SELECTING THE RIGHT COMPRESSOR - Refrigeration Club

Embraco has been at the forefront of cooling solutions for the last 5 decades, setting the global benchmark in quality, technical excellence, and practical, sustainable innovation for the refrigeration industry.

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One in five compressors in the world are Embraco and we take that responsibility seriously. Business owners, OEMs and contractors choose Embraco because our products are developed with a commitment to innovation partnership, and a conscious effort to give people a better quality of life. We prioritize continued research and development so that we can offer efficient, cost-saving, and sustainable compressors and cooling solutions, such as condensing units and sealed units ranging from 1/12 to 2HP, for the worldwide market.

Fixed Speed Compressors (ON-OFF)

For many years the Fixed Speed compressor model, commonly known as the ON-OFF compressor, stood alone in the refrigeration industry. It has a time-tested, straightforward design and impressive versatility and reliability. ON-OFF compressors are at work inside a range of common appliances, from your home refrigerator to drinking fountains, ice makers, beverage coolers, and large commercial refrigeration cabinets.

The Embraco ON-OFF hermetic reciprocating compressor pulls refrigerant from the evaporator, increases the vapor pressure and discharges the refrigerant to the condenser. It switches off and on depending on the temperature of the refrigerator, running at a single speed during each cycle. Similarly, it pumps refrigerant throughout the system when activated— it’s either on or off, or in our case, removing heat from the refrigerator or not.

The on-off compressor works in a cyclic regime operating at a fixed speed, rpm or rpm. The compressor turns on when the internal temperature of the refrigeration system reaches its highest point and turns off when the temperature reaches its lowest point – temperatures defined by thermostat position or controller setting.

Our traditional ON-OFF products have been in the market for decades, but we’re still committed to continuous innovation in the market. Nidec Global Appliance invests 3% to 4% of its revenue in research and development and currently has patents in progress (approved or pending approval) related to refrigeration. Continuous improvements in the quality and control of our production processes have increased the energy efficiency of our compressors by 30-40% over the years.

Since sustainability is one of our primary values, we work not only to minimize the environmental impact of our supply chain and production standards but to develop highly energy-efficient solutions and also lead the introduction of natural refrigerants in the refrigeration market.

Embraco carries a wide range of residential and commercial compressors for low to high back pressure applications ready for R-600a and R-290 (propane) refrigerants. The adoption of hydrocarbon refrigerant minimizes direct and indirect impacts on climate change due to the extremely low GWP of the refrigerant, reduced compressor footprint and enhanced energy efficiency of the system.

Variable Speed Compressors (VCC)

Different from the ON-OFF model, Embraco’s variable speed compressor reduces energy consumption by adjusting its speed to match fluctuating cooling demands. In other words, the compressor understands whether the internal temperature is increasing or decreasing and, through this, it modulates its speed to have greater or lesser refrigeration capacity. By changing the operating speed as a function of the thermal load of the system, the variable speed compressor operates to keep internal temperatures more stable, without major changes – low hysteresis. A smaller hysteresis provides a safer and more suitable environment in applications such as food service or medical and scientific.

Inverter technology can reduce energy consumption by up to 40% when compared to ON-OFF technology. The different speeds help each unit reach its target temperature faster by speeding up when necessary and slowing down when demands are lower, such as outside hours of operation. This process also helps stabilize the internal temperature of each unit, providing a safer and more suitable environment for applications such as food service and medical. 

Variable speed technology reduces compressor noise and vibration as well, replacing the recognizable click and hum of your refrigerator turning on with a soft start and a steady low speed. Every model we design is built to be reliable, safe, and maintain performance integrity despite energy requirements and current fluctuations.

Our variable speed compressor does more than reduce operating costs—it maximizes food storage capability, saving more food with less energy in millions of homes and businesses across the globe. That’s real value.

Identifying the Right Pressure Level for Your Application

Embraco compressors are classified into two different motor types:

LST (Low starting torque) – Appropriate for systems with a capillary tube expansion-type device and equalized pressure on startup.

HST (High starting torque) – Appropriate for systems with expansion valve or capillary tube expansion-type device with disequalized pressure on startup.

