Why Is My Air Conditioner Running but Not Cooling?

Start with simple settings

Check thermostat mode and desired temperature, visible air vents and the accessible filter when allowed by manufacturer guidance.

Describe system behavior

Report whether air blows, whether outdoor equipment is running, when the issue began and any visible error code or unusual sound.

Avoid unsafe repair attempts

Do not open energized panels, touch refrigerant circuits or climb to access rooftop equipment. If you notice burning smells or an immediate hazard, stop using the system.

Provide details for diagnosis

Photos of accessible equipment and a short symptom timeline can help with an initial estimate; some repairs require an onsite diagnostic visit.

Information to prepare before calling

Write down the thermostat setting, whether the issue affects every room and whether cooling changed suddenly or gradually. Note unusual cycling, water at unexpected locations, ice you can see without touching equipment and any messages displayed by the system. A photo of an accessible equipment label can help identify the unit and its age, but it does not reveal the cause of a fault.

When to stop using the system

If you notice burning odors, smoke, electrical sparking or another immediate safety concern, switch the system off if safe and seek qualified assistance. Do not bypass protective controls, open electrical panels or attempt refrigerant repairs. Even when the equipment continues to blow air, a proper diagnosis may be needed to distinguish airflow problems from mechanical or electrical faults.

Before You Request an Estimate

• Check safe thermostat and filter settings
• Record symptoms and codes
• Submit safely taken equipment photos