MRCOOL® Signature 1.5 Ton up to 14.3 SEER2 18,000 BTU Split Air Conditioner, MCAESAS4T1821AA

Product Description 

 

MRCOOL® Signature Series 18K 1.5-Ton Cooling-Only AC Condenser (230V)

 

The MRCOOL® Signature Series 18K (1.5-Ton) Air Conditioner Condenser is a dependable solution for homeowners who want reliable cooling, quiet operation, and long-term value without unnecessary complexity. It’s an excellent choice for replacing an older AC unit or installing a new cooling-only system in warm-weather climate's

With an efficiency rating of 14.3 SEER2 and 11.7 EER2, this condenser delivers steady, cost-effective cooling while helping keep energy bills in check. The unit ships factory pre-charged with R-454B refrigerant, a next-generation, low-GWP refrigerant designed to meet modern environmental standards while maintaining strong performance. The factory charge also helps reduce installation time and labor costs.

At the core of the system is a single-speed scroll compressor, widely trusted in residential HVAC for its durability, quiet performance, and long service life. Inner-groove copper tubing enhances heat transfer efficiency, allowing the system to cool more evenly and respond quickly to changing indoor temperatures.

Despite its solid output, the unit operates at just 60 dBA, making it suitable for residential neighborhoods. A sound-dampening top, combined with a steel louvered coil guard and wire fan discharge grille, helps protect internal components while reducing operating noise and extending the lifespan of the system.

Designed to work with MRCOOL® Signature Series multi-position or stud-mount air handlers, this condenser is backed by a 10-year limited parts warranty and a limited lifetime compressor warranty, giving homeowners confidence in their investment for years to come.

If you’re looking for simple, efficient, and dependable cooling, the MRCOOL Signature Series 18K AC condenser delivers exactly that.

 

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

✔ Also works with Furnaces 

TECHNICAL SPECIFICATIONS 

Brand: MRCOOL

Series: Signature Series

Model: MCAESAS4T1821AA

Unit Type: Split System Air Conditioner Condenser

 

Cooling Capacity: 17,000 BTU

Tonnage: 1.5 Ton

 

SEER2: 14.3

EER2: 11.7

 

Voltage: 208/230V

Phase: 1

Frequency: 60 Hz

Max Breaker: 20A

Min Circuit Ampacity: 12.2A

 

Refrigerant Type: R-454B

Refrigerant Charge: 74 oz

Liquid Line: 3/8”

Suction Line: 3/4”

Max Lineset Length: 100 ft

Compressor Type: Single-Speed Scroll

Inverter Driven: No

Minimum Ambient Cooling: 59°F

Sound Rating: 60 dBA

Certifications: AHRI, UL, CSA, ETL

ENERGY STAR®: No

 

Warranty:

• 10-Year Parts Warranty

• Limited Lifetime Compressor Warranty

 

DIMENSIONS & WEIGHT

 

Net Dimensions:

• Width: 23.6”

• Depth: 23.6”

• Height: 25”

Net Weight: 132 lbs

 

Shipping Dimensions:

• Width: 24.8”

• Depth: 24.8”

• Height: 26.2”

Shipping Weight: 139 lbs

 

Frequently Asked Questions 

Is this a heat pump or cooling-only unit?

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

Which air handlers are compatible?

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

Is the refrigerant environmentally friendly?

Yes. The unit uses R-454B, a low-GWP refrigerant developed to reduce environmental impact.

How quiet is this condenser?

It operates at 60 dBA, similar to a dishwasher.

 

What warranty is included?

MRCOOL backs this unit with 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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