Did you know that R-22, also known as HCFC-22 or "Freon," was the most common type of refrigerant used for many decades? Its commercialization first took place in 1936, and by the late 50s, it entered the AC market. Today, no one is no longer allowed to produce R-22 in the US, following the EPA's updated 2020 Phase-Out. By 2030, there will be a complete ban on the prod …
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Fire and Smoke Damper Inspection Requirements Pursuant to NFPA 80, 90, and 105, fire and smoke damper installations are required to comply with these codes and these dampers require periodic inspection afterwards. Dampers that are found in disrepair are required to be repaired immediately. Records of installation, testing, and maintenance are to be kept by the property owne …
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