HVAC systems are critical for a comfortable and welcoming home or business throughout the different seasons. As a result, there is a consistent demand for skilled HVAC technicians to keep these systems working properly.
If you’re thinking about a career as an HVAC technician, you’ll need to have a detailed understanding of how these systems function. Virtually all of them involve the use of refrigerants. To give you a taste of what you’ll need to know in this career path, here’s a rundown on some of the most common refrigerants used in the modern HVAC industry.
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What is an HVAC Refrigerant?
HVAC refrigerant is a fluid used in HVAC systems as a medium of heat transfer. The fluid undergoes phases of change from liquid to gas and gas to liquid, enabling temperature regulation in a space. The type of refrigerant that’s used significantly affects an HVAC system’s efficiency, environmental impact, and cost-effectiveness.
Types of HVAC Refrigerants
There are several different main types of refrigerants that are commonly used in modern HVAC systems, each with its own characteristics that make it a preferred choice for certain applications. Understanding the differences will help you advise your clients accordingly.
R-22
This refrigerant, also known as Freon, was once the industry standard for air conditioning systems. However, it was found to cause a high level of harmful ozone depletion, which is why it’s being phased out in most countries. It hasn’t completely disappeared yet, though, so we include it on this list for completeness.
R-410A
The other name for this HVAC refrigerant is Puron, and it has recently been rising in popularity in the industry, slowly replacing R-22. Unlike R-22, R-410A does not contribute to ozone depletion. It also operates at higher pressures, making it more energy-efficient and better suited for modern air conditioning units. However, R-410A does have a relatively high global warming potential (GWP), which has prompted further developments in refrigerant technology.
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R-32
R-32 is a more recent refrigerant gaining traction due to having a lower GWP than R-410A. It offers greater energy efficiency and a smaller environmental footprint. R-32 is commonly used in split air conditioning systems and heat pumps. Its high efficiency and lower environmental impact make it a preferred choice for many manufacturers and technicians, though its flammability requires careful handling.
R-134A
R-134A is widely used in refrigeration and automotive air conditioning systems. It has zero ozone depletion potential, making it environmentally safer than older refrigerants like R-22. It also has low toxicity and flammability potential, which is why it is in high demand.
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ETI School of Skilled Trades offers comprehensive training for those looking to start a career as an HVAC technician. Students who complete the program will be prepared to test for the EPA Section 608 Universal and R-410A certifications, proving their qualification to work with common refrigerants. The program can be completed in as little as seven months, which means you’ll be ready to start applying for jobs sooner than you might think. Take the first step toward your new career by enrolling in the ETI HVAC/R program today.
Key Takeaways
What are the most common HVAC refrigerants?
Common HVAC refrigerants include R-22, R-410A, R-32, and R-134A, each with different performance characteristics, environmental impacts, and applications.
Why are newer refrigerants replacing older ones?
Newer refrigerants are designed to improve energy efficiency and reduce environmental impact by lowering ozone depletion and global warming potential.
Why should HVAC technicians understand different refrigerants?
Knowing the differences between refrigerants helps technicians safely service systems, select the correct refrigerant, and stay current with industry standards and certifications.
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