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Late-Summer Heat Wave Survival: How to Keep Your Ductless System Running Efficiently

August 15, 2025

Late-Summer Heat Wave Survival: How to Keep Your Ductless System Running Efficiently


Late summer often brings unexpected heat waves that can put your ductless system to the test. While these compact, efficient units are designed to handle hot weather, extreme conditions can push them to work harder, potentially reducing efficiency and comfort. By taking a few smart steps, you can ensure your ductless system keeps running smoothly, even during the hottest days.

1. Keep Filters Clean
One of the easiest and most effective ways to maintain your ductless system’s performance is to clean or replace the filters regularly. During a heat wave, airflow is crucial, and clogged filters can cause your system to work overtime, increasing wear and energy consumption.

2. Use the Right Temperature Settings
Setting your system to the lowest possible temperature won’t cool your home faster - it will just make the unit work harder. Instead, set your ductless system to a comfortable and consistent temperature, such as 24–25°C (75–77°F), and use its energy-saving or eco mode if available.

3. Minimize Indoor Heat Sources
During extreme heat, every bit of additional warmth can impact your system’s efficiency. Avoid using heat-generating appliances like ovens, stoves, and dryers during the day. Opt for cooking outdoors, using a microwave, or running appliances in the cooler evening hours.

4. Maintain Outdoor Unit Clearance
Your ductless system’s outdoor unit needs proper airflow to release heat effectively. Ensure there’s at least two feet of clearance around it, free from plants, debris, or obstructions. Providing shade without blocking ventilation can also help improve efficiency.

5. Schedule Preventive Maintenance
Even with regular homeowner care, professional maintenance is essential. A skilled HVAC technician can check refrigerant levels, clean coils, inspect electrical components, and ensure your system is ready to handle extreme weather without unexpected breakdowns.

Stay Cool, Save Energy, and Extend System Life
When you take these proactive steps, your ductless system will not only keep you comfortable but also operate more efficiently , saving energy and reducing wear.

Don’t let a late-summer heat wave catch you off guard. The professional and highly skilled team from Maple Air is here to help with all your HVAC needs, from routine maintenance to emergency repairs and new installations. We have the expertise and tools to keep your home cool, comfortable, and efficient - no matter how high the temperature climbs. Call Maple Air today to schedule your ductless system service and enjoy peace of mind all season long!


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