Hisense AST-18UW3SBBDH00 Wall Mount Indoor Unit 18000 Btu

Product Description

The HISENSE AST-18UW3SBBDH00 is a wall mounted indoor unit designed for ductless mini-split systems operating on 230 volts. Rated at 18000 BTU/h with a SEER rating of 23, this unit delivers both heating and cooling from a single wall-mounted head. The high SEER 23 efficiency rating makes it well suited for installations where energy performance is a priority. HVAC technicians install this unit as the indoor air handler component of a complete ductless split system, pairing it with a compatible outdoor condensing unit to form a fully functional heat-cool system.

This indoor unit is intended for residential and light commercial ductless mini-split applications where ducted systems are impractical or unavailable. Typical install scenarios include room additions, converted spaces, server rooms, and zone-controlled areas within larger structures. The wall-mounted configuration positions the unit high on an interior wall for optimal airflow distribution across the conditioned space. Both heating and cooling operation make it a year-round solution in a single installed unit.

Key Features

• 18000 BTU/h capacity for heating and cooling in a single unit
• SEER 23 efficiency rating for reduced operating costs
• 230-volt operation suitable for standard dedicated mini-split circuits
• Wall-mounted indoor head design for high-wall installation
• Heat and cool operation provides year-round climate control

Compatibility

Designed as an OEM indoor wall-mounted head unit for use within a compatible ductless mini-split system requiring an 18000 BTU/h, 230-volt indoor unit. Consult the outdoor unit documentation to confirm matched-system compatibility before installation.

Installation Notes

Installation should be performed by a licensed HVAC technician in accordance with local mechanical codes and the manufacturer installation instructions. Disconnect and lock out all electrical power before making any electrical connections. The refrigerant line set connection and system commissioning require an EPA Section 608 certified technician. Do not operate the indoor unit without a fully charged and leak-tested refrigerant circuit in place.

Technical Specifications

• Capacity: 18000 BTU/h
• Voltage: 230 volts
• SEER: 23
• Operation: Heat and Cool
• Unit Type: Wall Mounted Indoor Unit

Standard Information

• Brand: HISENSE
• Manufacturer Part Number: AST-18UW3SBBDH00