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  1. All products
  2. Air Conditioning
  3. Mini Split Indoor Unit
  4. MRCOOL MCAEAWPEF18D21AA Signature Series Stud Mount Air Handler with 18000 BTU Capacity, ECM Motor and Galvanized Steel Cabinet in Gray (Outdoor Unit Required to Operate)
  5. Mini Split Indoor Unit
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MRCOOL MCAEAWPEF18D21AA Signature Series Stud Mount Air Handler with 18000 BTU Capacity, ECM Motor and Galvanized Steel Cabinet in Gray (Outdoor Unit Required to Operate)
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  1. MRCOOL MCAEAWPEF18D21AA Signature Series Stud Mount Air Handler with 18000 BTU Capacity, ECM Motor and Galvanized Steel Cabinet in Gray (Outdoor Unit Required to Operate)
  2. mw5871oh-ved4th-image_4_.webp
  • Specifications
  • Documents
Brochure.pdf
Use and Care Manual.pdf
Warranty.pdf

MRCOOL MCAEAWPEF18D21AA Signature Series Stud Mount Air Handler with 18000 BTU Capacity, ECM Motor and Galvanized Steel Cabinet in Gray (Outdoor Unit Required to Operate)

SKU: MCAEAWPEF18D21AA
0 Units Available Pre-Order (90 – 120 Days)

The MRCOOL® Signature Series 18K Stud Mount Air Handler delivers space-saving, energy-efficient heating and cooling designed specifically to fit between standard wall studs. Ideal for tight spaces and retrofits where traditional units won't fit, this slim system features a high-efficiency ECM motor, insulated galvanized steel cabinet, and quiet operation with both front and bottom return air options. Complete with a built-in air filter rack, optional electric heat kit compatibility, and a 10-year limited parts warranty, it provides a flexible, durable solution for reliable home comfort.

MRCOOL Mini Split Indoor Unit MRCOOL Signature MRCOOL Signature Mini Split Indoor Unit
$ 1,118.00 $ 1,242.23
$ 1,140.97

$ 0.00 / Units
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  • Provides Heating
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  • Amps
  • Heating BTU Capacity
  • Remote Controller
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MRCOOL® Signature Series 18K Stud Mount Air Handler
Enhance your HVAC system with the MRCOOL® Signature Series 18K Stud Mount Air Handler, engineered for versatility, efficiency, and easy installation. Designed to fit between standard wall studs, this compact, space-saving unit is perfect for areas where traditional air handlers won’t fit, providing flexible solutions for a variety of applications.

Robust Heating and Cooling Performance
Despite its slim profile, the air handler delivers robust heating and cooling performance when paired with a compatible heat pump or condenser. It supports both front and bottom return air configurations, allowing you to tailor airflow to your space.

Quiet and Reliable
Constructed with a durable galvanized steel cabinet and advanced blower technology, the 18K Stud Mount Air Handler operates quietly and reliably. Fully insulated cabinets help minimize condensation and energy loss, while the high-efficiency ECM motor ensures consistent airflow and energy savings throughout your home. A built-in filter rack allows for quick, hassle-free filter changes, and optional electric heat kits are available to boost performance during colder months.

Warranty
Backed by a 10-year limited parts warranty, this unit offers peace of mind along with dependable performance. Whether you’re remodeling, upgrading, or building new, the MRCOOL® Signature Series 18K Stud Mount Air Handler is a space-conscious solution built for comfort, convenience, and long-lasting reliability.

  • Capacity: 18,000 BTU (18K) – compatible with matching heat pumps or condensers
  • Installation: Fits between standard wall studs – ideal for tight or space-restricted areas
  • Airflow Configuration: Supports front or bottom return air
  • Cabinet: Durable galvanized steel with full insulation to reduce condensation and energy loss
  • Blower Motor: High-efficiency ECM motor for consistent airflow and energy savings
  • Noise Level: Quiet operation due to advanced blower technology
  • Filter: Built-in filter rack for quick, easy filter changes
  • Optional Upgrades: Electric heat kits available for enhanced heating in colder months
  • Warranty: 10-year limited parts warranty for peace of mind
  • Applications: Suitable for remodeling, new construction, or upgrades where space is limited
  • Design: Compact, space-saving profile without sacrificing performance

Specifications

Appearance
Color Gray
Appliance Category Air Conditioner
Brands
Brand MRCOOL
Series Signature
Dimensions
Height 36"
Width 20 1/2"
Depth 15"
Style
Style Air Handler
Type Mini Split Indoor Unit
Capacity
Nominal BTU Capacity 18000 BTU
Cooling BTU Capacity 18000
Heating BTU Capacity 18000
Warranty
Warranty 10 Year Parts
Technical Details
Voltage 230 Volts
Amps 15
Features
Filter Type Removable
Provides Heating Yes
Heat Heat Pump
Remote Controller No
Others
Color Family Gray