The Grandaire 1.5 Ton 14.3 SEER2 Heat Pump Air Conditioner Condenser with R454B Refrigerant (W5H5S18AKAAA) is a single-stage outdoor heat pump condenser designed to provide both heating and cooling for residential split-system HVAC applications. It uses R-454B refrigerant and has a 14.3 SEER2 efficiency rating.

With a 1.5-ton nominal capacity, the W5H5S18AKAAA is designed for use with a compatible indoor coil and air handler or furnace to create a complete heat pump system. The unit features a scroll compressor, front-seating service valves, internal protection features, and long-line capability.

Key Features

• 1.5 Ton Capacity – Designed for residential split-system heat pump applications
• 14.3 SEER2 Efficiency – Provides efficient cooling performance when matched with a certified indoor combination
• R-454B Refrigerant – Uses a lower-GWP A2L refrigerant
• Single-Stage Heat Pump – Provides both heating and cooling operation
• Scroll Compressor – Provides reliable compressor operation
• 208–230V, Single Phase – Designed for standard residential electrical service
• Front-Seating Service Valves – Simplifies service access and refrigerant-line connections
• Internal Pressure Relief & Thermal Overload Protection – Provides additional system protection
• Long-Line Capability – Supports approved installations with extended refrigerant line lengths
• Low-Ambient Capability with Kit – Supports low-ambient operation when the appropriate kit is installed

Product Specifications

• Brand: Grandaire
• Model: W5H5S18AKAAA
• Product Type: Heat Pump Condenser
• Nominal Capacity: 1.5 Ton
• Cooling Capacity: 18,000 BTU
• Efficiency: 14.3 SEER2
• System Type: Heat Pump
• Compressor Stage: Single Stage
• Refrigerant: R-454B
• Compressor: Scroll
• Voltage: 208–230V
• Phase: Single Phase
• Suction Line Connection: 5/8"
• Liquid Line Connection: 3/8"
• Outdoor Unit Dimensions: 31.18" W x 31.18" D x 33.25" H
• Weight: 167 lb.

Benefits

• Provides both heating and cooling from one outdoor heat pump system
• Uses R-454B refrigerant with lower global warming potential
• Offers efficient 14.3 SEER2 cooling performance
• Provides dependable operation with a scroll compressor
• Supports compatible residential split-system configurations
• Includes built-in protection features for reliable operation
• Suitable for replacement HVAC installations and new system applications

Compatibility & Installation

The Grandaire W5H5S18AKAAA is designed to be paired with a compatible indoor coil and air handler or furnace. For rated system performance, the indoor and outdoor components should be matched using an appropriate AHRI-certified combination.

Installation considerations:

• Verify the indoor unit and outdoor condenser are properly matched
• Confirm electrical requirements before installation
• Verify refrigerant piping and line-set requirements
• Follow all R-454B/A2L installation and safety requirements
• Confirm system ratings using the applicable AHRI-certified combination
• Installation should be completed by a qualified HVAC professional

Frequently Asked Questions

What size is the Grandaire W5H5S18AKAAA?
It is a 1.5-ton heat pump condenser with a nominal 18,000 BTU capacity.

What refrigerant does this heat pump use?
The W5H5S18AKAAA uses R-454B refrigerant.

What is the SEER2 rating?
The model is rated at 14.3 SEER2. Actual system efficiency depends on the matched indoor equipment.

Is this unit heating and cooling?
Yes. It is a single-stage heat pump designed for both heating and cooling operation.

What voltage does this condenser require?
The model is designed for 208–230V single-phase electrical service.