My AC 'needs a little refrigerant' every summer. Is that a scam?

Here is the single most useful fact in residential air conditioning: refrigerant is not a consumable. It circulates in a sealed loop, the same charge for the life of the system, the way brake fluid does in your car. A healthy AC installed fifteen years ago still holds the refrigerant it shipped with.

So “it just needs a little Freon” is never the whole sentence. If the charge is low, refrigerant left the system, and it left through a hole. The honest version of the sentence is “it has a leak, and here are your options.” The dishonest version shows up every June with a tank, charges you for a pound or two, and leaves knowing the appointment renews itself, because the hole is still there. Some homeowners have bought the same top-off five summers running, which by the fifth year has quietly cost more than fixing the leak would have.

Why the annual top-off gets worse, not just repetitive: a leaking system runs undercharged for months at a time, which strains the compressor, and the leak rarely stays the same size. Meanwhile the refrigerant itself keeps getting more expensive, especially on older systems, and if yours runs R-22 the top-off math collapses entirely into a replacement conversation.

What the honest path looks like: a leak diagnosis first, locating where the refrigerant is escaping, commonly at coil joints or line fittings. Then a written flat price for the repair, $340 to $890 on our published menu, which includes fixing the leak and restoring the correct charge. On an older system where the repair math fails the 30% rule, we say that instead, in writing, with replacement numbers next to it.

The question that ends the game: next time anyone offers a top-off, ask one thing: “Where is it leaking?” A technician who cannot answer has not diagnosed anything. He has weighed a tank.