1.5 Ton Goodman 14.3 SEER2 R32 Central A/C Wall Mount Split System GLXS4BA1810, AWST18SU13 Apartment/Condo Type Air Handler
This matched Goodman system pairs the GLXS4BA1810 outdoor condenser with an AWST18SU13 wall-mount air handler to deliver 18,000 BTU of cooling on R-32 refrigerant at 14.3 SEER2, AHRI certified under number 215214928. The AWST cabinet measures just 20-1/4 inches wide and hangs on a wall or stud rather than sitting in an attic or on a platform, which is exactly what a condo utility closet, an apartment hallway alcove, or a converted laundry nook has room for. Cooling-only outdoors, electric heat indoors, and a footprint small enough for buildings where mechanical space was never generous in the first place.
Is a 1.5 Ton System the Right Size?
A 1.5 ton system is generally suited to roughly 600 to 900 square feet of conditioned space. In practice that covers studios, one-bedroom condo units, garage apartments, mother-in-law suites, and additions that were never on the original system. Because the AWST is a front-return or bottom-return wall unit, the return air comes off a grille in the closet door or the ceiling below rather than through a long duct run, which is one of the reasons this configuration works in units where the mechanical closet is measured in inches.
Square footage is only the starting point. Window area and orientation, ceiling height, insulation quality, how many people live in the space, and whether the unit is a top-floor apartment absorbing roof heat all move the load. Over-sizing a small unit is a real problem here: an oversized system short-cycles, never runs long enough to pull humidity out, and leaves a Florida condo feeling cold and clammy instead of comfortable.
Ideal for: Studios and one-bedroom apartments, condo units, small rental properties, and additions in the 600 to 900 square foot range where the equipment has to live in a wall closet.
Need more capacity? Step up to the 2 Ton Goodman 14.5 SEER2 R32 Wall Mount System GLXS4BA2410, AWST24SU13, which uses the same 20 inch cabinet width and adds a 10 kW heat option.
Recommended square footage is a general guideline only. Actual system requirements depend on insulation, window area, ceiling height, occupancy, ductwork, and local climate. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Outdoor Condenser | GLXS4BA1810 — 1.5 Ton R-32 Cooling Only Condenser |
|---|---|
| Indoor Air Handler | AWST18SU1305 or AWST18SU1308 Wall-Mount Air Handler |
| System Rating | 14.3 SEER2 — AHRI Certified Reference 215214928 |
| Cooling Capacity | 18,000 BTU / 1.5 Nominal Tons |
| Refrigerant | R-32 |
| Compressor | Single-Stage Energy-Efficient Compressor |
| Electric Heat | 5 kW or 8 kW Factory Installed |
| Electrical | 208-230V, Single Phase, 60 Hz |
| Air Handler Cabinet | 36" H x 20-1/4" W x 16-1/8" D |
The condenser and air handler ship as a factory-matched pair, so the SEER2 rating on this page is the rating for the two units running together rather than a component number. Choose the heat kilowatt at the time of purchase, since the heating elements on the AWST are factory installed rather than field added. Copper line set and thermostat are ordered separately and can be added from the copper lines and fittings selection.
Condenser & Air Handler Features
GLXS4BA1810 Outdoor Condenser
- Energy-efficient single-stage compressor
- R-32 refrigerant with lower global warming potential than R-410A
- Copper tube with enhanced aluminum fin coil, 5 mm diameter
- Factory-installed filter drier
- Sweat connection service valves with easy access to gauge ports
- Enclosed contactor and high-pressure switch
- Ground lug connection
- Capacitors with extended life
- Factory charged for 15 feet of tubing length
- AHRI Certified, ETL Listed, designed and assembled in the USA
AWST18SU13 Wall-Mount Air Handler
- Mounts to a wall or stud, no attic or platform required
- Front or bottom return air configuration
- Fully adjustable TXV metering
- Aluminum tubing coil
- 1/3 HP direct-drive multi-speed blower motor
- Sequence-controlled, rust-resistant nickel chromium heating elements
- Factory-installed R-32 sensor designed for the lifespan of the coil
- Cabinet air leakage less than 2.0% at 1.0 inch H2O
- 14" x 18" x 1" filter included
- 3/4" FPT drain connections
Buying components instead of the packaged system? The GLXS4BA1810 condenser, the AWST18SU1305 with 5 kW heat, and the AWST18SU1308 with 8 kW heat are all sold individually. If the property would benefit from heating on the refrigeration cycle instead of strip heat alone, compare the 1.5 ton GLZS4BA1810 heat pump wall mount system, or browse the full wall mount front-return air handler category.
Specifications & Manuals
Product documentation includes technical specifications for both the condenser and the wall-mount air handler, installation instructions, and warranty certificates to assist with equipment selection, installation, and service.
Frequently Asked Questions
Why choose a wall-mount air handler over a standard upflow unit?
Because of where it fits. The AWST18SU13 hangs on a wall or stud inside a shallow closet and takes its return through the front or the bottom, so it works in apartments and condos that have no attic access, no crawlspace, and no room for a floor-standing cabinet. A conventional upflow air handler needs floor area and clearance this layout usually does not have.
What is R-32 and does it change how the system is serviced?
R-32 is the lower global warming potential refrigerant Goodman uses across the GLXS4B and AWST SU13 lines. It is mildly flammable and classified A2L, so it requires technicians and tools rated for A2L refrigerants. The AWST includes a factory-installed R-32 sensor designed for the lifespan of the coil.
Should I choose the 5 kW or the 8 kW heat kit?
The heating elements are factory installed, so the choice is made at purchase and not changed later in the field. The 5 kW covers supplemental heating in mild Gulf Coast and Florida winters, while 8 kW gives more capacity for a drafty unit, a top-floor apartment, or a climate that sees genuine cold snaps. Electrical service and breaker sizing differ between the two, which is worth checking against the panel before ordering.
Does this system provide heat pump heating?
No. The GLXS4BA1810 is a cooling-only condenser, so all heating comes from the electric elements in the air handler. If you want heating produced on the refrigeration cycle, the GLZS4BA1810 heat pump version of this wall mount system is the equivalent product.
What does the 14.3 SEER2 rating on this listing actually apply to?
It applies to the GLXS4BA1810 and AWST18SU13 running as a matched pair, certified under AHRI reference 215214928. Pairing the same condenser with a different indoor unit produces a different rating, which matters when a rebate or a permit asks for the AHRI certificate.
What else do I need to complete the installation?
A copper line set sized for the run, a thermostat, a condensate drain and any required pan or float switch, an outdoor disconnect, and whatever the local code requires for equipment pad or mounting. None of that ships with the system, and line set length affects the refrigerant charge, since the condenser leaves the factory charged for 15 feet of tubing.
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).
