An outdoor central air conditioning unit mounted on a concrete pad beside a blue-sided house at sunset.

AC Maintenance in San Bernardino, CA

Air conditioners here run from May through October, so April is the time for a tune-up. Tell us about your system, and a licensed contractor who covers San Bernardino County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
Aerial view of a gray outdoor air conditioning condenser unit mounted on a concrete pad next to a house with vinyl siding.

Six months of San Bernardino heat wears on your AC

Your air conditioner runs from May through October here, with summer afternoons averaging 99°F. That is six straight months where the system has to keep up, day after day, with little break to recover. The compressor and the fan motor carry that load the whole stretch.

A tune-up before the heat sets in checks the parts that strain most under long runs, like refrigerant charge and electrical connections, so a small problem gets caught while the system is still running fine, not on the afternoon it finally gives out.

6 months
May through October, your air conditioner is on duty
99°F
the average summer afternoon it cools against
13 hail events
in ten years, and hail bends the fins on outdoor coils
425 wind events
in ten years, and wind drives debris into outdoor units
Isometric cutaway illustration of a house interior showing ducted air handling equipment and duct runs through rooms, connected by piping to an outdoor condenser unit on a pad outside the wall.
Your air conditioner works hardest from June through September.

NOAA nClimDiv, 1991–2020 normals

Overhead view of a gray outdoor AC condenser unit on a concrete pad beside a mulched garden bed and a house with vinyl siding.

Book your AC tune-up in April, before homes here start needing cooling in May.

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec

A tune-up checks the refrigerant charge, cleans the coils, tests the capacitor and tightens the electrical connections.

California requires HVAC contractors to hold a state license.

The Contractors State License Board tests the contractor before issuing the license and keeps a record of it. The license belongs to the business, not to any single job, so the same license stands behind every visit that company makes, this one included.

For an air conditioner maintenance visit, that state license is what stands behind the person doing the work. If the technician opens the refrigerant lines to check charge or pressure, that part of the job also requires EPA Section 608 certification, a federal rule that applies in every state.

Sources: California Legislative Counsel · Contractors State License Board

What does AC maintenance include?
A technician checks the refrigerant charge, cleans the condenser coil, and tests the capacitor and contactor for wear. They also check the blower motor, inspect the ductwork for leaks, and change or clean the filter. Most visits also cover thermostat calibration and a look at the electrical connections, since loose wiring is one of the more common causes of a breakdown.
How often does an air conditioner need maintenance?
Once a year, ideally before the season it works hardest starts. In San Bernardino that means getting it checked before May, since the system runs from May through October with summer afternoons averaging 99°F. Going into that stretch with a clean coil and a tested capacitor gives the system a better chance of holding up through the heat.
Is AC maintenance worth it?
Yes, because a dirty coil or a weak capacitor forces the compressor to work harder, and that is what leads to a breakdown on the hottest day of the year. With six months of cooling season here and afternoons regularly near 99°F, a system that is not maintained has more hours to fail under load. Regular checks also catch small electrical issues before they become the reason the unit stops running entirely.