The HVAC industry has seen a wave of changes in recent years, especially regarding refrigerants. As we progress into 2025, it’s vital for homeowners to understand these developments to make educated choices about their heating and cooling systems. Whether you plan to upgrade an existing setup or maintain your current one, being aware of the latest trends in refrigerant technology is essential.
What Is the Purpose of HVAC Refrigerant?
Refrigerants in HVAC systems are key to their functioning, helping to cool spaces by absorbing ambient heat and evaporating. Unfortunately, many older refrigerants have been deemed environmentally detrimental, prompting a shift towards more sustainable alternatives.

What HVAC Refrigerant Is Being Phased Out?
A significant change that has taken place is the phasing out of R-22, a refrigerant once prevalent in many older AC systems. As of January 1, 2020, the production and import of R-22 were banned in the United States. This shift has led many homeowners with systems reliant on R-22 to encounter higher maintenance and refill costs due to the dwindling and expensive stock of R-22.
In response, R-410A has emerged as the standard for newer HVAC systems, recognized for being more environmentally friendly. Unlike its predecessors, R-410A does not harm the ozone layer and is more energy efficient. However, the innovation doesn’t stop there.
Refrigerants like R-32 and R-454B are gaining traction because they have a lower Global Warming Potential. These options present a more sustainable future as the HVAC industry moves towards greener technologies. R-32, in particular, is becoming popular for its enhanced energy efficiency and reduced environmental impact.
Homeowners with systems utilizing R-22 should strongly consider upgrading to models that use R-410A or other eco-conscious refrigerants. Although the initial investment for a new system can be substantial, the long-term savings on energy bills and maintenance, along with environmental benefits, make the upgrade worthwhile.
How to Check Your HVAC Refrigerant Levels
Your HVAC system relies on the right amount of refrigerant to operate efficiently. If refrigerant levels are too low, you may experience poor cooling, increased energy bills, or even system damage.
As a homeowner, knowing the warning signs can help prevent costly repairs. Here’s what to do if you suspect your refrigerant levels are running low.
1. Watch for Signs of Low Refrigerant
If your air conditioner is blowing warm air, running longer than usual, or if your energy bills have suddenly increased, it could be due to low refrigerant levels. Another key indicator is ice buildup on the refrigerant lines.
Additionally, hissing or unusual noises coming from your system may suggest a refrigerant leak that needs immediate attention.
2. Check for a Refrigerant Sight Glass
Some HVAC systems have a sight glass near the refrigerant line, allowing for a quick visual check. If the liquid inside flows smoothly and looks clear, your system likely has the correct refrigerant charge. However, bubbles or foam may indicate low refrigerant levels or a potential leak.
If your system doesn’t have a sight glass, don’t worry—just proceed to the next step.
3. Call the Experts at Huber Heights Heating & Cooling
We’ve got you covered! If your HVAC system is low on refrigerant, it’s essential to have a licensed professional inspect it for leaks before refilling the system. Our expert technicians have the tools and training to diagnose, repair, and safely recharge your refrigerant, ensuring your system runs efficiently.
We are proud to say that at Huber Heights Heating & Cooling our technicians are NATE-certified as well as have extensive training and years of accumulated experience.
Keeping abreast of refrigerant regulations is also crucial. This knowledge helps homeowners comply with new laws while ensuring their choices are environmentally responsible.

For those uncertain about their system’s refrigerant requirements or contemplating an upgrade, consulting with a certified HVAC professional is advisable. These experts can offer valuable guidance on energy-efficient and environmentally friendly options tailored to specific needs.
When selecting a new HVAC system, energy efficiency should be a top consideration. Modern systems that use advanced refrigerants are typically more electricity-efficient, leading to noticeable savings on utility bills over time.
As the world of HVAC refrigerants continues to change, homeowners must stay informed. Knowing which refrigerants are being retired and which are emerging as the norm will aid in making educated decisions about home HVAC systems. By focusing on energy efficiency and seeking professional advice, you can ensure a comfortable and eco-friendly home environment.
For personalized guidance and services, don’t hesitate to reach out to your local Huber Heights Heating & Cooling experts. Call us at (937) 226-9675, or schedule an appointment online now by clicking here! We are ready to assist with any HVAC needs, ensuring your home remains both comfortable and environmentally friendly.
In the meantime, feel free to read our blog on how to stay cool while you wait for your technician to arrive.