HVAC Guides
How Often Should HVAC Be Serviced in Los Angeles?
Twice a year: a cooling tune-up in spring before the heat arrives, and a heating safety check in fall before the first cold nights. Between visits, air filters should be replaced every 1 to 3 months — more often during wildfire season or in homes near freeways.
Cal Climate Corp has performed seasonal maintenance across Burbank, Glendale, Pasadena, and 20+ Los Angeles cities since 1968 under California license #265735.
What is the right maintenance schedule for Southern California?
The standard schedule is one professional cooling tune-up per year and one heating inspection per year, with homeowner filter changes in between. Los Angeles systems carry a longer cooling season than the national average — air conditioners here commonly run from April into November — so the spring tune-up matters more than anywhere else on the calendar.
| Task | Frequency | Who |
|---|---|---|
| Replace air filter | Every 1–3 months | Homeowner |
| Cooling tune-up | Yearly (spring) | Professional |
| Heating safety check | Yearly (fall) | Professional |
| Coil cleaning | Yearly (with tune-up) | Professional |
| Refrigerant level check | Yearly (with tune-up) | Professional |
| Ductwork inspection | Every 2–3 years | Professional |
Why does the LA climate change the maintenance schedule?
Three Southern California conditions accelerate HVAC wear compared to milder climates: a cooling season that stretches past 200 days in the San Fernando Valley, airborne dust and wildfire smoke that load filters and coils faster, and mild winters that tempt homeowners to skip furnace checks entirely — leaving safety issues like cracked heat exchangers undetected for years.
- •Long cooling season. Valley temperatures above 90°F from June through September mean LA compressors log far more hours than the national average.
- •Dust and smoke. Filters in homes near freeways or during fire season can clog in 4-6 weeks instead of 3 months.
- •Skipped heating checks. Mild winters mean furnaces run rarely — but a furnace that runs 30 nights a year still needs its heat exchanger and carbon monoxide safety check annually.
What does a professional tune-up include?
A Cal Climate maintenance visit covers a complete system inspection: filter replacement, coil cleaning, refrigerant level check, electrical connection tightening, thermostat calibration, safety controls testing, and an efficiency performance report. The fall heating visit adds a gas furnace safety check with heat exchanger inspection and carbon monoxide testing.
What happens if you skip maintenance?
Three costs accumulate: energy waste (a dirty system runs longer for the same comfort), shortened equipment life (dust and strain are the main reasons systems fail before the 15-to-20-year mark), and voided warranties (most manufacturers require documented annual maintenance). Small faults compound — a $20 filter left in place can become a frozen coil, and a frozen coil can become a failed compressor.
Frequently Asked Questions
When is the best time to schedule a tune-up in LA?
Schedule the cooling tune-up in March through May, before the first heat wave, and the heating check in September through November, before the first cold evenings. Spring and fall are also when HVAC schedules are lightest, so appointments are easiest to get.
Does maintenance really lower energy bills?
Yes. Dirty coils, clogged filters, and low refrigerant force a system to run longer to deliver the same cooling. The U.S. Department of Energy attributes 5-15% of cooling energy use to dirty filters alone. A tune-up that includes coil cleaning, filter replacement, and a refrigerant check recovers most of that loss.
Do new systems need maintenance too?
Yes — and often contractually. Most manufacturer warranties require documented annual professional maintenance to stay valid. Skipping tune-ups on a new system can void coverage on exactly the components that are most expensive to replace.
Due for a Tune-Up?
Free estimates. Serving Burbank, Glendale, Pasadena, and 20+ cities across Los Angeles since 1968.