Think of refrigerant as the lifeblood of your HVAC system. Just as blood circulates through the body to deliver oxygen and nutrients, refrigerant continuously moves through an HVAC system, absorbing and releasing heat to regulate indoor temperatures.
During operation, the refrigerant absorbs heat from indoor air, helping to cool your home in the summer before transferring that heat outdoors. Without refrigerant, your HVAC system wouldn’t be able to function properly, making it an essential component for maintaining year-round comfort. In the HVAC industry, refrigerants play a key role in ensuring energy efficiency and effective temperature control.
What Are HVAC Refrigerants?
Refrigerants are specialized fluids designed to transition between liquid and gas states, enabling them to absorb, transport, and release heat efficiently within an HVAC system.

How HVAC Refrigerants Work
HVAC systems rely on refrigerants to transfer heat from indoors to outdoors, keeping homes and businesses comfortable. Here’s how the process works:
- Heat Absorption: Inside the evaporator coils, the refrigerant absorbs heat from the indoor air and transforms it into a gas.
- Compression: The gaseous refrigerant then enters the compressor, where it is pressurized, raising its temperature to facilitate heat transfer.
- Heat Release: In the outdoor condenser coils, the refrigerant releases the absorbed heat, cools down, and returns to a liquid state, ready to repeat the cycle.
Types of HVAC Refrigerants
The evolution of refrigerants has been shaped by environmental considerations, leading to the phase-out of certain chemicals and the development of more sustainable alternatives:
- R-22 (Freon): Previously widespread, R-22 has been phased out due to its ozone-depleting properties.
- R-410A (Puron): A chlorine-free, environmentally safer option, R-410A has become the standard in modern HVAC systems.
- R-32 (Difluoromethane): A new-generation refrigerant that is replacing R-410A, R-32 is more energy-efficient and has a lower environmental impact.
As regulations tighten, the HVAC industry continues to adopt eco-friendly refrigerants that minimize global warming and ozone depletion.
Proper HVAC Refrigerant Management
Handling refrigerants correctly is crucial to prevent HVAC system damage and harmful emissions. Improper disposal or leaks can release chemicals into the atmosphere, negatively affecting both the environment and system performance.
At Beavercreek Heating and Cooling, our NATE-certified HVAC technicians have the training and expertise to handle refrigerants safely and efficiently.
How to Check HVAC Refrigerant Levels
Your HVAC system requires the right amount of refrigerant to operate efficiently. If levels are too low, you may experience poor cooling, increased energy bills, or even system damage.
1. Look for Signs of Low Refrigerant
Some common warning signs of low refrigerant levels include:
– Blowing warm air instead of cool air.
-Longer operating cycles to reach desired temperatures.
-Higher-than-usual energy bills without increased usage.
–Ice buildup on refrigerant lines.
–Hissing or bubbling noises from the system—this may indicate a leak.
2. Check for a Refrigerant Sight Glass
Some HVAC systems are equipped with a sight glass near the refrigerant line, providing a quick way to inspect refrigerant levels.
- If the liquid moves smoothly and looks clear, the refrigerant level is adequate.
- If bubbles or foam appear, it could signal low refrigerant levels or a leak.
If your system doesn’t have a sight glass, proceed to the next step.
3. Contact Beavercreek Heating & Cooling
If you suspect your HVAC system is low on refrigerant, it’s crucial to have a professional inspect for leaks before refilling the system.
Our licensed technicians use specialized tools to diagnose, repair, and safely recharge your refrigerant, ensuring optimal performance and efficiency.

Let us take care of it quickly and professionally! Call Beavercreek Heating & Cooling today at (937) 708-8527, or schedule an appointment online now by clicking here!
Cooling Tip! In the meantime, check out our blog on how to stay cool while waiting for your technician to arrive.