MRCOOL
MRCOOL Signature 4 Ton up to 13.8 SEER2 48,000 BTU Split Air Conditioner
MCAESAS4T4821AA
45,000 BTU · 13.8 SEER2 · 208/230V · R-454B
Part of Signature Series – Condensers
- Cooling capacity
- 45,000 BTU4 tons
- Efficiency
- 13.8 SEER2
- Power
- 208/230V50A breaker
- Refrigerant
- R-454B
Call for pricing Add it to your cart and send us a quote request — or call 678-467-5515.
Not sure about the size? Use the BTU sizing calculator, or call us and we'll size it with you. Professional installation by a licensed HVAC contractor is required for the manufacturer warranty.
Distributor pricing and stock: call 678-467-5515 or email sales@discountkings.net.
About this product
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.
Documents & manuals
Specifications
| Type | Condenser (outdoor unit) |
|---|---|
| Series | Signature Series |
| Cooling capacity | 45,000 BTU |
| Nominal size | 4 tons |
| SEER2 | 13.8 |
| EER2 | 11.2 |
| Airflow | 4000 CFM |
| Sound level | 65 dBA |
| Voltage | 208/230V |
|---|---|
| Phase | 1-phase |
| Min. circuit ampacity (MCA) | 30 A |
| Max. breaker (MOP) | 50 A |
| Refrigerant | R-454B |
|---|---|
| Factory charge | 116.4 oz |
| Max. line length | 150 ft |
| Liquid line | 3/8" |
| Suction line | 7/8" |
| Dimensions (in) | 29.14 W × 29.14 D × 32.875 H |
|---|---|
| Weight | 204 lb |
| Shipping weight | 214 lb |
| Color | Grey |
| AHRI certified | Yes |
|---|---|
| Safety listing | UL, ETL |
| Parts warranty | 10 years |
| UPC | 840255595759 |

