Stay Cool and Trouble-Free: 5 Common Split System Air Conditioner Problems and Their Solutions

By Digi2L - August 7, 2023

Blogs> Stay Cool and Trouble-Free: 5 Common Split System Air Conditioner Problems and Their Solutions

Stay Cool and Trouble-Free: 5 Common Split System Air Conditioner Problems and Their Solutions


Split system air conditioners offer efficient cooling solutions without extensive ductwork but can encounter common issues. This blog explores five frequent problems and their solutions to ensure uninterrupted comfort. Inefficient cooling is often due to dirty air filters or blocked condenser coils, reducing efficiency. Regular cleaning of filters and ensuring proper airflow around the outdoor unit is essential. Professional inspection is needed for refrigerant leaks or deeper issues. Strange noises like rattling or buzzing may indicate loose or damaged components. Turning off the unit, inspecting for loose parts, and consulting a technician can prevent further damage. Water leakage from the indoor unit can result from a clogged condensate drain line. Regular cleaning of the drain line and prompt address of leakage prevents water damage. Foul odors from mold or bacterial growth within the unit can be prevented by regularly cleaning air filters and disinfecting coils and unit interiors. Professional cleaning may be necessary for persistent odors. If the unit does not turn on, power supply issues or a malfunctioning thermostat could be the cause. Checking power supply, circuit breakers, and thermostat settings is crucial, with consultation of a technician for electrical issues. Regular maintenance and prompt issue resolution are vital for optimal performance. By following these solutions, uninterrupted comfort can be ensured throughout the year. Professional maintenance scheduling helps prevent major breakdowns, ensuring trouble-free cooling.


Split system air conditioners have revolutionized the way we stay comfortable in our homes, providing efficient cooling without the need for extensive ductwork. However, like any complex appliance, split ACs may encounter common problems that can disrupt their performance and affect our comfort. In this blog, we will explore five frequent issues faced by split system air conditioners and their simple solutions to ensure you stay cool and trouble-free all year round.

Air Conditioner Not Cooling Efficiently

Problem: One of the most common issues is when the old split AC fails to cool the room effectively. This can be caused by various factors, such as dirty air filters or blocked condenser coils.

Solution: Start by checking and cleaning the air filters regularly. Clogged filters restrict airflow and reduce cooling efficiency. Additionally, inspect the outdoor unit for any obstructions, ensuring proper airflow. If the problem persists, contact a professional technician to check for refrigerant leaks and perform a thorough inspection.

Strange Noises Emanating from the Unit

Problem: Unusual noises, such as rattling or buzzing, can be bothersome and indicate loose or damaged components within the old split AC.

Solution: Turn off the unit immediately and inspect for loose screws or parts. If you can’t identify the source of the noise, it’s best to contact a qualified technician or consider upgrading to new one and sell your old AC. Ignoring such noises can lead to more significant damage and costly repairs.

Water Leakage from the Indoor Unit

Problem: Water leakage from the indoor unit is a common issue and can be caused by a clogged or damaged condensate drain line.

Solution: Regularly inspect and clean the condensate drain line to prevent clogging. If you notice water leakage, turn off the unit and address the issue promptly. Seek professional assistance if needed to clear the drain line and prevent potential water damage.

Foul Odors Emitting from the Air Conditioner

Problem: Unpleasant smells from the AC can be due to mold or bacterial growth within the unit.

Solution: Regularly clean and maintain the air filters to prevent mold and bacteria buildup. Use appropriate cleaning solutions to disinfect the coils and the interior of the unit. If the odor persists, it’s advisable to seek professional assistance for a thorough cleaning and maintenance.

Air Conditioner Not Turning On

Problem: If your old air conditioner is not turning on, it could be due to various reasons, such as power supply issues or a malfunctioning thermostat.

Solution: Start by checking the power supply, circuit breaker, and thermostat settings to ensure they are functioning correctly. Replace the batteries in the remote control if needed. If the AC still doesn’t turn on, it could indicate more significant electrical issues, and it’s best to call a professional technician for diagnosis and repair.

Regular maintenance and addressing common issues promptly are essential to keep your split system air conditioner running smoothly and efficiently. By following these simple solutions, you can stay cool and comfortable, avoiding major breakdowns and costly repairs. Remember to schedule annual professional maintenance to ensure your AC operates optimally, providing you with the comfort you deserve throughout the year. Stay cool and trouble-free with your split AC!

Image by Freepik

× How can I help you?