Technical Data
Specs, manuals, videos, and product documents
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A smart, reliable choice for year-round comfort.
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The MRCOOL® Signature Series 30k Multi-Position Air Handler is engineered to provide powerful, efficient comfort in any season. Featuring advanced R-454B refrigerant, this system meets modern environmental standards while helping reduce your energy use and carbon footprint without compromising performance. Its multipositional capability allows for flexible installation in upflow, downflow, or horizontal configurations, making it a smart fit for new builds, remodels, or system upgrades. The slim, compact design makes it ideal for tight spaces such as closets, attics, or crawlspaces, while still delivering full heating and cooling power when paired with a compatible MRCOOL® condenser or heat pump. Built for long-term performance, the air handler includes a durable galvanized steel cabinet, a high-efficiency ECM blower motor, and copper "A" coils with enhanced aluminum fins for excellent heat transfer and humidity control. Internal thermal insulation helps reduce condensation and energy loss, supporting quieter operation and greater efficiency. Installation is simple and cost-effective, with a design that minimizes labor time. A built in air filter rack makes regular maintenance fast and easy, and an optional electric heat kit adds extra comfort for colder climates. The unit is fully compatible with most third-party smart thermostats, giving homeowners the freedom to control comfort with the platform of their choice. Protected by a 10-year limited parts warranty, the MRCOOL® Signature Series 30k Multi-Position Air Handler is a reliable, space-saving, energy-efficient solution for total home comfort.
AHRI certified- meets industry standards.Register your productto 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.
| Brand | MRCOOL |
| Series | Signature Series Multi-Position Air Handler |
| Model | MCAEAMPEF30C21AA |
| UPC | 840255595865 |
| GTIN | 00840255595865 |
| Unit Type | Air Handler |
| Configuration | Multi-Position |
| Certifications | UL Listed, CSA Listed, ETL Listed, AHRI Certified |
| Capacity | 30,000 BTU (2.5 Ton) |
| CFM | 983 |
| Refrigerant | R-454B |
| Electrical | 208/230V 1 Phase 60 Hz |
| Min Circuit Ampacity | 4.5A |
| Max Fuse Breaker | 6A |
| Blower Motor Type | ECM |
| Blower Motor HP | 1/2 |
| Blower Motor Speeds | 5 |
| Blower Motor RPM | 960 |
| Sound Rating | 53 dBA |
| Liquid Line Size | 3/8" |
| Suction Line Size | 3/4" |
| Drain Connection Size | 3/4" |
| Filter Type | Replaceable |
| Filter Size | 18" x 21" x 1" |
| Metering Device | Orifice |
| Auxiliary Heater Included | No |
| Auxiliary Heater Available | Yes (5kW, 7.5kW, 10kW) |
| Net Dimensions (HxWxD) | 45.75" x 19.625" x 22" |
| Net Weight | 129 lbs |
| Shipping Dimensions | 47.625" x 22.83" x 25.6" |
| Shipping Weight | 142 lbs |
| Compatible Equipment | Signature Series Top Discharge Condensers |
| Installation Flexibility | Multi-position (upflow, downflow, horizontal) |
| Refrigerant | Advanced R-454B with lower environmental impact |
| Motor Technology | High-efficiency ECM blower motor |
| Noise Reduction | Quiet operation (53 dBA) |
| Coil Technology | Copper "A" coils with enhanced aluminum fins |
| Cabinet Construction | Durable galvanized steel |
| Speed Control | 5-speed motor for precise airflow adjustment |
| Smart Home Compatibility | Works with most third-party smart thermostats |
| Heating Options | Optional electric heat kits (5kW, 7.5kW, 10kW) |
PROPOSITION 65 WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
The MRCOOL Signature Series 30k Multi-Position Air Handler features advanced ECM motor technology that provides superior energy efficiency and precise airflow control with five speed settings. The copper "A" coils with enhanced aluminum fins deliver exceptional heat transfer and humidity control for optimal indoor comfort. The durable galvanized steel cabinet ensures long-lasting performance, while comprehensive thermal insulation minimizes energy loss and prevents condensation. Operating at just 53 decibels, this air handler offers whisper-quiet performance. The ECM motor's intelligent operation automatically adjusts airflow to maintain optimal system performance, while compatibility with most third-party smart thermostats enables seamless integration into modern smart home ecosystems for ultimate comfort control.
