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Jul 9 2025

How Does Summer Affect My HVAC System?

Summer brings longer days, sun-filled skies, and warm temperatures. But as you lean on your HVAC system to keep your home cool and comfortable, the season can be particularly challenging for your unit. At Van Drunen Heating & Air Conditioning, we’ve spent over five decades working with HVAC systems, and one thing we’ve observed is how much hotter weather and increased usage can affect performance. This blog explains the most common summer HVAC problems, how to prevent them, and what steps you can take to keep your system running efficiently all summer.  

Common Summer HVAC Problems

When temperatures soar, your HVAC system works harder than usual. This extra strain often leads to some common issues.

Reduced Efficiency

Your HVAC system’s efficiency is affected when outside temperatures climb. The hotter it is outside, the harder the system has to work to maintain your desired indoor temperature.

For instance, your outdoor condenser unit may struggle to release heat effectively during those sweltering days. Pair this with clogged air filters or dirty coils, and your system has to work even harder, pushing its efficiency further down.  

Increased Energy Bills

The harder your HVAC system works, the more energy it consumes. With longer operational times in summer, it’s no surprise that energy costs tend to spike during these hotter months. Something as simple as setting your thermostat too low can compound the problem, leading to unnecessarily high bills.  

Frequent Breakdowns

Prolonged use during summer also places wear on critical components like compressors, fans, and refrigerant lines. If your system hasn’t been properly maintained, the increased strain can result in issues ranging from diminished airflow to total breakdowns, leaving you stuck without cooling when you need it most.  

Preventative Maintenance for Your HVAC System

Preventative care is the number one way to protect your HVAC system from summer-related challenges. A little attention early on can save you both money and headaches down the road.  

Schedule Regular Check-Ups

Having a licensed HVAC professional inspect your system before summer begins is essential. Routine check-ups include cleaning components, checking refrigerant levels, and inspecting for wear and tear. These maintenance services help catch and fix small issues before they turn into expensive problems.

Replace Your Air Filters

Dirty or clogged air filters are one of the top contributors to HVAC inefficiency. During summer, air filters in your system collect dust, allergens, and other debris more quickly due to high usage. Make it a habit to replace or clean your filters at least once a month. Doing so will increase airflow, reduce system strain, and improve air quality in your home.  

Check Your Ducts

Any leaks or gaps in your ductwork can reduce airflow and efficiency, making your HVAC system work harder to cool your home. Regularly inspect your ductwork for visible issues or schedule a professional inspection. Sealing leaks can significantly boost your system’s performance.  

Tips for Using Your HVAC System Efficiently in Summer

If you want to stay comfortable while keeping costs down, there are some simple steps you can take to get the most out of your HVAC system this summer.  

Adjust Thermostat Settings

We get it; walking into a super-cool home on a hot day feels great. But, setting your thermostat too low can put unnecessary strain on your HVAC system. Instead, aim for a consistent, energy-efficient temperature setting. For most homes, 75 to 78 degrees Fahrenheit strikes the right balance between comfort and efficiency. You can also use a smart thermostat to fine-tune settings based on your daily schedule.  

Use Fans Strategically

Ceiling or portable fans don’t actually lower the temperature in a room, but they create airflow to make the air feel cooler on your skin. Using fans along with your air conditioning allows you to set your thermostat a few degrees higher while remaining comfortable.

Keep Windows and Blinds Closed

Sunlight streaming through your windows might look beautiful, but it can heat up your home quickly. During the hottest parts of the day, keep blinds, shades, or curtains closed to block out direct sunlight. Better yet, invest in thermal or blackout curtains to maximize the cooling benefit.

Maintain Proper Insulation

Good insulation is a must during summer, as it helps keep cool air in and hot air out. Check your home’s insulation in key areas like the attic, walls, and windows. Even small improvements here can make a big impact on your HVAC system’s performance.  

Stay Cool with Van Drunen’s Help

Summer challenges your HVAC system in ways no other season does, but with the right care and adjustments, you can ensure your home stays cool, and your energy bills stay manageable. By addressing common problems, sticking to a consistent maintenance schedule, and adopting energy-efficient habits, you’ll get the best performance from your system all season long.

At Van Drunen Heating & Air Conditioning, we’ve been helping families beat the summer heat for over 50 years. Whether you need preventative maintenance, HVAC repairs, or guidance on upgrading your system, our expert technicians always deliver service you can trust. Contact us today – we’re here to make sure your home stays comfortable, no matter how high the mercury rises. 

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