Semi-hermetic reciprocating compressors

  • Overview
  • Product range
  • Software

BOCK® semi-hermetic compressors: Your sustainable choice for all HVAC-R needs

Danfoss BOCK® compressors are your go-to choice for commercial and industrial refrigeration systems worldwide, spanning air conditioning, cooling, heating, heat recovery, and heat pumps. Our commitment to a greener future has led us to innovate efficient and reliable CO2 and other low-GWP refrigerant compressors, ensuring functionality, economic efficiency, and environmental responsibility go hand in hand.

But that's not all; we're also pioneers in semi-hermetic hydrocarbon compressors for refrigerants like R290 (propane) and R1270 (propene), meeting all F-Gas Regulation requirements for long-term use. Welcome to the sustainable world of Danfoss BOCK® compressors.

Features and benefits of semi-hermetic reciprocating compressors:

Natural refrigerant—R744 and R290—and low-GWP refrigerant ranges to fit all application requirements.

CO2 transcritical and subcritical applications

ATEX HC models available

Versatility: suitable for a wide range of stationary and mobile applications

Efficiency: flexible performance tailored to specific needs, leading to cost savings

Reliability: exceptional durability, even in challenging conditions

Eco-friendly: compliant with environmental regulations and standards

Oil pump reliability: reliable oil supply, even in smaller capacities

Explore the range of semi-hermetic reciprocating compressors

Natural Refrigerants in Focus

Embracing the Future: Natural Refrigerants in Focus

The changing global climate is a reality we face every day, with our planet growing increasingly. As an industry, we have a responsibility to take action. With 15% of the world's electricity consumption used for refrigeration and air conditioning, the way we manage, control and optimize cooling will become even more important.

In the compressor development we have been committed to natural refrigerants since 1993, offering a range of compressors for CO2 (R744) and hydrocarbons (HC). Additionally, we invest in developing compressors that use low-GWP refrigerants to continue driving innovation in the synthetic refrigerant sector.

Looking for spare parts?

BOCKSHOP Spare parts catalog


The online spare parts catalog allows you to find the right spare parts and accessories for BOCK compressors and units with just a few clicks. 


Product range

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    Semi-hermetic low-GWP compressors: HG LG-series

    Explore Danfoss BOCK®'s LG compressor range, designed for low-GWP HFO refrigerants, delivering reliable, efficient, and eco-friendly cooling solutions. With global regulation compliance, specialized technology, and a comprehensive range, trust in our decades of expertise for sustainable refrigeration and air conditioning

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    Semi-hermetic hydrocarbon compressors: HG HC-series

    Experience the natural choice in refrigeration with Danfoss BOCK®'s hydrocarbon compressors. Designed for efficiency and sustainability, these compressors offer a reliable, long-life design with a wide and safe operating range. Optimize your total cost of ownership and embrace eco-friendliness in applications like supermarket refrigeration and chillers with BOCK® HC compressors.

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    Semi-hermetic ATEX compressors: EX-HG-series

    Danfoss BOCK® leads in ATEX/IECEx compliant compressors for explosive atmospheres in zones 1 and 2. Our semi-hermetic HG series compressors offer explosion-proof reliability, stringent quality standards, and customer-centric solutions, ensuring safety and efficiency in hazardous environments.

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    Semi-hermetic CO₂ compressors: HGX CO₂-series

    Discover Danfoss BOCK®'s eco-friendly excellence with semi-hermetic CO2 compressors. Our commitment to sustainability means efficient and reliable solutions for commercial and industrial refrigeration, air conditioning, heating, and more. Choose from versatile, high-pressure, and specialized compressors that meet environmental standards while ensuring peak efficiency and operational reliability

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    Semi-hermetic compressors: HG and HA-series

    Explore Danfoss BOCK®'s HG and HA compressor ranges, offering exceptional cooling efficiency and reliability. These compressors are designed for various refrigerants, feature improved efficiency, compact design, and energy savings, making them versatile solutions for refrigeration, air conditioning, and more.


Compressor selection tools - VAP

The VAP tool is ideal for finding the appropriate compressors or units for stationary applications. By inputting the required refrigerating capacity and operating conditions, the tool will display compatible components right away. In the VAP tools you will also find additional details about the suggested compressors.