Trane 1.5-2 Ton Multi-Speed Air Handler 5TEM4B02AC21S
The Trane 1.5-2 Ton 18,000-24,000 BTU Multi-Speed Air Handler 5TEM4B02AC21S is an indoor air handler built for compatible Trane split AC and heat pump systems. It is a practical choice for homeowners replacing an indoor air handler or matching a new Trane system with the right outdoor condenser or heat pump.
This Trane air handler supports 1.5 ton and 2 ton matched system applications. Its multi-speed ECM motor helps move conditioned air through the duct system, while the compact 18.5-inch cabinet can fit many closet, attic, alcove, basement, utility room, and crawlspace installations when the layout allows.
If you are comparing the Trane 5TEM4B02AC21S price, looking for a Trane 2 ton air handler, or replacing an older indoor unit, confirm the model, refrigerant match, cabinet size, line connections, heater kit compatibility, and installation position before ordering.
Features of Trane 1.5-2 Ton 18000-24000 BTU Multi-Speed Air Handler 5TEM4B02AC21S
- Supports 1.5-2 ton matched HVAC system applications.
- Designed for 18,000-24,000 BTU capacity range.
- Multi-speed ECM motor helps provide steady indoor airflow.
- 4-way convertible cabinet supports upflow, downflow, horizontal left, and horizontal right installation.
- Compatible with properly matched Trane air conditioners and heat pumps.
- R-454B compatibility for approved matched systems.
- TXV refrigerant control supports proper refrigerant flow.
- All-aluminum plate fin coil supports durable heat transfer.
- Painted metal cabinet with captured foil face insulation helps protect the indoor unit.
- No-rust polymer drain pan helps manage condensate.
- Low voltage pigtail connections support compatible HVAC control setup.
- Optional electric heater kits can be added when properly matched and installed.
- Compact 18.5-inch cabinet width helps with attic, closet, and replacement applications.
- Green Leaf Air can help review air handler compatibility before purchase.
Specifications of Trane 1.5-2 Ton Multi-Speed Air Handler 5TEM4B02AC21S
Air Handler Specifications
| Specification | Details |
|---|---|
| Brand | Trane |
| Series/Collection | 5TEM4 Series / M Series |
| Model Number | 5TEM4B02AC21S |
| Product Type | Multi-Speed Air Handler |
| Nominal Tons | 1.5-2 Ton |
| Capacity | 18,000-24,000 BTU |
| Refrigerant Control | TXV |
| Refrigerant Compatibility | R-454B |
| Blower Type | Direct Drive |
| Motor Type | Multi-Speed ECM |
| Indoor Coil | All-Aluminum Plate Fin Coil |
| Power Source | Electric |
| Horsepower | 1/3 HP |
| Configuration | 4-Way Convertible |
| Installation Positions | Upflow, Downflow, Horizontal Left, Horizontal Right |
| Optional Heat | Compatible electric heater kit required when electric heat is needed |
Air Handler Electrical Data
| Specification | Details |
| Voltage | 208/230 Volts |
| Phase | Single Phase |
| Frequency | 60 Hz |
| Amp | 2.6 A |
| Max CFM | 800 CFM |
Air Handler Dimensions and Connections
| Specification | Details |
| Height | 45-1/8 Inches |
| Width | 18-1/2 Inches |
| Depth | 21-1/8 Inches |
| Connection Size, Gas/Suction | 3/4 Inch |
| Connection Size, Liquid | 3/8 Inch |
Compatibility and Buying Note
The Trane 5TEM4B02AC21S is an indoor air handler only. It is not a complete HVAC system by itself. It must be matched with the correct outdoor AC condenser or heat pump, refrigerant line set, thermostat or control setup, ductwork, airflow settings, drain setup, and optional electric heater kit when electric heat is needed.
Some supplier listings and search results may show nearby suffixes such as 5TEM4B02AC21SA, T5TEM4B02AC21SA, or TEM4B0B24M21SAA. Before ordering, confirm the exact suffix, R-454B compatibility, cabinet width, line connections, and approved equipment match.
Why Buy This Trane 5TEM4B02AC21S from Green Leaf Air?
Buy the Trane 1.5-2 Ton 18,000-24,000 BTU Multi-Speed Air Handler 5TEM4B02AC21S from Green Leaf Air when you want the model number, tonnage range, BTU range, refrigerant compatibility, installation positions, line connections, and fit details clearly listed before purchase.
For buyers comparing a Trane 2 ton air handler, checking the 5TEM4B02AC21S cost, or replacing an older attic air handler or indoor unit, this page helps separate the air handler details from a full HVAC system package.
Green Leaf Air can help review system matching, heater kit needs, financing options, and installation planning before you order.


Edward (verified owner) –
Good service.
David (verified owner) –
Great value—cooling is fast and even.
Max (verified owner) –
Good quality.
Hayden (verified owner) –
Good Profuct and Services.
Samuel (verified owner) –
Reliable and keeps the whole house comfortable.
Edward (verified owner) –
Great value—cooling is fast and even.