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Originally Posted by Dr.Butler
Hi all. So central AC is essentially a foreign concept to me. My unit is 15 years old but seems to be working fine, and I am of the mindset that if it is not broken..... BUT I notice that for example yesterday, I set the unit to 74 degrees. During the heat, it went up to 77 degrees. The house felt fine, but it seemed like the unit was not keeping up? By the evening it went back to 74. I recently had the unit inspected and topped off with the coolant. So I guess the question, is this essentially normal/expected behavior?
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My Trane A/C unit was built in 2004 and is now leaking coolant (410A). I called Broward who were kind enough to come out promptly. They topped off the coolant and then quoted me over $10M to replace entire system. No thank you. I ordered on Amazon a product called Nu Calgon Easy Seal Direct Inject to seal the leak. Also bought a 3 Way A/C Diagnostic Manifold Gauge Set to get the sealant into my system. Lastly, am replacing air filter, cleaning the fins on outdoor unit and all the junk on the bottom to improve the efficiency. (How to do all this is on YouTube). I hope to get a few more years out of the unit before replacement. All this for less than $200 and a few hours of my labor is more appealing to me than spending over $10M.