Danfoss Scroll Compressor Sz185s4cc: Types, Material Standards, and Common Industrial Uses

Types of Danfoss Scroll Compressors

The Danfoss scroll compressor SZ185S4CC is part of a versatile family of compressors engineered for a wide range of thermal management applications. These compressors utilize advanced scroll technology, known for its reliability, quiet operation, and high energy efficiency. Depending on the application, Danfoss offers specialized variants tailored to meet the unique demands of refrigeration, air conditioning, heat pump, solar, and industrial systems.

Refrigeration Compressors

Engineered for low-temperature environments, these compressors are essential in commercial and industrial refrigeration systems.

Advantages

• Optimized for low-temperature operation
• High energy efficiency in cold environments
• Reliable performance for food preservation
• Reduced energy consumption over time

Considerations

• Primarily designed for cooling, not heating
• Limited use in high-ambient conditions

Best for: Display cases, walk-in coolers, cold storage, beverage vending machines

Air Conditioning Compressors

Designed for comfort cooling in residential and commercial buildings, these compressors deliver consistent and quiet performance.

Advantages

• High energy efficiency (SEER-compliant)
• Low noise and vibration levels
• Smooth operation enhances indoor comfort
• Cost-effective long-term operation

Considerations

• Less effective in extreme temperature swings
• Requires proper refrigerant matching

Best for: Residential HVAC, office buildings, retail spaces, light commercial cooling

Heat Pump Compressors

Built for bidirectional operation, these compressors efficiently transfer heat for both heating and cooling cycles.

Advantages

• Year-round HVAC functionality
• Compatible with variable speed drives
• Adaptable to changing ambient conditions
• Energy-efficient alternative to fossil fuel heating

Considerations

• Performance may decline in very cold climates
• Higher initial system cost

Best for: Residential heating, geothermal systems, industrial process heating

Solar Compressors

Specialized for integration with solar thermal or photovoltaic systems, enabling sustainable climate control.

Advantages

• Powered by renewable solar energy
• Reduces carbon footprint and emissions
• Decreases dependency on grid electricity
• Aligned with green building standards

Considerations

• Requires solar infrastructure investment
• Performance depends on sunlight availability
• Emerging technology with evolving standards

Best for: Off-grid installations, eco-friendly buildings, solar-powered cooling systems

Industrial Compressors

Robust models built for heavy-duty applications involving high pressure, large refrigerant volumes, or continuous operation.

Advantages

• High durability under extreme conditions
• Handles high-pressure refrigerants
• Reliable for 24/7 operation
• Ideal for large-scale cooling systems

Considerations

• Higher initial investment
• May require specialized maintenance
• Larger footprint and installation requirements

Best for: Industrial chillers, process cooling, large refrigeration plants, manufacturing facilities

Compressor Type	Primary Function	Energy Efficiency	Operating Environment	Key Applications
Refrigeration	Cooling at low temps	High	Sub-zero to moderate	Food storage, vending, cold rooms
Air Conditioning	Indoor comfort cooling	Very High	Moderate ambient	Homes, offices, retail
Heat Pump	Heating & cooling	High (variable)	All-season, moderate	HVAC, residential heating
Solar	Sustainable cooling/heating	High (solar-dependent)	Dependent on solar input	Green buildings, off-grid
Industrial	High-capacity cooling	Good to High	Harsh, continuous	Chillers, process cooling

Expert Tip: When selecting a Danfoss scroll compressor like the SZ185S4CC, always verify compatibility with your refrigerant type (e.g., R410A, R32, or CO₂), system controls, and ambient operating conditions to ensure optimal efficiency and longevity.

Danfoss Scroll Compressor Features and Benefits

Danfoss is a globally recognized leader in refrigeration and air conditioning technologies, known for engineering reliability, energy efficiency, and innovation. The Danfoss scroll compressor stands out as a modern solution for residential, commercial, and light industrial cooling systems. Its advanced design improves performance, reduces environmental impact, and enhances user comfort. Below is a detailed breakdown of its key features and how they benefit real-world applications.

Core Features of the Danfoss Scroll Compressor

Inverter Technology

Equipped with inverter-driven motor control, the Danfoss scroll compressor dynamically adjusts its operating speed based on real-time cooling demand. Unlike traditional fixed-speed compressors that cycle on and off—leading to energy spikes and temperature fluctuations—this variable-speed operation ensures smooth, continuous cooling.

