MRCOOL Signature Series 3 Ton Multi-Position Air Handler | MCAEAMPEF36C21AA

Summary

The MRCOOL® Signature Series 36k Multi-Position Air Handler delivers dependable, energy-efficient comfort in any season. With the addition of environmentally friendly R-454B refrigerant, this system supports cleaner standards while helping to lower energy costs and reduce your home\'s carbon footprint. Designed for flexibility and space efficiency, the unit can be installed in upflow, downflow, or horizontal positions, making it an ideal choice to accommodate a wide variety of residential layouts. Its compact, modern design allows it to fit easily into tight areas like attics, closets, or crawl spaces without sacrificing performance. When paired with a compatible heat pump or condenser, it provides powerful, year-round heating and cooling. The air handler features a durable galvanized steel cabinet, a high-efficiency ECM blower motor, and copper \"A\" coils with enhanced aluminum fins for optimized heat transfer and humidity control. Internal thermal insulation minimizes energy loss and condensation, improving both comfort and efficiency. Installation is straightforward and designed to reduce labor time and complexity. A built in air filter rack makes maintenance quick and convenient, while an optional electric heat kit enhances performance in colder climates. For smart home convenience, this unit works seamlessly with most third-party thermostats, giving you the freedom to choose how you control your comfort without being locked into a specific brand. Backed by a 10-year limited parts warranty, the MRCOOL® Signature Series 36k Multi-Position Air Handler offers lasting performance, efficient operation, and flexible installation for total home comfort.

Important

AHRI certified - meets industry standards. Register your product to activate warranty coverage. This air handler contains R-454B refrigerant, which is classified as an A2L refrigerant. To comply with safety standards, this unit must be paired with an R-454B condenser equipped with a leakage detection system. Failure to comply with these requirements may result in safety hazards and could void the warranty.

Key Features

• 36,000 BTU capacity (3 Ton)


• Multi-position installation (upflow, downflow, horizontal)


• Environmentally friendly R-454B refrigerant


• High-efficiency ECM blower motor


• Quiet operation (55 dBA)


• Durable galvanized steel cabinet


• Copper \"A\" coils with enhanced aluminum fins


• Built-in air filter rack for easy maintenance


• Compatible with most third-party thermostats


• Optional electric heat kit available


• Internal thermal insulation


• AHRI certified


• 5-speed blower motor for precise airflow control

Complete Technical Specifications

Performance Features

Warranty Information

• 
  Registered Warranty: 10 years parts, limited lifetime compressor


• 
  Base Warranty: 10 years parts, limited lifetime compressor


• Registration may be required for full warranty coverage

Manuals & Certifications

• Product Brochure


• Installation Manual


• Warranty Information

Safety Information

PROPOSITION 65 WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

Advanced Technology

The MRCOOL Signature Series 36k Multi-Position Air Handler features advanced ECM motor technology that delivers superior energy efficiency and precise airflow control across five speed settings. The copper \"A\" coils with enhanced aluminum fins provide exceptional heat transfer and humidity control for optimal indoor comfort in larger residential spaces. The durable galvanized steel cabinet ensures long-lasting performance, while comprehensive thermal insulation minimizes energy loss and prevents condensation. Operating at just 55 decibels, this 3-ton air handler maintains quiet performance despite its high capacity. The ECM motor\'s intelligent operation automatically adjusts airflow to maintain optimal system performance, while compatibility with most third-party thermostats enables seamless integration into modern smart home ecosystems for complete comfort control.

Installation Advantages

This 3-ton air handler provides exceptional installation versatility with true multi-position capability for upflow, downflow, or horizontal configurations, making it ideal for space-constrained installations in attics, closets, and crawlspaces. The high-efficiency ECM motor delivers superior performance with lower energy consumption while handling the substantial 1131 CFM airflow requirement. The built-in air filter rack simplifies routine maintenance with easy access for quick filter replacements. The unit\'s streamlined design minimizes installation time and labor costs, while multiple optional electric heat kit sizes (5kW, 7.5kW, or 10kW) provide flexible heating capacity for various climate requirements. With its compact footprint and comprehensive compatibility with Signature Series Top Discharge Condensers, this air handler represents a premium, energy-efficient solution for residential HVAC systems requiring robust performance in larger homes and demanding applications.