Description
MRCOOL Signature Series 48K BTU 4 Ton Multi-Position Air Handler
Air Handler ONLY. Professional-grade multi-position air handler for central ducted HVAC systems. Uses eco-friendly R-454B refrigerant. Pairs with Signature Series condensers for complete AHRI-certified systems.
Solution Statement
The MRCOOL Signature Series 48,000 BTU Multi-Position Air Handler (MCAEAMPEF48E21AA) is a professional-grade indoor unit designed for central ducted HVAC systems. This Air Handler ONLY unit uses eco-friendly R-454B refrigerant (lower Global Warming Potential than R-410A) and features a ECM motor for efficient, quiet airflow. The multi-position design supports upflow, downflow, and horizontal installation orientations, providing maximum flexibility for different duct configurations. This air handler must be paired with a compatible MRCOOL Signature Series condenser (AC or heat pump) to create a complete, AHRI-certified central HVAC system. Professional installation by a licensed HVAC technician is required.
Technical Specifications
| Specification | Value |
|---|---|
| Model / SKU | MCAEAMPEF48E21AA |
| Series | Signature Series Multi-Position Air Handler |
| Capacity | 48,000 BTU (4 Ton) |
| Motor Type | ECM |
| Refrigerant | R-454B (Low GWP, eco-friendly) |
| Installation Positions | Upflow / Downflow / Horizontal |
| Electrical | 208-230V / 60Hz / 1-Phase |
| Certifications | AHRI Certified, ETL Listed |
| Weight | 183.0 lbs (83.0 kg) |
| Product Type | Air Handler ONLY (condenser sold separately) |
| AHRI Reference | Available upon request |
Product Tips
- This is an Air Handler ONLY — a compatible MRCOOL Signature Series condenser (AC or heat pump) must be purchased separately to complete the system.
- Uses R-454B refrigerant — ensure your HVAC technician is certified for A2L refrigerant handling as required by local codes.
- The multi-position design allows upflow, downflow, or horizontal installation — verify your duct configuration before ordering.
- For electric heat backup, add a compatible Signature Series Heat Kit (MCHK series) to this air handler for emergency or supplemental heat.
- Pair with the MRCOOL Smart Wi-Fi Mini Stat (MSTAT01) for smart home integration and remote temperature control.
Frequently Asked Questions
Our HVAC specialists can verify AHRI compatibility and answer installation questions.
Contact Our HVAC Team
Frequently Asked Questions
What size home is the 48K BTU system designed for
The 48,000 BTU system is designed for homes requiring significant heating/cooling capacity. Consult an HVAC professional for proper sizing based on your home's Manual J load calculation.
Is this air handler compatible with my existing system
This MRCOOL Signature Series air handler is designed to pair with compatible MRCOOL condensers. Verify BTU capacity and refrigerant compatibility before purchasing.
Does this air handler require professional installation
Yes. Air handler installation requires a licensed HVAC technician for proper refrigerant handling, electrical connections, and ductwork integration.
What warranty does this MRCOOL Signature Series product carry
MRCOOL Signature Series products are backed by the MRCOOL manufacturer warranty. For warranty registration and support, contact support@hvacprosales.com or call 1-866-330-1709.
