When To Schedule AC Maintenance in San Diego

In Southern California, where temperatures can climb well into the 90s during summer and stay mild through winter, many homeowners wonder when to schedule AC maintenance in San Diego. 

While AC systems here don’t face freezing winters like in other parts of the country, they still need annual maintenance to operate efficiently and avoid mid-season breakdowns. Here’s what you need to know about the best times of year to schedule an AC tune-up and why regular service is so important for homes in Southern California.

Best Time of Year for AC Maintenance in San Diego

Spring is the ideal season to schedule your air conditioning tune-up — typically between March and May, before the first heatwaves of summer hit. Here’s why:

• Avoid emergency breakdowns in summer: A spring checkup gives your system a head start and prevents failures when temperatures soar.

• Faster service and flexible scheduling: HVAC companies are less busy in spring, so you can get a convenient appointment.

• Prep your system for heavy usage: San Diego’s inland areas like Lakeside, Santee, and La Mesa can hit triple digits — you want your HVAC system ready to handle it, with minimal AC repairs.

Is Fall a Good Time for Air Conditioner Maintenance Too?

Yes, if you didn’t get to it in spring, fall is your next best window — especially if your system worked hard through summer. Late September through early November is a great time to:

• Clean filters and coils clogged with dust and debris

• Check refrigerant levels after peak usage

• Identify wear and tear before it worsens over winter

Should You Get Air Conditioning Maintenance Twice a Year?

In most homes, once a year is enough, but you may benefit from biannual maintenance if:

• You live near the coast (like Encinitas or Point Loma), where salt air can cause corrosion

• You own a large or multi-zone system

• You have poor Indoor Air Quality or you have pets or allergies that require more frequent filter changes

• Your AC system is over 10 years old

If that sounds like your home, a Preventative Maintenance Agreement (PMA) might make sense — and could include both spring and fall service. Contact us to learn more about our PMA plans.

What Happens If You Skip an Air Conditioner Maintenance?

According to the U.S. Department of Energy, regular air conditioner maintenance can improve system efficiency, lower energy bills, and help prevent costly breakdowns. Skipping AC maintenance in San Diego may not cause immediate failure, but it does increase the risk of:

• Reduced cooling performance and airflow

• Higher energy bills

• Premature equipment breakdowns

• Voiding manufacturer warranties

If your system fails in August, you may face long wait times and costly emergency repairs — all of which could have been avoided with a quick spring tune-up.

AC Maintenance for Inland vs. Coastal Homes

Where you live in San Diego County can impact how often your AC needs service.

• Coastal homes (La Jolla, Del Mar, Oceanside): Salt in the air can corrode coils and electronics. Maintenance helps prevent damage and prolong lifespan.

• Inland homes (El Cajon, Alpine, Poway): Hotter temperatures and more frequent AC use increase wear and tear, making annual tune-ups critical.

Schedule Your Air Conditioning Maintenance Now

Still wondering when to schedule AC maintenance in San Diego? The best time to schedule your central AC maintenance is before you need it. At Carini Home Services, we make it easy with fast scheduling, flexible maintenance plans, and certified HVAC technicians who know San Diego homes inside and out.

Whether you’re in Carmel Valley, Chula Vista, or Mission Hills, our team is ready to help you avoid surprise breakdowns and keep your system running at peak performance.

Looking for a quote on an AC installation in San Diego? Call Carini Home Services now to schedule a free estimate on a new Air Conditioning system. Our Design Specialists will go over options, financing and rebates, helping you find the perfect solution for your home and budget.
Schedule your tune-up with Carini today →

Frequently Asked Questions About AC Maintenance

How often should an AC system be serviced?

Most homes in San Diego benefit from annual AC maintenance, ideally in spring before peak summer usage. Homes near the coast or with older systems may need service twice a year.

How much does AC maintenance cost?

AC maintenance typically ranges from $79 to $189 per visit, depending on the system and provider. Carini offers Preventative Maintenance Agreements that save you money year-round.

What does AC maintenance include?

A professional AC tune-up usually includes filter replacement, coil cleaning, refrigerant checks, thermostat calibration, and inspection of key components like the condenser and evaporator.

Is a broken AC a maintenance emergency?

In extreme heat or for vulnerable occupants, a broken AC can be an emergency. If your system fails during a heatwave, it’s best to call for emergency service immediately.

How long does AC maintenance take?

Most AC tune-ups take 60 to 90 minutes, depending on system complexity and accessibility. Larger or multi-zone systems may take longer.

Is AC maintenance really worth it?

Yes — routine maintenance helps extend the life of your system, reduce energy bills, and prevent costly breakdowns. It also keeps your warranty valid.

How often should AC filters be changed?

Change your air filters every 1–3 months, depending on your home’s air quality, pets, allergies, and system usage. During summer in San Diego, monthly changes are often ideal.

Are AC maintenance plans worth it?

If you want priority scheduling, discounts, and peace of mind, AC maintenance plans are absolutely worth it — especially for older systems or high-use households.