GPHH34831 is a 4 Ton Goodman GPHH3 R-32 packaged heat pump designed for ducted heating and cooling where an all-in-one outdoor cabinet makes sense (common in rooftop or slab applications). This model provides rated cooling up to 45,000 BTU/h and rated heating of 42,500 BTU/h @ 47°F, with an efficiency rating of 13.4 SEER2.
At-a-glance specifications
| Model number | GPHH34831 |
|---|---|
| Series | GPHH3 (Packaged Heat Pump) |
| Nominal size | 4 Ton |
| Cooling capacity (rated) | 45,000 BTU/h total • 34,650 BTU/h sensible |
| Efficiency ratings | 13.4 SEER2 • 10.6 EER2 • 6.7 HSPF2 |
| Heating capacity (rated) | 42,500 BTU/h @ 47°F (COP 3.66) • 22,000 BTU/h @ 17°F (COP 2.2) |
| Compressor | Scroll, Single-stage (RLA 19.39, LRA 127.7) |
| Indoor blower | 1500 nominal CFM • ECM multi-speed (5 speeds) • 3/4 HP • 5.4 FLA • wheel 10 x 8" |
| Outdoor fan | 22" blade • 1/4 HP • 1.4 FLA |
| Sound rating | 80 dB |
| Electrical | 208-230 V, 1-phase, 60 Hz • MCA 31.04 A • Max overcurrent protection 50 A |
| Refrigerant charge | 141 oz (8.81 lb / 4.00 kg) |
| Cabinet / footprint | 66" W × 34" D × 35" H (overall B height); cabinet height A = 32.5" • Chassis size: Medium • Duct openings: Supply 14" × 14" • Return 14" × 24" |
| Minimum clearances | Per the spec-sheet diagram: maintain 36" clearance on the air-inlet/service sides and 10" to an adjacent wall on the opposite side; follow local code and installation instructions. |
| Factory charge | Shipped fully charged with R-32 (ready for start-up after installation and checkout) |
| Optional heat | Electric heat kits are available as field-installed options (sold separately; sizing and electrical requirements depend on kit) |
Model number decoding (so you know exactly what you're buying)
- G = Goodman brand
- P = Packaged unit (all-in-one outdoor cabinet)
- H = Heat pump
- H = Horizontal discharge configuration
- 3 = 13.4 SEER2 series
- 48 = 4 Ton
- 31 = 208/230V, 1-Phase, 60Hz
- Refrigerant = R-32 (A2L)
Performance details
- Cooling: 45,000 BTU/h total, 34,650 BTU/h sensible; 13.4 SEER2; 10.6 EER2.
- Heating: 42,500 BTU/h @ 47°F (COP 3.66); 22,000 BTU/h @ 17°F (COP 2.2); 6.7 HSPF2.
- Staging: Single-stage. (Two-stage models can run at a lower stage in mild conditions for steadier comfort.)
Air delivery & comfort
- Indoor blower: Multi-speed ECM with 5 speeds; 1500 nominal CFM; blower wheel 10 x 8"; motor 3/4 HP.
- Duct connections: Supply 14" × 14" • Return 14" × 24" (check transitions/curb requirements).
Refrigerant, coils, and serviceability
- Refrigerant: R-32, factory charge 141 oz (8.81 lb / 4.00 kg).
- Coils: All-aluminum evaporator coil; copper tube/aluminum fin condenser coil.
- Drain connection: 3/4" NPT.
Metering devices: Indoor/evaporator metering is Piston. Outdoor/condenser metering is Piston. A TXV (thermostatic expansion valve) is a modulating metering device; a piston (fixed orifice) is a fixed metering device—your installer/service technician will want to know this for diagnostics and part selection.
Electrical requirements (verify the nameplate before installation)
- Power: 208-230 V, 1-phase, 60 Hz.
- MCA / breaker sizing: Minimum circuit ampacity 31.04 A; max overcurrent protection 50 A (time-delay fuses or HACR-type breakers per spec sheet).
Physical dimensions, clearances & sound
- Cabinet size: 66" W × 34" D × 35" H (overall B height); cabinet height A = 32.5" (chassis: Medium).
- Operating/shipping weight: 415 lb operating / 425 lb shipping.
