The short answer
Most AC breakdowns in East Palo Alto come from parts that sat unused all winter, such as capacitors, contactors, clogged drains and dirty coils. We find the actual cause, explain it in plain terms and fix it, or tell you honestly when the system is not worth repairing.
Air conditioners in East Palo Alto lead an odd life. They sit idle through the cool, damp months, then get asked to work hard for a handful of warm weeks, often with little warning. Problems that built up quietly over the winter tend to show themselves on the first hot afternoon: a fan that hums but will not spin, a vent pushing room-temperature air, a puddle under the indoor coil. Our technicians come up from Los Altos, about eight miles to the south, to diagnose and fix cooling systems in homes throughout the city and its San Mateo County neighbors. Below is a practical look at what usually goes wrong here, what you can safely check yourself before calling, and how a repair visit with us actually unfolds.
Five things to check before you book a visit
Some cooling complaints have simple causes that take a minute to rule out. None of these steps require tools or opening any panels, and they can save you a service call.
- Confirm the thermostat is set to cool, the set point is below room temperature and the batteries, if it uses them, are fresh.
- Look at the breaker panel for a tripped breaker marked for the AC, furnace or air handler, and reset it only once.
- Pull the air filter. A filter clogged with dust and lint can choke airflow enough to freeze the indoor coil.
- Walk outside and make sure the condenser is not buried in leaves, weeds or stored items along the fence.
- Check that the indoor unit's service switch, which often looks like a light switch near the furnace, has not been flipped off.
What we find most often in local homes
Because these systems rest for months at a time, the most common failures are electrical parts that weaken between seasons. A run capacitor that has lost strength lets the compressor or fan struggle to start, and a pitted contactor can stop the outdoor unit from switching on at all. These are usually quick fixes once they are identified correctly.
Airflow problems are a close second. Older attics and crawlspaces in the city often hold duct runs with loose connections, and a dirty evaporator coil or blower wheel cuts the volume of air reaching the rooms. When airflow drops far enough, the coil can ice over, and the system blows warm air while the meter keeps running.
Then there are condensate issues. The indoor coil pulls moisture from the air, and that water has to drain somewhere. Algae and debris build up in the line during the off season, and when it backs up you may see water near the furnace closet or a safety switch that shuts the system down.
Refrigerant leaks deserve a real diagnosis
If your system is low on refrigerant, it has a leak. Refrigerant is not consumed like fuel, so simply topping it off only buys time while the problem continues. We test for the leak location, whether it is at a fitting, a valve core or the coil itself, and then explain whether the fix is a small repair or a sign that a major component is failing.
Older systems that use R-22 refrigerant are a special case. That refrigerant is no longer produced, so recharging an old unit is costly and rarely sensible. If your equipment is in that category, we will tell you directly and lay out the options.
How a repair visit works
We start by asking what you noticed and when, because the order of symptoms often points to the cause. Then we check the system from the thermostat out to the condenser: voltage, amperage draw, refrigerant pressures and temperatures, airflow and the drain. You get a clear explanation of what failed, why it likely failed and what it will take to fix, and we wait for your go-ahead before doing the work.
If the honest answer is that the system has reached the end of its useful life, we say so and describe what a replacement would look like. Many owners at that point weigh a heat pump, since it can cool in summer and replace an aging furnace at the same time. Working equipment never has to be removed under Air District rules, so that decision stays entirely yours.
Keeping the next warm spell uneventful
A short tune-up in spring, before the first warm week, catches weak capacitors, dirty coils and blocked drains while they are still easy to fix. Between visits, changing the filter on schedule and keeping a clear space around the outdoor unit does most of the work. Homeowners in nearby Menlo Park, Palo Alto and Atherton follow the same simple routine with good results.
More services in East Palo Alto
- Heating Repair in East Palo Alto
- Heat Pump Installation in East Palo Alto
- AC Installation in East Palo Alto
- Furnace Repair in East Palo Alto
