Why You Should Insulate in the Summer
Last updated February 13, 2026
Last updated February 13, 2026

Summer is right around the corner here in the Minneapolis and St. Cloud, MN areas, and many residents are doing everything they can to ensure that they’re ready for the hot weather to come. While AC maintenance or purchasing brand new cooling systems are both effective ways to prepare, one important aspect of home cooling that often gets overlooked is insulation. If you think it’s just for winter, you’re not alone.
Most commonly associated with the colder months of the year, insulation actually provides year-round benefits for your home. Just as insulation keeps warm air from escaping during the winter months, it’s also a crucial tool for ensuring that cold air doesn’t escape when it’s hot outside during the summer. Since 90% of homes throughout the U.S. lack proper insulation, there’s a good chance that YOUR home could benefit from an upgrade.
One of the most important factors that can influence whether or not a home is capable of properly holding conditioned air is the building envelope. Essentially, the building envelope is what separates your home’s conditioned (heating and cooled) and unconditioned spaces. Take the garage, for example, which is unconditioned and typically home to various toxic chemicals and fumes. If the building envelope isn’t properly sealed, these can leak into your home’s conditioned living spaces.
The solution to problems associated with a poorly-sealed envelope is to use air sealing along with high-performance insulation. While each of these home performance upgrades is useful on its own, they are synergistic when combined and can play a major role in ensuring that conditioned air doesn’t escape your home.
As you might expect, upgrading the insulation in your home can result in a number of different benefits, including:
At RetroGreen, we take energy efficiency and home performance seriously. We take a “whole home” approach to every job, no matter how large or small it may be. After countless installations, we’ve seen firsthand exactly how much of a difference insulation upgrades can make, especially when it comes to keeping conditioned air from escaping during the summer months. We’ll answer any questions you may have and take your budget and needs into consideration when developing a plan, all with boosting home efficiency in mind.
Get a free energy audit and discover how much you could save on your utility bills.
Get Your Free QuoteOwner & Founder
Chris didn't start RetroGreen Energy because he wanted to be in the insulation business. He started it because he wanted to fix homes the right way.
After earning his BPI Building Analyst certification and Minnesota Building Contractor license, Chris spent years studying how homes perform as systems. He saw firsthand that most comfort and energy problems weren't caused by old windows or outdated furnaces — they were caused by air leakage and inadequate insulation that nobody was diagnosing properly.
In 2009, he launched RetroGreen Energy with a commitment to doing things differently. Every project would start with proper diagnostics. Every recommendation would be based on data, not sales targets. And every homeowner would get the honest truth about what their home actually needed.
READY TO SAVE?
Join hundreds of Minnesota homeowners already enjoying lower utility costs with RetroGreen Energy.