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4 Year Full Warranty

Ultra-Aire MD33

The Ultra-Aire MD33 is the first true in-wall dehumidifier that features a slim profile of only 5 ¾″ deep, allowing it to easily fit inside 2″ x 6″ or through 2″ x 4″ interior stud walls. A mounting kit is available to affix the unit to masonry and CMU block as well.

The Ultra-Aire MD33 is Energy Star® Certified and runs independent of the HVAC system, removing up to 33 pints of water a day. Sized for up to 1,200 square feet, the MD33 is the perfect solution to control moisture in multi-family applications and features a digital RH control behind a tamper-proof cover.

The unit can be hardwired into existing electrical or directly plugged into a 110v outlet with the provided cord. Designed to drain directly into a hub-drain or plumbing line, the MD33 is truly a hands-off dehumidification system.

Part Number: 4035900
Blower: 155 CFM @ 0.0″ WG
Power: 324 Watts @ 80°F and 60% RH
120 Volt, hard-wired — electrical can be routed through bottom or out the back of the cabinet
Cord: Optional 10′ cord with plug end
Automatic Restart: Yes
Current Draw: 2.8 Amps
Operating Range: 49°F – 95°F
Sized For: Up to 1,200 Square Feet
Minimum Performance at 80°F and 60% RH
Water Removal: 33 Pints/Day
Efficiency: 4.25 Pints/kWh
Controls: Digital dehumidistat control internally mounted behind tamper-proof cover
Air Filter: ½″ Washable — mounted behind diffuser
Dehumidistat: Digital, tamper-proof, float switch input
Cabinet: Galvanized Steel
Cover: Tamper-proof, access lock-out
Decibels: 46 dBA
Drain Connection: ¾″ O.D.
Drain Hose: 10′ gravity fed (¾″ I.D.) hose — can be routed through bottom or out the back of the cabinet
Refrigerant Type: R134A
Refrigerant Amount: 10 oz.
Coils: Electrophoretic coated coils — prevents corrosion and extends life of the unit
Utility Connections: Accessible from front for blind installation
Dimensions: Width: 14 316
Height: 30″
Depth: 5 ¾″D
Weight: Unit Weight: 40 lbs.
Shipping Weight: 45 lbs.

2×6 In-Wall
Installation

2×4 Through the Wall
Installation

2×4 In-Wall Bezel Mount Kit
Installation

Surface Mount
Installation

Surface Mount Kit (4037766)
The Ultra-Aire Surface Mount Kit can be used to permanently install the Ultra-Aire MD33 In-Wall Dehumidifier to masonry or CMU block when through-the-wall installation is not available.
Download Instructions
2X4 Wall Mounting Bezel Kit (4037767)
The Ultra-Aire 2X4 Wall Mounting Bezel Kit can be used to permanently install the Ultra-Aire MD33 In-Wall Dehumidifier in a 2X4 cavity without having to cut a hole in both sides of the drywall.  The powder-coated metal bezel wraps around the front face of the dehumidifier giving it a completely polished look to blend into any environment.
Download Instructions
2X4 Rear Panel Kit (4037768)
The Ultra-Aire Rear Panel Kit can be used to cover the back of the Ultra-Aire MD33 In-Wall Dehumidifier when installed in a 2X4 cavity to conceal the unit and any gaps that may exist in the drywall.  The powder-coated metal panel gives the back of the dehumidifier a completely polished look to blend into any environment.
Download Instructions
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The Inside Story On Humidity & Fresh Air

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Did You Know?

Ultra-Aire dehumidifiers provide superior indoor air quality through fresh air ventilation and humidity control

Lowering your AC to dehumidify your home can cause condensation resulting in mold.

Ultra-Aire dehumidifiers help reduce the risk of serious health issues through filtration, ventilation, and moisture control.

Overcooling your home to control humidity will make you feel uncomfortable and raise your utility bill, and what do you do in spring and fall.

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