REPAIR IT OR REPLACE IT? DECIDING WHAT TO DO WITH AN AGING AC IN THE TREASURE VALLEY
We've got a mild stretch this week before things heat back up Friday, and that's honestly the best time to be reading this. Nobody wants to make a five-figure decision about their air conditioner while sweating through a July afternoon with a dead unit. If your AC is getting up there in years and you've started wondering whether it's worth fixing the next time it acts up, here's how we'd walk you through it.
We'll say this up front: we replace systems for a living, but we're not interested in talking you into one you don't need. A good repair on a system with years left in it is the right call, and we'll tell you when that's the case. Here's how we think about it.
How long does an AC actually last around here?
Most central AC systems run 12 to 15 years. Out here in the valley, a well-maintained unit can push past that, but our long, dusty summers demand a lot of a system. It runs hard from June through September, often for months without a real break.
Age alone isn't a death sentence. A 14-year-old unit that's been serviced every year and still cools fine doesn't need replacing just because it hit a number. But once a system is past about 12 years, every repair decision changes, because you're weighing money against a unit that's closer to the end than the beginning. We've seen very well maintained systems run for more than 25 years and are still running to this day with minor issues.
Is it worth repairing an old AC, or should I just replace it?
Here's the quick math we use: multiply the age of the unit by the repair cost. If that number is over about $5,000, replacement is usually the smarter money. A $400 repair on a 12-year-old unit is $4,800, that's borderline. A $600 repair on a 15-year-old unit is $9,000, it would make sense to replace.
The other rule of thumb that many people live by: if a single repair costs more than half what a new system would, don't pour it into the old one. You're better off putting that money toward something that'll run for the next 15 years and cost less to operate while it does.
None of this replaces an actual look at your system. But if you're staring at a repair quote trying to decide, that's the framework we'd use sitting at your kitchen table.
Another factor that must be considered is how long you plan on being in a home. If you know you're going to move in the next 2 years, it would make more sense to just repair it 95% of the time. If you are going to be in the house for the long haul, replacement starts to sound a lot more enticing.
What are the signs my AC is on its way out?
A few things move the needle toward replacement:
- Your system needs repairs two or three summers in a row. One-off fixes happen but a pattern means parts are wearing out faster than you can stay ahead of them.
- Your power bills keep climbing even though you haven't changed how you use it. An aging system loses efficiency every year.
- It uses R-22 refrigerant. If your unit was made before about 2010, it likely runs on R-22, which hasn't been produced or imported in the U.S. since 2020. There's still some around, but the price has gone through the roof, so a refrigerant leak on an R-22 system can cost more to fix than the unit is worth. There's a reason R-22 is called liquid gold.
- Some rooms never get comfortable no matter what the thermostat says, and the system runs constantly trying to keep up.
One of these on its own isn't a verdict. Two or three together usually is.
How much does a new system cost, and will it lower my bill?
A new system in the valley typically runs from $12,000 to $20,000 depending on the size of your home, the efficiency level you choose, and whether you stick with straight AC or move to a heat pump. We have customers that invest north of $30,000 because of their home size and comfort desires.
Here's the part people don't always expect: a modern high-efficiency system can meaningfully cut your summer cooling costs compared to a 15-year-old unit, because efficiency standards have climbed a lot in that time. Idaho Power also offers rebates on qualifying high-efficiency equipment, and we handle that paperwork for you so the savings actually land in your pocket instead of getting lost in the shuffle. We're happy to run the numbers on what a replacement would cost to operate versus what you're spending now. Sometimes the new system's lower bills cover a real chunk of the difference over time.
So what should I do right now?
If your system is under 10 years old and cooling fine, do nothing but keep up with maintenance. If it's 12-plus years old and you've had a rough couple of summers, this mild week is a good time to have us take a look and give you a straight repair-or-replace answer, before the July heat forces the decision for you.
Either way, you'll get an honest assessment. Shane and Andy have talked plenty of folks out of replacing a unit that had good years left, and that's the way we'd want to be treated too.
We're a family-run shop covering the whole valley, Nampa, Caldwell, Meridian, Boise, and beyond. Give us a call at 208-455-5158 and we'll get you scheduled.