ES Series - Two Stage Compact
ES Series - Two Stage Compact
ES Series - Two Stage Compact
ES Series - Two Stage Compact

Water Source Heat Pump - Water-to-Air

ES Series - Two Stage Compact

One of the industry's most ultra-efficient units providing powerful performance.

  • Ultra Efficiency
  • 2 to 6 tons
  • Quiet Operation
  • Service Friendly


High Efficiency Bosch Water-to-air Heat Pumps

The Bosch ES 2-stage, water-to-air heat pumps offer high efficiency, value added features and dual capacity with standard features like a two speed scroll compressor and an ECM constant airflow fan motor. Features like this give you the flexibility, performance and quiet operation needed to exceed the expectations of your clients.

Quiet Operation

• Floating Compressor Base - Reduces vibration and noise transmission from the compressor to the structure
• Closed-cell Foam Insulation (option) - Helps to provide cleaner, fiber-free air and reduces sound transmission
• Compressor Blanket (option) - Offers optimum low sound levels

Service Friendly

• Blower Inlet Ring - Allows quick servicing of blower fan motor without disassembly of blower housing
• Insulated Bulkheads - Separates the compressor and blower sections, allowing the unit to be serviced easily during operation
• Schrader Charging Valves - Facilitates service diagnosis by allowing the connection of refrigerant hoses quickly and securely

Robust and Durable Construction

• Galvanized Steel Cabinet - Provides strength and corrosion protection against the elements
• Stainless Steel Drain Pan - Resists cracking and corrosion which provides long-lasting reliability for condensate collection
• Cupro-nickel Coaxial Heat Exchanger (option) - Protects against corrosion when water conditions are of low quality


• Flow Proving Switch (option) - Prevents the operation of the compressor should the water supply fail
• Unit Protection Module (UPM) - Monitors the unit operation and safety controls that protect the unit
• Dual Refrigerant Freeze Sensors - Monitors if refrigerant temperatures reach freeze limits and disables the compressor to protect it and prevent nuisance trips

Compatible products

DDC Progammable Controllers
Control Air 5600
DDC Connected HMI Managers
Control Air M
DDC Connected HMI Managers
Control Air M+
Water Source Heat Pump Accessories
Flow Centers
Water Source Heat Pump Accessories
Hose Kits
Water Source Heat Pump Accessories
Internal Electric Heat Kit
Technical Documents