4 Ton Goodman 15.2 SEER2 R-32 100K BTU Two-Stage Gas Package Unit GPGM54810031
The Goodman GPGM54810031 is the largest GPGM5 that shares the standard 2–4 ton roof curb and fits a standard-size pickup truck, making it a convenient high-capacity choice. Its two-stage scroll compressor delivers 46,000 BTUh of total cooling at 15.2 SEER2. The two-stage, five-burner furnace fires at 75,000 or 100,000 BTU input for up to 81,000 BTU of heat at 81% AFUE. A 3/4 HP variable-speed ECM blower, factory-charged R-32, and Low NOx compliance make it a strong fit for large homes and light commercial buildings. See all 4 ton gas package units.
Is a 4 Ton Two-Stage Gas Package Unit the Right Size?
A 4 ton unit fits cooling loads of about 44,000 to 48,000 BTUh, which is typical of larger floor plans, high ceilings, extensive glass, or commercial spaces with equipment heat. Compared with the 3.5 ton, the GPGM54810031 adds 4,500 BTUh of total cooling and 50 CFM of airflow, with the same 100K/75K BTU furnace. Choose it when cooling, rather than heating, is the reason to size up.
The unit's 1,275 CFM nominal airflow calls for adequately sized supply and return ducts. Check returns in particular before replacing a smaller unit. Two-stage cooling helps larger homes avoid hot and cold spots by running longer, gentler low-stage cycles most of the season.
Ideal for: Large single-family homes, open-concept floor plans, and light commercial spaces such as offices, clinics, and shops with 4 ton cooling loads.
Need more capacity? Step up to the 5 Ton Goodman Two-Stage Gas Package Unit GPGM56014031, the largest GPGM5.
Recommended applications are general guidelines only. Actual system requirements depend on insulation, ductwork, climate, window area, occupancy, and a proper load calculation. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Package Unit | GPGM54810031: 4 Ton Two-Stage Gas/Electric Package Unit |
|---|---|
| Cooling Capacity | 46,000 BTUh Total / 32,600 BTUh Sensible, 1,275 CFM |
| Gas Heating | 100,000 / 75,000 BTU Input (Two-Stage); 81,000 / 60,750 BTU Output; 81% AFUE |
| Efficiency | 15.2 SEER2 / 11.5 EER2 |
| Refrigerant | R-32, Factory Charged (82 oz.), TXV Metering |
| Compressor | Two-Stage Scroll Compressor |
| Airflow Configuration | Convertible Horizontal or Downflow |
| Electrical | 208/230V, Single Phase, 60 Hz; 35.8 MCA, 50 Amp Max Overcurrent |
The GPGM54810031 ships at about 410 lb in the large chassis, with 16 x 18 inch duct openings. Fresh-air options include the PGMDMD103 downflow and PGMDMH103 horizontal motorized dampers. Use the SQRPGH103 square to round adapter for round horizontal ducts, and the LPM-08 kit for propane. If you are replacing an R-410A or R-22 package unit, see our refrigerant transition guide.
Cooling & Gas Heating Features
GPGM54810031 Air Conditioning Section
- 46,000 BTUh total cooling, 32,600 BTUh sensible
- Two-stage scroll compressor (23 RLA / 128.4 LRA)
- 15.2 SEER2 / 11.5 EER2
- 3/4 HP variable-speed ECM blower, 1,275 CFM
- 2-row, 14.4 sq ft condenser coil
- All-aluminum evaporator coil, 5.7 sq ft
- TXV metering, 82 oz. R-32 charge
- Loss-of-charge and high-pressure switches
- 77 dB sound rating
- AHRI Certified, UL Listed
GPGM54810031 Gas Furnace Section
- 75,000 / 100,000 BTU two-stage input
- 60,750 / 81,000 BTU output at 81% AFUE
- Five-burner design with power-assisted combustion
- T-140 aluminized steel tubular heat exchanger
- 35–65°F temperature rise range
- Self-diagnosing direct spark ignition control
- Low NOx compliant (40 ng/J)
- Largest GPGM5 on the shared 2–4 ton roof curb
- Fits in a standard-size pickup truck
- 99-year heat exchanger limited warranty with registration
Specifications & Manuals
Product documentation includes GPGM5 technical specifications with expanded cooling, airflow, dimensional, and accessory data, installation instructions, and Goodman warranty terms to assist with equipment selection, installation, and service.
Frequently Asked Questions
What does the 4 ton GPGM54810031 add over the 3.5 ton?
Total cooling rises from 41,500 to 46,000 BTUh and airflow from 1,225 to 1,275 CFM. The 100K/75K BTU furnace is the same. Electrical increases to 35.8 MCA with a 50 amp breaker.
Is the 4 ton the largest GPGM5 that fits the standard roof curb?
Yes. The D14CRBPGCHMA roof curb fits the 2–4 ton GPGM5 models. The 5 ton uses a larger cabinet and its own 0221L00014 roof curb.
Which motorized dampers fit the GPGM54810031?
For large-chassis units, Goodman lists the PGMDMD103 downflow motorized damper and the PGMDMH103 horizontal motorized damper. Manual versions are PGMDD103 and PGMDH103.
How loud is the 4 ton GPGM5?
Goodman rates the GPGM54810031 at 77 dB.
What are the compressor amp ratings on the GPGM54810031?
The two-stage scroll compressor is rated at 23 RLA and 128.4 LRA. Always check the unit's rating plate for final electrical data.
Is an internal filter rack available for the 4 ton GPGM5?
Yes. Goodman lists the DHZIFRPGCHA internal horizontal filter rack and the DDNIFRPGA downflow internal filter rack (for installs without an economizer), as well as the DPHFRA external horizontal filter rack.
GPGM5 Technical Specifications