A 26-Year-Old System: Repair or Replace?

A homeowner's air quit on a 26-year-old system. The owner walked them through repair versus replacement instead of writing up replacement as the only option. Old equipment on a hot day is when homeowners get their worst quotes. The house is hot, the part is obsolete, and the easiest sentence in the trade is “it’s not worth fixing.” Sometimes that sentence is true. It is only true after someone looks at the heat exchanger or the compressor and prices the alternative. Twenty-six years in Las Vegas is a long life. We will not pretend a system that age owes you another decade. We also will not skip the diagnosis because the year on the data plate is embarrassing. You should leave the call knowing what failed, what a repair costs, and what a replacement includes. If you are in Southern Highlands, Anthem, or an older Spring Valley house and the system is original, this is the conversation to expect from us. Age starts it. The measurements finish it.

What's different about a 26-year-old system

A system that age was installed in the late 1990s or around 2000. That usually means:

• R-22 refrigerant. Most residential systems from that era were built for R-22. US production and import of R-22 ended January 1, 2020 (EPA), so any repair that needs a recharge depends on recovered or reclaimed supply. A leak repair costs more than it would on a newer system.
• A lower efficiency rating. The federal minimum for new central air conditioners went from 10 SEER to 13 SEER in 2006. A system from the late 1990s was built to the older standard, which matters in a city where cooling runs most of the year.
• Parts that are harder to find. Motors and capacitors usually have universal replacements. Some controls and original coils don't.

None of that settles the decision. It's what goes into the comparison.

What a fair repair-or-replace conversation includes

1. The failed part, named and measured. A capacitor, a contactor or a fan motor on an old system is still a repair. A grounded compressor or a leaking coil is a bigger question.
2. The repair price and the replacement price, side by side.
3. What else is close to failing. On an old system, we'll tell you what we see wearing out, so you're not surprised next summer. That doesn't make it a reason to replace today.
4. Time to decide. If the repair gets you through the season and you'd rather plan a replacement than rush one, that's a reasonable choice.

Questions to ask on any old-system call

• What failed, and what did you measure?
• Does this repair need refrigerant? If so, what kind and how much?
• What would you check on the indoor side before quoting a replacement?

For the decision itself, see repair or replace a 20-year-old AC. For replacement details, see AC replacement in Las Vegas. If you've already been told to replace, see HVAC second opinion.

Sources

• EPA, Phaseout of Class II Ozone-Depleting Substances (HCFC-22 production and import ended Jan 1, 2020): https://www.epa.gov/ods-phaseout/phaseout-class-ii-ozone-depleting-substances
• US DOE, 2006 central AC minimum efficiency raised from 10 to 13 SEER (energy conservation standards for residential central air conditioners, effective Jan 23, 2006): https://www.energy.gov/eere/buildings/central-air-conditioners-and-heat-pumps