01. SYMPTOMS/02. STEP DIAGNOSTIC/03. EXPERT ACTION
SAFE DIY DIAGNOSTICS
TROUBLESHOOT GUIDE
STEP-BY-STEP AC DIAGNOSTIC CHECKS & 24/7 PRIORITY DISPATCH. VIEW DIRECTORY →
AC NOT COOLING
VENTS BLOWING WARM OR AMBIENT AIR
3 CHECKSMOST COMMON
SYSTEM WON'T TURN ON
NO SOUND OR POWER FROM INDOOR OR OUTDOOR UNITS
3 CHECKSHIGH PRIORITY
WATER LEAKING
PUDDLES OR DRIPPING AROUND INDOOR UNIT
2 CHECKSEMERGENCY
STRANGE NOISES
SCREECHING, GRINDING, OR HARSH BUZZING
2 CHECKSURGENT
WEAK AIRFLOW
COLD AIR BUT BARELY BLOWING FROM VENTS
2 CHECKSSTANDARD
ASCEND ARCHIVE // RESOLUTION DIRECTORY
TECHNICAL RESOLUTION DIRECTORY
Browse our diagnostic database either by mechanical failure profile or by Texas city and municipal coverage area.
35 TECHNICAL BLUEPRINTS
- 01AC Running But Blowing Warm Air
- 02Frozen AC Evaporator Coil (Ice on Pipes)
- 03AC Compressor Won't Turn On (Outside Unit Dead)
- 04AC Leaking Water Indoors (Attic or Closet Overflow)
- 05AC Short Cycling (Turns On and Off Every Few Minutes)
- 06Outside AC Fan Not Spinning But Unit Is Humming
- 07AC Runs Constantly But House Won't Cool Below 78°F
- 01Thermostat Screen Is Blank & AC Won't Turn On
- 02AC Keeps Tripping Circuit Breaker (Never Force Reset)
- 03AC Capacitor Failure: Symptoms, Dangers & Testing
- 04HVAC Float Switch Tripped (Emergency Pan Full of Water)
- 05Smart Thermostat Cooling Delay or Blowing Hot Air (Nest/Ecobee)
- 06Blown 3A/5A Control Board Fuse & Transformer Diagnosis
- 07AC Contactor Buzzing, Chattering or Pitted
- 01Weak Airflow From AC Vents (Barely Blowing)
- 02AC Smells Musty Like Dirty Socks ('Dirty Sock Syndrome')
- 03Burning Smell When Turning On Heating (Normal vs Hazard)
- 04Uneven Cooling in Two-Story Texas Homes (Hot Upstairs)
- 05High-Pitched Whistling or Howling From Return Air Vents
- 06Ductwork Sweating & Dripping Condensation in Attic
- 07Variable-Speed ECM Blower Motor Not Running or Surging
- 01Heat Pump Blowing Cold Air in Winter
- 02Gas Furnace Clicking But Won't Ignite (Flame Failure)
- 03Gas Furnace Running But Blowing Cold Air
- 04Heat Pump Covered in Ice: Normal Defrost vs Malfunction
- 05Auxiliary / Emergency Heat Running Constantly (High Electric Bill)
- 06Furnace Short Cycling (Shuts Off After 3 Minutes)
- 07Cracked Heat Exchanger Symptoms & Carbon Monoxide Safety
- 01Commercial Rooftop Unit (RTU) Not Cooling
- 02Commercial Chiller Low Pressure Alarm & Flow Switch Triage
- 03Commercial RTU Economizer Stuck Open or Closed
- 04Server Room / Data Center AC Overheating Emergency
- 05Commercial Refrigerant Leak Detection & EPA Compliance
- 06Tenant Finish-Out HVAC Balancing & VAV Box Troubleshooting
- 07Commercial Mechanical Preventive Maintenance & Failure Prevention
DIRECT MECHANICAL DISPATCH
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