Bosch CL036‑1VTC‑LRT‑PUA 3 Ton CL Series Vertical Water‑Source Heat Pump – Right‑Hand Water Return

The Bosch CL036‑1VTC‑LRT‑PUA is a commercial-grade 3 Ton vertical water-source heat pump engineered to deliver high-efficiency heating and cooling with minimal energy consumption and maximum serviceability. Built to Bosch’s rigorous standards, this unit is part of the next-generation CL Series, designed for water-loop and geothermal HVAC systems where reliability, quiet performance, and low environmental impact are mission-critical.

This model features right-hand water loop connections, making it the perfect solution for installations that require precise piping configurations. Its compact vertical cabinet (21.5″ wide × 26″ deep × 44.3″ high) fits comfortably in tight mechanical rooms and retrofit environments without compromising performance.

The CL036-1VTC-LRT-PUA operates using R‑454B refrigerant, a next-generation low-GWP alternative to R-410A. This not only ensures long-term compliance with the AIM Act and other climate-focused regulations, but also contributes to reducing your system’s environmental footprint without sacrificing capacity or efficiency. It’s the smart solution for buildings focused on sustainability and future-proof system design.

This 3 Ton model includes a slide-out ECM blower—available in constant torque or constant airflow—paired with a swing-out electrical box, offering unmatched service access. Maintenance is faster, safer, and more efficient, reducing long-term labor costs and downtime. Bosch’s integrated water coil freeze protection system adds peace of mind during cold weather or variable load conditions in water-loop applications.

The cabinet is constructed from galvanized steel and internally insulated to reduce noise, vibration, and thermal loss. An optimized blower wheel design enhances airflow while minimizing discharge noise, making the unit ideal for installation in sound-sensitive spaces such as offices, schools, and multi-family buildings.

Whether you’re designing a new energy-efficient structure or upgrading outdated HVAC equipment, the Bosch CL036-1VTC-LRT-PUA offers a future-ready solution that balances engineering excellence with eco-conscious responsibility.

• Capacity: 3 Ton (~36 kBtu/h)

• Refrigerant: R‑454B (A2L, low-GWP ~466)

• Compressor: Single-stage rotary

• Blower: ECM constant-torque or constant-airflow; vertical units include slide-out blower

• Service Access: Swing-out electrical box simplifies servicing

• Sound Attenuation: Vibration-isolating cabin with noise-optimized blower wheel

• Freeze Protection: Water coil freeze prevention included

• Cabinet Flexibility: Field-configurable discharge; vertical cabinet standard face