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R-22 is a colorless gas that is used as a propellant and refrigerant. The technical name for this gas is chlorodifluoromethane.

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Are freon leaks harmful if they are indoors?

R22 (commonly referred to by the brand Freon) is not a toxic substance. Its main danger would be the potential for oxygen displacement just as any other gas that is heavier than air, causing symptoms of asphyxiation. Some people may be highly sensitive to environmental substances in general, and have an asthmatic type response to R22. In the scope of a home system for example, unless the system is leaking the better portion of its charge in a matter of a day or two, there is no danger to the home or inhabitants. In rare cases, very rare, ammonia or an uncommon refrigerant could be used, but the majority of home A/C's for generations have been R22.


How much R410 a freone does it take to contaminate a R22 freone system?

Any amount would be a contamination. Charging with clean R410a does not introduce POA oil, which is where a serious contamination would occur. Mixing R410a without oil will simply render that amount of charge in your system as ineffective. To answer the question how much contaminates, it could be seen on a sliding scale, a very small amount, say a couple ounces, probably will not see a noticeable change. A pound, and you would likely notice some changes in performance related to temps. of evaporator as well as the amount of liquid refrigerant its producing to send to the evaporator. As you increase the ratio of R410a to R22, you would only see incrementally worse performance as the compressor is not producing the pressure required to get any use of R410a. If you had somehow introduced R410a with its oil, their would be a serious reason to pull the entire charge, flush the system, and start clean. The oils of R22 and R410a are %100 not mixable, they will be rendered useless, and system damage will occur shortly.


To change a gas to a liquid you would decrease the heat true or false?

true because for a liquid to change into a gas you would put it on the stove and use double times as much heat to boil it into a gas- so if it's gas to liquid it's the opposite so yes it would decrease