MRCOOL Signature Series 4 Ton 48K BTU 13.8 SEER2 R-454B AC Condenser 208/230V MCAESAS4T4821AA
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The MRCOOL® Signature Series 48k Cooling Only Condenser offers efficient, dependable cooling designed to meet the needs of modern homeowners. With a 13.8 SEER2 and 11.2 EER2 rating, this unit is built to deliver comfort while helping lower your energy bills. Whether you’re replacing an older system or installing in a new build, this condenser delivers performance you can trust.
Pre-charged with R-454B refrigerant, the unit meets current environmental standards while maintaining strong cooling capabilities. At the heart of the system is the reliable scroll compressor, supported by inner-groove copper tubing for efficient heat exchange and improved thermal conductivity.
Though powerful, the system is surprisingly quiet. Operating at just 65 decibels, about as loud as a dishwasher or a normal conversation, it’s ideal for residential use where noise can be a concern. A sound-dampening top reduces operating volume, while a steel louver coil guard and wire fan discharge grille further protect internal components from debris, impacts, and unruly weather conditions.
With compact sizing and user-friendly service features like sweat connection valves and a convenient gauge port, installation and maintenance are simple. MRCOOL® also includes its industry-leading 10-year limited parts warranty and a limited lifetime compressor warranty.
The MRCOOL® Signature Series 48k Cooling Only Condenser is a strong, smart choice for year-round cooling comfort.
Technical Specifications
| SKU | MCAESAS4T4821AA |
| Cooling Capacity | 45,000 BTU |
| Tonnage | 4 Ton |
| SEER2 | 13.8 |
| EER2 | 11.2 |
| Voltage | 208/230V |
| Phase | 1 |
| Frequency | 60 Hz |
| Max Fuse/Breaker | 50 A |
| Min Circuit Ampacity | 30 A |
| Refrigerant Type | R-454B |
| Refrigerant Volume | 116.4 oz |
| Sound Level | 65 dBA |
| Min Ambient Temp (Cooling) | 59°F |
| Liquid Line Size | 3/8" |
| Suction Line Size | 7/8" |
| Max Lineset Length | 150 ft |
| Net Dimensions (D×H×W) | 29.14" × 32.875" × 29.14" |
| Net Weight | 204 lbs |
| Gross Dimensions (D×H×W) | 30.3" × 34.8" × 30.3" |
| Gross Weight | 214 lbs |
Certifications
- UL Listed
- ETL Listed
- AHRI Certified
Warranty
- 10 Year Parts Warranty
- Limited Lifetime Compressor Warranty
Product Documentation
- MRCOOL Signature Series AC Condenser 4T Installation Manual (PDF)
- MRCOOL Signature Series AC Condenser 4T Warranty Document (PDF)
- MRCOOL Signature Series AC Condenser 4T Brochure (PDF)
- MRCOOL Signature Series AC Condenser 4T AHRI Certification (PDF)
- MRCOOL Signature Series AC Condenser 4T Energy Guide (PDF)
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.