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

MRCOOL

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

Model: MCAESHS4T1821AA SKU: MCAESHS4T1821AA

1.5 Ton  |  SEER2 14.3  |  R-454B  |  208/230V

  • 17000 BTU cooling capacity
  • Up to 14.3 SEER2 rated efficiency
  • Scroll compressor
  • Uses R-454B refrigerant
$1,585.97 Free Shipping
In Stock

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At a Glance

Key Specifications

System Type Split System Heat Pump Condenser
Capacity 17000 BTU
Tonnage 1.5 Ton
SEER2 14.3
Voltage 208/230V · Single Phase
Refrigerant R-454B
Overview

Product Overview

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.

Additional specifications

UPC 840255595773
Series Signature Series Heat Pump Condenser
Refrigerant charge (oz) 81.1
Heating capacity (BTU/h) 17000
Airflow (CFM) 1950
Cycle (Hz) 60
Min circuit ampacity (A) 12.2
Max fuse / breaker (A) 20
Inverter No
Max line set length (ft) 100
Min ambient cooling (F) 59
Min ambient heating (F) 5
AHRI certified Yes
ENERGY STAR certified No
UL listed Yes
ETL listed Yes
Parts warranty (years) 10 Year
Compressor warranty (yrs) Limited Lifetime
Shipping W x H x D (in) 24.8 x 26.2 x 24.8
Shipping weight (lbs) 150

Documents

WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.

Technical Specifications

Performance

System TypeSplit System Heat Pump Condenser
Capacity17000 BTU
Tonnage1.5 Ton
Compressor / StagesScroll
SEER214.3
EER211.7
HSPF27.5
Sound Level60 dBA

Electrical & Fuel

Voltage208/230V
PhaseSingle Phase
RefrigerantR-454B
Connection SizeLiquid 3/8" / Suction 3/4"

Physical & Certifications

Dimensions (W x H x D)23.6 x 25 x 23.6
Weight144 lb
Color / FinishGrey
Shipping & Delivery
Orders typically ship within 1-3 business days. Freight items are delivered by appointment to a curbside address; someone must be present to receive and inspect the shipment. Inspect for damage before signing. Returns are accepted within 30 days on unused, uninstalled equipment in original packaging -- return shipping and a restocking fee may apply. See our Shipping Policy and Return & Refund Policy for full terms.
Manufacturer Warranty

Covered by MRCOOL's limited warranty. Warranty terms are set by MRCOOL and differ by product line — whether registration is required, and whether the installation has to be performed by a state-licensed HVAC contractor, is not the same across the range. In every case coverage depends on the unit being installed according to MRCOOL's instructions and all applicable codes and permits. MRCOOL's warranty document for this model is the controlling source; ask us and we'll send you the one that applies.

Professional Installation Recommended

Most HVAC equipment must be installed and connected by a licensed professional to remain safe, code-compliant, and eligible for manufacturer warranty coverage. If you're unsure about installation requirements, contact us before you order.

Before You Order

Make sure it is the right size, and that you have the rest of it

Most outdoor units ship alone. If you are not certain of the capacity, or of what has to go with this unit, these two will work it out with you.

Still deciding on the right equipment?

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