3 Ton Goodman 15.2 SEER2 R32 Heat Pump System GLZS5BA3610, AMST42CU1300
This is the higher-efficiency 3 ton option in Goodman's GLZS5B R-32 line. It pairs the GLZS5BA3610 outdoor heat pump with the larger AMST42CU1300 air handler for a 15.2 SEER2 AHRI rating (AHRI #218222710). The upsized indoor coil and 10" x 8" ECM blower push rated airflow to 1,260 CFM. The system delivers about 35,400 BTU/h of cooling at 95°F and 35,000 BTU/h of heating at 47°F. It's made for homeowners who want the most efficiency and comfort from a 3 ton system and have room for a 21" cabinet.
Is a 3 Ton Heat Pump System the Right Size?
Three tons commonly serves larger single-family homes with open floor plans. This match is best when the home's load calls for 3 tons and the air handler location can accommodate the 21" wide C cabinet.
Pairing a 3 ton outdoor unit with a 3.5 ton air handler coil is a manufacturer-rated combination that improves efficiency and moisture removal. Duct systems should be able to handle about 1,260 CFM. Insulation, glass area, and climate will still drive the final sizing decision.
Ideal for: Three- to four-bedroom homes, two-story homes with open layouts, and efficiency-minded replacements where a 21" air handler fits.
Need more capacity? Step up to the 3.5 Ton Goodman 15.2 SEER2 R32 Heat Pump System GLZS5BA4210, AMST42CU1300, which uses the same air handler with a larger outdoor unit.
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 | GLZS5BA3610 — 3 Ton R-32 Heat Pump |
|---|---|
| Indoor Air Handler | AMST42CU1300 Multi-Position ECM Air Handler (C Cabinet) |
| Application | Residential Split System Heat Pump (Heating & Cooling) |
| Refrigerant | R-32 |
| Compressor | Single-Stage Scroll Compressor |
| Efficiency | 15.2 SEER2 — AHRI #218222710 |
| Electrical | 208/230V, Single Phase, 60 Hz Outdoor Unit |
| Air Handler Electrical | 208/240V, Single Phase, 60 Hz |
Upsizing the indoor section to the AMST42CU1300 is what lifts this 3 ton match to 15.2 SEER2. The air handler's 21" C cabinet houses a larger all-aluminum coil and a 10" x 8" blower wheel driven by a 3/4 HP ECM motor. Options include heat strips up to 19 kW, 7/8" x 3/8" line sets, 19.5" x 20" C-cabinet filters, and thermostats. See all heat pump split systems.
Heat Pump & Air Handler Features
GLZS5BA3610 Outdoor Heat Pump
- About 35,400 BTU/h cooling at 95°F (rated match)
- About 35,000 BTU/h heating at 47°F; 20,000 at 17°F
- High-efficiency scroll compressor
- SmartShift defrost technology
- Enhanced aluminum fin coil with 5 mm copper tubes
- 7/8" suction and 3/8" liquid connections
- 71.1 dB rated sound level
- Single-panel control access with room for accessories
- 500-hour salt-spray-approved powder paint
- 242 lb shipping weight
AMST42CU1300 Air Handler
- 1,260 CFM rated airflow in this match
- 3/4 HP multi-speed ECM blower, 10" x 8" wheel
- Larger 21" wide C cabinet, 53-7/16" tall
- Factory-installed TXV
- All-aluminum evaporator coil sized for 3.5 tons
- Factory R-32 refrigerant sensor
- Rigid SmartFrame cabinet construction
- DecaBDE-free thermoplastic drain pan
- Uses 19.5" x 20" C-cabinet filters
- Heat strips from 5 kW up to 19 kW breakered
Specifications & Manuals
Product documentation includes outdoor heat pump and air handler technical specifications, installation instructions, and Goodman warranty information to assist with equipment selection, installation, and service.
Frequently Asked Questions
Why does this 3 ton system use a 3.5 ton air handler?
Goodman rates the GLZS5BA3610 with the AMST42CU1300 as an AHRI-matched combination. The larger coil and higher airflow raise efficiency to 15.2 SEER2.
How much airflow does the AMST42CU1300 deliver with a 3 ton outdoor unit?
Goodman's performance data for this match is rated at 1,260 CFM. The ECM blower's speed tap is set during installation based on the AHRI rating.
What heat output can I expect at 17°F?
Goodman's heating data lists about 20,000 BTU/h at 17°F outdoors for this combination, versus about 35,000 BTU/h at 47°F.
Will a 21" C-cabinet air handler fit where my old unit was?
The AMST42CU1300 is 21" wide and about 53-7/16" tall. If your space only fits a 17.5" cabinet, consider the GLZS5BA3610 + AMST36BU1300 3 ton system instead.
Can the AMST42CU1300 be installed horizontally in an attic?
Yes. Goodman lists horizontal or vertical configuration. Airflow adjustment factors apply in horizontal and downflow orientations, per the spec sheet.
What sound level is the GLZS5BA3610 rated at?
Goodman lists the 3 ton outdoor unit at 71.1 decibels.
GLZS5B Technical Specifications
Goodman 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).
