Heating Gas Fired Gravity Heating System Heating and air conditioning systems include this type of heating that uses propane, LP gas, artificial gas and natural gas as the fuel source. The fuel is controlled by a pressure regulator that allows the gas to be sent to the burner. The fuel is kept under low pressure [...]
Classifications Refrigerants are classified into toxicity and flammability levels for safety and use in HVAC systems. Safety organizations make determinations of potential hazard by classifying refrigerants based on what would happen should a human inhale, ingest, or touch the gas. The organizations responsible for these classifications are the American Society of Heating, Refrigerating and Air [...]