When an older air conditioner breaks, the big question is whether to fix it or replace it. In the San Fernando Valley, where systems run hard for months, here is how to think it through.
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Things that point to replacing
- Age: Many central AC systems last roughly 12 to 15 years in Valley heat. Past that point, repairs tend to come more often.
- Old refrigerant: Systems that use R-22 (often installed before about 2010) are expensive to recharge. R-22 production and import in the U.S. ended in 2020, so it is scarce.
- Big repair bill: A failed compressor or leaking coil on an older system is often a sign to replace.
- Comfort problems: Hot rooms, high bills and constant cycling may mean the system is worn out or was never sized right.
A quick rule of thumb
Some technicians use the “$5,000 rule”: multiply the age of the system by the repair cost. If the number is over $5,000, replacement is usually worth considering. For example, a 14-year-old system with a $400 repair gives 5,600. It is only a starting point, not a hard rule.
What has changed with new systems
- Efficiency rules: Since 2023, new central air conditioners installed in the Southwest region, including California, must meet at least 14.3 SEER2.
- Newer refrigerants: New systems use newer, lower-impact refrigerants, and the equipment is designed around them.
- Heat pumps: A heat pump both cools and heats, and handles Valley winters well. Many homeowners replace an old AC and furnace with one system.
Permits and rebates
In the City of Los Angeles, replacing HVAC equipment generally requires a permit from the Los Angeles Department of Building and Safety (LADBS). A licensed contractor should pull it for you; be cautious of anyone who suggests skipping it. LADWP customers can check LADWP rebates for current offers on efficient equipment before buying.
Questions to ask before you decide
- Is the contractor licensed with the CSLB and insured? You can check any license at CSLB.ca.gov.
- Did they do a load calculation, or are they just matching the old size?
- What does the quote include (permit, ductwork, thermostat, haul-away)?
- What are the equipment and labor warranties?
- Can they give you both a repair price and a replacement price to compare?
Weighing the heating side too? See furnace repair or replace: how to decide.
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Near you: AC repair in North Hollywood · HVAC company in Winnetka · AC repair in North Hills · HVAC services in Mission Hills
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