensuring that exhaust systems are mechanically provided with an appropriate amount of makeup air to balance the air pressure and maintain indoor air quality in the home.
Powerful, vented range hoods exhaust smoke and grease from the kitchen to the outdoors, but an equal amount of supply air needs to enter the home to keep pressure levels balanced and avoid drawing air in from poorly suited places, such as chimneys, plumbing vent pipes, or even your garage.
Supplying air back into the building can be done a few different ways and can be as simple as opening a window or door. However, these methods introduce potentially freezing cold air or unfiltered air into the building. The best solution is to install a MUAS that can also reduce a home’s energy bill by providing a balanced pressure scheme.
The MUAS includes an EC-motor inline duct fan, a metal intake wall hood, a motorized shut-off damper, a filter cabinet with a pleated MERV 11 filter, a duct silencer, and 3 pairs of mounting clamps.
Each MUAS comes equipped with a Fantech Makeup Air Controller (FMAC). The FMAC provides automatic operation of the Makeup Air System. The makeup air flow rate automatically and infinitely varies proportionally with the speed at which the exhaust is operated by the homeowner. A neutral (balanced) pressure scheme is common, but the installer can also employ a slightly positive or negative pressure scheme should it be desired.
Unitary System vs. Modular System
A side-by-side comparison
| MUAS 8 / MUAS 10 | MUAS 750 / MUAS 1200 |
|---|---|
| Unitary design | Modular design |
| Fewer parts and faster setup | Versatile and flexible installation |
| Optional inline duct silencer | Inline duct silencer is recommended |
| For 8" & 10" ductwork | For 8" & 10" ductwork |
| Available now | Available to ship until Fall 2025 |
Every time you cook, you need to exhaust air and smoke to the outside. The amount of exhaust air required depends on the type and size of the range. But where does this air come from? In a tightly sealed home, the air will try to fight its way in through cracks, gaps, and leaky vents.
The only real solution is to install an active Makeup Air System that compensates for the equivalent amount of exhaust air.
Product Manager - Fans
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Richard Trethewey from This Old House gives a demonstration on the importance of makeup air in the kitchen of a newly custom-built home.
Matt Risenger from The Build Show discusses the makeup air system he installed in his family home, explaining why an active solution was necessary rather than a passive one.
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Balanced Airflow Mastery for a Kitchen Ventilation Solution
Culinary Comfort meets Precise Air Solutions | Mercer Island, WA, USA