This intelligent modulation significantly reduces power consumption, lowers electricity bills, and extends equipment lifespan by minimizing mechanical stress. It’s especially effective in maintaining precise temperature control in homes, server rooms, and medical storage units.

Quiet Operation

One of the most noticeable advantages of the Danfoss scroll compressor is its remarkably low noise output. The absence of pistons, valves, and reciprocating motion eliminates much of the vibration and clatter associated with older compressor types.

Engineered with balanced rotating components and sound-dampening materials, it operates at noise levels often below 55 dB(A), making it ideal for noise-sensitive environments such as bedrooms, offices, libraries, and urban apartments. Reduced vibration also means less wear on mounting systems and surrounding components.

Higher Efficiency

The Danfoss scroll compressor achieves superior energy efficiency through its innovative scroll mechanism, which compresses refrigerant more continuously and with fewer losses than piston-based systems. This results in higher Coefficient of Performance (COP) and Seasonal Energy Efficiency Ratio (SEER) ratings.

By using less electricity to deliver the same cooling capacity, it helps reduce carbon emissions and supports compliance with green building standards such as ENERGY STAR® and LEED. Additionally, optimized refrigerant usage lowers the total environmental footprint over the system’s lifecycle.

Smooth Refrigerant Circulation

The vertical scroll design creates a seamless, continuous path for refrigerant flow, minimizing turbulence, pressure drops, and flow resistance. This smooth circulation enhances thermal transfer efficiency and stabilizes system pressure, reducing strain on other components like condensers and evaporators.

With fewer pressure fluctuations, the system runs more reliably and consistently, improving overall longevity and reducing the risk of refrigerant leaks or component fatigue caused by pulsations common in reciprocating compressors.

Compact Size

Despite its powerful performance, the Danfoss scroll compressor is engineered to be compact and space-efficient. Its smaller footprint allows manufacturers to design slimmer, more aesthetically pleasing air conditioning units and refrigeration appliances.

This is particularly beneficial in tight installations such as wall-mounted split ACs, under-counter refrigerators, and rooftop HVAC units where space optimization is critical. The reduced size does not compromise durability or output, thanks to intelligent component integration and high-density materials.

Reliable Seals

Precision-engineered sealing systems prevent refrigerant leakage—a common cause of performance degradation and environmental harm. Danfoss uses high-grade elastomers and multi-layer sealing technologies resistant to temperature extremes, moisture, and chemical degradation from modern refrigerants like R-410A and R-32.

These robust seals ensure long-term system integrity, reduce maintenance needs, and support sustainability goals by preventing greenhouse gas emissions from refrigerant escape. Regular servicing further extends seal life and system reliability.

Good Cooling Power

Despite its compact size and quiet operation, the Danfoss scroll compressor delivers strong and consistent cooling performance. It efficiently handles a wide range of load conditions, from mild ambient temperatures to extreme heat waves.

Its ability to maintain steady cooling output makes it well-suited for residential air conditioners, commercial chillers, and refrigerated display cases. The combination of high volumetric efficiency and thermal stability ensures rapid cooldown and sustained comfort.

High-Quality Design

Backed by decades of engineering excellence, Danfoss builds its scroll compressors to meet rigorous international standards for durability and safety. Constructed with premium materials and subjected to extensive testing, these compressors are designed for continuous operation in demanding environments.

From corrosion-resistant housings to reinforced internal components, every aspect reflects a commitment to quality. This reliability reduces downtime, lowers total cost of ownership, and reinforces trust among HVAC professionals and end users alike.

Feature	Benefit	Best For
Inverter Technology	Energy savings up to 30%, precise temperature control	Residential ACs, variable load environments
Quiet Operation	Noise reduction of 10–20 dB compared to piston models	Bedrooms, offices, hospitals
Higher Efficiency	Improved SEER/COP, lower operating costs	Green buildings, energy-conscious users
Compact Size	Enables sleek, space-saving designs	Urban installations, retrofit projects
Reliable Seals	Minimizes refrigerant leaks, supports eco-regulations	All applications, especially regulated industries

Why Choose a Danfoss Scroll Compressor?

Energy Savings: Inverter technology and high-efficiency design reduce electricity consumption and lower utility bills over time.

