Trane 5TWR4018A1000A 1.5 Ton 18,000 BTU 14 SEER2 Heat Pump Outdoor Unit - R454B

Trane 5TWR4018A1000A – 18,000 BTU 1.5 Ton 14 SEER2 Single-Stage Split System Heat Pump

Deliver dependable year-round comfort with the Trane 5TWR4018A1000A , a 1.5-ton single-stage split system heat pump engineered for reliable residential heating and cooling performance. As part of Trane’s 5TWR40 series platform , this R-454B system combines a Climatuff® scroll compressor, Spine Fin™ all-aluminum outdoor coil, and durable weather-resistant cabinet construction designed for long-term outdoor durability and consistent comfort.

Single-Stage Climatuff® Scroll Compressor Performance
The 5TWR4018A1000A features a Climatuff® single-stage scroll compressor (1 – 1 configuration) designed for dependable heating and cooling operation. The compressor includes internal over-temperature and pressure protection along with a centrifugal oil pump that helps reduce vibration while maintaining reliable long-term system performance.

1.5 Ton Heating & Cooling Capacity Platform
Model nomenclature identifies this system as a 1.5-ton heat pump (18 = 18,000 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 according to AHRI Standard 270 for sound performance .

Direct-Drive Outdoor Fan System
The outdoor fan assembly uses a 23-inch propeller blade paired with a direct-drive single-speed motor (1/8 HP) operating at approximately 850 RPM . The fan produces approximately 2,980 CFM airflow at 0.0 in. w.g. , supporting efficient condenser airflow and stable system operation during heating and cooling cycles.

Spine Fin™ All-Aluminum Outdoor Coil
The condenser coil incorporates Trane’s patented Spine Fin™ all-aluminum coil design with 1 row at 24 fins per inch and 18.75 sq. ft. of face area . This design enhances heat transfer efficiency while offering corrosion resistance and durability. The coil is protected on all four sides by louvered cabinet panels that maintain airflow while shielding the coil from environmental exposure.

R-454B Refrigerant & Charging Specifications
The 5TWR4018A1000A utilizes R-454B refrigerant with an approximate factory charge of 4 lb, 12 oz . Standard refrigerant connections include 3/4" O.D. gas and 5/16" O.D. liquid lines , and the system uses an expansion valve refrigerant control with a 9°F subcooling charging specification for proper system setup and operation.

Quiet Operation with AHRI-Rated Sound Performance
The 5TWR4018A heat pump carries a 71 dB(A) A-weighted sound power rating under AHRI Standard 270 testing conditions, providing dependable heating and cooling performance with controlled outdoor sound levels suitable 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 are tested to withstand 1,000 hours of salt-spray exposure , ensuring corrosion resistance and long-term durability in demanding outdoor installations.

Operating Range & Low Ambient Cooling Options
As manufactured, the system provides cooling operation down to 55°F outdoor ambient . Optional accessories such as evaporator defrost controls and low ambient kits can extend cooling operation to 40°F, 30°F with TXV, or as low as 20°F with the BAYLOAM107A low ambient kit installed.

Engineered for Reliable Residential Heating and Cooling
Ideal for smaller homes and light residential heating and cooling loads, the Trane 5TWR4018A1000A heat pump delivers dependable 1.5-ton single-stage performance , durable Spine Fin™ coil construction, and efficient R-454B refrigerant operation in a compact outdoor heat pump platform designed for consistent comfort and long-term reliability.