3 Ton Goodman 15.2 SEER2 R32 A/C System GLXS5BA3610, AMST36CU1300
This package reaches 15.2 SEER2 at 3 tons without a tall air handler. It pairs the 36,000 BTU/h GLXS5BA3610 high-efficiency condenser with the 49"-tall AMST36CU1300 (AHRI #215380653). That's a big plus for homeowners replacing the most common residential size in a closet, attic or garage where headroom is limited. It has a scroll compressor, a 71 dBA sound rating and R-32 refrigerant, and it's cooling only with support for optional field-installed electric heat.
Is a 3 Ton Air Conditioning System the Right Size?
Three tons (36,000 BTU/h) fits many mid-size homes. As a loose benchmark, that's often around 1,500–1,800 sq. ft. It's also the size many builders originally installed, so replacing like-for-like is common. Still, it's worth confirming with a load calculation that 3 tons remains right for the home today.
Renovations change the math. New windows, added insulation or a sealed attic can lower the load, while a room addition or converted garage can raise it. Duct condition matters just as much. A high-efficiency 3 ton system on restrictive ducts won't deliver its rated performance.
Ideal for: Mid-size 3–4 bedroom homes, original 3 ton replacements and installs where closet or attic height is limited.
Need more capacity? Step up to the 3.5 Ton Goodman 15.2 SEER2 R32 A/C System GLXS5BA4210, AMST42CU1300 for larger homes or heavier afternoon sun.
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 | GLXS5BA3610 — 3 Ton High-Efficiency R32 Split System Air Conditioner |
|---|---|
| Indoor Air Handler | AMST36CU1300 Multi-Position ECM Air Handler (C Cabinet, 21" Wide) |
| Application | High-Efficiency Cooling-Only Split System (Electric Heat Kit Optional) |
| Refrigerant | R-32 |
| Compressor | Single-Stage High-Efficiency Scroll Compressor |
| Metering Device | Factory-Installed Internal Thermal Expansion Valve (TXV) |
| Electrical | 208/230V, Single Phase, 60 Hz Condensing Unit — 17.8 MCA / 30A Max Overcurrent |
| Air Handler Electrical | 208/240V, Single Phase — 7.1 MCA / 15A Max Overcurrent (No Heat Kit) |
The GLXS5BA3610 condenser shares the 35-1/2" x 35-1/2" x 39-1/2" cabinet of the 2.5 ton GLXS5. It weighs 191 lbs, carries 88 oz. of factory R-32 charge, and moves to 7/8" suction line and valve sizes. The AMST36CU1300 is 49" tall in the 21" C cabinet, compared with 53-7/16" for the AMST42CU1300 in the 3 ton GLXS4 15.2 SEER2 system. For hurricane-zone installs, anchor the condenser with pads and tie-downs rated for your site.
Condensing Unit & Air Handler Features
GLXS5BA3610 Outdoor Condensing Unit
- 36,000 BTU/h nominal cooling capacity
- High-efficiency single-stage scroll compressor
- 71 dBA rated sound level
- 1/6 HP PSC condenser fan motor
- 88 oz. factory R-32 charge for 15 ft. of tubing
- 3/8" liquid and 7/8" suction sweat service valves
- Factory-installed filter drier
- Enclosed contactor and high-pressure switch
- Steel louver coil guard and wire fan discharge grille
- Compatible with CSR-U-1 and CSR-U-2 hard-start kits
AMST36CU1300 Multi-Position Air Handler
- 49"-tall, 21" C cabinet with 10" x 8" blower wheel
- ¾ HP multi-speed ECM motor
- Internal factory-installed TXV
- All-aluminum evaporator coil designed for R-32
- 21-1/8" depth for easier attic access
- Upflow or horizontal, with a DFKE-02 downflow kit available
- Cabinet air leakage under 2.0% at 1.0" H₂O (ASHRAE 193)
- Tool-less 19.5" x 20" filter access
- Accepts HKTS electric heat kits from 3 kW up to 19 kW
- Factory-installed R-32 sensor, UL 60335-2-40 compliant
Specifications & Manuals
Documentation covers GLXS5BA3610 electrical, line-size and accessory data, AMST36CU1300 C-cabinet dimensions, airflow by speed tap and full installation procedures.
Frequently Asked Questions
What's the difference between this and the 3 ton GLXS4 15.2 SEER2 system?
Both are rated 15.2 SEER2. The GLXS4 version reaches it with the taller 53-7/16" AMST42CU1300, while this GLXS5 system does it with the 49" AMST36CU1300, saving about 4-7/16" of height.
Why does the 3 ton GLXS5 share a cabinet with the 2.5 ton?
Goodman builds both the GLXS5BA3010 and GLXS5BA3610 on the same 35-1/2" x 35-1/2" x 39-1/2" chassis. The 3 ton differs in charge (88 oz.), suction size (7/8") and electrical data.
Which hard-start kits fit the GLXS5BA3610?
Goodman's accessory chart lists both the CSR-U-1 and CSR-U-2 hard-start kits for the GLXS5BA3610.
How many anchor brackets does the GLXS5BA3610 need?
Goodman's ABK-20 kit contains 20 brackets, and four are needed to anchor one unit to its pad. Proper anchoring is required to meet the 2023 Florida Building Code hurricane-wind requirements.
What does the FSK01A freeze protection kit do?
It installs on the indoor coil and helps protect against the evaporator icing up, for example during low-airflow conditions. Goodman lists it as an accessory for the GLXS5BA3610.
What if my 3 ton line set is longer than 25 feet?
The listed 3/8" liquid and 7/8" suction sizes are for 25 ft. line sets. For longer runs, follow the installation instructions and Goodman's Long Line Set Applications guide, and adjust the charge using the final charge adjustment procedure.
GLXS5 Technical Specifications
GLXS Installation Manual
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).
