If your AC just quit on a 100° day, you don't have time for a long article. Call us, get a same-day diagnosis, and decide from there. But if you've got a system that's running but limping, or you're staring at a $2,500 repair quote and wondering if it's worth it, this guide is for you.
We've installed and serviced thousands of AC systems in the Pearland-Houston corridor since 1990. Here's the framework our techs use when a customer asks the same question.
The 50% rule
The simplest rule of thumb: if the repair cost is more than 50% of the cost of a new system, replacement is usually the smarter call. But that's only the starting point. Three other factors swing the math.
1. How old is the system?
In Pearland's climate, AC systems run 7-8 months a year, much harder than systems in cooler climates. A typical lifespan is:
- 0-8 years: Almost always repair. The system has plenty of life left.
- 8-12 years: Repair if the cost is reasonable; start planning for replacement.
- 12-15 years: The decision point. Repair if it's a small fix; replace if it's major.
- 15+ years: Almost always replace. You're throwing good money after bad.
Heat pumps wear faster than straight ACs in this market because they run year-round, so subtract 2-3 years from each bracket if you have a heat pump.
2. What broke?
Some failures are minor. Some are catastrophic. The big ones:
- Compressor failure: Replace. The compressor is half the cost of the unit. Replacing it on an old system is almost never the right call.
- Refrigerant leak in the evaporator coil: Often replace. Coil replacement is expensive and the rest of the system isn't far behind.
- Capacitor, contactor, fan motor: Repair. These are routine wear items, even on old systems.
- Refrigerant leak you can find: Repair. A clean leak fix on a healthy system is worth doing.
3. What refrigerant does it use?
This is the one most homeowners don't think about. If your system uses R-22 (Freon), the EPA banned new R-22 production in 2020. It's still legal to top off existing systems, but the price has climbed dramatically. Recharging an R-22 system can cost meaningfully more than the same job on a modern R-410A or R-454B unit. If you have an R-22 system and you're facing any refrigerant-related repair, replacement is almost always smarter.
"We don't push replacements. About a third of our customers come in expecting we'll tell them to replace, and we tell them to repair instead. The math just doesn't work for them yet. The other side is true too, we'll tell you to replace when it's the honest answer, even though it's a harder conversation."
4. What about efficiency?
Modern systems are 30-50% more efficient than systems from 15 years ago. If your bills have crept up year over year and you're keeping a 15-year-old AC alive, the energy savings on a new system can pay for a meaningful chunk of the install over its life. We'll show you the math both ways, current bills vs. modeled new-system bills, so you see the actual numbers, not estimates.
What we do on the call
When you call us for a diagnosis, you get a written quote in three forms:
- What it costs to repair the immediate problem.
- What it costs to replace the full system, with three brand/efficiency tiers.
- The math: how long the repair likely buys you, what tax credits and rebates apply to replacement, and the energy-cost difference.
You decide. There's no pressure. We've installed brand-new systems for customers who were 100% sure they wanted a repair, and we've talked customers out of replacements they'd already mentally committed to. The right answer depends on your specific situation.
Bottom line
If you're not sure, get a real diagnosis. A good HVAC company will give you the math, the trade-offs, and the time to think it over. If someone tries to pressure you into a same-day replacement decision on a hot afternoon, get a second opinion.
Need a real diagnosis? We'll come out, run the tests, and give you written quotes for both repair and replacement. No pressure, no theater. 281-992-7866 or book online.