Your AC Is Running But Not Cooling the House: What Is Going On?
If your AC isn't cooling, the first warm days of spring can make the problem obvious fast. The system may turn on. The fan may run. You may hear air moving through the vents. But the house still feels warm.
That does not always mean you need a major repair. Some causes are simple. Others need a trained HVAC technician.
GE Heating & Air has helped Denver homeowners with heating and cooling issues for more than 20 years. Here is what to check first and when to schedule a service.
Is Your AC Not Blowing Cold Air? Check These Things First
If your AC not blowing cold air is the main problem, start with the simple checks.
First, look at your thermostat. Make sure it is set to cool. Then check the temperature setting. Set it a few degrees lower than the current room temperature. Also check the fan setting. Auto is usually the better choice for cooling. If the fan is set to on, it may keep blowing air even when the AC is not actively cooling.
Next, check the air filter. A dirty filter can block airflow and make your system work harder. If the filter looks gray, dusty, or packed with debris, replace it.
Then check the breaker. If part of the system has lost power, the indoor fan may run while the outdoor unit stays off. Resetting a tripped breaker may help once. If it trips again, stop and call a technician.
These checks are free and take only a few minutes. If your AC still is not cooling, the issue may be inside the system.
Why Isn't My AC Working? Blocked Vents and Airflow Issues
If you are asking why your AC isn't working, airflow is a good place to look.
Your AC needs clear air movement to cool your home. Closed vents, blocked return grilles, and furniture in front of vents can all cause uneven cooling. The system may be running, but cold air may not be moving where it needs to go. Follow these steps:
- Walk through your home and check each room.
- Make sure supply vents are open
- Move rugs, curtains, or furniture away from vents
- Clear boxes or storage from return grilles
- Check that doors are not blocking airflow
- Look for rooms that stay warmer than others
Do not close several vents to force air into one room. That can increase pressure in the duct system and make cooling problems worse.
If airflow looks clear and the house still feels warm, call GE Heating & Air at (303) 252-3185. You can also use contact us to schedule a service.
For cooling repairs, maintenance, and system checks, visit air conditioning services.
Cooling Problems Caused by Refrigerant Leaks
Some cooling problems come from low refrigerant. That is not something a homeowner should try to fix.
Your AC uses refrigerant to move heat out of your home. If refrigerant is low, there may be a leak. Adding more refrigerant without fixing the leak will not solve the problem for long.
Signs of a refrigerant leak may include:
- Warm air from the vents
- Ice on refrigerant lines
- Hissing sounds near the system
- Long cooling cycles
- Higher energy bills
- Weak cooling on mild days
Running the AC with low refrigerant can strain the compressor. That can turn a repair into a much more expensive problem.
A licensed technician should inspect the system, find the leak, and handle refrigerant safely. GE Heating & Air can test the system and explain your options before work begins.
Air Conditioner Running Weak? Other Causes to Know
If your air conditioner's weak performance continues after basic checks, there may be another issue.
A dirty outdoor condenser coil can keep the system from releasing heat. Grass, leaves, dirt, and cottonwood can collect around the outdoor unit. Keep at least 2 feet of clear space around it. Do not spray the unit with high pressure, since that can damage the fins.
A frozen evaporator coil can also reduce cooling. You may notice weak airflow, warmer air, or ice on the system. If you see ice, turn the AC off and call for service.
An undersized system can also struggle, especially during hot Denver afternoons. If the AC runs all day and never reaches the set temperature, a technician should check system size, airflow, ductwork, and equipment condition.
Your AC isn't cooling for a reason. Start with the thermostat, filter, breaker, vents, and return grilles. Then call GE Heating & Air if the problem continues.
Use contact us to schedule a service, or call (303) 252-3185 for help from a local Denver HVAC team. GE Heating & Air offers free estimates, financing options, and full-service heating and cooling support.