Some specialized online retailers may sell reclaimed R-22, but often require EPA Section 608 certification to purchase.
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The safest and most common method is having a certified HVAC professional supply the refrigerant during a service call. Some specialized online retailers may sell reclaimed R-22,
Some online sources might sell uncertified or questionable products; ensured it is compliant with EPA regulations. To give you the most relevant info, could you tell me: could you tell me: