Is HCFC-22 a CFC?

The main culprits, according to scientists, are chlorofluorocarbons (CFCs), particularly hydrochlorofluorocarbons (HCFCs). These include the R-22 refrigerant used by most air conditioners back then. Because of this, the Environmental Protection Agency (EPA) has ordered the R-22 phase-out.

Is Difluoromethane a CFC alternative?

Difluoromethane is a molecule used as refrigerant that has prominent heat transfer and pressure drop performance, both in condensation and vaporization. Pentafluoroethane is a common replacement for various chlorofluorocarbons (i.e Freon) in new refrigerant systems, especially for air-conditioning.

Is HCFC-22 a greenhouse gas?

Both HCFC-22 and HFC-134a are potent greenhouse gases, with global warming potentials (GWPs) of 1,760 and 1,300 on a 100-y time scale (2).

Is HCFC-22 still used?

HCFC-22, commonly referred to as R-22, is used as a refrigerant in many applications, including residential air conditioning (AC) systems. Starting on January 1, 2020, U.S. production and import of HCFC-22 will end, but you may continue to use HCFC-22 in your existing system for as long as necessary.

Is R22 carcinogenic?

It is not a carcinogen, teratogen, or mutagen, and it does not damage the liver. When it is inhaled, it is rapidly excreted by exhalation, and it is not significantly accumulated in the body.

What replaced CFCs in refrigerators?

hydrofluorocarbons
Compressor lubricants have had to be changed since the majority of the CFC and HCFC replacements are hydrofluorocarbons (HFCs). Typically, HFCs are immiscible in the traditional mineral oils and thus a new generation of synthetic oils (usually polyol ester based) have been produced.

Is difluoromethane a greenhouse gas?

Difluoromethane is a greenhouse gas, i.e., it contributes to global warming.

Is HCFC-22 the same as R22?

R22 refrigerant is an important component of your HVAC system. It is a chemical commonly known as Freon that keeps the air coming from your air conditioning system cool. R22 is noted by the EPA as HCFC-22.