No. You need a license for the gas and a set of gauges to do it right. Plus, you got to find the leak first.
Waste of money. At that age, you're just throwing cash at a sinking ship.
Yeah. It’s how you catch a $50 part failure before it turns into a $3k replacement.
Bad ductwork or the system isn't balanced. Could also be a leak in the attic flex pipe.
If the fan is spinning but the unit just hums or clicks, the compressor is likely shot.
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