Summer Heat Is Here — Is Your Aging AC Ready to Fail?

Every summer we get the same call, dozens of times a week: "My AC just quit — can you come today?" The answer is almost always yes, but the truth is most of those failures were preventable. They happen on the hottest days of the year, to the oldest units on the block, and almost never at a convenient time.

Why Older Units Fail in the Heat

An AC system is essentially being asked to move heat out of your home into air that is already hot. The hotter it gets outside, the harder every component works — compressor, capacitors, fan motor, refrigerant lines. A unit that limped through last summer may not survive this one.

The Most Common Failures We See on Older Systems

• 1.Failed capacitors — the #1 heatwave call. A $20 part that, when it dies, leaves your whole system dark.
• 2.Burned-out compressors — the most expensive failure. Often the final straw on units 12+ years old.
• 3.Low or leaking refrigerant — older R-22 systems are especially vulnerable, and that refrigerant is no longer manufactured.
• 4.Frozen evaporator coils — caused by dirty filters, low refrigerant, or weak airflow on tired blowers.
• 5.Contactor and relay failure — small electrical parts that fry under sustained high-load operation.

Is It Time to Replace, Not Repair?

If your AC is over 10 years old, runs constantly, struggles to keep the house below 75°F on hot afternoons, or has needed multiple repairs in the last two seasons — replacement is almost always the smarter call. Modern high-efficiency units use 30–50% less energy and come with real warranties. The break-even point usually arrives faster than homeowners expect.

Don't Wait for the Heat Advisory

Once a heat advisory hits, every HVAC company in the region is booked solid. Diagnostics get delayed. Replacement quotes take days. Meanwhile your home sits at 85°F with kids, pets, or elderly family members inside. The cheapest, safest moment to deal with an aging AC is before it breaks — not the afternoon it does.