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MRCOOL

MRCOOL Signature 1.5 Ton up to 14.3 SEER2 18,000 BTU Split System Heat Pump

MCAESHS4T1821AA

17,000 BTU · 14.3 SEER2 · 208/230V · R-454B

Part of Signature Series – Complete Systems

Cooling capacity
17,000 BTU1.5 tons
Efficiency
14.3 SEER2
Power
208/230V20A 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 18k Heat Pump Condenser offers efficient, reliable comfort all year long. Rated at 14.3 SEER2 and 11.7 EER2, it delivers dependable heating and cooling while helping lower monthly energy bills. Whether upgrading an old system or installing new, this unit balances performance, efficiency, and value. Pre-charged with eco-friendly R-454B refrigerant, this unit supports reduced environmental impact while maintaining strong performance. The pre-charged design streamlines installation and cuts labor time, making it ideal for both contractors and homeowners. At the heart of the system is a single-speed scroll compressor, engineered for stable, efficient operation. Inner-groove copper tubing enhances heat transfer, boosting responsiveness and energy efficiency. Built-in sensors monitor internal temperature and pressure, helping protect against extreme conditions. An intelligent defrost function keeps the unit running smoothly in cold weather. Despite its power, the unit runs quietly at just 60 decibels, about as loud as the average dishwasher, with a specially-engineered sound-dampening top to reduce noise. Compact and lightweight, the unit installs easily in tight spaces. And maintenance is simple with accessible service valves and gauge ports. A 10-year limited parts warranty and a limited lifetime compressor warranty offers added peace of mind. The MRCOOL® Signature Series 18k Heat Pump Condenser is a durable, efficient, and smart investment in home comfort.

Documents & manuals

Specifications

Capacity & efficiency
TypeComplete system — heat pump (heats & cools)
SeriesSignature Series
Cooling capacity17,000 BTU
Heating capacity17,000 BTU
Nominal size1.5 tons
SEER214.3
EER211.7
Heats down to5°F outdoor
Airflow1950 CFM
Sound level60 dBA
Electrical
Voltage208/230V
Phase1-phase
Min. circuit ampacity (MCA)12.2 A
Max. breaker (MOP)20 A
Refrigerant & line set
RefrigerantR-454B
Factory charge81.1 oz
Max. line length100 ft
Liquid line3/8"
Suction line3/4"
Physical
Dimensions (in)23.6 W × 23.6 D × 25 H
Weight144 lb
Shipping weight150 lb
ColorGrey
Certifications, warranty & ordering
AHRI certifiedYes
Safety listingUL, ETL
Parts warranty10 years
UPC840255595773