Accredited pros. The EPA needs that anybody who handles or buys refrigerants just after 2018 be experienced and licensed. Right until 2023, split-program ACs utilized R410A coolant Except it was an older unit, which used R22 (Freon). However, Freon was discontinued in America in 2020, R410A units are being discontinued https://eduardozjqvb.losblogos.com/28233060/where-to-buy-r407c-refrigerant