The gradual phase-out of R-22 refrigerant taught us an important lesson: The type of coolant you use in your AC matters. The wrong type can have a negative impact on the environment. It can also have a negative impact on your system. What kind should you get? Here’s a guide to different refrigerant types and what they’re used for.

  • R-407C. The most common replacement for R-22 in residential ACs, R-407C works well in both packaged systems and ductless mini-splits. It’s clean, efficient, and less expensive than most other refrigerant types, making it ideal for home cooling.
  • R-134A. R-134A is nonflammable, non-toxic, and has no chemicals that deplete the ozone. While many refrigerant types use a blend of different chemicals, R-134A uses just one, which makes it easier to work with. It’s a good, safe, and efficient coolant. However, it’s most commonly used in car AC systems rather than homes. At present, most residential HVAC systems aren’t designed to run on R-134A.
  • R-404A. With its lowest temperatures reaching -49 degrees, R-404A is more often used in refrigerators and freezers, though it can work in HVAC systems as well. Unfortunately, it doesn’t have a great energy-efficiency rating. Because of that, it can cause your system to run longer, increasing both your power bill and your carbon footprint.
  • R-410A. A much more efficient option, R-410A can also be used in both refrigerators and AC units. Like R-134A, it doesn’t use chlorine, making it environmentally safe. It will work in many modern HVAC units. However, if you have an older unit that used R-22, R-410A won’t make a proper substitute, as the pressure is too high.
    • Natural refrigerants. Rather than man-made chemicals, many people are choosing all-natural coolant options for their HVAC systems, such as air, water, carbon dioxide, and ammonia. Not only are they safe and clean, they also tend to cost less than chemical refrigerants and are often more efficient.

To learn more about different refrigerant types and which one is best for your system, contact us at Mowery Heating, Cooling and Plumbing. We proudly serve Indianapolis’ home-comfort needs.