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MRCOOL® Signature Series MCAEAMPEF42C21AA 3.5 Ton Split System Air Handler Multi-Position - R-454B

SKU: MCAEAMPEF42C21AA
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$1,321.69 $1,784.28
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MRCOOL® Signature Series MCAEAMPEF42C21AA 3.5 Ton Split System Air Handler Multi-Position - R-454B

The MRCOOL® Signature Series 42k Multi-Position Air Handler is built to provide consistent, energy-efficient comfort in any climate. Designed for flexibility and performance, this unit works with R-454B refrigerant, a low-GWP alternative that helps reduce environmental impact without sacrificing power or reliability. Its multi-position design allows for installation in upflow, downflow, or horizontal configurations, making it ideal for a variety of home layouts, from new construction to tight retrofits. With its slim, space-saving profile, it fits easily into closets, attics, or crawl spaces while still delivering full-capacity heating and cooling when paired with a compatible condenser or heat pump. Engineered for durability, the air handler includes a galvanized steel cabinet, a high-efficiency ECM blower motor, and copper “A” coils with enhanced aluminum fins for superior heat transfer and humidity control. Thermal insulation inside the cabinet reduces energy loss and prevents condensation, contributing to quiet operation and lower energy bills. Installation is fast and simple, helping to minimize labor time and disruption. An air filter rack allows for easy maintenance, while an optional electric heat kit is available for added heating performance in colder regions. Smart home compatibility comes standard, with support for most third-party thermostats so you can manage comfort on your terms; no proprietary systems required. Protected by a 10-year limited parts warranty, the MRCOOL® Signature Series 42k Multi-Position Air Handler offers long-lasting performance, space-saving design, and year-round efficiency for today’s comfort-conscious homeowner.

MRCOOL® Signature Series MCAEAMPEF42C21AA 3.5 Ton Split System Air Handler Multi-Position - R-454B Specifications:

BRAND NAME

MRCOOL®

SERIES

Signature Series Multi-Position Air Handler

MODEL

MCAEAMPEF42C21AA

GTIN

00840255595889

UPC

840255595889

UNIT TYPE

Air Handler

CONFIGURATION

Multi-Position

SHORT DESCRIPTION

Signature 42,000 BTU Split System Air Handler Multi-Position

LONG DESCRIPTION

The MRCOOL® Signature Series 42k Multi-Position Air Handler is built to provide consistent, energy-efficient comfort in any climate. Designed for flexibility and performance, this unit works with R-454B refrigerant, a low-GWP alternative that helps reduce environmental impact without sacrificing power or reliability. Its multi-position design allows for installation in upflow, downflow, or horizontal configurations, making it ideal for a variety of home layouts, from new construction to tight retrofits. With its slim, space-saving profile, it fits easily into closets, attics, or crawl spaces while still delivering full-capacity heating and cooling when paired with a compatible condenser or heat pump. Engineered for durability, the air handler includes a galvanized steel cabinet, a high-efficiency ECM blower motor, and copper “A” coils with enhanced aluminum fins for superior heat transfer and humidity control. Thermal insulation inside the cabinet reduces energy loss and prevents condensation, contributing to quiet operation and lower energy bills. Installation is fast and simple, helping to minimize labor time and disruption. An air filter rack allows for easy maintenance, while an optional electric heat kit is available for added heating performance in colder regions. Smart home compatibility comes standard, with support for most third-party thermostats so you can manage comfort on your terms; no proprietary systems required. Protected by a 10-year limited parts warranty, the MRCOOL® Signature Series 42k Multi-Position Air Handler offers long-lasting performance, space-saving design, and year-round efficiency for today’s comfort-conscious homeowner.

WORKS WITH

Signature Series Top Discharge Condensers

CFM

1254

TONNAGE

3.5

VOLTAGE (V)

208/230

PHASE

1

CYCLE

60

MAX FUSE BREAKER (A)

10

MIN CIRCUIT AMPACITY (A)

7.2

MOUNT TYPE

Multi-Position

COLOR

Grey

REFRIGERANT TYPE

R-454B

DECIBEL RATING (DBA)

54

AIR FLOW DIRECTION

Multi-Position

DRAIN CONNECTION SIZE

3/4

LIQUID LINE SIZE

3/8

SUCTION LINE SIZE

3/4

BLOWER MOTOR TYPE

ECM

BLOWER MOTOR HP

3/4

BLOWER MOTOR SPEEDS

5

BLOWER MOTOR RPM

1040

FILTER TYPE

Replaceable

FILTER SIZE

18 * 21 * 1

METERING DEVICE

Orifice

AUXILIARY HEATER INCLUDED

No

AUXILIARY HEATER AVAILABLE

Yes

AUXILIARY HEATER SIZES

5kW, 7.5kW, 10kW

UL LISTED

Yes

CSA LISTED

Yes

ETL LISTED

Yes

ENERGY STAR CERTIFIED

No

AHRI CERTIFIED

Yes

BASE WARRANTY

10 Year Parts, Limited Lifetime Compressor Warranty

BASE PARTS WARRANTY

10 Year

BASE COMPRESSOR WARRANTY

Limited Lifetime

CONTAINS ELECTRONICS

Yes

CONTAINS CHEMICALS

Yes

CONTAINS COMPRESSED GAS

Yes

PROPOSITION 65 WARNING

Yes

NET DEPTH (IN)

22

NET HEIGHT (IN)

45.75

NET WIDTH (IN)

19.625

NET WEIGHT (LBS)

131

GROSS DEPTH (IN)

25.6

GROSS HEIGHT (IN)

47.875

GROSS WIDTH (IN)

22.83

GROSS WEIGHT (LBS)

144

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