When to Replace vs Repair Your AC Unit: A Peninsula Homeowner's Guide
The 50% Rule
A common rule of thumb: if a repair costs more than 50% of a new system, replacement often makes more sense. But that's not the whole picture for Peninsula homeowners.
Age Matters
AC systems typically last 10-15 years in our mild Peninsula climate. If your unit is:
- Under 8 years: Repair usually makes sense
- 8-12 years: Consider repair costs carefully
- Over 12 years: Start thinking about replacement
Peninsula-Specific Factors
Our coastal climate is relatively mild compared to inland areas. This means:
- Your AC may last longer than average
- Efficiency gains from new units may be less dramatic
- Heat pump hybrids are worth considering
Signs It's Time to Replace
- Frequent repairs - More than 2-3 per year
- R-22 refrigerant - This is phased out and expensive
- Rising energy bills - Older units lose efficiency
- Uneven cooling - Hot spots that won't go away
- Strange noises - Grinding, squealing, or banging
When Repair Makes Sense
- Single component failure - Capacitor, contactor, etc.
- Minor refrigerant recharge - If no leak present
- Thermostat issues - Often inexpensive to fix
- Duct problems - Separate from the AC unit itself
Get a Professional Opinion
We're happy to assess your system and give you an honest recommendation. No pressure - we'll explain your options and help you make the right choice for your home and budget.
Peninsula Homeowner Takeaway
The most useful next step is to connect the advice to the exact symptom in your home: when it happens, which rooms are affected, and whether the equipment starts normally.
Photos of the thermostat, filter, outdoor unit, furnace or air handler, and model plate can make a service call more efficient.
Use the article as a starting point, not a final diagnosis. HVAC symptoms can come from controls, airflow, electrical parts, ducts, refrigerant behavior, or equipment age.
If a simple filter, thermostat, or airflow check does not change the symptom, document what the system does before calling for service.
Best next diagnostic route
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