4 Ton Goodman 14 SEER2 R32 A/C System GLXS4BA4810, AMST48CU1300
Built for large homes with big cooling demands, this Goodman package combines the 48,000 BTU/h GLXS4BA4810 R-32 condenser with the AMST48CU1300 air handler. The pair is certified under AHRI #214860027 at 14 SEER2. It's a strong value for homeowners with multi-bedroom, two-story or high-ceiling homes and for contractors quoting larger replacements. It has a scroll compressor, an internal TXV and a 10" wide ECM blower wheel for high-airflow duct systems. It's cooling only, with support for field-installed Goodman electric heat strips.
Is a 4 Ton Air Conditioning System the Right Size?
A 4 ton system provides 48,000 BTU/h of nominal cooling and is typically considered for larger homes. That's often in the neighborhood of 2,100–2,500 sq. ft. as a loose benchmark. Larger homes vary more in load than small ones, so a room-by-room calculation matters even more here.
Look at the whole picture: two-story heat stratification, vaulted great rooms, walls of glass, pool-facing lanais, attic ductwork and the number of occupants. Return air sizing matters just as much. A 4 ton system needs enough return and supply duct capacity to move its airflow quietly, and undersized ducts are a common problem in 4 ton replacements.
Ideal for: Large single-family homes, two-story homes with 4+ bedrooms, homes with vaulted ceilings and properties with heavy solar gain.
Need more capacity? Step up to the 5 Ton Goodman R32 A/C System GLXS4BA6010, AMST60DU1300, the largest size in the GLXS4B series.
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 | GLXS4BA4810 — 4 Ton R32 Split System Air Conditioner |
|---|---|
| Indoor Air Handler | AMST48CU1300 Multi-Position ECM Air Handler (C Cabinet, 21" Wide) |
| Application | Cooling-Only Central Air Split System (Electric Heat Kit Optional) |
| Refrigerant | R-32 |
| Compressor | Single-Stage Scroll Compressor with Advanced Copeland® Technology |
| Metering Device | Factory-Installed Internal Thermal Expansion Valve (TXV) |
| Electrical | 208/230V, Single Phase, 60 Hz Condensing Unit — 25.2 MCA / 40A Max Overcurrent |
| Air Handler Electrical | 208/240V, Single Phase — 7.1 MCA / 15A Max Overcurrent (No Heat Kit) |
The GLXS4BA4810 shares its 35-1/2" x 35-1/2" x 35-3/4" cabinet with the 3.5 ton model. It weighs 211 lbs and carries a 91 oz. factory R-32 charge. The AMST48CU1300 is the tallest C-cabinet model at 58". It uses a 10" x 10" blower wheel and a 7/8" coil suction connection for the higher airflow a 4 ton system needs. The AMST48CU1300 air handler and the GLXS4BA4810 condenser are each available individually when only one side needs replacing.
Condensing Unit & Air Handler Features
GLXS4BA4810 Outdoor Condensing Unit
- 48,000 BTU/h nominal cooling capacity
- Single-stage scroll compressor with Advanced Copeland® Technology
- 73 dBA rated sound level
- High-density foam compressor treatment
- 91 oz. factory R-32 charge for 15 ft. of tubing
- 3/8" liquid and 1-1/8" suction line sizes for 25 ft. line sets
- Enclosed contactor, ground lug and high-pressure switch
- Copper tube / enhanced aluminum fin 5 mm coil
- Removable grille-style top compliant with UL 60335-2-40
- 10-year parts limited warranty with online registration within 60 days
AMST48CU1300 Multi-Position Air Handler
- 48,000 BTU/h nominal capacity
- 10" x 10" blower wheel driven by a ¾ HP multi-speed ECM motor
- Internal factory-installed TXV
- All-aluminum evaporator coil with a 7/8" suction connection
- 21" C cabinet with 21-1/8" depth for attic access
- Upflow or horizontal, with a DFKE-03 downflow kit available
- Cabinet air leakage under 1.4% at 0.5" H₂O (ASHRAE 193)
- Galvanized, leather grain-embossed cabinet
- Tool-less 19.5" x 20" filter access
- Supports HKTS electric heat kits from 3 kW up to 19 kW
Specifications & Manuals
Documentation provides GLXS4BA4810 electrical and charge data, AMST48CU1300 airflow by static pressure, heat kit MCA/MOP tables, dimensions and installation instructions.
Frequently Asked Questions
How do I know if my home needs a 4 ton AC?
A Manual J load calculation near 48,000 BTU/h is the clearest sign. That's common in large or two-story homes with high ceilings, lots of glass or heavy sun. The duct system should also be sized to handle 4 ton airflow.
What's the step up from the 3.5 ton to the 4 ton GLXS4BA4810?
The condenser cabinet is the same size, but the GLXS4BA4810 adds 6,000 BTU/h, 8 oz. of factory charge and a higher electrical draw. Indoors, the AMST48CU1300 has a taller 58" cabinet and a wider 10" blower wheel.
How much does the GLXS4BA4810 condenser weigh?
Goodman lists an equipment weight of 211 lbs and a shipping weight of 226 lbs. Plan for two people or a hand truck when setting it on the pad.
What is the largest electric heat kit for the AMST48CU1300?
Goodman's heat kit data lists up to the HKTSD19 (19.2 kW at 240V) for the AMST48CU1300, along with smaller 3–15 kW options.
What does the internal TXV in the AMST48CU1300 do?
The thermal expansion valve meters refrigerant into the evaporator coil based on load, which helps keep superheat consistent across changing conditions. It comes factory installed, so there's no separate metering device to add.
What thermostat works with this 4 ton cooling-only system?
A standard 24V single-stage cooling thermostat works. If you add an electric heat kit, choose a model with an electric heat stage. Browse compatible options in our thermostats category.
GLXS4 Technical Specifications
GLXS Installation Manual
AMST Technical Specifications
AMST Installation Manual"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).
