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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

Capacity & efficiency
TypeCondenser (outdoor unit)
SeriesSignature Series
Cooling capacity45,000 BTU
Nominal size4 tons
SEER213.8
EER211.2
Airflow4000 CFM
Sound level65 dBA
Electrical
Voltage208/230V
Phase1-phase
Min. circuit ampacity (MCA)30 A
Max. breaker (MOP)50 A
Refrigerant & line set
RefrigerantR-454B
Factory charge116.4 oz
Max. line length150 ft
Liquid line3/8"
Suction line7/8"
Physical
Dimensions (in)29.14 W × 29.14 D × 32.875 H
Weight204 lb
Shipping weight214 lb
ColorGrey
Certifications, warranty & ordering
AHRI certifiedYes
Safety listingUL, ETL
Parts warranty10 years
UPC840255595759