Ruud air conditioner indoor blower runs but air is not cold; outdoor unit fan runs but suction line is not very cold and home does not cool.

Safety first: Do not attempt to add refrigerant yourself. Handling refrigerant requires EPA certification and specialized tools.

• Step 1 – Check obvious airflow issues: Replace dirty filters and ensure indoor and outdoor coils are clean. Poor airflow can mimic low charge symptoms.
• Step 2 – Feel refrigerant lines: With the system running, the larger insulated suction line should feel cold and sweaty; the smaller liquid line should be warm. If both are near ambient temperature, charge may be low.
• Step 3 – Inspect for oil stains: Look around the Ruud condenser service valves, line set connections, and indoor coil for oily residue, which often indicates a leak.
• Step 4 – Shut system off if icing occurs: If you see ice on the suction line or evaporator coil, turn the system OFF and set thermostat to FAN ON to thaw. Running while frozen can damage the compressor.
• Step 5 – Call a licensed technician: A technician must locate the leak, repair it, evacuate the system, and recharge to Ruud’s specified charge (by weight or subcooling).