AC not cooling / warm air
Why Is My AC Not Cooling in Granbury, TX?
What you might be seeing
If your AC unit is blowing warm air, it often indicates a system malfunction that may require professional attention to diagnose and resolve.
Air blowing from vents feels noticeably warm or not cool.
Thermostat setting is lower than room temperature, but no cooling occurs.
Outdoor unit runs continuously but doesn't produce cold air inside.
Unusual noises or smells coming from the AC system.
Higher than normal energy bills without a change in usage.
Common causes
Clogged Air Filter
A dirty filter can restrict airflow, causing the coil to freeze or the system to struggle inefficiently.
Refrigerant Leak
Low refrigerant levels (especially R-22 in older Granbury homes) can prevent the system from cooling effectively.
Condensate Drain Line Clog
Blockages can trigger safety switches, shutting down the system to prevent water damage.
Thermostat Malfunction
An incorrect setting or faulty sensor may prevent the AC from receiving the proper cooling command.
Outdoor Unit Obstruction or Dirt
Debris or dirt on the condenser coils can hinder heat dissipation, reducing cooling capacity, especially in dusty areas.
Safe checks to try
Only try steps you are comfortable with — stop if anything feels unsafe.
Verify your thermostat is set to 'Cool' and the temperature is below the current room temperature.
Stop if: If the thermostat screen is blank or unresponsive, it may need new batteries or professional inspection.
Check the air filter for excessive dirt or blockage and replace it if necessary.
Stop if: If the filter is clean but airflow is still very weak, there might be a deeper issue.
Inspect the outdoor unit for any visible obstructions like leaves or debris around the condenser coils.
Stop if: If you see ice on the refrigerant lines or indoor coil, turn off the AC immediately to prevent damage.
Ensure all indoor vents are open and not blocked by furniture or drapes.
Stop if: If airflow remains poor even with clear vents, there could be ductwork issues.
When to call a professional
- You detect a burning smell or gas odor near the unit.
- The circuit breaker for the AC repeatedly trips.
- You observe ice on the refrigerant lines or indoor coil after turning off the unit.
- The outdoor unit is running, but the fan is not spinning.
- You suspect a refrigerant leak or issues with electrical components.
What to ask if you hire
- 1.Can you explain the potential causes of warm air and your diagnostic process?
- 2.What is the estimated cost for diagnosis and any recommended repairs?
- 3.Are there any warranty considerations for parts or labor?
- 4.Do you offer maintenance plans that could help prevent future issues?
- 5.How might Granbury's high humidity or attic heat load impact my system's performance?
- 6.If my system uses R-22, what are the options for repair or replacement given its phase-out?
What to look up next
- Ensure the technician clearly explains the problem and the proposed solution.
- Verify all costs, including parts and labor, are itemized before work begins.
- Confirm the technician is licensed and insured for HVAC work in Hood County.
- Ask for a written estimate and any applicable warranties.
- Review any manufacturer's documentation or permit requirements if a major repair or replacement is suggested.