Goodman - 1.5 Ton/18,000 BTU Wall Mount Air Handler With Built-In 8kW Heater - 230V - R32 - AWST18SU1308

Goodman - 1.5 Ton/18,000 BTU Wall Mount Air Handler With Built-In 8kW Heater - 230V - R32 - AWST18SU1308

Goodman air handlers are an integral part of finishing a total home environment control system. The AWST plays a key role in reducing indoor humidity to create a much more comfortable environment. In addition, the AWST works with a multi-speed ECM motor to efficiently move cooled or warmed air throughout your home at exactly the speed you need.

Features

• AWST Models: Equipped with a fully adjustable TXV
• Designed for use with R-32 Refrigerant
• Direct-drive, multi-speed motors allows air volume variation for heating/cooling
• Sequence-controlled, rust-resistant nickel chromium heating elements of 3, 5, 8, and 10 kW
• Aluminum tubing coils on all models
• Factory-installed pull-type disconnect
• Factory installed R-32 sensor designed for the lifespan of the coil.
• Thermoplastic drain pan with bottom primary and secondary drain connections
• Built-in filter rack (filter included)
• Large chassis (2.5- and 3-ton units) front return only
• Small chassis (1.5- and 2-ton units) front or bottom return
• Wall-hanging bracket provided
• AHRI Certified; ETL Listed
  

Specifications

Manual

• Spec Sheet
• Installation Manual

What our Experts Think

• 8 kW Built‑In Electric Heater – Integrated heating adds supplemental warmth without a separate furnace, perfect for shoulder seasons or mild climates where extra heat helps balance comfort.

• Wall‑Mount Installation – Space‑saving vertical design ideal for apartments, condos, bonus rooms, or areas with limited floor space.

• 1.5 Ton / 18,000 BTU Capacity – Sized for small to medium residential spaces, delivering balanced airflow for R‑32 heat pump or AC systems.

• R‑32 Refrigerant Optimized – Engineered around modern, lower‑impact R‑32 refrigerant for better efficiency and reduced environmental footprint.

• Multi‑Speed ECM Blower Motor – Electronically commutated motor enhances adjustable airflow, quieter operation, and better humidity control than standard PSC motors.

• Adjustable TXV (Thermal Expansion Valve) – Helps stabilize refrigerant flow for consistent performance and improved efficiency.

• Low Air Leakage Cabinet – Tight construction minimizes energy losses and supports more efficient indoor airflow.

• Easy Filter Access & Maintenance – Convenient access to the built‑in filter rack and service components simplifies routine upkeep.

Q&A

Q: What type of unit is the Goodman AWST18SU1308?
A: It’s a 1.5 ton wall‑mount indoor air handler designed for ducted systems, with built‑in 8 kW electric heat and compatibility with modern R32 refrigerant systems.

Q: What applications is it best suited for?
A: Ideal for small homes, apartments, condos, or multi‑family units, especially where space‑saving wall‑mount installation and supplemental heat are needed.

Q: What are the primary performance features?
A:
• 18,000 BTU nominal capacity matched to 1.5 ton cooling load.
• Direct‑drive multi‑speed ECM blower motor — for quieter operation and flexible airflow control.
• Fully adjustable TXV (thermal expansion valve) for improved cooling efficiency.

Q: How does the built‑in heater improve comfort?
A: The 8 kW electric heater provides reliable supplemental heat during cooler weather without a separate furnace, ideal in milder climates or as auxiliary heat.

Q: What installation orientation and voltage does it require?
A: Designed for vertical wall or stud mounting with 208/230 V single‑phase (60 Hz) power, making it suitable for standard residential electrical setups.

Maintenance Tips

• Replace Air Filters Every 1–3 Months: Maintains airflow, protects the blower motor, and ensures efficient heating and cooling.

• Keep Surrounding Area Clear: Remove dust, debris, or obstructions around the unit for proper airflow and safe operation.

• Inspect Condensate Drain: Ensure the drain line is clear to prevent water buildup and potential system damage.

• Check Electrical Connections: Periodically inspect wiring and connections for wear or corrosion to support the 8kW heater safely.

• Monitor Built-In Heater Function: Verify proper heater operation during heating cycles for safe and consistent performance.

• Schedule Annual Professional Maintenance: Technicians should inspect the blower motor, coils, refrigerant lines, and overall air handler operation yearly.

• Listen for Unusual Signs: Strange noises, odors, or airflow changes should be addressed promptly to prevent larger issues.