User Comfort: Quiet, consistent cooling improves indoor environmental quality without disruptive noise or temperature swings.

Environmental Responsibility: Lower refrigerant usage and emissions support global sustainability efforts and regulatory compliance.

Space Optimization: Compact form factor allows for greater design flexibility in modern HVAC and refrigeration systems.

Long-Term Reliability: Built with durable materials and proven engineering, ensuring dependable performance for years with minimal maintenance.

Important: To maximize the benefits of your Danfoss scroll compressor, always ensure proper installation by certified technicians and use compatible refrigerants and lubricants specified by the manufacturer. Regular maintenance, including filter cleaning, refrigerant level checks, and electrical inspections, will help preserve efficiency and prevent premature failure. Investing in quality service today ensures optimal performance tomorrow.

Danfoss Scroll Compressor Specifications: SZ185 Model

The Danfoss SZ185 scroll compressor is a high-performance, energy-efficient solution designed for modern refrigeration and air conditioning systems. Engineered for reliability and quiet operation, this compressor combines advanced scroll technology with robust construction to deliver consistent cooling performance across a wide range of applications. Below is a detailed breakdown of its key technical specifications and operational benefits.

Cooling Capacity

1850 watts (1.85 kW)

This cooling capacity makes the SZ185 ideal for medium-sized refrigeration units, residential air conditioning systems, and light commercial cooling applications. The precise output ensures efficient temperature control without overworking the system, contributing to longer equipment life and reduced maintenance costs.

• Suitable for cooling spaces up to 60–80 m² depending on insulation and climate
• Optimized for steady-state operation in continuous-use environments
• Provides stable performance under variable load conditions

Energy Efficiency Ratio (EER)

Approximately 3.2

An EER of 3.2 indicates excellent energy efficiency, meaning the compressor delivers 3.2 units of cooling per unit of electrical energy consumed. This translates into lower operating costs and reduced environmental impact—key advantages for both residential and commercial users focused on sustainability and long-term savings.

• Reduces electricity bills by up to 20% compared to older reciprocating compressors
• Supports compliance with energy efficiency standards and green building certifications
• Enhances system Coefficient of Performance (COP) in well-designed HVAC setups

Compatible Refrigerants

R-22 and R-410A

The SZ185 is designed to operate efficiently with two widely used refrigerants:

• R-22: A hydrochlorofluorocarbon (HCFC) traditionally used in older systems; suitable for retrofit applications where R-22 is still permitted
• R-410A: A chlorine-free, high-pressure HFC refrigerant commonly used in modern, eco-friendly air conditioning systems

Important note: When using R-410A, ensure all system components (including piping, valves, and lubricants) are compatible with high-pressure operation.

Noise Level

56 decibels (dB)

Operating at just 56 dB, the SZ185 is comparable to the ambient sound level of a quiet living room or library. This low noise output makes it ideal for indoor installations, residential settings, hospitals, offices, and other noise-sensitive environments.

• Scroll technology inherently reduces vibration and mechanical noise
• Smooth operation enhances user comfort and minimizes sound pollution
• Recommended for rooftop units, indoor condensing units, and close-proximity installations

Motor Power

0.75 kilowatts (kW)

The 0.75 kW motor strikes an optimal balance between performance and energy consumption. It provides sufficient power to drive the scroll mechanism efficiently while maintaining a low current draw, reducing strain on electrical circuits and improving overall system reliability.

• Lower starting current compared to traditional compressors
• Energy-efficient design aligns with modern environmental regulations
• Ideal for use in solar-powered or off-grid cooling systems with inverters

Operating Voltage

220 volts (V)

The SZ185 operates on a standard 220V power supply, which is widely available in homes and businesses across Europe, Asia, Africa, and many other regions. This voltage compatibility simplifies integration into existing electrical infrastructures.

• Designed for single-phase power systems (typical for small to medium HVAC units)
• Voltage tolerance typically ±10%, allowing stable operation in areas with fluctuating grid power
• Should be connected via a dedicated circuit with proper fusing and grounding

Professional Installation Tip: For optimal performance and longevity, always pair the SZ185 with a properly sized condenser, evaporator, and expansion valve. Use only approved refrigerant types and POE/ester-based oils when working with R-410A. Ensure that all electrical connections meet local codes and that the unit is mounted on anti-vibration pads to further reduce noise transmission.

