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 24k Cooling Only Condenser offers dependable, energy-efficient performance for homeowners looking to upgrade their comfort without increasing energy bills. With a 14.3 SEER2 and 11.7 EER2 rating, this system delivers consistent, cost-effective cooling for a wide range of residential applications. This unit comes factory pre-charged with R-454B refrigerant, a next-generation, low-GWP refrigerant specifically developed to comply with today’s stricter environmental regulations. At the heart of this high-performing unit is a durable single-speed scroll compressor, engineered to provide long-lasting, dependable operation. Scroll compressors are widely known for their quiet, efficient performance and reduced mechanical wear, making them a superior choice for residential HVAC systems. To further enhance efficiency and heat transfer capabilities, the unit features inner-groove copper tubing—a design that increases surface area contact, boosts refrigerant flow, and promotes quicker, more effective temperature regulation throughout the system. Despite its strength, the unit operates at only 60 decibels, quiet enough for everyday residential use. A sound-dampening top helps reduce noise, while a steel louver coil guard and wire fan discharge grille help safeguard internal parts and extend the unit’s lifespan. The system is backed by the MRCOOL® guarantee, a 10-year limited parts warranty and a limited compressor warranty, offering added assurance of long-term reliability and support. Efficient, quiet, and built to last, the MRCOOL® Signature Series 24k Cooling Only Condenser is a smart choice for reliable home cooling.
AHRI certified- meets industry standards.Register your productto activate warranty coverage.This condenser 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 air handler or evaporator coil 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 Air Conditioner Condenser |
| Model | MCAESAS4T2421AA |
| UPC | 840255595728 |
| GTIN | 00840255595728 |
| Unit Type | Split System AC Condenser |
| Certifications | UL Listed, CSA Listed, ETL Listed, AHRI Certified |
| Cooling Capacity | 24,000 BTU (2 Ton) |
| Efficiency Ratings | 14.3 SEER2, 11.7 EER2 |
| Refrigerant | R-454B (79.3 oz) |
| Electrical | 208/230V 1 Phase 60 Hz |
| Min Circuit Ampacity | 15.2A |
| Max Fuse Breaker | 20A |
| Compressor Type | Scroll |
| Condenser Fan Motor | PSC, 1/9 HP |
| CFM | 1950 |
| Sound Rating | 60 dBA |
| Min Ambient Cooling | 59°F |
| Max Lineset Length | 100 ft |
| Liquid Line Size | 3/8" |
| Suction Line Size | 3/4" |
| Net Dimensions (HxWxD) | 25" x 23.6" x 23.6" |
| Net Weight | 133 lbs |
| Shipping Dimensions | 26.2" x 24.8" x 24.8" |
| Shipping Weight | 139 lbs |
| Compatible Equipment | Signature Series Multi-Position or Stud Mount Air Handlers |
| Compressor Technology | Durable single-speed scroll compressor for long-term reliability |
| Refrigerant | Eco-friendly R-454B with lower global warming potential |
| Noise Reduction | Sound-dampening top for quiet operation (60 dBA) |
| Protection Features | Steel louver coil guard and wire fan discharge grille |
| Installation Features | Sweat connection service valves with easy-access gauge port |
| Extended Installation | Supports up to 100 ft line set length for flexible placement |
| Airflow Capacity | 1950 CFM for efficient cooling performance |
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 24k Cooling Only Condenser features a durable single-speed scroll compressor designed for maximum durability and energy-efficient operation. The high-efficiency inner-groove copper tubing enhances heat transfer efficiency while the specially designed sound-dampening top reduces operational noise to just 60 decibels. Built with quality components and protective features including a steel louver coil guard, this 2-ton air conditioner condenser delivers reliable performance for consistent comfort in residential spaces. With its 14.3 SEER2 cooling efficiency, this unit provides energy-saving operation without compromising on cooling power.
This 2-ton air conditioner condenser simplifies installation with its pre-charged R-454B refrigerant system. The unit supports extended line set lengths up to 100 feet, providing flexibility for various installation scenarios. The compact cabinet design allows for easy placement in tight spaces while maintaining accessibility to service valves and gauge ports for straightforward maintenance. The unit is designed to work with Signature Series Multi-Position or Stud Mount Air Handlers for complete system compatibility. With its efficient 1950 CFM airflow and durable construction, this condenser is an ideal cooling solution for residential applications requiring reliable and quiet operation.
Technical Data
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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.