A system that short-cycles or won't kick on isn't a guessing game for us.
One phone call gets a certified tech moving toward your address.
If you're dealing with a compressor that hums but won't start, a blower motor that's seized, or a control board that's throwing an error code you can't decode, you already know the exact hour your system fails is never convenient — it's usually the hottest afternoon or the coldest night of the month.

Most HVAC repair problems give some warning before they turn into a compressor that hums but won't start, a blower motor that's seized, or a control board that's throwing an error code you can't decode — catching it early usually means a shorter, cheaper fix.
AAA Pro HVAC built its HVAC repair process around one idea: diagnose first, quote honestly, fix it right.
Every truck across Cotati, CA carries the tools and common parts specific to HVAC repair, so most calls finish in a single visit.

Every technician we dispatch holds state HVAC licensing and carries EPA 608 certification for refrigerant handling.
Dispatch tracks real-time technician location to route the nearest available crew to your Cotati address.
You get a quoted price after diagnosis, before any repair begins — no surprise line items.
Manifold gauges, combustion analyzers, and amp clamps ride in every van, not just the big jobs.
Every job starts with a real diagnosis, not a guess — here's the full scope of what our HVAC repair technicians handle across Cotati, CA.
A failing compressor usually announces itself with a hard start, a hum with no spin, or a breaker that trips on demand. This is one of the most requested HVAC repair calls we get across Cotati, CA.
We test capacitance against the rated microfarad value rather than replacing parts on a hunch. This is one of the most requested HVAC repair calls we get across Cotati, CA.
Electronic leak detectors and UV dye trace a slow leak back to the coil, line set, or schrader valve. This is one of the most requested HVAC repair calls we get across Cotati, CA.
A blower that hums but doesn't spin, or one that's pulling excess amperage, gets tested under load, not just visually inspected. This is one of the most requested HVAC repair calls we get across Cotati, CA.
Modern systems throw fault codes for a reason — we read them, cross-reference the manufacturer's service chart, and confirm the fault before replacing a board. Techs handling circuit board & control diagnostics carry the specific parts and tools this job calls for, not a generic kit.
Short cycling, systems that won't call for heat or cool, or a blank thermostat screen often trace back to a wiring fault rather than the unit itself. This is one of the most requested HVAC repair calls we get across Cotati, CA.

Describe the symptom — no cool, no heat, strange noise, tripped breaker — and dispatch routes the nearest available tech.
Your technician arrives in a stocked van, not an empty one.
You approve the flat-rate price before any repair work starts.
Most repairs finish same-visit with parts carried on the truck.

Compressor wouldn't kick on during a heat wave and the tech had it diagnosed — bad start capacitor — inside twenty minutes.
System was short-cycling every few minutes and two other companies just wanted to sell me a new unit.
Blower motor was pulling way more amps than it should and starting to smell hot.
Board threw an error code neither I nor the last technician could explain.

Sudden shutdowns usually trace to a tripped capacitor, a blown fuse, or a safety switch doing its job — a technician can isolate the cause during the first visit.
We'll give you an honest read on remaining lifespan and repair cost versus a new install quote, not a sales pitch either direction.
Our vans stock the capacitors, contactors, igniters, and control boards behind most common failures.
Trucks are staged across Cotati, CA, so response time depends on current call volume more than distance.
Diagnostic time is built into the quote, not billed separately.
We'd rather lose a job on price transparency than win one on a hidden fee.

Whether you're in the heart of Cotati or one of the surrounding communities, dispatch routes the closest available technician.
☎ Call +1-866-805-8548 for Cotati Service