Is it worth repairing a 15-year-old AC unit or replacing it?

Use the $5,000 rule: multiply the unit's age by the repair quote — if the product is over $5,000, replacement usually wins. At 15 years, a repair over ~$350 fails the test. Also decisive: if your unit uses R-22 refrigerant (phased out), any refrigerant repair is money into a dying system — replace.

Likely causes

• Refrigerant type — R-22 systems (pre-2010) face scarce, expensive refrigerant — the strongest replace signal.
• Compressor condition — A failed compressor on a 15-year-old unit is almost never worth replacing alone.
• Repair history — Two or more repairs in the last two summers means the system is telling you something.

What you can check yourself

• Do the $5,000 math with the actual quote before deciding.
• Ask what the repair buys you: a $300 capacitor fix is different from a $1,800 coil.
• Get the replacement quote while the tech is there — it's free information either way.

Typical cost

Common repairs run $150–$600 (capacitor, fan motor) up to $1,500–$2,500 (coil). Full system replacement in Philadelphia, PA typically runs $6,500–$12,000 installed.

When to call a pro

If the unit is 15+, uses R-22, or the quote tops $1,000, get a second opinion before approving — this is the highest-pressure sales moment in home services.

HVAC pros in Philadelphia, PA

• 1
  Reliable Fire & Mechanical Inc. ★ Recommended

  Philadelphia, PA · 2155434558
• 2
  Jack Edmondson

  Philadelphia, PA · (215) 427-3228

We're still verifying other pros nearby before naming them.

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Data by Servik — verified local pros from official license records and public sources. Cost figures are typical ranges, not quotes; a pro's written estimate is the real number.