R22 Goodman Piston Size Chart

If you’re a homeowner or HVAC technician looking to replace or upgrade your Goodman air conditioning system, it’s essential to choose the correct piston size. The right piston ensures proper refrigerant flow and optimal system performance. That’s why many people turn to Goodman’s piston size chart for guidance.

This chart lists the recommended piston sizes for various tonnage levels and R22 models. It’s a valuable tool to reference when selecting pistons for your system. In this blog post, we’ll dive deeper into using the Goodman R22 piston size chart and offer tips for finding the right piston size for your specific needs.

So, grab a cup of coffee, and let’s get started!

Goodman Piston R22 Size Chart:

HVAC Size – Outdoor UnitPiston Size
1.5 Ton.052 – .059
2 Ton.055 – .065
2.5 Ton.059 – .071
3 Ton.071 – .082
3.5 Ton.078 – .090
4 Ton.082 – .090
5 Ton.088 – .093

What is R22?

If you’re looking for a Goodman piston size chart for R22 refrigerant, it’s important to understand what R22 is and why it matters. R22, also known as HCFC-22, was the most commonly used refrigerant before its production was phased out due to environmental concerns. It was found to contribute to ozone depletion, so many countries, including the United States, have banned its production and import.

If your air conditioning system still uses R22, you may have difficulty finding replacement refrigerant, and you’ll need to consider upgrading to a system that uses a more environmentally friendly refrigerant, such as R410A. The Goodman piston size chart for R22 is designed to help you select the correct piston size for your system if you’re still using this refrigerant, but it’s important to weigh the long-term costs and environmental impact of continuing to use R2

Explanation of R22 Refrigerant

R22 refrigerant is a type of hydrochlorofluorocarbon (HCFC) commonly used in air conditioning and refrigeration systems until the phase-out in 2020. R22 is composed of chlorine, fluorine, and carbon, which can contribute to ozone depletion if released into the atmosphere. This refrigerant functions by absorbing heat from inside the cooling system and transferring it to the air outside, resulting in a cooler air temperature.

However, due to its harmful effects on the environment, it is no longer considered a viable option for new AC or refrigeration systems. Instead, non-ozone-depleting refrigerants like R410A are currently the preferred choice. It is essential to take proper measures during the phase-out process to ensure that R22 is safely disposed of or recycled to prevent further harm to the environment.

Overall, while R22 was once a useful refrigerant, current advancements in technology have made it necessary to transition to more environmentally friendly options.

goodman piston size chart r22

Why Do You Need a Piston Size Chart for R22?

If you’re installing or repairing an air conditioning unit that uses R22 refrigerant, it’s essential to use the correct piston size to ensure optimal performance and efficiency. That’s where the Goodman piston size chart for R22 comes in handy. This chart provides a comprehensive list of piston sizes based on the tonnage and SEER rating of the air conditioning unit.

By using the right piston size, you can ensure that the refrigerant flows at the correct rate and pressure, optimizing the unit’s cooling capacity and reducing energy consumption. It’s important to note that using the wrong piston size can cause the unit to freeze up and damage the compressor. So, before you start any installation or repair work, make sure you consult the Goodman piston size chart for R22 to ensure you’re using the correct piston size for your specific unit.

Importance of Piston Size Chart in Air Conditioning Systems

When it comes to air conditioning systems, the piston size chart is an indispensable tool for ensuring optimal performance. Specifically, if you are using R22 refrigerant, it is crucial to have a piston sized correctly to match your specific unit. This is because the size of the piston will determine the amount of refrigerant flowing through the system at any given time.

Too much or too little refrigerant can cause serious problems, such as decreased efficiency, increased energy consumption, and even system failure. By using a piston size chart, you can ensure that your system is operating at its best, helping to prolong its lifespan, save money on utility bills, and keep your home or business comfortable all year long. So if you are working with R22 refrigerant, it’s critical to invest in a piston size chart and use it properly to get the most out of your air conditioning system.

Finding the Right Piston Size for Your Goodman R22 AC

If you’re in search of the right piston size for your Goodman R22 AC, you’ll want to refer to the Goodman piston size chart R2 This chart provides the necessary information to help you find the right piston size for your AC system. The piston is a part of the AC system that helps regulate the flow of refrigerant.

It’s important to have the correct size to ensure that the refrigerant flows smoothly and efficiently throughout the system. A mismatched piston size can lead to issues such as poor cooling performance, a decrease in the lifespan of your AC system, and even potentially higher energy bills. By referencing the Goodman piston size chart R22, you can easily find the corresponding piston size for your specific AC system and ensure optimal performance and longevity.

