PPE for Refrigerant Handling and RecoveryRefrigerants are central to HVAC work, and their handling carries specific chemical, thermal, and pressure-related hazards. Whether working with legacy refrigerants like R-22 or modern HFOs and HFCs, proper PPE is essential to protect technicians from frostbite, chemical burns, asphyxiation, and toxic exposure.Understanding Refrigerant HazardsRefrigerants exist as liquids under high pressure. When released, they rapidly expand and drop to extremely low temperatures — causing frostbite on contact with skin. In liquid form, refrigerants can cause freeze burns to the eyes similar to chemical burns. Some refrigerants, such as R-410A, are stored at significantly higher pressures than older R-22 systems, increasing the risk of high-pressure injury.Some refrigerants also decompose into toxic byproducts when exposed to high heat or flame. For example, certain HFCs produce hydrofluoric acid (HF) when burned — an extremely dangerous acid that penetrates tissue and causes systemic calcium depletion.Eye and Face ProtectionAlways wear chemical splash goggles when connecting or disconnecting refrigerant hoses, recovering refrigerant, or working with pressurized lines. A face shield is recommended in addition to goggles during high-pressure recovery operations or when disconnecting fittings suspected of being under pressure.Hand ProtectionCryogenic or refrigerant-resistant gloves prevent frostbite during liquid refrigerant contact. Neoprene or nitrile gloves (8 mil or thicker) provide both thermal and chemical resistance. When working with refrigerant oils, which are often blended with synthetic esters or PAG oils, nitrile gloves prevent skin absorption of these lubricants.Respiratory ProtectionIn enclosed or poorly ventilated spaces, refrigerant vapors can displace oxygen and cause asphyxiation — particularly with CO2 (R-744) systems and other high-density refrigerants that settle at floor level. Use a refrigerant monitor/alarm to detect leak levels. For high-concentration exposures, a full-face supplied-air respirator is required. For lower-level work in enclosed spaces, at minimum use a half-face respirator with organic vapor cartridges.Handling Cylinders SafelyAlways transport refrigerant cylinders upright and secured. Never expose cylinders to heat above 125°F. Use a refrigerant recovery machine to capture refrigerant — venting refrigerants is illegal under EPA Section 608. Wear gloves and eye protection whenever connecting or disconnecting cylinder valves.Environmental Compliance and PPESection 608 of the Clean Air Act requires EPA-certified technicians for refrigerant work. PPE protects the technician; proper procedures protect both the technician and the environment.