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You have to have a freon leak detector. Are you can put freon dye in the system and find a leak that way.
Probably low on freon. Have the system tested for leaks, repair if necessary and recharge system.
A closed system would be full of freon without any leaks and a opened system would have no freon or has leaks...........
Yes, freon can indeed cause corrosion. Freon leaks in vehicles can corrode surrounding parts and components in the car over time.
If it leaks it leaks. Central units are self contained with no external rotating shaft seals to leak. If the tech came out and added freon without detectng the leak, either he did exactly what you directed, or he is a BS artist hoping for a repeat job.
With a Halogen electronic leak detector.
There are commercially available sealers made.
If the system does not have any leaks, it will last forever.
If there are no leaks, it would not need recharged.If there are no leaks, it would not need recharged.
You can find a Freon leak in a home Ac unit by using a leak detector. These instruments are capable of detecting trace amounts of Freon and pinpoint leaks.
Yes, Freon can be hazardous to humans if there is a leak from an air conditioning unit. While it is not toxic in small amounts, exposure to high concentrations can lead to respiratory issues, dizziness, or headaches. Additionally, Freon is a greenhouse gas that contributes to environmental concerns. It's important to address any leaks promptly and safely with a professional.
Gasoline and factory odor and catterpillar leaks, my man! And sewage.