MRCOOL Signature Series 1.5 Ton 14.3 SEER2 R-454B Heat Pump Condenser 208/230V MCAESHS4T1821AA
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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.
Technical Specifications
| Cooling Capacity | 17000 BTU |
| Heating Capacity | 17000 BTU |
| Tonnage | 1.5 Ton |
| SEER2 | 14.3 |
| EER2 | 11.7 |
| HSPF2 | 7.5 |
| CFM | 1950 |
| Voltage | 208/230 V |
| Phase | 1 |
| Frequency | 60 Hz |
| Max Fuse/Breaker | 20 A |
| Min Circuit Ampacity | 12.2 A |
| Refrigerant Type | R-454B |
| Refrigerant Volume | 81.1 oz |
| Sound Level | 60 dBA |
| Min Ambient Temp (Cooling) | 59°F |
| Min Ambient Temp (Heating) | 5°F |
| Liquid Line Size | 3/8" |
| Suction Line Size | 3/4" |
| Max Lineset Length | 100 ft |
| Net Dimensions (D×H×W) | 23.6" × 25" × 23.6" |
| Net Weight | 144 lbs |
| Gross Dimensions (D×H×W) | 24.8" × 26.2" × 24.8" |
| Gross Weight | 150 lbs |
Certifications
- UL Listed
- CSA Listed
- ETL Listed
- AHRI Certified
Warranty
- 10 Year Parts Warranty
- Limited Lifetime Compressor Warranty
Product Documentation
- MRCOOL Signature Series HP Condenser 1.5T Installation Manual (PDF)
- MRCOOL Signature Series HP Condenser 1.5T Warranty Document (PDF)
- MRCOOL Signature Series HP Condenser 1.5T Brochure (PDF)
- MRCOOL Signature Series HP Condenser 1.5T AHRI Certification (PDF)
- MRCOOL Signature Series HP Condenser 1.5T Energy Guide (PDF)
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.