🚬
AC Not Cooling or Blowing Warm Air
This is the most common call we receive in Fresno summers. Your system is running but the air
coming out feels lukewarm or even room temperature. The problem is almost always refrigerant-related
or a coil issue — but the root cause matters because simply adding refrigerant without fixing a
leak is money wasted.
Common Causes:
Low refrigerant from a leak • Dirty condenser or evaporator coil •
Failing compressor • Stuck metering device • Restricted airflow
❌
AC Won't Turn On
You set the thermostat, hear a click, but nothing happens. Or the outdoor unit starts but the
indoor air handler doesn't respond. These electrical failures are usually quick and inexpensive
to fix — but need to be diagnosed correctly since forcing a faulty system can burn out more
expensive components.
Common Causes:
Bad capacitor or contactor • Blown fuse or tripped breaker •
Faulty thermostat wiring • Control board failure • Disconnected safety switch
📵
Strange Noises (Banging, Rattling, Squealing)
Your AC should run quietly. Any new sound — banging, rattling, high-pitched squealing, hissing,
or grinding — is a sign something is mechanically wrong. Ignoring it almost always leads to a
larger failure. A rattling noise that costs $80 to fix today can turn into a $1,400 motor
replacement if left alone.
Common Causes:
Loose fan blades or blower wheel • Failing bearings in the motor •
Debris in outdoor unit • Refrigerant hissing from a leak • Loose cabinet panels
💧
AC Leaking Water
Water near your indoor air handler, ceiling stains near vents, or water overflowing from the
condensate drain pan are signs of a drainage problem. Left unchecked, this causes mold growth,
wood rot, and ceiling damage that can cost thousands to remediate. We clear the drain line and
inspect the entire drainage system.
Common Causes:
Clogged condensate drain line (most common) • Frozen evaporator coil that thawed •
Cracked or overflowing drain pan • Low refrigerant causing coil to freeze
💨
Poor Airflow — Weak or Uneven Cooling
Some rooms are comfortable while others feel stuffy and hot. Or the air coming from every vent
feels weak, even when the system is running. Poor airflow reduces efficiency and puts extra strain
on your compressor — one of the most expensive components in the system.
Common Causes:
Severely clogged air filter • Blocked or collapsed ductwork •
Failing blower motor or wheel • Leaky duct connections •
Undersized return air intake
❄️
AC Freezing Up (Ice on Lines or Unit)
Paradoxically, an air conditioner can ice over in 110° Fresno heat. When ice forms on the
refrigerant lines or outdoor unit, the system loses efficiency rapidly and can damage the
compressor if not addressed. Never chip ice off the unit — let us diagnose the underlying cause.
Common Causes:
Low refrigerant charge • Severely restricted airflow from dirty filter •
Blocked evaporator coil • Malfunctioning blower fan •
Running AC when outdoor temps are very low
🔄
AC Short Cycling (Turns On & Off Rapidly)
If your AC turns on for a few minutes, shuts off, then starts again every 5–10 minutes instead
of running a full cooling cycle, it's short cycling. Besides failing to cool your home properly,
this dramatically increases wear on your compressor and spikes your energy bill.
Common Causes:
Oversized system (very common in Fresno) • Low refrigerant •
Dirty condenser coil causing high head pressure • Bad capacitor •
Refrigerant overcharge
📈
High Energy Bills — AC Running Constantly
If your electricity bill jumps significantly without a change in your habits, or your AC runs
all day without reaching the set temperature during typical Fresno summer weather, your system
is working harder than it should. This almost always means an efficiency problem that's
costing you money every single day it goes unaddressed.
Common Causes:
Dirty condenser coils • Low refrigerant • Aging, degraded compressor •
Air leaks in ductwork • Undersized system for the home • Poor insulation
💹
Thermostat & Control Issues
Sometimes the problem isn't the AC itself — it's the thermostat or control board telling
the system what to do. A miscalibrated thermostat, wiring issue, or failing control board
can make a perfectly functional AC behave erratically. We test the entire control circuit,
not just the mechanical components.
Common Causes:
Miscalibrated or failing thermostat • Low thermostat batteries •
Incorrect thermostat placement (near heat source) • Control board failure •
Wiring short or disconnected wire