LA summers don't ease in. One week it's 72, the next it's 105 in the Valley and your AC is running 14 hours straight. That's not the time to find out your system has a problem.
We've been fixing air conditioners across Los Angeles since 1984. After 40+ years and tens of thousands of service calls, we can tell you: most AC breakdowns in July and August started showing symptoms in March and April. Here's what to look for right now.
Put your hand up to your vents. If the air feels more like a suggestion than actual airflow, something's off. The most common causes are a clogged filter (cheap fix, under $20), a failing blower motor ($300-$600 to replace), or ductwork leaks that are dumping cooled air into your attic.
The uneven version is sneakier. One room is freezing while the bedroom feels like a sauna. That usually points to duct issues or a system that's losing capacity. Either way, it's going to get worse when you're asking it to cool your house from 100+ degrees down to 74.
Your AC should hum. That's it. If you're hearing grinding, squealing, banging, or clicking, your system is telling you something specific:
None of these fix themselves. They all get more expensive the longer you wait. A $150 bearing replacement turns into a $700 motor replacement in about 6 weeks.
Pull up your DWP or SoCal Edison bill from the same month last year. If you're paying 20-30% more with the same usage habits, your AC is working harder than it should. Common culprits: refrigerant leak (the system runs constantly but never quite gets there), dirty condenser coils (the outdoor unit can't dump heat efficiently), or a compressor that's on its last legs.
A proper AC tune-up costs $89-$150. That's a lot cheaper than burning an extra $40-$60 per month all summer on a system that's struggling.
If your AC blows cool for 5-10 minutes then shuts off, restarts, shuts off again, that's short cycling. It wears out the compressor fast and never actually cools your house. The thermostat thinks the job isn't done, so it keeps restarting the cycle. Your compressor hates this.
Warm air coming from vents when the system is set to cool usually means low refrigerant. And low refrigerant means there's a leak somewhere. Topping it off without finding the leak is like putting air in a tire with a nail in it.
Water pooling around your indoor unit means the condensate drain is clogged. Not urgent, but mold grows fast in LA humidity. Ice on the refrigerant lines outside means airflow or refrigerant problems. And if your vents smell musty or like something's burning, shut the system off and call for an inspection. Musty means mold in the ducts. Burning means an electrical component is overheating.
Every HVAC company in LA is slammed from June through September. Wait times for repairs go from same-day to 3-5 days. Parts that are in stock in March are backordered in August. And emergency weekend calls cost 1.5x to 2x the normal rate.
If you noticed any of these signs, now is the time. A spring tune-up takes about an hour, catches 90% of these problems, and costs a fraction of an emergency repair in the middle of a heat wave. We offer same-day AC service across Greater Los Angeles, and we've been doing this longer than most companies have existed.