Trane 5TWR4042A1000A 3.5 Ton 42,000 BTU 14 SEER2 Heat Pump Outdoor Unit - R454B

Trane 5TWR4042A1000A – 3.5 Ton 42,000 BTU 14 SEER2 Single-Stage Split System Heat Pump

Deliver dependable year-round comfort with the Trane 5TWR4042A1000A , a 3.5-ton single-stage split system heat pump engineered for efficient residential heating and cooling performance. As part of Trane’s 5TWR40 series heat pump platform , this R-454B system integrates a Climatuff® scroll compressor, Spine Fin™ all-aluminum outdoor coil, and durable weather-resistant cabinet construction to provide reliable operation and long-term comfort.

Single-Stage Climatuff® Scroll Compressor Performance
The 5TWR4042A1000A utilizes a Climatuff® single-stage scroll compressor (1 – 1 configuration) designed for dependable heating and cooling operation. The compressor incorporates internal over-temperature and pressure protection along with a centrifugal oil pump that helps reduce vibration and support consistent long-term system performance.

3.5 Ton Heating & Cooling Capacity Platform
Model nomenclature identifies this system as a 3.5-ton heat pump (42 = 42,000 BTU nominal capacity) operating on 208/230V, 1-phase, 60 Hz electrical service . The unit is certified under the AHRI Air-Source Unitary Air-Conditioner Equipment Certification Program (Standard 210/240) and rated for sound performance according to AHRI Standard 270 .

Direct-Drive Outdoor Fan System
The outdoor fan assembly features a 27.5-inch propeller blade driven by a direct-drive single-speed motor (1/3 HP) operating at approximately 850 RPM . The fan produces approximately 4,171 CFM airflow at 0.0 in. w.g. , supporting efficient condenser heat rejection and stable system performance.

Spine Fin™ All-Aluminum Outdoor Coil
The condenser coil incorporates Trane’s patented Spine Fin™ all-aluminum coil design with 2 rows at 24 fins per inch and 30.8 sq. ft. of face area . This coil construction enhances heat transfer efficiency while providing corrosion resistance and long-term durability. Louvered cabinet panels protect the coil on all four sides while maintaining efficient airflow.

R-454B Refrigerant & Charging Specifications
The 5TWR4042A1000A utilizes R-454B refrigerant with an approximate factory charge of 7 lb, 14 oz . Standard refrigerant connections include 7/8" O.D. gas and 5/16" O.D. liquid lines , and the system uses an expansion valve refrigerant control with a 10°F subcooling charging specification for proper system setup and efficient operation.

Quiet Operation with AHRI-Rated Sound Performance
The 5TWR4042A heat pump carries a 72 dB(A) A-weighted sound power level rating under AHRI Standard 270 testing conditions, supporting dependable heating and cooling performance with controlled outdoor sound levels appropriate for residential environments.

Durable Cabinet Construction for Outdoor Installation
The cabinet is constructed from heavy-gauge galvanized steel with a weather-resistant powder-coated finish . Exterior panels undergo 1,000 hours of salt-spray testing , helping ensure corrosion resistance and durability in demanding outdoor installation environments.

Operating Range & Low Ambient Cooling Options
As manufactured, the system provides cooling operation down to 55°F outdoor ambient . Optional evaporator defrost controls permit cooling operation to 40°F , and with TXV configuration the system can operate down to 30°F . Installation of the BAYLOAM107A low ambient kit allows cooling operation down to 20°F outdoor ambient .

Engineered for Reliable Residential Heating and Cooling
Ideal for medium to larger homes and residential HVAC systems, the Trane 5TWR4042A1000A heat pump delivers dependable 3.5-ton single-stage heating and cooling performance , durable Spine Fin™ coil construction, and efficient R-454B refrigerant operation in a robust outdoor heat pump platform designed for consistent comfort and long-term reliability.