Salary of a HVAC technician depends on many factors. Anyway, the median pay for this kind of specialist in the United States is $41,000.xperience. HVAC technician salary by years of experience. Source: Payscale. According to our research, this is the main influencer. As you can see from the graph on the left, the starting wage increases as you gain more experience.
Chlorofluorocarbons (CFCs) are a group of compounds which contain the elements chlorine, fluorine and carbon. At room temperatures, they are usually colourless gases or liquids which evaporate easily.They are generally unreactive and stable, non-toxic and non-flammable.hlorofluorocarbons (CFCs) are a group of compounds which contain the elements chlorine, fluorine and carbon. At room temperatures, they are usually colourless gases or liquids which evaporate easily. They are generally unreactive and stable, non-toxic and non-flammable.
CFCs have some useful properties. For example: they are chemically inert (unreactive). they have a low boiling points (so they turn into gases easily). they are insoluble [insoluble: Unable to dissolve (usually in water).] in water. These properties made CFCs very useful in the past.They were used as refrigerants (the substances needed in refrigerators to remove the heat from inside). They were also used in aerosol cans as propellants (the gases that push the product out through the nozzle).FCs have some useful properties. For example: they are chemically inert (unreactive). they have a low boiling points (so they turn into gases easily). they are insoluble [insoluble: Unable to dissolve (usually in water).] in water. These properties made CFCs very useful in the past.