Skip to content
Discount Kings — We Sell Everything for Less!!

MRCOOL

MRCOOL Signature 18,000 BTU Split System Air Handler Stud Mount

MCAEAWPEF18D21AA

18,000 BTU · 208/230V · R-454B

Part of Signature Series – Air Handlers

Cooling capacity
18,000 BTU1.5 tons
Power
208/230V3A breaker
Refrigerant
R-454B

Call for pricing Add it to your cart and send us a quote request — or call 678-467-5515.

Not sure about the size? Use the BTU sizing calculator, or call us and we'll size it with you. Professional installation by a licensed HVAC contractor is required for the manufacturer warranty.

Distributor pricing and stock: call 678-467-5515 or email sales@discountkings.net.

About this product

Enhance your HVAC setup with the MRCOOL® Signature Series 18K Stud Mount Air Handler—designed for exceptional versatility, efficiency, and simplified installation. Built to fit between standard wall studs, this compact and space-saving unit is ideal for areas where traditional air handlers can't be installed, offering flexible solutions for a variety of applications. Though slim in design, this air handler delivers robust heating and cooling performance when matched with a compatible heat pump or condenser. It offers both front and bottom return air configurations, allowing you to tailor the setup to your specific space and airflow needs. Constructed with a durable galvanized steel cabinet and featuring advanced blower technology, the MRCOOL® Signature Series 18k Stud Mount Air Handler ensures quiet operation and long-lasting reliability. Full cabinet insulation helps reduce condensation and energy loss, while the high-efficiency ECM motor provides consistent airflow and improved energy savings throughout your home. A built-in filter rack allows for quick and easy filter changes, and optional electric heat kits are available to boost performance during colder months. Backed by a 10-year limited parts warranty, this unit delivers peace of mind along with performance. Whether you're remodeling, upgrading, or building new, the MRCOOL® Signature Series 18k Stud Mount Air Handler is a dependable, space-conscious solution built for comfort and convenience.

Documents & manuals

Specifications

Capacity & efficiency
TypeAir handler (indoor unit)
SeriesSignature Series
Cooling capacity18,000 BTU
Nominal size1.5 tons
Airflow685 CFM
Sound level53 dBA
Electrical
Voltage208/230V
Phase1-phase
Min. circuit ampacity (MCA)2.5 A
Max. breaker (MOP)3 A
Refrigerant & line set
RefrigerantR-454B
Liquid line3/8"
Suction line3/4"
Physical
Indoor unit / mountingStud Mount
Dimensions (in)20.5 W × 15 D × 36 H
Weight88 lb
Shipping weight97 lb
ColorGrey
Certifications, warranty & ordering
AHRI certifiedYes
Safety listingUL, ETL
Parts warranty10 years
UPC840255595919