Specification	Value	Application Benefit
Cooling Capacity	1850 W (1.85 kW)	Ideal for residential AC and medium refrigeration
EER	~3.2	Energy-efficient operation, lower utility costs
Refrigerants	R-22, R-410A	Versatile compatibility for retrofit and new systems
Noise Level	56 dB	Quiet performance for indoor and sensitive environments
Motor Power	0.75 kW	Balanced efficiency and output
Voltage	220 V	Standard voltage for global compatibility

Additional Technical Considerations

• Scroll Technology: Provides smoother compression, fewer moving parts, and higher reliability than piston compressors
• Durability: Sealed design protects internal components from contaminants and moisture
• Maintenance: Minimal maintenance required due to lack of valves and reduced wear
• Environmental Compliance: Supports transition to lower-GWP refrigerants with proper system design
• Warranty & Support: Danfoss offers strong technical support and extended warranty options for registered installations

How to Choose a Danfoss Scroll Compressor: A Complete Buyer’s Guide

Selecting the right Danfoss scroll compressor is essential for ensuring reliable, efficient, and long-lasting performance in refrigeration, air conditioning, and heat pump systems. As a global leader in thermal solutions, Danfoss offers a wide range of high-performance scroll compressors engineered for diverse applications. This comprehensive guide outlines the key factors to consider when choosing a Danfoss scroll compressor, helping you make an informed decision that aligns with your system requirements, efficiency goals, and budget.

Important Note: Always consult the latest Danfoss technical documentation and compatibility charts before selecting a compressor. System design, refrigerant type, operating conditions, and local regulations can significantly impact performance and safety.

Key Factors to Consider When Choosing a Danfoss Scroll Compressor

1. Application Requirements

   Danfoss scroll compressors are designed for a variety of applications including commercial refrigeration, residential and commercial air conditioning, and heating systems. Choosing the correct model depends on your specific use case:

   • High-Temperature Models: Ideal for food preservation in refrigerated storage, beverage coolers, and industrial cooling processes where temperatures are maintained above freezing.
   • Low-Temperature Models: Specifically engineered for freezer units, cold rooms, and display cases operating at sub-zero temperatures, offering enhanced performance under extreme cooling demands.
   • Heat Pump Applications: Danfoss also offers compressors optimized for reversible systems, providing efficient heating during winter and cooling in summer.
2. Energy Efficiency (EER & SEER)

   Energy efficiency is a critical factor in reducing operational costs and environmental impact. Look for compressors with high:

   • Energy Efficiency Ratio (EER): Measures cooling output per unit of electrical input under specific conditions.
   • Seasonal Energy Efficiency Ratio (SEER): Reflects average efficiency over an entire cooling season, accounting for variable loads and temperatures.

   Higher EER and SEER values indicate superior energy performance, leading to lower electricity bills and reduced carbon emissions. Danfoss compressors are designed with advanced scroll technology to minimize internal losses and maximize efficiency across a wide operating range.

3. Noise and Vibration Levels

   Noise output is especially important in residential, retail, or office environments where quiet operation is essential. Danfoss scroll compressors are known for their smooth and quiet performance due to:

   • Inherent design advantages of scroll technology, which reduces vibration and mechanical noise.
   • Models featuring sliding scroll mechanisms that further dampen sound and ensure whisper-quiet operation.
   • Sound levels typically measured in decibels (dB), with lower values indicating quieter performance—ideal for indoor installations.
4. Refrigerant Compatibility

   Ensuring refrigerant compatibility is vital for system safety, performance, and regulatory compliance. While most modern Danfoss scroll compressors are designed for use with eco-friendly refrigerants, always verify compatibility with your system:

   • R-410A: The most common refrigerant for new HVAC systems due to its zero ozone depletion potential (ODP) and high efficiency.
   • R-22 (Legacy Systems): Some older systems still use R-22, though it is being phased out globally. Danfoss offers retrofit solutions and compatible compressors for existing installations.
   • Future-Ready Options: Danfoss is actively developing compressors for next-generation low-GWP (Global Warming Potential) refrigerants such as R-32 and natural refrigerants.
5. Variable Speed (Inverter) Technology

   For optimal comfort and efficiency, consider Danfoss compressors with inverter-driven motors:

