10 Tips to Make Your Rooftop RV Air Conditioner Work Better

A properly functioning RV air conditioner is crucial for a comfortable camping experience. However, many people encounter issues with their rooftop RV air conditioners not cooling effectively. In this guide, we will explore common causes for poor cooling performance and provide ten tips to enhance the efficiency of your RV air conditioner.

Understanding the Causes

To address the cooling problem, it is important to understand the potential causes. Some common reasons for poor RV air conditioner performance include:

– Insufficient power supply for rooftop RV air conditioner.
– Dirty or clogged air filters in RV roof air conditioners.
– Lack of maintenance for RV air conditioning units.
– Refrigerant leak in rooftop RV air conditioner.
– Inadequate insulation for RV roof air conditioners.

Tips to Improve RV Air Conditioner Cooling

  1. Check Power Supply for Rooftop RV Air Conditioner
    1. Ensure that your RV air conditioner receives a proper voltage supply to function optimally. Inadequate voltage may lead to diminished cooling capacity.
    2. Use a surge protector when connecting your rooftop AC unit to shore power. This safeguards against voltage fluctuations and offers reliable power supply.
  2. Clean or Replace Air Filters in RV Roof Air Conditioners
    1. Clean air filters are essential for efficient cooling. Regularly inspect and clean them to remove dirt and debris that hinder airflow.
    2. If the filters are excessively dirty or damaged, consider replacing them to ensure maximum cooling performance.
  3. Regular Maintenance for Your RV Air Conditioner
    1. Clean the condenser coils of your rooftop AC unit periodically. Dust and debris accumulation on these coils reduces cooling efficiency.
    2. Lubricate the fan motors as recommended by the manufacturer, as it helps maintain smooth operation and improve performance.
    3. Check and calibrate the thermostat settings on your RV air conditioner to ensure accurate temperature control.
  4. Insulation Improvement for RV Roof Air Conditioners
    1. Identify and seal any air leaks in your RV. Proper insulation prevents cool air from escaping and warm air from entering, enhancing the effectiveness of your air conditioner.
    2. Apply weatherstripping and seal gaps around doors, windows, and vents to minimize heat transfer and maintain a comfortable interior temperature.
  5. Maximize Airflow in Your RV Air Conditioner
    1. Unblock air vents inside your RV to allow unrestricted airflow. Make sure furniture and other objects are not blocking the vents.
    2. Use fans strategically to circulate air within your RV, helping distribute cool air and maintain a consistent temperature throughout.
  6. Use Reflective Shades or Window Covers for Your RV
    1. Reduce heat gain by using reflective shades or covers on windows. This prevents sunlight from entering and heating up the interior of your RV.
    2. Reflective window covers provide additional insulation, reducing the workload on your air conditioner and enhancing cooling efficiency.
  7. Park in Shade or Use an Awning for Your RV
    1. Whenever possible, park your RV in shaded areas to shield it from direct sunlight. This helps minimize the heat load on your rooftop AC unit.
    2. Utilize an awning to provide shade over your RV and protect it from excessive heat, ensuring your air conditioner operates optimally.
  8. Optimize Temperature Settings for Your RV Air Conditioner
    1. Set the temperature to a comfortable level while being mindful of energy consumption. Lowering the temperature excessively can strain your AC unit and decrease cooling efficiency.
    2. Consider using programmable thermostats that allow you to program temperature changes based on your schedule, optimizing energy usage and maintaining a comfortable environment.
  9. Use External Venting for Your RV Air Conditioner
    1. Explore external venting options to efficiently expel hot air from your RV. This may involve using additional fans or venting systems to assist with heat removal.
    2. Proper venting is crucial for rooftop RV air conditioners, as it allows the unit to function optimally by expelling hot air and maintaining adequate airflow.
  10. Seek Professional Help for Your RV Air Conditioner
    1. If you notice any signs of malfunction, such as unusual noises, reduced cooling performance, or refrigerant leaks, it is advisable to seek professional assistance.
    2. Regular professional maintenance is essential for the longevity and optimum performance of your RV air conditioner.


In conclusion, Fogatti recommends implementing these ten tips to greatly enhance the cooling effectiveness of your rooftop RV air conditioner, including models such as the popular 15000 BTU air conditioner. Remember to place a high priority on regular maintenance and upkeep to ensure that your RV AC unit, including the 15000 BTU model, consistently delivers reliable and efficient cooling. With these improvements, you can enjoy your camping adventures in utmost comfort.


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