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Nobody wants to be told their air conditioner needs replacing, and plenty of homeowners have been told it by someone who stood to gain from the answer. So here is the framework we use, laid out plainly enough that you can apply it yourself and check anybody's recommendation against it.
Most of the time the answer is repair. The cases where it is not tend to share a few specific traits.
Start With These Four Questions
1. How Old Is It?
Las Vegas systems run brutal hours, so 15 to 20 years is a realistic lifespan and many arrive at the low end. Under 10 years, repair is almost always right. Past 15, every repair deserves a harder look.
2. What Does This Repair Cost?
The common rule is that if a single repair approaches half the cost of replacement, replacement deserves serious consideration. It is a guideline, not a law, and it only means something alongside the age question.
3. How Many Repairs Recently?
One failure is a failure. Three service calls in two summers is a pattern, and the pattern usually continues. Add up what you have already spent before deciding what to spend next.
4. Is It Still Keeping Up?
A system that runs constantly and still cannot hold temperature in August has a problem beyond the part that just broke. That is worth diagnosing before you put more money into it.
Repairs That Are Almost Always Worth Making
- Capacitors and contactors, the most common Las Vegas failures and inexpensive to fix
- Condensate drain clogs and float switch trips
- Blower motor and fan motor replacement on a system under roughly 12 years old
- Thermostat problems, which are frequently mistaken for equipment failure
- A refrigerant leak that can be located and properly repaired, on a system otherwise in good shape
- Control board failures on newer equipment
Where Replacement Usually Wins
- Compressor failure on an older system. The compressor is the single most expensive component. On a unit past 12 to 15 years, replacing it means putting the priciest part into equipment whose other parts are the same age.
- A leaking evaporator or condenser coil on an aging unit. Coil replacement is labor-intensive, and on old equipment it frequently precedes other failures.
- Repeated refrigerant loss with no findable leak. Paying to refill a system every season is paying rent on a problem instead of solving it.
- R-22 systems. Production has been phased out, and what remains is expensive. A major repair on an R-22 unit is money spent on a dead-end platform.
- Cracked heat exchanger on a gas furnace. This is a safety issue, and on an older furnace replacement is generally the right call rather than a repair.
A Simple Way to Run the Numbers
| Situation | Leaning |
|---|---|
| Under 10 years, first significant repair | Repair |
| 10 to 15 years, repair under about a third of replacement cost | Repair |
| 10 to 15 years, major component failure | Get both numbers and compare seriously |
| Over 15 years, any major repair | Replace |
| Any age, third repair in two seasons | Replace |
| R-22 system needing refrigerant work | Replace |
| System never kept up even when healthy | Diagnose sizing and ducts before deciding anything |
What to Ask Whoever Is Quoting You
- What exactly failed, and can you show me?
- What does the repair cost, and how long would you expect it to hold?
- What has this system had done to it before?
- If I replace, was a load calculation performed or is this sized off the old unit?
- What condition is the ductwork in?
- What is covered by warranty, on parts and on labor?
A contractor who cannot answer these without getting defensive is telling you something. For a system that is still fixable, start with our air conditioning services. If you are leaning toward replacement, the system type guide covers your options, and the maintenance guide covers keeping the next one alive longer.
We Will Tell You When Repair Is the Better Deal
Straight diagnosis, both numbers on the table, and no pressure toward the bigger ticket. Free replacement estimates with 36-month 0% financing and 90 days of zero payments.
(702) 333-8057 — Call NowSchedule OnlineFrequently Asked Questions
How long should an AC last in Las Vegas?
Roughly 15 to 20 years, and plenty of systems here land nearer the bottom of that range. Our run hours are far above the national average and the heat is hard on components. Maintenance is the biggest variable, a well-maintained system routinely outlasts a neglected one by several years.
Is the 50 percent rule a real thing?
It is a useful guideline, not a rule. If a repair costs about half of replacement, replacement deserves genuine consideration. But it only means something combined with age and repair history. A 50 percent repair on a six-year-old system is usually still worth doing.
My AC is old but still working. Should I replace it before it fails?
If it is past 15 years, replacing it on your schedule rather than during a July breakdown is worth considering. You get to compare options, take advantage of financing, and avoid an emergency call in peak season. If it is running well and getting maintained, though, there is no urgency in replacing something that works.