The MRCOOL Signature Series stud-mount air handler is the compact indoor half of a Signature central split system, in four sizes from 1.5 to 3 tons (18,000 to 36,000 BTU). Its ECM blower moves 685 to 1,095 CFM at rated sound levels of 53 to 57 dBA, and the 1.5 and 2-ton cabinet measures 20.5" W x 36" H x 15" D.
It hangs from a wall bracket or mounts in a frame and takes a front or bottom return, so it suits closets, alcoves and utility rooms too tight for a floor-standing air handler. Pair it with a Signature heat pump or cooling-only condenser of the same capacity. Installation is by a licensed HVAC contractor.
Features
Wall Bracket or Frame Mount
Ships with a wall mounting bracket and a bottom support plate, or mounts inside a frame through eight side holes.
Front or Bottom Return
Return air can enter through the front or the bottom of the cabinet to suit the closet layout.
ECM Blower Motor
A 1/3 HP ECM motor on the 1.5 and 2-ton models and 1/2 HP on the 2.5 and 3-ton models, moving 685 to 1,095 CFM.
Built-In Filter Rack
Takes a 15" x 19" x 1" or 20" x 20" x 1" filter, depending on size, without a separate filter grille.
R-454B Leak Sensor
A factory-configured refrigerant sensor stops the compressor and electric heat and keeps the blower running if a leak is detected.
Electric Heat Ready
Optional 5, 7.5 and 10 kW electric heat kits fit inside the cabinet.
Insulated Galvanized Cabinet
A fully insulated galvanized steel cabinet helps limit condensation on the outside of the unit.
Specifications
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Voltage: 208/230V
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Phase: 1
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Frequency: 60 Hz
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Refrigerant: R-454B
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Liquid Line: 3/8"
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Suction Line: 3/4"
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Mount: Stud Mount
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Airflow Direction: Upflow
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Blower Motor: ECM
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Metering Device: Orifice
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Filter: Replaceable, in the built-in filter rack
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Works With: Signature Series Top Discharge Condensers
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ENERGY STAR: No
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AHRI Certified: Yes
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UL Listed: Yes
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ETL Listed: Yes
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CSA Listed: Yes
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Color: Grey
18,000 BTU
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Model: MCAEAWPEF18D21AA
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Nominal Tonnage: 1.5 ton
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Minimum Circuit Ampacity: 2.5 A
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Max Fuse / Breaker: 3 A
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Sound Level: 53 dBA
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Airflow: 685 CFM
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Filter Size: 15" x 19" x 1"
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Dimensions: 20.5"W x 15"D x 36"H
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Weight: 88 lbs
24,000 BTU
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Model: MCAEAWPEF24D21AA
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Nominal Tonnage: 2 ton
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Minimum Circuit Ampacity: 2.5 A
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Max Fuse / Breaker: 3 A
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Sound Level: 54 dBA
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Airflow: 797 CFM
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Filter Size: 15" x 19" x 1"
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Dimensions: 20.5"W x 15"D x 36"H
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Weight: 88 lbs
30,000 BTU
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Model: MCAEAWPEF30E21AA
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Nominal Tonnage: 2.5 ton
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Minimum Circuit Ampacity: 4.5 A
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Max Fuse / Breaker: 6 A
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Sound Level: 55 dBA
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Airflow: 965 CFM
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Filter Size: 20" x 20" x 1"
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Dimensions: 22.12"W x 19"D x 39.5"H
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Weight: 110 lbs
36,000 BTU
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Model: MCAEAWPEF36E21AA
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Nominal Tonnage: 3 ton
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Minimum Circuit Ampacity: 4.5 A
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Max Fuse / Breaker: 6 A
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Sound Level: 57 dBA
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Airflow: 1,095 CFM
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Filter Size: 20" x 20" x 1"
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Dimensions: 22.12"W x 19"D x 39.5"H
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Weight: 110 lbs
What's Included
- MRCOOL Signature Series stud-mount air handler with R-454B refrigerant leak sensor
- Wall mounting bracket and bottom support plate
- Installation and user manual
Installation
Professional installation required. This equipment must be installed by a licensed HVAC contractor (EPA Section 608-certified for any refrigerant work), following MRCOOL's installation manual and all local codes, permits and licensing rules. MRCOOL's limited warranty applies only to units installed that way, and it does not cover installation labor.
Pairs with the Signature Series heat pump or cooling-only condenser of the same capacity; the air handler ships with its metering orifice installed. Hang it on the wall bracket fixed into studs, or mount it in a frame; either structure must carry at least 150 lbs (#12 x 1.5" wood screws recommended, not supplied). It must sit level in both directions. Primary and auxiliary condensate drains are 3/4" NPT, each trapped and pitched 1/4" per foot. Refrigerant connections are 3/8" liquid and 3/4" suction; pressure test brazed joints before any wall is closed. Power is 208/230V single phase; circuit sizes, including with a heat kit, are in the installation manual.
Resources
Shipping, Returns & Warranty
Ships to addresses in the United States only. Shipping cost is calculated at checkout.
Inspect the packaging and the product before you sign. Note any damage or shortage on the delivery receipt, then email photos to support@mycleansupplies.com within 48 hours of delivery so the freight claim can be filed. Damage reported after 48 hours can't be claimed.
MRCOOL handles returns through the store you bought from, so your return comes to us. Unopened, unused MRCOOL equipment can be returned within 21 days of delivery with a return authorization from us. You pay the return shipping, and a restocking fee of up to 20% may be deducted along with payment processing fees. Opened, installed or used equipment and special-order items can't be returned.
MRCOOL's limited warranty gives the original owner 10 years on parts, counted from the proof of purchase date. It covers replacement parts only, not labor, and it requires purchase from an authorized dealer, installation that follows all applicable codes, permits and licensing, and a matched, approved Signature condenser. Full terms, registration steps and exclusions are in the MRCOOL warranty document under Resources.
Warranty claims. MRCOOL handles warranty claims directly through support.mrcool.com or (270) 366-0457. Some MRCOOL warranties cover the original purchaser only. Systems that aren't DIY need a valid installation invoice to open a claim.
About MRCOOL
MRCOOL designs heating, cooling and water-heating equipment from its home base in Hickory, Kentucky. The range runs from DIY ductless mini-splits, built around MRCOOL's patented pre-charged Quick Connect line sets, through contractor-installed mini-splits, central split systems, packaged units and gas furnaces, to HeatWise water heaters and CoolBlade HVLS fans for warehouses and shops.
The Signature Series is MRCOOL's single-stage central split line on R-454B: cooling-only and heat pump condensers from 1.5 to 5 tons, matched indoors by a multi-position air handler at every size and by this wall-hung stud-mount air handler from 1.5 to 3 tons. Condensers and air handlers are sold separately, and the variable-speed TruInverter models sit above them in the Signature range.