- Sound rating: 80 dB.
- Clearances: Per the spec-sheet diagram: maintain 36" clearance on the air-inlet/service sides and 10" to an adjacent wall on the opposite side; follow local code and installation instructions.
Standard features
- Energy-efficient scroll compressor
- Multi-speed ECM indoor blower motor (5 speeds)
- Quiet horizontal discharge
- All-aluminum evaporator coil
- Copper tube/aluminum fin condenser coil
- Totally enclosed, permanently lubricated condenser fan motor
- Fully charged system
- Electric heat kit available as a field-installed option
- AHRI certified; UL listed
Cabinet & durability features
- Heavy-gauge galvanized-steel cabinet with architectural gray powder-paint finish
- Aluminum foil-facing internal insulation reinforced with fiberglass scrim
- Fully insulated blower compartment with convenient access panels
- Meets cabinet air leakage requirements when tested in accordance with ASHRAE standard 193
- Louvered condenser coil protection
- One footprint for all tonnages
- When properly anchored, meets the 2023 Florida Building Code unit integrity requirements for hurricane-type winds (anchor bracket kits available)
Commonly used accessories (sold separately)
- Downflow Economizer (use w/ PCCP roof curb): DDNECNJPCHHA
- Downflow Plenum Kit (use w/ PCCP roof curb): PCP101-103
- Downflow Plenum Kit (R-8) (use w/ PCCP roof curb): PCP101-103 R8
- Elbow Flashing w/ R-8 Liner: PCEF101-103
- Economizer Wiring Harness: 0259G00213
- External Horizontal Filter Rack: DPHFRA
- Horizontal Economizer: DHZECNJPGCHM
- Inline Fuse Kit: INFKPKG01
- Isolation Relay Kit (req'd with Economizer): IRKT-01
- Manual Damper: PCMD101-103
- Manual Damper - Horizontal: GPHMD101-103
- Motorized Damper: PCMDM101-103
- Outdoor Thermostat Kit w/ Lockout Stat: OT18-60A
- Roof Curb: PCCP101-103
- Square to Round Downflow (use w/ PCCP roof curb): SQRPC101 (small) / SQRPC102-103 (med/large)
- Square to Round Horizontal: SQRPCH101 (small) / SQRPCH102-103 (med/large)
Common questions (answered)
- Is this an all-in-one unit or split system? This is a packaged heat pump: the compressor, outdoor coil, indoor coil, and blower are all in one cabinet. It connects to your ductwork through the listed supply/return openings.
- What does “horizontal discharge” mean? The condenser fan discharges air out the side of the unit (not straight up), which can matter for curb/roof installations, clearances, and sound/airflow planning.
- What electrical service is required? 208-230 V, 1-phase, 60 Hz. Use a dedicated circuit sized to at least the MCA (31.04 A) with max overcurrent protection of 50 A. Always follow the unit nameplate and local code.
- Does it include electric auxiliary heat? The heat pump section is factory-installed; electric heat is optional via a field-installed heat kit (sold separately).
- What refrigerant does it use? R-32. R-32 is commonly classified as A2L (lower toxicity, mildly flammable), so installation and service must follow current safety codes and manufacturer instructions.
- Will it fit my existing curb/duct? Compare the cabinet dimensions (66" W × 34" D × 35" H (overall B height); cabinet height A = 32.5") and duct openings (Supply 14" × 14" • Return 14" × 24") to your curb/transition. Accessories like roof curbs and square-to-round adapters are available (see list below).
Documentation & sources
- Goodman series page: https://www.goodmanmfg.com/products/packaged-units/heat-pumps/gphh3-r-32
- Goodman dealer spec sheet (PDF): https://www.goodmanmfg.com/docs/librariesprovider6/default-document-library/ss-gphh3-r32.pdf?view=true
- A2L safety classification overview (ASHRAE): https://www.ashrae.org/file%20library/technical%20resources/bookstore/factsheet_ashrae_english_november2022.pdf
- Google guidance used for this description: https://developers.google.com/search/docs/fundamentals/creating-helpful-content
Reminder: HVAC equipment should be selected using proper load calculations and installed/commissioned by qualified professionals. Capacities and sound levels are rated values and can vary with conditions and installation details.