They are also classified into three different pressure levels, LBP, MBP, and HBP:

LBP (Low Back Pressure) – Low evaporation temperature.

MBP (Medium back pressure) – Average evaporation temperature.

HBP (High back pressure) – High evaporation temperature.

Selecting the Right Compressor

When selecting a new compressor, either for replacement or a new application, firstly, it should notice which expansion device is used in the refrigeration system and then which is the evaporation range of the system. This information must be verified before changing, as a wrong choice of the compressor can result in malfunction and even premature failure of the compressor.

Typically, on replacement, compressors are selected by their HP reference. However, HP is not a unit of measure for cooling capacity. Upon selection, the capacity information (Btu/H, kcal/h or W) must be verified according to the thermal load of the system. Technical characteristics of the system will directly impact the thermal load, such as: equipment wall thickness and insulation, type of door used (solid or glass) or whether the system is vertical or horizontal. For instance, a vertical system of 500 liters with a glass door will need a compressor with greater capacity compared to a system with the same characteristics but with a solid door.

Compressor capacity information should be consulted in its technical spec sheets. You can find Embraco`s datasheets on the Embraco ToolBox app or easy-to-use Product Selector Software. The cooling capacity is a physical quantity measured in equipment called a calorimeter and follows international test standards, such as: ASHRAE, AHAM, ARI, among others. This is a point of attention when you want to compare the refrigeration capacity between compressors, because by changing the test standard the operating conditions of the compressor change, so the capacity also changes.

When understanding the application of the refrigerator (1) , the temperature required for the product to be stored in it (2), the noise levels (depending on where the refrigerator will be) (3), and the sensitivity of the product regarding temperature changes (4), the choice of the compressor will be the most suitable. Embraco`s Replacement Guide will help you to find the right compressor to your application.

Click here to download the reference guide to select the right compressor to your application.

For a full list of compressors and condensing units available to the United States and Canada, download Embraco`s Aftermarket Catalog.

  EM, fixed-speed (on-off) compressor 

F, fixed-speed (on-off) compressor 

FMF, variable speed (VCC) compressor 

First, decide between reciprocating and rotary compressors. Reciprocating compressors are typically less expensive but are louder. Rotary compressors, on the other hand, are quieter and more efficient.

Next, determine the size and type of refrigerator you need. Larger refrigerators and freezers typically require larger compressors. Consider a higher-capacity compressor if your refrigerator is likely to be used heavily.

Finally, evaluate the cost of the compressor. Compare prices between various models of the same type. Consider the upfront cost as well as the energy efficiency to determine which compressor type is the most economical.

By taking the time to evaluate these factors, you can choose a refrigerator with the right compressor that meets your needs. This ensures you get the model that will best fit your home and lifestyle.

Overview of Compressor Options for Refrigeration

When purchasing a refrigerator, you can select from a variety of compressor types. Reciprocating compressors are less expensive and typically louder than rotary compressors. Rotary compressors are quieter and more efficient than reciprocating compressors. Your refrigerator size and usage will also impact the type of compressor you choose. Larger refrigerators and those used heavily require higher-capacity compressors. Finally, consider the cost of the compressor and evaluate the upfront cost as well as the energy efficiency to ensure you are selecting the most economical option. Taking the time to evaluate these factors will help you select the right compressor type for your refrigerator needs.

Advantages of Rotary Compressors Compared to Reciprocating Compressors

When selecting a refrigerator, selecting the right compressor type is important. Two popular options are reciprocating and rotary compressors. Rotary compressors offer several advantages compared to reciprocating compressors.

First, rotary compressors are quieter and more efficient than reciprocating compressors. This makes them a better option for larger refrigerators and those used heavily. Additionally, rotary compressors typically have a longer shelf life as they are more durable and reliable.

Another benefit of rotary compressors is that they tend to be more economical in terms of energy costs. This makes them a better choice for those looking to save money in the long run. Furthermore, the installation process is usually faster and simpler with a rotary compressor, saving you time and effort.

For these reasons, rotary compressors are often the preferred option when choosing a new refrigerator. They offer the advantages of longevity, energy efficiency, and reliability, making them a wise investment.

Understanding Capacity and Its Impact on Refrigeration Compressor Types

When selecting a refrigerator, many factors should be considered. One of the most important is the size and capacity of the refrigerator and how that impacts the type of compressor you choose.

