R32 is a refrigerant used in air conditioners and HVAC units, and it’s a gas at room temperature. Also known as difluoromethane, it’s a hydrofluorocarbon and its chemical formula is CH₂F₂. When compared to other types of refrigerant, R32 has a higher energy efficiency ratio (EER) and a lower Global Warming Potential (GWP). These benefits have made it a common choice in residential and commercial HVAC systems.
Here’s a quick look at some key properties of R32 refrigerant:
- Boiling Point: -51.7°C / -61.1°F
- Ozone Depletion Potential (ODP): 0
- Solubility in Water: 0.44 g/L at 25°C / 77°F
- Critical Temperature: 78.1°C / 172.6°F
- Global Warming Potential (GWP): 675
Where is R32 Used?
Many countries have banned or restricted the use of older refrigerants, including the widely used R134a refrigerant and the older R-22 refrigerant, due to high ODP and GWP. As a result, new energy-efficient refrigerants have hit the market. This includes R32. Today, it’s found in several different types of modern HVAC systems, such as:
- Residential air conditioners, including split and window units.
- Commercial air conditioners, like central AC units, packaged AC, and rooftop systems.
- Heat pump systems.
- Chillers in some industrial and commercial applications.
Although it isn’t common, R32 has also been found to be safe to use in refrigerators.
We can help you to determine if your air conditioner uses R32 refrigerant, or you can check your unit’s manual from the manufacturer. Some systems may also have a label or nameplate that details the type of refrigerant the unit requires. If your HVAC unit doesn’t have a label or you can’t find the manual, contact us and we will help you figure it all out. Using the wrong type of refrigerant can result in unwanted chemical reactions, poor efficiency, and damage to the system.