   • Allows the compressor to adjust its speed based on real-time cooling or heating demand.
   • Eliminates frequent on/off cycling, reducing wear and tear and extending equipment life.
   • Delivers precise temperature control, improved humidity management, and up to 30–50% energy savings compared to fixed-speed models.
   • Ideal for variable-load environments such as homes, offices, and supermarkets.
6. Durability and Reliability

   Danfoss compressors are built for long service life and robust performance, even in challenging conditions. Key durability features include:

   • High-quality materials and precision manufacturing for reduced mechanical stress.
   • Integrated motor protection systems (e.g., thermal overload protection) to prevent damage from overheating or electrical faults.
   • Corrosion-resistant coatings and hermetic sealing to withstand humid or corrosive environments.
   • High-temperature tolerance and oil management systems that ensure reliable lubrication under extreme operating conditions.
7. Size and Installation Constraints

   Space limitations can influence compressor selection. Danfoss offers compact, space-saving designs ideal for:

   • Residential split systems with limited outdoor unit space.
   • Commercial rooftop units and indoor mechanical rooms with tight clearance.
   • Mobile or portable cooling units requiring lightweight, low-profile components.

   Always verify physical dimensions, mounting requirements, and service access before installation.

8. Cost and Long-Term Value

   While Danfoss scroll compressors may have a higher initial cost compared to some alternatives, they offer significant long-term benefits:

   • Lower energy consumption reduces monthly utility bills.
   • Enhanced durability means fewer repairs and longer intervals between replacements.
   • Higher resale value and system reliability improve return on investment (ROI).
   • Support from Danfoss’s global service network ensures availability of parts and technical assistance.

   Consider total cost of ownership (TCO)—including energy, maintenance, and downtime—rather than just purchase price.

Selection Factor	Recommended for	Avoid If	Key Danfoss Series
High Efficiency (EER/SEER)	Commercial buildings, green projects, high-use systems	Low-budget retrofits without energy incentives	TU, TSZ, HUP
Low Noise Operation	Residential, hospitals, offices, urban installations	Noise is not a concern (e.g., industrial plants)	TSZ, TU Silent, HUP Inverter
Variable Speed (Inverter)	Climate-controlled spaces, variable load environments	Fixed-speed systems with simple on/off control	TSZ, HUP, TUR
Low-Temperature Performance	Freezers, cold storage, food retail display cases	Only used for air conditioning or above-freezing cooling	TU LT, TUR LT, HUP LT
Compact Design	Split AC units, tight mechanical rooms, retrofits	Large industrial chillers with ample space	TU, TSZ, TUR

Expert Tip: Pair your Danfoss compressor with compatible Danfoss controls (e.g., expansion valves, sensors, and controllers) for optimized system performance. Integrated solutions ensure seamless communication, better diagnostics, and enhanced energy savings.

Final Recommendations

• Always match the compressor to your system’s refrigerant, temperature range, and capacity requirements.
• Consider future regulations—opt for low-GWP refrigerants and energy-efficient models to future-proof your investment.
• Work with certified HVAC professionals for proper sizing, installation, and commissioning.
• Register your Danfoss product to access warranty support, firmware updates, and technical resources.
• Perform regular maintenance to maximize efficiency and lifespan.

Choosing the right Danfoss scroll compressor involves balancing performance, efficiency, noise, and cost. By carefully evaluating your application needs and leveraging Danfoss’s advanced engineering, you can select a compressor that delivers reliable, quiet, and energy-efficient operation for years to come. When in doubt, consult Danfoss’s official product selector tools or contact their technical support team for expert guidance.

Frequently Asked Questions About Danfoss Scroll Compressors

Q1: Where are Danfoss Scroll Compressors applied?

Danfoss scroll compressors are widely used across a variety of refrigeration and cooling systems due to their reliability, compact design, and quiet operation. Common applications include:

• Commercial Refrigeration: Supermarket display coolers, beverage chillers, and cold storage units.
• Walk-in Coolers and Freezers: Ideal for restaurants, convenience stores, and food processing facilities where consistent temperature control is critical.
• Medical and Laboratory Refrigeration: Used in environments requiring stable, precise cooling for sensitive materials.
• Transport Refrigeration: Integrated into refrigerated trucks and trailers for temperature-controlled logistics.
• Residential and Light Commercial HVAC: Some models are optimized for air conditioning systems in homes and small offices.