The capacity of a refrigerator refers to the amount of food or drinks it can hold. Refrigerators typically range from 10-25 cubic feet. To determine the right size for your home, consider how much food you need to store. If you anticipate a large amount of food, a larger refrigerator with higher capacity may be required.

In addition to refrigerator size, consider how you plan to use it. If you plan to open and close the refrigerator often or store a large amount of food, a more powerful compressor may be needed. This ensures the refrigerator will be able to keep food and beverages cold.

To select the best compressor type for your refrigerator, take into account the capacity and usage—both now and in the future. Larger refrigerators require more powerful compressors, so selecting the right type is essential for achieving the most efficient cooling. By understanding capacity and its impact on compressor type, you can choose the best option for your refrigerator.

How Different Refrigeration Compressor Types Affect Efficiency and Noise Level

When selecting a refrigerator, compressor size plays an important role in its efficiency and noise level. As the size of the compressor increases, the efficiency and noise level of the refrigerator can improve.

The size of the compressor determines how much refrigerant is circulated throughout the system. A larger compressor can circulate more refrigerant at a faster rate, which improves efficiency. Additionally, a larger compressor operates at a slower speed, reducing the noise it produces.

When selecting a refrigerator compressor, the size must match the system cooling power requirements. An undersized compressor will not be able to keep up with a large cooling requirement, reducing its efficiency. An oversized compressor, on the other hand, runs too quickly and can cause excessive noise.

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Finally, larger compressors tend to be more expensive. If you’re looking for a cost-effective refrigerator, it may be best to choose a smaller compressor that balances size and cooling power needs.

By understanding how compressor size affects efficiency and noise level, you can select the best compressor for your refrigerator based on your needs and budget.

Comparing Prices for Different Refrigerator Compressor Types

When purchasing a refrigerator, comparing prices for different compressor types is a wise approach. It’s important to find a good balance between cost and quality. Each type of compressor has different upfront and energy costs.

Start by researching the various models available on the market and determining the cost of each compressor. The more expensive models tend to provide better cooling power, efficiency, and energy savings. But they also require a more substantial initial investment.

To get the most value for your money, compare energy efficiency ratings and operating costs. Make sure to include the cost of future repairs and maintenance when evaluating the cost of compression models.

Additionally, consider the warranty and the terms of the warranty when selecting a compressor. Ensure the warranty covers the compressor’s parts and labor and is offered by a reliable manufacturer.

Finally, decide if you would benefit from an energy-efficient compressor. These compressors help reduce energy consumption and lower your energy bill over time. They also qualify for federal tax credits or other programs.

By comparing prices for different compressor types, you can make an informed decision that balances cost and quality. This will help ensure you select the best refrigerator for your home and lifestyle.

Considerations for Purchasing Different Refrigeration Compressor Types

Compressor technology is an important factor when selecting a new refrigerator. Modern compressors use advanced technology that helps increase energy efficiency, reduce noise levels, and improve performance. To make sure you are selecting the best compressor type for your needs, consider the following factors.

First, determine the type of refrigerator you need. This will help you identify which types of modern compressor technologies are applicable. For instance, in-line compressors are well-suited to larger refrigerators and freezers.

Next, evaluate the energy efficiency of the compressor. Advanced compressors can use up to 20% less energy than older compressors. This helps reduce monthly energy bills and makes them a more sustainable option.

Finally, review the noise ratings. Some modern compressors are designed to operate at much lower noise levels. Consider how often you will use the refrigerator and how much noise you can tolerate.

Different Refrigerator Compressor Types and their Technologies and Energy Efficiency

When selecting a new refrigerator, it is important to consider the type of compressor used. There are a variety of compressor technologies available, each of which has different energy efficiency ratings.

Rotary compressors are quieter than reciprocating compressors and more efficient for larger refrigerators. In-line compressors can also improve efficiency and reduce the space needed for installation.

Multi-stage compressors are more efficient than single-stage compressors. These compressors can adjust the cooling power as needed, using only the amount needed and reducing energy waste. Variable-speed compressors also help conserve energy, and their ability to slow the compressor helps reduce noise levels.

