MRCOOL® Signature 3 Ton 36K BTU Split System Multi-Position Air Handler, MCAEAMPEF36C21AA

Product Description 

MRCOOL® Signature Series 36K Multi-Position Air Handler (230V)

The MRCOOL® Signature Series 36K Multi-Position Air Handler is engineered to deliver strong airflow, quiet operation, and installation flexibility for modern 3-ton residential HVAC systems. Designed to pair seamlessly with MRCOOL® Signature Series top-discharge condensers and heat pumps, this air handler supports upflow, downflow, and horizontal configurations, making it ideal for new construction, replacements, and space-limited installs.

At the core of the system is a high-efficiency ECM blower motor, which provides smoother airflow, improved humidity control, and reduced electrical consumption compared to traditional blower designs. When matched with a compatible condenser or heat pump, the system delivers reliable heating and cooling performance while helping homeowners manage long-term energy costs.

The cabinet is built from heavy-gauge galvanized steel for durability and corrosion resistance. Inside, copper “A” coils with enhanced aluminum fins maximize heat transfer and moisture removal, improving overall system efficiency. Internal thermal insulation reduces condensation and sound transmission, allowing the unit to operate quietly at just 55 dBA, making it well-suited for residential living spaces.

Installation is straightforward thanks to an installer-friendly layout that reduces labor time and simplifies service access. A built-in filter rack allows for easy maintenance, while support for optional electric heat kits adds supplemental heating capability in colder climates. The air handler is also compatible with most third-party smart thermostats, giving homeowners full control without being locked into proprietary systems.

Backed by a 10-year limited parts warranty, the MRCOOL® Signature Series 36K Multi-Position Air Handler delivers dependable performance, efficient airflow, and flexible installation—making it a strong indoor solution for 3-ton split-system applications.

SYSTEM COMPATIBILITY

✔ MRCOOL® Signature Series top-discharge AC condensers

✔ MRCOOL® Signature Series heat pump condensers

✔ Split-system applications

✔ Optional electric heat kits

1. 5kW,   Model- MCAEHFD5X1AA

2. 7.5kW, Model- MCAEHFD7X1AA

3. 10kW, Model- MCAEHWD10X1AA

✔ R-454B refrigerant systems

TECHNICAL SPECIFICATIONS 

Brand: MRCOOL

Series: Signature Series

Model: MCAEAMPEF36C21AA

Unit Type: Air Handler

Mount Type: Multi-Position

Capacity: 36,000 BTU

Tonnage: 3 Ton

Airflow: 1,131 CFM

Voltage: 208/230V

Phase: 1

Frequency: 60 Hz

Max Breaker: 6A

Min Circuit Ampacity: 4.5A

Refrigerant Type: R-454B

Liquid Line: 3/8”

Suction Line: 3/4”

Drain Connection: 3/4”

Blower Motor Type: ECM

Blower Motor HP: 1/2 HP

Blower Speeds: 5

Blower RPM: 1,000

Sound Rating: 55 dBA

Filter Type: Replaceable

Filter Size: 18 × 21 × 1

Metering Device: Orifice

Auxiliary Heat Included: No

Auxiliary Heat Available: Yes

Aux Heat Sizes: 5kW, 7.5kW, 10kW

Certifications: AHRI, UL, CSA, ETL

ENERGY STAR®: No

Warranty:

• 10-Year Parts Warranty

DIMENSIONS & WEIGHT

Net Dimensions:

• Width: 19.625”

• Depth: 22”

• Height: 45.75”

Net Weight: 129 lbs

Shipping Dimensions:

• Width: 22.83”

• Depth: 25.6”

• Height: 47.625”

Shipping Weight: 142 lbs

Frequently Asked Questions 

What systems pair with this air handler?

This air handler is designed for MRCOOL Signature Series top-discharge AC and heat pump condensers.

Does this unit use a variable-speed blower?

Yes. It features an ECM blower motor with 5 speed settings for efficient, quiet airflow.

Can it be installed horizontally?

Yes. The unit supports upflow, downflow, and horizontal installations.

Is it compatible with R-454B refrigerant systems?

Yes. It is fully designed for R-454B refrigerant compatibility.

Can auxiliary heat be added?

Yes. Optional 5kW, 7.5kW, or 10kW electric heat kits are supported.

Why Buy From MRCOOL DIRECT?

When you order from MRCOOL Direct, you get:

• ✅ Authorized MRCOOL® dealer – Your warranty is protected
• ✅ Factory-fresh units – No refurbished or mystery sources
• ✅ Fast U.S. shipping – Most in-stock items ship in 1–3 business days
• ✅ Financing options – Make high-efficiency comfort more affordable
• ✅ Real product support – Help with sizing, line set selection, and DIY questions
• ✅ No third-party marketplace middlemen – Just genuine MRCOOL® systems from a trusted MRCOOL® dealer.

BUY DIRECT!

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615-553-8118

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