This 2.5-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 closets, attics, and crawlspaces. The high-efficiency ECM motor delivers superior performance with lower energy consumption compared to standard PSC motors. The built-in air filter rack simplifies routine maintenance with easy access for quick filter replacements. The unit's 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.
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Product FAQs
MRCOOL products are sold through authorized retailers and distributors rather than directly by MRCOOL to consumers. Purchasing through an authorized seller helps confirm that the equipment is genuine and that the correct purchase records are available for product and warranty support.
Do not assume that MRCOOL indoor units, outdoor units, line sets, controls, or accessories are interchangeable. Use only manufacturer-approved combinations for the exact model family; in particular, MRCOOL states that R-410A products are not compatible with R-454B products and the refrigerants must never be mixed.
Eligible MRCOOL DIY systems are designed around installation-friendly components such as factory-precharged line sets and compatible connection hardware. The included components vary by generation and package, and electrical work, permits, clearances, and local code requirements still need to be followed.
MRCOOL does not dispatch field technicians. Its in-house team provides phone and email assistance for diagnosis, troubleshooting, and product guidance, while the owner arranges and pays for any local on-site technician unless a specific written warranty program states otherwise.
The model and serial number identify the exact equipment, generation, capacity, and applicable documentation or warranty. Use the identification labels on the equipment and MRCOOL’s registration guidance rather than relying only on a product title or general series name.
No. Only product families specifically identified by MRCOOL as DIY-capable should be treated as do-it-yourself systems. Other lines, including the Advantage Series, require professional HVAC installation, so always follow the installation requirements for the exact model.
MRCOOL maintains a documentation library and a product support center with model-specific installation manuals, owner manuals, technical documents, certifications, warranty information, and troubleshooting resources. Search using the exact model number because documents can differ by series, generation, capacity, and refrigerant.
MRCOOL offers a broad range of comfort products, including ductless mini-splits, central ducted split systems, packaged heat pumps, geothermal systems, water heaters, fans, thermostats, line sets, and HVAC accessories. Available capacities, refrigerants, efficiencies, and features depend on the exact product family and model.
Register the system as soon as possible after purchase and installation. Several MRCOOL residential warranty programs require registration within 60 days of installation, or within 60 days of purchase when the installation date cannot be verified, but the exact requirement is controlled by the warranty document for the specific product.
MRCOOL recommends starting with the original place of purchase because many dealers can special-order replacement parts. If that is not available, use an authorized MRCOOL parts distributor and confirm compatibility with the exact model and serial number before ordering.
MRCOOL provides support by phone at (270) 366-0457, by email at support@mrcool.com, and through its online support-request form. Have the exact model and serial number available so the support team can identify the correct product documentation and next steps.
Yes. If a local technician is scheduled, MRCOOL’s in-house support team can help coordinate troubleshooting and product guidance with that technician. The technician should have the model, serial number, system configuration, measurements, error codes, and a clear description of the issue available.
MRCOOL’s support center provides separate technical-support sections for ductless systems, residential ducted systems, product-specific error codes, wiring guidance, installation procedures, and troubleshooting articles. Use the exact series and model because codes and procedures are not universal across all MRCOOL equipment.
Register the product through MRCOOL’s online warranty-registration page. Be prepared to provide the serial number along with purchase, owner, installation-location, and installer information requested by the registration form.
No. MRCOOL publishes separate warranty terms for different product families, generations, and applications. For example, the current DIY 5th Generation warranty lists 5-year parts and 7-year compressor coverage, but that coverage should not be assumed for another MRCOOL series; always check the exact product warranty document.