MRCOOL Signature Series 1.5 Ton Multi-Position Air Handler | MCAEAMPSF18C21AA
MRCOOL Signature Series 1.5 Ton Multi-Position Air Handler | MCAEAMPSF18C21AA
Summary
The MRCOOL® Signature Series 18k Multi-Position Air Handler delivers dependable, year-round climate control with enhanced energy efficiency thanks to its use of R-454B refrigerant, an eco-friendly upgrade that reduces environmental impact without sacrificing performance. Built for flexibility, this unit supports upflow, downflow, and horizontal configurations, making it an excellent choice for compact installations such as closets, attics, and crawl spaces. Despite its slim profile, this Signature Series Air Handler provides robust heating and cooling when matched with a compatible heat pump or condenser. Its tough galvanized steel cabinet resists wear and corrosion, ensuring long-term durability. Inside, copper “A” coils with high-efficiency aluminum fins maximize heat transfer and moisture removal, while internal thermal insulation minimizes energy waste and condensation, keeping comfort high and utility bills low. Installation is streamlined with its user-friendly design, saving time and reducing labor costs. A built-in air filter rack allows for quick filter replacements, and an optional electric heat kit is available for enhanced performance in colder regions. Smart home ready, this unit works with most third-party thermostats, giving homeowners the freedom to customize their comfort without relying on proprietary controls. Covered by a 10-year limited parts warranty, the MRCOOL® Signature Series 18k Multi-Position Air Handler combines strength, efficiency, and adaptability delivering powerful, reliable comfort all year long.
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
- 18,000 BTU capacity (1.5 Ton)
- Multi-position installation (upflow, downflow, horizontal)
- Eco-friendly R-454B refrigerant
- Compact design for tight spaces
- Quiet operation (53 dBA)
- Durable galvanized steel cabinet
- Copper "A" coils with aluminum fins
- Built-in air filter rack
- Compatible with most third-party thermostats
- Optional electric heat kit available
- Internal thermal insulation
- AHRI certified
- PSC blower motor with 3 speeds
Complete Technical Specifications
| Brand | MRCOOL |
| Series | Signature Series Multi-Position Air Handler |
| Model | MCAEAMPSF18C21AA |
| UPC | 840255595841 |
| GTIN | 00840255595841 |
| Unit Type | Air Handler |
| Configuration | Multi-Position |
| Certifications | UL Listed, CSA Listed, ETL Listed, AHRI Certified |
| Capacity | 18,000 BTU (1.5 Ton) |
| CFM | 749 |
| Refrigerant | R-454B |
| Electrical | 208/230V 1 Phase 60 Hz |
| Min Circuit Ampacity | 2.1A |
| Max Fuse Breaker | 3A |
| Blower Motor Type | PSC |
| Blower Motor HP | 1/4 |
| Blower Motor Speeds | 3 |
| Blower Motor RPM | 830 |
| 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) |
| Net Dimensions (HxWxD) | 45.75" x 19.625" x 22" |
| Net Weight | 120 lbs |
| Shipping Dimensions | 47.625" x 22.83" x 25.6" |
| Shipping Weight | 133 lbs |
Performance Features
| Compatible Equipment | Signature Series Top Discharge Condensers |
| Installation Flexibility | Multi-position (upflow, downflow, horizontal) |
| Refrigerant | Eco-friendly R-454B with lower global warming potential |
| Noise Reduction | Quiet operation (53 dBA) |
| Coil Technology | Copper "A" coils with high-efficiency aluminum fins |
| Cabinet Construction | Durable galvanized steel |
| Insulation | Internal thermal insulation minimizes energy waste |
| Smart Home Compatibility | Works with most third-party thermostats |
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
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 18k Multi-Position Air Handler features copper "A" coils with high-efficiency aluminum fins that maximize heat transfer and moisture removal for optimal performance. The durable galvanized steel cabinet provides long-lasting protection against wear and corrosion, while internal thermal insulation minimizes energy waste and prevents condensation. With its PSC blower motor offering three speeds and operating at just 53 decibels, this air handler delivers quiet, efficient airflow distribution. The unit's compatibility with most third-party thermostats makes it an ideal choice for smart home integration, allowing homeowners to maintain precise climate control with their preferred thermostat system.
Installation Advantages
This 1.5-ton air handler offers exceptional installation flexibility with multi-position capability for upflow, downflow, or horizontal configurations, making it perfect for compact spaces like closets, attics, and crawl spaces. The built-in air filter rack simplifies maintenance with easy access for filter replacements. The streamlined design reduces installation time and labor costs, while the availability of optional electric heat kits (5kW or 7.5kW) provides additional heating capacity for colder climates. With its compact dimensions and comprehensive compatibility with Signature Series Top Discharge Condensers, this air handler represents a versatile and efficient solution for residential HVAC systems requiring reliable year-round performance.
