Your HVAC system just broke down. The repair quote is sitting in front of you. The big question: is it worth fixing, or is it time to replace the whole thing? It's one of the most common questions we face, and it deserves an honest answer—not just the most profitable recommendation.
The 5,000 Rule
The most widely used rule of thumb in the HVAC industry is the '5,000 rule': multiply the age of your system (in years) by the cost of the repair (in dollars). If the result exceeds $5,000, replacement is usually the smarter financial decision. Example: a 12-year-old system with an $800 repair = $9,600—lean toward replacement. A 3-year-old system with the same repair = $2,400—repair and move on.
Age Matters a Lot
- 0–8 years old: Almost always repair, unless it's a catastrophic failure like a compressor
- 8–15 years old: Evaluate using the 5,000 rule; consider replacement if repairs are recurring
- 15–20 years old: Lean toward replacement, especially if major components have failed
- 20+ years old: Replace—efficiency savings alone often justify the upgrade within a few years
Consider the Efficiency Upgrade
An older system running at 10–12 SEER operates at roughly half the efficiency of a modern 16–20 SEER unit. In a Southern Utah home that runs the AC 5–6 months per year, that difference can easily be $400–$800 annually in electricity savings. A new system that costs $6,000–$9,000 installed can pay for itself in 8–12 years through energy savings—and comes with a 10-year parts warranty.
Warning Signs That Point Toward Replacement
- The compressor has failed (typically $1,500–$2,500 to replace—often not worth it on an older system)
- The heat exchanger is cracked (a safety hazard; replacement is mandatory)
- The system uses R-22 refrigerant (phased out; replacement refrigerant is expensive and increasingly scarce)
- Repairs have been recurring—two or more significant repairs in the past two years
- The system can no longer maintain comfortable temperatures even when running continuously
The Case for Repair
If your system is relatively young (under 10 years), still under warranty, and the repair is a single component like a capacitor, contactor, or blower motor—repair almost always makes more sense. These components are affordable, and a single repair on a healthy system can extend its life by many more years.
Get an Honest Assessment
At Crofts Heating and Air, we'll tell you the truth about your system. If repair makes more sense, we'll say so. If replacement is the better investment, we'll explain exactly why and give you a clear cost comparison. Call (435) 635-7838 for a diagnostic and honest recommendation—no pressure, no upselling.
