Hisense AST-18UW3SBBDH01 Wall Mount Indoor Unit 18000 Btu

Product Description

The HISENSE AST-18UW3SBBDH01 is a wall-mounted indoor unit for a ductless mini-split system, rated at 18000 BTU/h with a SEER rating of 23. Operating on 230-volt power, it delivers both heating and cooling through a hyper heat configuration, allowing effective operation in low ambient temperatures. This unit is designed for installation in residential or light-commercial spaces where a ductless split system is the preferred HVAC solution. Licensed HVAC technicians handle installation, which involves refrigerant line sets, electrical connections, and control wiring between the indoor and outdoor units.

This indoor air handler is suited for wall-mounted applications in living rooms, bedrooms, offices, and similar conditioned spaces. The hyper heat function extends the heating range into low outdoor temperatures, making it a practical choice for cold-climate installations where a standard heat pump would lose efficiency. It pairs with a compatible outdoor condensing unit as part of a complete ductless mini-split system.

Key Features

• 18000 BTU/h heating and cooling capacity
• SEER 23 energy efficiency rating for reduced operating costs
• Hyper heat technology supports effective heating at low ambient outdoor temperatures
• 230-volt operation compatible with standard residential and light-commercial electrical service
• Wall-mounted design eliminates the need for ductwork

Compatibility

Designed as an OEM indoor wall-mount air handler for use in a ductless mini-split system. Requires a compatible HISENSE outdoor condensing unit. Consult the outdoor unit specifications and system documentation to confirm matched-pair compatibility before installation.

Installation Notes

Installation must be performed by a licensed HVAC technician holding an EPA Section 608 refrigerant handling certification. Power down and lock out the electrical circuit before making any connections. The indoor unit requires a wall sleeve, refrigerant line set, condensate drain routing, and low-voltage control wiring to the outdoor unit. Follow all local mechanical and electrical codes, including NEC requirements for dedicated circuit sizing.

Technical Specifications

• Capacity: 18000 BTU/h
• Voltage: 230 volts
• SEER: 23
• System Type: Hyper Heat Cool (heating and cooling)
• Mount Type: Wall mounted
• UPC: 81008836381

Standard Information

• Brand: HISENSE
• Manufacturer Part Number: AST-18UW3SBBDH01