Summer should be about backyard barbecues, family vacations, and enjoying the sunshine, not sweating through another sky-high energy bill.
If your air conditioner seems to run nonstop but your home still feels warm and uncomfortable, you're not alone. Many homeowners struggle to keep their houses cool during the hottest months of the year, especially when heat is sneaking in through windows, doors, attics, and poorly insulated walls.
The good news is that there are several ways to keep your home cooler without constantly lowering the thermostat. Some solutions are quick and inexpensive, while others can improve your home's comfort and energy efficiency for years to come.
RetroFoam of Michigan has more than 20 years of experience insulating thousands of homes across the lower peninsula. While we know foam insulation will create the air barrier you need to keep your home cool in the summer, we also know some tricks outside of using your AC unit.
Let's look at 10 practical ways to keep your house cool in summer and reduce the strain on your air conditioning system.
• Closing blinds and curtains can help reduce heat entering through windows.
• Ceiling fans should rotate counterclockwise during summer months.
• Exhaust fans can remove hot, humid air from inside the home.
• Shade trees and landscaping can reduce solar heat gain.
• Weatherstripping helps prevent warm outdoor air from leaking indoors.
• Proper insulation keeps conditioned air inside and summer heat outside.
• Improving your home's building envelope can lower cooling costs and increase comfort.
• Air sealing and insulation upgrades can improve comfort and lower cooling costs.
• High cooling bills are often a symptom of insulation and air leakage problems.
When outdoor temperatures soar, your home doesn't have to feel like an oven. These practical cooling tips can help you stay comfortable while reducing the strain on your air conditioning system.
One of the simplest ways to keep your house cool without air conditioning is to block sunlight before it enters your home.
Sunlight streaming through windows can significantly increase indoor temperatures, especially in rooms with large south-facing or west-facing windows. Closing blinds, curtains, or shades during the hottest part of the day can help reduce heat gain and improve comfort.
This small habit can make a surprisingly big difference.
If there are rooms in your home that aren't used regularly, consider keeping the doors closed during the day.
This helps keep conditioned air focused in the areas where your family spends the most time. If your HVAC system allows it, closing vents in those spaces may also help, though it's best not to close too many vents throughout the house.
Need a quick cooling boost?
Place a bowl of ice or frozen ice packs in front of a fan. As the fan blows air over the ice, it creates a cooler breeze that can help make a room feel more comfortable, according to Apartment Therapy.
It's not a replacement for air conditioning, but it can provide temporary relief during especially hot weather.
Your bedding may be contributing to those uncomfortable summer nights.
Heavy sheets and blankets tend to trap heat. Replacing them with breathable cotton sheets and lighter bedding can help you stay cooler and sleep more comfortably.
Many homeowners don't realize their ceiling fan direction should change with the seasons.
During the summer, ceiling fans should rotate counterclockwise at a higher speed. This pushes air downward and creates a cooling breeze that helps your body feel cooler, according to the U.S. Department of Energy.
As a result, you may be able to raise the thermostat a degree or two without sacrificing comfort.
Bathroom, laundry room, and kitchen exhaust fans can help remove excess heat and humidity from your home.
After cooking, showering, or doing laundry, run these fans to help move warm, moist air outdoors where it belongs.
Removing humidity can often make your home feel cooler even if the temperature remains the same.
Strategic landscaping can help reduce heat gain naturally.
Trees and large shrubs can block direct sunlight from hitting your home, especially on the south and west sides. Over time, this can help reduce indoor temperatures and lessen the workload on your air conditioner.
The added curb appeal doesn't hurt either.
Your oven can quickly turn a comfortable kitchen into one of the hottest rooms in the house.
Instead of using the oven during the afternoon, consider grilling outdoors or using smaller appliances like air fryers, microwaves, or slow cookers.
Reducing indoor heat sources helps your air conditioner work more efficiently.
Air leaks around windows and doors can allow hot outdoor air to enter while letting cool air escape.
Upgrading to energy-efficient windows and doors can improve comfort, but even simple upgrades like weatherstripping and caulking can help reduce drafts and improve energy efficiency.
Stopping unwanted air movement is one of the easiest ways to improve summer comfort.
If your house still feels warm despite running the air conditioner, the problem may not be the HVAC system.
Many homes have gaps, cracks, and poorly insulated areas that allow hot outdoor air to enter while letting cooled air escape.
This means your air conditioner has to work harder and run longer to maintain a comfortable temperature.
Common signs of insulation and air leakage problems include:
When these issues are present, adjusting the thermostat usually won't solve the underlying problem.
One of the most common questions homeowners ask during the summer is why their electric bill suddenly spikes.
While rising temperatures certainly contribute, high cooling costs are often caused by your home losing conditioned air.
Think of it this way. If your home has gaps and air leaks throughout the building envelope, you're essentially paying to cool the outdoors.
Common reasons for high summer energy bills include:
Before replacing your air conditioner, it's worth evaluating how well your home is holding onto the cool air you're already paying for.
If you're looking for a long-term solution to summer comfort problems and high cooling costs, insulation should be near the top of your list.
Insulation slows heat transfer and helps keep conditioned air where it belongs.
When insulation is missing, damaged, or no longer performing properly, heat enters your home much more easily, causing your air conditioner to run longer and work harder.
While cooling tips like closing blinds and running fans can help, they don't address the root cause of many comfort problems.
Foam insulation creates an air seal that helps block hot outdoor air from entering your home while keeping conditioned air inside.
Benefits of foam insulation include:
Homeowners often see the biggest improvements in areas such as:
When your building envelope is properly sealed, your home stays comfortable longer, and your air conditioner doesn't have to work overtime.
There are plenty of ways to keep your house cool in summer, from closing blinds and using ceiling fans correctly to adding shade around your home and reducing indoor heat sources.
But if your home still feels hot and your cooling bills keep climbing, the issue may be deeper than your thermostat setting.
A poorly insulated home allows heat to enter and conditioned air to escape, making it difficult to maintain comfort no matter how hard your air conditioner works.
Improving your home's building envelope through proper insulation and air sealing can help create a more comfortable, energy-efficient home year-round.
If you're wondering whether your insulation is contributing to high cooling bills, uncomfortable rooms, or a constantly running AC system, check out our guide to the 18 Signs and Symptoms It May Be Time to Update Your Insulation.
5 Existing Home Insulation Problems That Show Up in the Summer
Why Is My Electric Bill So High in the Summer?
5 Ways to Cut Utility Bills in the Summer
You can help keep your home cool by closing blinds, using ceiling fans correctly, limiting indoor heat sources, running exhaust fans, adding shade around your home, and improving insulation and air sealing.
Poor insulation, air leaks, inadequate attic insulation, ductwork issues, and HVAC performance problems can all contribute to a home staying hot despite running the air conditioner.
High summer electric bills are often caused by air conditioning systems working harder to compensate for air leaks, poor insulation, heat gain through windows, and extreme outdoor temperatures.
Closing blinds, using ceiling fans, weatherstripping doors and windows, and reducing indoor heat sources are some of the most affordable ways to improve summer comfort.
Yes. Proper insulation helps slow heat transfer and keeps conditioned air inside your home, reducing the workload on your air conditioner and lowering cooling costs.
Heat naturally rises, which often causes second floors to be warmer.
Poor attic insulation, attic air leaks, inadequate ventilation, and HVAC balancing issues can make the problem worse.
Improving your home's building envelope through air sealing and insulation upgrades is often the most effective long-term way to increase comfort, reduce cooling costs, and improve energy efficiency.