Hydrocarbons are compounds containing hydrogen and carbon. These are typically the chief components in many types of fuels. They can come in the form of a gas, liquid, solid, or polymers. Exposure to these substances can cause significant health risks. Toxicity is dependent on multiple variables including compound properties, viscosity, surface Lennox air conditioners are constructed with a component known as an evaporator coil, which is essential to appropriate operation of the unit. Freon (refrigerant) within the evaporator coil absorbs atmospheric heat that passes over a tube and acts as a heat exchange. This process cools the air in the home. Typically, these evaporator coils are Class A refrigerants have low toxicity. Class B refrigerants have high toxicity. Class 1 refrigerants have low flammability. Class 2L refrigerants are only “mildly” flammable. Class 2 refrigerants are low flammability but higher than 2L. Class 3 refrigerants are highly flammable. The most common toxic refrigerant is ammonia, and you would HVAC Freon recharge costs $100 to $320 for R410A refrigerant or $180 to $600 for R22 Freon. An HVAC system should never need more Freon unless the system has a leak or the recharge is part of a repair. Hire a licensed HVAC technician to locate and repair any leaks before refilling the refrigerant. AC contractor using R22 freonfor home AC recharge. Hissing Sound. A hissing, gurgling sound is created when the refrigerant escapes from narrow openings in pipes. Unplug your unit and check for the source of the sound. Repair leaking pipes as needed. Sweet Smell. Refrigerants may smell sweet, like chloroform. Open windows for ventilation to let the leaked gas out. BWfH1l.

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