In San Leandro an air conditioner may sit unused from fall to early summer, then run for hours on the first hot afternoon. A yearly tune-up gets it ready for that: the coils are cleaned so the system can move heat, the electrical parts are tested before they fail under load, the drain is cleared so water ends up outside, and the system’s performance is measured so small problems show up while they are still small.
What a tune-up covers
At the outdoor unit
- Clean the condenser coil and clear debris from inside the cabinet.
- Test the run capacitor against its rating and check the contactor for pitted or burned contacts.
- Measure the current draw of the compressor and fan motor, and tighten loose electrical connections.
- Check the fan blade, the motor bearings and the disconnect.
At the indoor unit
- Check or replace the filter and inspect the evaporator coil.
- Check the blower wheel and motor; a dirty wheel moves less air.
- Flush the condensate drain, test the float switch and check the secondary pan under attic units.
System performance
- Measure the temperature drop across the indoor coil.
- Check the refrigerant charge with gauges and temperature readings rather than by guesswork.
- Run a full cycle from the thermostat and confirm it starts and stops when it should.
What maintenance tends to find
| Finding | Why it matters | What usually happens next |
|---|---|---|
| Dirty or collapsed filter | Starves the coil of air; can freeze it | Replaced on the visit |
| Dirty outdoor coil | System runs longer and hotter on warm days | Cleaned on the visit |
| Low refrigerant charge | Means a leak somewhere in the system | Leak options explained before any repair |
| Partly blocked drain | Water overflow and a tripped float switch | Line flushed and switch tested |
| Weak capacitor or worn contactor | A common reason the AC will not start on a hot day | Replaced with your approval |
Worn parts are pointed out with readings, not a vague warning, and nothing is replaced without your approval. If the visit turns up a fault that needs more than a part swap, it becomes an AC repair with its own upfront price.
When to book
Spring and early summer are the best time. Late-summer and early-fall heat is when systems in San Leandro, San Lorenzo and Castro Valley work hardest, and a problem found in May is far easier to fix than one found on a hot September afternoon. Many households pair it with a fall furnace tune-up so both halves of the system are checked before their season.
What you can do between visits
- Check the filter every month or two during the cooling season and replace it when it looks grey.
- Keep plants, fences and stored items a couple of feet back from the outdoor unit.
- With the power off at the disconnect, rinse loose debris off the outdoor fins with a garden hose at low pressure. Never use a pressure washer; it bends the fins.
- Keep supply registers and return grilles open and unblocked.
- If water collects around the indoor unit or the system shuts off on its own, turn it off and call.
Cost and maintenance plans
An AC tune-up costs $79 to $149. The range depends on the type of system, how much cleaning the coils need and how easy the equipment is to reach; an air handler in a tight attic takes longer than one in a garage. Annual maintenance plans are available, so the visit can be scheduled each year without you having to remember it. Seniors and military households get 10% off.
Why it pays off
A clean coil and a correct charge let the system cool with less electricity and shorter run times. Testing capacitors, contactors and connections catches the parts most likely to fail on the first hot day. A clear drain protects the ceiling under an attic unit. And regular service records help if a warranty question ever comes up.
Local notes
Many post-war homes here have the air handler or ducts in the attic, where a clogged drain line can go unnoticed until water marks the ceiling below, so the drain gets extra attention on every visit. Outdoor units squeezed into narrow side yards pick up leaves and garden debris, and units in sunny spots on hillside lots work harder on warm afternoons. If dust and allergies are a concern, ask about indoor air quality options during the visit.