3 Ton Goodman 15.2 SEER2 R-32 Two-Stage Heat Pump Package Unit GPHM53631
The Goodman GPHM53631 holds up well in winter, producing 22,000 BTUh of heat at 17°F, a big jump over the 2.5 ton's 16,400. It is a 3 ton, two-stage packaged heat pump that delivers 36,000 BTUh of total cooling at 15.2 SEER2 and 35,400 BTUh of heating at 47°F (3.60 COP), with a 6.8 HSPF2 rating. A 3/4 HP 5-speed ECM blower moves 1,200 CFM through the large-chassis cabinet. It is a strong all-electric choice for typical family homes in a wide range of climates. Compare sizes in our 3 ton heat pump package unit category.
Is a 3 Ton Two-Stage Heat Pump Package Unit the Right Size?
Three tons fits cooling loads of about 33,000 to 36,000 BTUh, the most common residential range. The GPHM53631 is a substantial step from the 2.5 ton. It moves to the large chassis, adds a 3/4 HP blower with 1,200 CFM, and gains 6,400 BTUh of cooling and 6,800 BTUh of heating at 47°F.
Its 22,000 BTUh output at 17°F means many homes in the Southeast and mid-South can rely on the compressor alone for most of the winter. Backup heat kits from 5 to 15 kW cover the coldest nights. A balance-point calculation shows how much backup heat you actually need.
Ideal for: Typical 3 ton all-electric homes and manufactured homes in the Southeast and moderate-winter regions, plus small offices and retail spaces.
Need more capacity? Step up to the 3.5 Ton Goodman Two-Stage Heat Pump Package Unit GPHM54231 for 41,000 BTUh of heating at 47°F.
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 | GPHM53631: 3 Ton Two-Stage Packaged Heat Pump |
|---|---|
| Cooling Capacity | 36,000 BTUh Total / 26,640 BTUh Sensible, 1,200 CFM |
| Heat Pump Heating | 35,400 BTUh @ 47°F (3.60 COP) / 22,000 BTUh @ 17°F (2.26 COP) |
| Efficiency | 15.2 SEER2 / 11.4 EER2 / 6.8 HSPF2 |
| Refrigerant | R-32, Factory Charged (144 oz.), TXV Indoor & Outdoor |
| Compressor | Two-Stage Scroll Compressor |
| Backup Electric Heat | Optional 5, 8, 10, or 15 kW Goodman Heat Kit (Sold Separately) |
| Electrical | 208/230V, Single Phase, 60 Hz; 22.8 MCA, 35 Amp Max Overcurrent (Without Heat Kit) |
The GPHM53631 uses the large chassis (47 x 51 inches, about 492 lb) with 16 x 18 inch supply and return openings, and fits the D14CRBPGCHMA roof curb shared by the 2–4 ton GPHM5 models. Backup heat options include the 8 kW, 10 kW, and 15 kW Goodman heat kits. Round horizontal ducts connect with the SQRPGH103 square to round adapter. Learn how efficiency is rated in our SEER2 guide.
Cooling & Heat Pump Heating Features
GPHM53631 Cooling Mode
- 36,000 BTUh total cooling at 15.2 SEER2
- Two-stage scroll compressor (18.37 RLA / 126 LRA)
- 3/4 HP, 5-speed ECM blower rated for 1,200 CFM
- 4-row, 6.20 sq ft evaporator coil
- 2-row, 19.05 sq ft condenser coil
- 144 oz. factory R-32 charge
- TXV metering
- Louvered condenser coil guard
- 76 dB sound rating
- AHRI Certified, UL Listed
GPHM53631 Heat Pump Heating Mode
- 35,400 BTUh at 47°F with a 3.60 COP
- 22,000 BTUh at 17°F with a 2.26 COP
- 6.8 HSPF2 seasonal heating efficiency
- Two-stage heating for even comfort
- Heat kits from 5 to 15 kW
- Downflow economizer GPJMED103 / horizontal economizer DHZECNJPGCHL
- Economizer wiring harness 0259L00411 required with economizers
- Large chassis with 16 x 18 inch duct openings
- Meets 2023 FBC hurricane requirements when anchored
- 10-year parts limited warranty with registration
Specifications & Manuals
Product documentation includes GPHM5 technical specifications with expanded cooling, heating, airflow, heat kit, and accessory data, installation instructions, a service manual, and Goodman warranty terms to assist with equipment selection, installation, and service.
Frequently Asked Questions
How does the 3 ton GPHM53631 compare with the 2.5 ton?
Cooling rises from 29,600 to 36,000 BTUh, heating at 47°F from 28,600 to 35,400 BTUh, and heating at 17°F from 16,400 to 22,000 BTUh. The unit moves to the large chassis with a 3/4 HP, 1,200 CFM blower. Electrical is 22.8 MCA with a 35 amp breaker.
How well does the 3 ton GPHM5 heat in cold weather?
Goodman rates it at 22,000 BTUh with a 2.26 COP at 17°F outdoors, and a 6.8 HSPF2 seasonal rating.
Which economizers fit the GPHM53631?
For large-chassis units, Goodman lists the GPJMED103 downflow economizer and the DHZECNJPGCHL horizontal economizer. The 0259L00411 wiring harness is required for economizer installation.
What are the duct openings and weight of the 3 ton GPHM5?
The large chassis has 16 x 18 inch supply and return openings, and Goodman lists the unit weight at 492 lb.
What is the largest heat kit for the GPHM53631?
Size 36 accepts up to the 15 kW HKTPD151. On a single-point connection, Goodman lists 103.96 MCA and a 110 amp maximum overcurrent device.
Does the 3 ton GPHM5 share a roof curb with other sizes?
Yes. The D14CRBPGCHMA roof curb fits the 2–4 ton GPHM5 models. The 5 ton uses its own 0221L00014 curb.
GPHM5 Technical SpecificationsGPHM5 Installation InstructionsGPHM5 Service ManualGoodman Warranty Certificate