Steps on How to Utilize the Piston Size Chart

When it comes to finding the right piston size for your Goodman R22 AC, the first step is to utilize the piston size chart. This helpful tool will provide you with the necessary information to select the right size of piston for your specific system. To start, you’ll need to determine your unit’s tonnage and match that to the recommended piston size.

This information can usually be found on your unit’s data plate. Once you have that information, simply refer to the piston size chart and locate your tonnage range to find the corresponding piston size. It’s important to choose the correct size of piston to ensure optimal performance and efficiency of your AC system.

By following these steps and utilizing the piston size chart, you’ll be well on your way to enjoying cool, comfortable air throughout your home or office.

Examples of Piston Sizes for Your R22 System

When it comes to finding the right piston size for your Goodman R22 AC, it’s important to understand what the piston does and how it affects your system’s performance. The piston, also known as an orifice, is a small component that controls the flow of refrigerant through the system. Choosing the right size piston is critical for ensuring that your AC operates with maximum efficiency and that you avoid issues like low refrigerant levels or frozen coils.

Some common piston sizes for R22 systems include 0.052, 0.059, and 0.

066, but it’s essential to consult your manufacturer’s specifications to determine the correct size for your particular model. By selecting the appropriate piston size, you can help your R22 system maintain optimal cooling power while avoiding the costly repairs and energy waste that come with an improperly sized or damaged piston. So take the time to research and find the right piston size for your AC, and let your Goodman R22 system work to its fullest potential.

Benefits of Using the Correct Piston Size

Using the correct piston size for your air conditioning system is crucial for optimal performance and energy efficiency. The Goodman piston size chart for R22 provides a comprehensive guide for selecting the appropriate size of piston for your system. A piston that is too small will not be able to deliver enough refrigerant, leading to reduced cooling efficiency and higher energy consumption.

On the other hand, if the piston is too large, it may cause a pressure drop in the system, reducing the airflow and increasing the risk of compressor damage. Therefore, it is essential to choose the right size of piston and ensure that it is properly installed. By doing so, you can keep your AC system running smoothly, save energy, and reduce operating costs over time.

Efficiency and Performance of Your Air Conditioning System

As a homeowner, you want to ensure your air conditioning system operates efficiently and performs optimally. One way to achieve this is by using the correct piston size in your AC system. Using the wrong piston size can cause a host of issues, including decreased efficiency and performance.

A correctly sized piston helps to regulate the refrigerant flow, ensuring it’s the right amount for the system’s requirements. This prevents issues like flooding or starving, ensuring the AC system doesn’t have to work harder than necessary, which can increase energy consumption and operating costs. Essentially, using the correct piston size can help you save money over the long term by reducing the wear and tear on your air conditioning system.

So, it’s important to work with a trusted HVAC contractor to ensure you have the right size piston installed in your system for maximum efficiency and performance.

Cost-Effectiveness of Maintaining Your AC with the Right Piston Size

As important components of your air conditioning system, the piston plays a crucial role in maintaining the right level of cooling in your home or office. Using the correct piston size can provide numerous benefits, including ensuring optimal performance while keeping your energy costs low. A properly sized piston not only enhances the system’s efficiency but also leads to its longevity, reducing the need for frequent repairs or replacements.

By investing in the right piston size, you can prevent unnecessary wear and tear of your AC’s compressor, tubing, and other parts, allowing you to save time and money in the long run. So, be sure to consult with a professional to determine the right piston size that suits your AC and take proactive measures to maintain its performance and lifespan.


In summary, the Goodman piston size chart for R22 is a must-have tool for any HVAC technician or installer working with this refrigerant. With accurate measurements and precise calculations, it ensures optimal performance and efficiency of the system. But don’t let its technical nature fool you, deciphering these numbers is like a game of chess – one wrong move can lead to a checkmate.

So, let this chart be your knight in shining armor and always trust the numbers. Happy cooling!”


What is the purpose of Goodman piston size chart for R22?
The Goodman piston size chart for R22 helps determine the proper piston size for the refrigerant in a Goodman air conditioning unit.

Can I use a piston from a different brand in my Goodman R22 system?
No, it is not recommended to use a piston from a different brand in your Goodman R22 system as it may not be compatible and could cause damage to the unit.

Where can I find the Goodman piston size chart for R22?
The Goodman piston size chart for R22 can be found in the installation instructions or technical specifications manual for the specific air conditioning unit or on the Goodman website.

What should I do if I can’t find the proper piston size for my Goodman R22 unit?
If you can’t find the proper piston size for your Goodman R22 unit, consult a licensed HVAC technician who can help determine the correct size and install it properly.

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