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.
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

NOAA nClimDiv, 1991–2020 normals
Book your AC tune-up in April, before homes here start needing cooling in May.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- 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.


