Quote:
Originally Posted by Hoosierb4
I was once an A/C engineer and think that retired guy is giving good advice. I change the filter and flush the drain a couple of times a year. I don't like it when the service tech hooks up the gages to check the refrigerant charge level, as I've seen them lose a considerable amount of refrigerant when they do it. Making sure that the outdoor coil is clean is also important.
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I agree on loosing some refrigerant but on the new carrier variable speed inverter systems, the techs can use an app that connects to the condenser via bluetooth and they can read all the pressures without connecting any gauges to the unit. Very cool.