MRCOOL® Signature 4 Ton 48K BTU Split Air Conditioner Condenser, MCAESAS4T4821AA

Product Description 

 

MRCOOL® Signature Series 48K 4-Ton Cooling-Only AC Condenser (230V)

The MRCOOL® Signature Series 48K (4-Ton) Air Conditioner Condenser is built for larger homes and high-demand cooling applications, delivering dependable performance when outdoor temperatures climb. Whether you’re replacing an aging AC unit or installing a new cooling-only system, this condenser provides steady comfort and proven reliability.

With efficiency ratings of 13.8 SEER2 and 11.2 EER2, this unit balances strong cooling output with responsible energy use, helping manage utility costs in peak summer months. The condenser ships factory pre-charged with R-454B refrigerant, a next-generation, low-GWP refrigerant that meets modern environmental standards while maintaining excellent cooling performance. The factory charge also helps simplify installation and reduce labor time.

At the heart of the system is a durable single-speed scroll compressor, known for quiet operation, long service life, and consistent output. Inner-groove copper tubing improves heat transfer efficiency, allowing the system to respond quickly and cool evenly throughout the home.

Despite its higher capacity, the unit operates at just 65 dBA, comparable to normal household noise levels. A sound-dampening top, paired with a steel louvered coil guard and wire fan discharge grille, helps reduce noise, protect internal components, and extend the life of the condenser.

Designed to pair seamlessly with MRCOOL® Signature Series multi-position or stud-mount air handlers, this cooling-only condenser is backed by a 10-year limited parts warranty and a limited lifetime compressor warranty, giving homeowners long-term confidence in their investment.

For homes that require powerful cooling, quiet operation, and long-term durability, the MRCOOL Signature Series 48K AC condenser is a smart, dependable choice.

 

 COMPATIBILITY & SYSTEM PAIRINGS 

✔ MRCOOL® Signature Series Multi-Position Air Handler

✔ MRCOOL® Signature Series Stud-Mount Air Handler

✔ Cooling-only split-system applications

✔ Factory pre-charged R-454B refrigerant

✔ VersaPro Furnaces 

 

TECHNICAL SPECIFICATIONS 

Brand: MRCOOL

Series: Signature Series

Model: MCAESAS4T4821AA

Unit Type: Split System Air Conditioner Condenser

 

Cooling Capacity: 45,000 BTU

Tonnage: 4 Ton

SEER2: 13.8

EER2: 11.2

 

Voltage: 208/230V

Phase: 1

Frequency: 60 Hz

Max Breaker: 50A

Min Circuit Ampacity: 30A

 

Refrigerant Type: R-454B

Refrigerant Charge: 116.4 oz

Liquid Line: 3/8”

Suction Line: 7/8”

Max Lineset Length: 150 ft

Compressor Type: Single-Speed Scroll

Inverter Driven: No

Minimum Ambient Cooling: 59°F

Sound Rating: 65 dBA

 

Certifications: AHRI, UL, CSA, ETL

ENERGY STAR®: No

Warranty:

• 10-Year Parts Warranty

• Limited Lifetime Compressor Warranty

 

DIMENSIONS & WEIGHT

Net Dimensions:

• Width: 29.14”

• Depth: 29.14”

• Height: 32.875”

Net Weight: 204 lbs

 

Shipping Dimensions:

• Width: 30.3”

• Depth: 30.3”

• Height: 34.8”

Shipping Weight: 214 lbs

 

Frequently Asked Questions  

Is this a heat pump or cooling-only system?

This is a cooling-only air conditioner condenser and does not provide heating.

What air handlers are compatible with this unit?

It pairs with MRCOOL Signature Series multi-position and stud-mount air handlers.

Is R-454B refrigerant environmentally friendly?

Yes. R-454B is a low-GWP refrigerant designed to reduce environmental impact while maintaining strong cooling performance.

How loud is this condenser?

It operates at 65 dBA, similar to everyday household sounds.

What warranty coverage is included?

MRCOOL includes a 10-year parts warranty and a limited lifetime compressor warranty.

Why Buy From MRCOOL DIRECT?

When you order from MRCOOL Direct, you get:

• ✅ Authorized MRCOOL® dealer – Your warranty is protected
• ✅ Factory-fresh units – No refurbished or mystery sources
• ✅ Fast U.S. shipping – Most in-stock items ship in 1–3 business days
• ✅ Financing options – Make high-efficiency comfort more affordable
• ✅ Real product support – Help with sizing, line set selection, and DIY questions
• ✅ No third-party marketplace middlemen – Just genuine MRCOOL® systems from a trusted MRCOOL® dealer.

BUY DIRECT!

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615-553-8118

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