1.5 Ton Goodman 14.3 SEER2 R32 Central A/C Wall Mount Split System GLXS4BA1810, AWST18SU13 Apartment/Condo Type Air Handler
This R-32 split system is built for apartments, condos and other spaces where the air handler lives inside a wall closet instead of an attic. It pairs the 18,000 BTU/h GLXS4BA1810 outdoor condenser with the AWST18SU13 wall-mount air handler under AHRI certificate #215214928 at 14.3 SEER2. The AWST18SU13 recesses between wall studs or hangs from its offset bracket in a vertical upflow position. It includes a factory-installed pull-out disconnect, a built-in filter rack and a refrigerant detection system for R-32. It's a practical replacement for property managers, condo owners and contractors updating compact, closet-mounted systems. Factory pre-installed 5 kW or 8 kW heat can be selected when ordering.
Is a 1.5 Ton Air Conditioning System the Right Size?
A 1.5 ton system provides 18,000 BTU/h of nominal cooling. It's commonly used in studio, one-bedroom and smaller two-bedroom apartments and condos, often somewhere around 600–900 sq. ft. as a rough guide. Unit location matters. A top-floor corner condo gains far more heat than an interior unit with neighbors on every side.
Also consider window area and exposure, how many people live in the unit, kitchen heat and the condition of any short duct runs. Goodman's R-32 safety guidance also sets a minimum conditioned area of 200 sq. ft. for the AWST18SU13, which nearly every apartment exceeds. A load calculation confirms that 1.5 tons is the right match.
Ideal for: Studio and one-bedroom apartments, smaller condos, in-law suites and multifamily units with an in-wall air handler closet.
Need more capacity? Step up to the 2 Ton Goodman 14.5 SEER2 R32 Wall Mount Split System GLXS4BA2410, AWST24SU13, which uses the same small-chassis cabinet.
Recommended home sizes are general guidelines only. Actual system requirements depend on insulation, climate, windows, ductwork, occupancy and a proper load calculation. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Outdoor Condensing Unit | GLXS4BA1810 — 1.5 Ton R32 Split System Air Conditioner |
|---|---|
| Indoor Air Handler | AWST18SU13 Wall-Mount Air Handler (Small Chassis, 20.2" Cabinet) |
| Application | Apartment/Condo Wall Mount Cooling System (Factory Electric Heat Optional) |
| Refrigerant | R-32 |
| Compressor | Single-Stage Rotary Compressor with Advanced Copeland® Technology |
| Metering Device | Factory-Installed Thermal Expansion Valve (TXV) |
| Electrical | 208/230V, Single Phase, 60 Hz Condensing Unit — 10.9 MCA / 15A Max Overcurrent |
| Air Handler Electrical | 208/230V, Single Phase — See Rating Plate (Varies with Heat Option) |
The GLXS4BA1810 condenser is compact at 26" x 26" x 27" and 117 lbs, which makes it well suited to balconies, small side yards and a condenser wall bracket or pad. The AWST18SU13 air handler uses the small chassis with front or bottom return, a 14" x 18" x 1" filter and 4" fresh air knockouts on both sides. If your building has attic or closet space for a standard air handler instead, compare the 1.5 ton GLXS4BA1810 system with the AMST24BU1300.
Condensing Unit & Air Handler Features
GLXS4BA1810 Outdoor Condensing Unit
- 18,000 BTU/h nominal cooling capacity
- Single-stage rotary compressor with Advanced Copeland® Technology
- Compact 26" x 26" x 27" cabinet, 117 lbs
- 74 dBA rated sound level
- Factory charged for 15 ft. of tubing (53 oz. R-32)
- 3/8" liquid and 3/4" suction sweat service valves
- Factory-installed filter drier and high-pressure switch
- Architectural Gray finish with 500-hour salt-spray approval
- Meets 2023 Florida Building Code hurricane-wind requirements when anchored
- 10-year parts limited warranty with online registration within 60 days
AWST18SU13 Wall-Mount Air Handler
- Designed to recess into a wall or hang in a vertical upflow position
- Offset wall-hanging bracket attached to the rear of the cabinet
- Small chassis with front or bottom return
- Factory-installed pull-type disconnect
- Built-in filter rack with 14" x 18" x 1" filter included
- R-32 refrigerant detection system with leak mitigation mode
- Direct-drive, multi-speed motor with five speed taps
- Bottom primary and secondary drain connections (3/4" NPT)
- 4" fresh air knockouts on both sides of the cabinet
- Factory pre-installed 5 kW or 8 kW heat available
Specifications & Manuals
Product documentation includes condenser specifications, wall-mount air handler dimensions and airflow tables, R-32 installation and refrigerant detection instructions, and warranty certificates for both components.
Frequently Asked Questions
How much wall space does the AWST18SU13 need?
The AWST18SU13 uses Goodman's small chassis with a 20.2" cabinet width. It can recess between studs using the front flange holes or hang from its offset bracket. Goodman requires at least 24" of clear service space in front of the unit.
Why is this wall mount rated 14.3 SEER2 while the ducted 1.5 ton is listed higher?
SEER2 is rated for each specific indoor and outdoor combination. The GLXS4BA1810 with the AWST18SU13 is AHRI certified at 14.3 SEER2 (#215214928). The same condenser paired with the multi-position AMST24BU1300 carries a different rating.
What heat options are available for the AWST18SU13?
This system can be ordered with factory pre-installed 5 kW (AWST18SU1305) or 8 kW (AWST18SU1308) electric heat, selected in the heat strip option when you order.
Can the AWST18SU13 use a bottom return?
Yes. The small-chassis AWST18 and AWST24 support front or bottom return. For a bottom return, the installer discards the drain access panel in the bottom of the unit.
What is the minimum conditioned area for this R-32 wall mount?
Goodman's R-32 mitigation table lists a minimum total conditioned area of 200 sq. ft. for the AWST18SU13, along with a minimum circulation airflow of 361 CFM during mitigation mode.
Is there a 1.5 ton heat pump version of this wall mount system?
Yes. For heat pump heating in the same wall closet, see the 1.5 ton Goodman R32 heat pump wall mount system GLZS4BA1810, AWST18SU13.
Click On Links Below For Specifications & Manuals:
GLXS4 Technical Specifications
GLXS Installation Manual
GLXS,GLZS Warranty Certificate
AWST Technical Specifications
AWST Installation Manual
AWST Warranty Certificate"SEER2" stands for Seasonal Energy Efficiency Ratio 2. Specifically, SEER2 is the total heat removed from the conditioned space during the annual cooling season. The M1 testing procedure will increase systems' external static pressure by a factor of five to better reflect field conditions of install equipment. With this change, new nomenclature will be used to denote M1 ratings (including EER2 and HSPF2).