Their compact footprint allows for easy integration into space-limited installations, while their low noise levels make them especially suitable for customer-facing environments like retail stores and restaurants.

Q2: Do Danfoss compressors have energy efficiency properties?

Yes, energy efficiency is a core design principle of Danfoss scroll compressors. These compressors are engineered to deliver superior performance while minimizing power consumption. Key efficiency features include:

• High Energy Efficiency Ratio (EER): Achieves more cooling per watt of electricity consumed, reducing operational costs.
• Optimized Compression Process: The scroll mechanism provides continuous compression with minimal leakage, enhancing thermodynamic efficiency.
• Compatibility with Smart Controls: Works seamlessly with digital thermostats, variable speed drives, and building management systems to modulate output based on demand.
• Eco-Friendly Operation: Supports the use of lower-GWP (Global Warming Potential) refrigerants, aligning with environmental regulations and sustainability goals.

These features not only reduce energy bills but also contribute to lower carbon emissions, making Danfoss compressors a sustainable choice for modern refrigeration systems.

Q3: How do Danfoss scroll compressors compare to piston compressors?

Danfoss scroll compressors offer several advantages over traditional piston compressors, making them the preferred choice in many modern applications. The differences are outlined below:

Feature	Scroll Compressors (Danfoss)	Piston Compressors
Noise Level	Operate quietly due to smooth, continuous compression with fewer vibrations.	Generally noisier due to reciprocating motion and mechanical impacts.
Efficiency	Higher thermal efficiency with less energy loss during compression.	Lower efficiency due to clearance volume and pulsating flow.
Moving Parts	Fewer moving parts (e.g., no valves or connecting rods), reducing wear and failure points.	More complex with multiple moving components prone to wear.
Maintenance Needs	Minimal maintenance required; longer service intervals.	Requires more frequent servicing due to higher mechanical stress.
Vibration	Low vibration enhances system longevity and comfort in indoor settings.	Higher vibration levels may require additional mounting dampeners.
Lifespan	Generally longer operational life due to reduced mechanical stress.	Shorter lifespan under similar operating conditions.

In summary, Danfoss scroll compressors provide smoother, quieter, and more reliable performance than piston compressors, making them ideal for applications where efficiency, durability, and user comfort are priorities.

Q4: What maintenance do Danfoss Scroll Compressors require?

Danfoss scroll compressors are designed for durability and low maintenance, thanks to their simplified mechanical design and high-quality engineering. However, to ensure long-term reliability and peak performance, the following maintenance practices are recommended:

• Regular Visual Inspections: Check for signs of oil leaks, loose connections, or corrosion on electrical terminals.
• Refrigerant Level Monitoring: Maintain proper refrigerant charge—under- or over-charging can reduce efficiency and damage the compressor.
• Oil Quality and Level: Ensure compressor oil is clean and at the correct level; contaminated or degraded oil can impair lubrication.
• Air Filter and Coil Cleaning: Keep condenser and evaporator coils clean to prevent overheating and maintain heat exchange efficiency.
• Electrical Connections: Periodically inspect wiring and contactors for tightness and signs of arcing or overheating.
• System Pressure Checks: Monitor suction and discharge pressures to detect early signs of blockages or inefficiencies.

Most Danfoss models do not require routine internal servicing, but preventive maintenance every 6–12 months can significantly extend service life and prevent unexpected downtime.

Q5: Can people still use older refrigerants with Danfoss compressors?

Yes, select Danfoss scroll compressor models are compatible with older refrigerants like R-22, particularly those designed for retrofit or transitional applications. However, it's important to note:

• R-22 Compatibility: While some units can operate with R-22, this refrigerant is being phased out globally due to its high ozone depletion potential (ODP) and environmental impact.
• Modern Alternatives: Danfoss also offers compressors optimized for eco-friendly refrigerants such as R-407C, R-448A, R-449A, and R-32, which have lower GWP and comply with current environmental regulations.
• System Retrofitting: When upgrading from R-22 systems, proper oil compatibility (e.g., switching from mineral oil to POE oil) and component checks are essential.
• Future-Proofing: New installations should prioritize compressors designed for next-generation refrigerants to ensure regulatory compliance and long-term serviceability.

Danfoss provides detailed compatibility charts and technical support to help users select the right compressor and refrigerant combination for both new builds and existing systems.