The $5000 AC Rule is a simple guideline homeowners use to decide whether to repair or replace an air conditioner. You multiply:
Age of the AC system×Cost of the repair
If that number is $5,000 or more, replacement is usually the smarter long‑term choice. If it’s under $5,000, a repair may still be cost‑effective.
$5000 AC RuleExample
- AC age: 12 years
- Repair cost: $450
- 12 × 450 = $5,400 → Replacement is recommended.
Why it matters
- Older systems lose efficiency
- Repairs become more frequent
- New systems offer lower energy bills and better warranties
Additional Sources:
U.S. Department of Energy – Central Air Conditioners Guide
Categories:
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