1.5 Ton Goodman 14.3 SEER2 R32 Heat Pump Wall Mount System GLZS4BA1810, AWST18SU13 Apartment/Condo Type
The Goodman 1.5 ton wall-mount heat pump system pairs the GLZS4BA1810 R-32 outdoor unit with the AWST18SU13 wall-hung air handler. It is an AHRI-certified match (AHRI #215427954) rated at 14.3 SEER2. The air handler is just 20" wide and 36" tall, hangs on the wall from the included bracket, and supports a factory-installed electric heat strip. It's a natural fit for property managers, condo owners, and contractors replacing original equipment in small apartment and condo mechanical closets.
Is a 1.5 Ton Heat Pump System the Right Size?
This is the smallest system in Goodman's R-32 wall-mount line, designed for compact units such as studios, efficiencies, and one-bedroom apartments. In multi-family buildings, shared walls often reduce heating and cooling loads, so smaller systems frequently do the job.
Final sizing still depends on window area, exterior wall exposure, top-floor roof gain, insulation, and local climate. Our AC tonnage and BTU calculator is a quick place to start.
Ideal for: Studio and one-bedroom apartments, small condos, efficiency units, and other multi-family spaces with a wall-hung air handler closet.
Need more capacity? Step up to the 2 Ton Goodman 14.5 SEER2 R32 Heat Pump Wall Mount System GLZS4BA2410, AWST24SU13, which uses the same compact air handler cabinet.
Recommended sizing is a general guideline only. Actual system requirements depend on insulation, climate, ductwork, windows, occupancy, and home layout. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Outdoor Heat Pump | GLZS4BA1810 — 1.5 Ton R-32 Heat Pump |
|---|---|
| Indoor Air Handler | AWST18SU13 Wall-Mount Air Handler (Small Chassis) |
| Application | Apartment/Condo Wall-Mount Split System Heat Pump |
| Refrigerant | R-32 |
| Compressor | Single-Stage Rotary Compressor |
| Efficiency | 14.3 SEER2 — AHRI #215427954 |
| Electrical | 208/230V, Single Phase, 60 Hz Outdoor Unit |
| Air Handler Electrical | 208/230V, Single Phase, 60 Hz (MCA/MOP varies by heat kit) |
The AWST18SU13 includes a wall-hanging bracket, a factory-installed pull-type disconnect, and a built-in filter rack with filter, so it drops into a typical condo closet with minimal extra parts. Choose a 5 kW or 8 kW factory-installed heat strip, a 3/4" x 3/8" line set, or a thermostat when you order. Browse more wall-mount air handlers for apartments and condos.
Heat Pump & Air Handler Features
GLZS4BA1810 Outdoor Heat Pump
- 18,000 BTU/h nominal cooling and heating
- High-efficiency single-stage rotary compressor
- SmartShift technology for quiet, reliable defrost
- Factory-installed bi-flow liquid-line filter drier
- Suction-line accumulator and crankcase heater
- Charged for 15' of 3/8" liquid line
- 11.2 A MCA, 15 A max overcurrent protection
- Compact 29" W x 29" D x 32-1/2" H cabinet
- 165 lb shipping weight
- Meets 2023 Florida Building Code hurricane requirements when properly anchored
AWST18SU13 Wall-Mount Air Handler
- Small chassis: 36" H x 20-3/16" W x 16-1/8" D
- Fully adjustable TXV
- 1/3 HP direct-drive, multi-speed ECM blower
- Aluminum tubing evaporator coil
- Factory-installed R-32 refrigerant sensor
- Front or bottom return
- Factory-installed pull-type disconnect
- Built-in filter rack with 14" x 18" x 1" filter included
- Wall-hanging bracket provided
- Factory-installed nickel-chromium heat strip options
Specifications & Manuals
Product documentation includes outdoor heat pump and wall-mount air handler technical specifications, installation instructions, and Goodman warranty information to assist with equipment selection, installation, and service.
Frequently Asked Questions
What kind of apartment is the 1.5 ton GLZS4BA1810 wall-mount system built for?
It's sized for compact multi-family spaces such as studios, one-bedroom apartments, and small condos with a wall-hung air handler closet. Confirm sizing with a load calculation.
Can the AWST18SU13 use a bottom return?
Yes. The small-chassis AWST models (1.5 and 2 ton) support front or bottom return, which gives more flexibility when replacing existing closet units.
Which heat strip sizes are available for the 1.5 ton air handler?
Goodman builds the AWST18SU13 with factory-installed 3, 5, or 8 kW heat. Budget Heating offers this system with the 5 kW (AWST18SU1305) or 8 kW (AWST18SU1308) version.
What type of compressor does the GLZS4BA1810 use?
Goodman's GLZS4B spec sheet lists a single-stage rotary compressor for the 1.5 ton GLZS4BA1810.
What filter size does the AWST18SU13 take?
The small-chassis AWST uses a 14" x 18" x 1" filter in its built-in rack. A filter is included from the factory.
Is a wall access door available for the AWST18SU13?
Yes. Goodman lists the WAD-1 wall access door as an accessory for AWST 18 and 24 models.
GLZS5B Technical Specifications
Warranty Certificate
AWST Technical Specifications "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).
