A Make Up Air Unit (MUA) replaces the air that is exhausted from a building with fresh, conditioned air. This helps maintain proper air balance, improve indoor air quality, and prevent issues such as negative pressure, drafts, or backdrafting in kitchens, warehouses, and other commercial spaces.
60,000-69,999 - Commercial Make-Up Air Systems
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SAVE $12,389.73King Electric 15kW Make-Up Air Unit Heater, 51,182 BTU 208V/1PhModel: MAU2015-1-ECM-SSRWas $19,404.98 Your Low Price Special Price $7,015.25 -
SAVE $12,389.73King Electric 18kW Make-Up Air Unit Heater, 61,419 BTU 240V/1PhModel: MAU2418-1-ECM-SSRWas $19,404.98 Your Low Price Special Price $7,015.25 -
SAVE $14,264.50King Electric 20kW Make-Up Air Unit Heate, 68,243 BTU 240V/1PhModel: MAU2420-1-ECM-SSRWas $22,341.26 Your Low Price Special Price $8,076.76 -
SAVE $17,714.74King Electric 20kW Make-Up Air Unit Heater, 68,243 BTU 240V/3PhModel: MAU2420-3-ECM-SSRWas $27,745.06 Your Low Price Special Price $10,030.32 -
SAVE $15,032.26King Electric 20kW Make-Up Air Unit Heater, 68,243 BTU 480V/3PhModel: MAU4820-3-ECM-SSRWas $25,197.94 Your Low Price Special Price $10,165.68
Frequently Asked Questions
Gas Fired MUA Units use natural gas or propane burners to heat incoming air, making them a cost-effective choice in regions where gas is available and energy costs are lower. Electric MUA Units use electric heating elements and are preferred where gas isn’t available, or when precise temperature control and reduced emissions are priorities.
A Fresh Air Supply Fan is typically used when you only need untempered outside air for ventilation purposes, without heating or conditioning. This is ideal for warehouses, mechanical rooms, or large open spaces where temperature control isn’t as critical.
Wall Supply Fans are mounted directly to the side of a building and push fresh air indoors. They are cost-effective, easy to maintain, and commonly used for smaller facilities or as a supplemental air supply. Roof-Mounted Fans (or roof supply units) are larger and used in more demanding applications where high volumes of tempered air are required.
Make Up Air Units require regular preventive maintenance to operate efficiently and reliably. This includes inspecting and replacing filters when they become dirty, cleaning burners in gas-fired models or heating elements in electric units, and checking the belts, bearings, and fan operation for wear. It’s also important to verify that controls and temperature sensors are functioning correctly and to ensure that dampers and louvers are free from obstructions. Performing these routine tasks not only improves energy efficiency but also reduces downtime and extends the overall lifespan of the equipment.
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