Trane 3.5 Ton Heat Pump for Heating and Cooling
The Trane 3.5 Ton 14.3 SEER2 (≈14.3-15.2 SEER2) 42000 BTU Single-Stage Heat Pump 5TWR4042A1000 is an outdoor split system heat pump condenser designed for steady home heating and cooling. It is a practical choice for homeowners replacing an older 3.5 ton heat pump or upgrading a compatible central HVAC system with R-454B refrigerant and Trane performance.
This unit works best when it is properly matched with the right indoor coil or air handler, ductwork, airflow setup, thermostat, and electrical requirements. Green Leaf Air can help buyers confirm system compatibility and installation needs before purchase, giving homeowners more confidence than a basic equipment-only listing.
The Climatuff Scroll Compressor supports quiet operation, while the Spine Fin coil helps improve heat transfer for efficient performance. Galvanized-steel louvered panels help protect internal components, and the baked-on powder paint finish supports long-term outdoor durability.
Key Features of the Trane 5TWR4042A1000 Heat Pump
- All-aluminum Spine Fin coil for outdoor use and efficient heat transfer
- R-454B refrigerant for updated refrigerant compatibility
- 14.3 SEER2 (≈14.3-15.2 SEER2) efficiency when matched with compatible indoor equipment
- Galvanized-steel louvered panels for durability and internal component protection
- Baked-on powder paint finish for long-term cabinet protection
- Climatuff Scroll Compressor for quiet operation and steady performance
- Single-stage operation for straightforward heating and cooling performance
- 42000 BTU capacity for properly sized 3.5 ton heat pump replacement applications
- Efficient heating and air conditioning capabilities when professionally matched and installed
Green Leaf Air support for sizing, compatibility, installation planning, financing, and warranty guidance
Trane 5TWR4042A1000 Heat Pump Specifications
Heat Pump Specifications
| Specification | Details |
| Brand | Trane |
| Series | 14 Single-Stage Heat Pump |
| Model | 5TWR4042A1000 |
| Ton | 3.5 Ton |
| Fan Speed | Single Speed |
| Stage | Single Stage |
| Capacity | 42000 BTU |
| SEER2 Rating | 14.3 SEER2 (≈14.3-15.2 SEER2) |
| HSPF2 Rating | 7.8 HSPF2 |
| Minimum Circuity Ampacity | 24 Amp |
| Breaker Circuit Prot. Rtg. (Max) | 40 Amp |
| Voltage | 230/208 Volts |
| Phase | 1 |
| Frequency | 60 Hz |
| Dimension | 45” x 34” x 37” |
| Liquid Line Connection | 3/8” |
| Gas Line Connection | 7/8″ |


Alan (verified owner) –
Great performance and very easy to use.
Owen (verified owner) –
Keeps my home perfectly cool. Love it!
Hayden (verified owner) –
Keeps my home perfectly cool. Love it!
Julian (verified owner) –
Powerful cooling, and my bills are lower!
Nathaniel (verified owner) –
Perfect temperature control with handy app features.
Mateo (verified owner) –
Energy-efficient and super reliable. Highly recommend!
Camden (verified owner) –
Efficient, quiet, and great for any home.
Anthony (verified owner) –
Best home investment—temperature is always just right.
Jackson (verified owner) –
Powerful cooling, and my bills are lower!
Paul (verified owner) –
Best home investment—temperature is always just right.
Kayden (verified owner) –
Powerful cooling, and my bills are lower!
Ryder (verified owner) –
Quiet, effective, and easy to maintain.