Solar-powered compressors are an environmentally friendly option and the most energy-efficient type of compressor. They eliminate the need to run electricity and reduce environmental impact.

When shopping for a new refrigerator, consider the energy efficiency of each type of compressor technology. By evaluating the efficiency ratings of each type, you can select the most economical option and reduce your energy bills.

Identifying Features Impacting Performance for Different Refrigeration Compressor Types

When selecting a new refrigerator, the compressor type and its features are key factors to consider. Several features can impact the performance, efficiency, and noise level of a compressor. Identifying these features can help ensure you get the best refrigerator for your needs.

First, evaluate the cooling power of the compressor. Consider the size and capacity of the refrigerator and determine the appropriate cooling power. A more powerful compressor is best for large refrigerators that will be used heavily.

Next, consider the compressor’s size. Smaller compressors offer improved energy efficiency and reduced noise levels, making them a good choice for smaller refrigerators. Larger compressors are better for larger refrigerators and those used heavily.

Finally, evaluate the noise level of the compressor. Some models are designed to reduce noise levels and are ideal if you plan to use the refrigerator in homes with multiple occupants or in proximity to bedrooms.

By identifying and comparing the features of each compressor type, you can select the best refrigerator for your needs. This will ensure the refrigerator meets your lifestyle and budget requirements.

Exploring Pros and Cons of Different Refrigeration Compressor Types

When purchasing a new refrigerator, there are several different compressor types to choose from. Understanding the pros and cons of each type can help you decide which one is best for your needs.

The most popular compressor type is the reciprocating compressor. Advantages of a reciprocating compressor include their lower cost, but they are also louder than other compressor types.

A rotary compressor is a quieter and more efficient option than a reciprocating compressor. They also have a longer shelf life and are more durable. However, they come at a higher cost and require regular maintenance.

In-line compressors are efficient and reduce the space needed for installation. They also provide improved cooling power and require less energy. The downside is they are more expensive and require a more complex installation process.

Multi-stage compressors are energy efficient and offer improved cooling power. They can be expensive, but their ability to adjust cooling power can help reduce energy bills over time.

Variable-speed compressors are another energy-efficient option and provide adjustable cooling power with minimal noise. They are a good choice for refrigerators that will be used heavily.

Before selecting a compressor type, be sure to compare the pros and cons of each based on your needs and budget. This will help you purchase the right refrigerator for your home and lifestyle.

Strategies for Making the Most Cost-Effective Selection among Refrigeration Compressor Types

When shopping for a new refrigerator, an important factor to consider is the compressor. Selecting the most cost-effective compressor type requires balancing several factors, such as the size and type of refrigerator, energy efficiency, and price. Here are some strategies for making the most cost-effective compressor selection.

First, research various models and compare prices. Make sure to include the cost of installation, repairs, and maintenance when selecting a compressor. Additionally, evaluate the efficiency of each compressor and decide if an energy-efficient model is best suited for your needs.

Second, consider the size of the compressor. Determine the cooling power needed based on the size and capacity of the refrigerator and decide if a smaller compressor will be sufficient. Choosing a smaller compressor can help reduce energy consumption and noise level.

Third, review the warranty and read the terms carefully. Find out if the parts and labor are covered and if the manufacturer has a good reputation.

Finally, consider additional costs over the long term. Selecting an energy-efficient compressor may require a larger upfront cost, but it can save you money on your energy bills for years to come.

Key Takeaways

Selecting the right compressor for your refrigerator is important to ensure its performance and longevity. There are several factors to consider, such as size, type, cost, energy efficiency, and noise level. Here are some key takeaways to keep in mind when making your selection.

First, evaluate the size and type of refrigerator you need. Determine if you need a larger, more powerful compressor based on capacity and usage needs.

Second, compare the price and energy efficiency ratings of various compressors. Consider the cost of installation and future repairs and maintenance when evaluating the price.

Third, research different compressor technologies to understand their benefits and drawbacks. Advanced compressors offer improved efficiency, reduced noise, and better performance.

Finally, consider the warranty offered. Make sure to select a compressor backed by a reliable manufacturer.

By evaluating the various factors, you can make an informed decision and select the best compressor type for your refrigerator.

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