How Blown-In Insulation Keeps House Cooler on Fewer Dollars

When the summer sun is beating down and your AC is working overtime, you might be wondering:

Why is it still so hot here?

The answer could be right above your head—literally. If your attic or walls aren’t properly insulated, that summer heat is sneaking into your home and making your cooling system work twice as hard.

That’s where blown-in insulation comes in.

What Is Blown-In Insulation?

Blown-in insulation is a loose-fill material (usually fiberglass or cellulose) that’s sprayed into hard-to-reach areas like attics, wall cavities, and crawlspaces. It fills every gap and crevice—giving you a more complete thermal barrier than traditional batts or rolls.

How It Fights the Summer Heat

Here’s how blown-in insulation helps keep your home cooler when temperatures rise:

Reduces Heat Transfer: It acts like a shield between your attic and living spaces, preventing heat from radiating downward.

Protects Your AC System: With less heat entering the home, your air conditioner doesn’t have to run as often—saving you money and reducing wear and tear.

Seals the Gaps: Blown-in insulation fills tiny cracks and corners that other insulation can miss, stopping hot air from sneaking in.

Maintains Even Temps: Say goodbye to hot spots and uneven cooling. Blown-in insulation helps your entire home stay consistently comfortable.

Cool Comfort + Energy Savings

The best part? Proper insulation can reduce your cooling costs by up to 20–30%. Over time, it pays for itself through lower energy bills and a more comfortable home all summer long.

Ready to Stay Cool This Summer?

Let Custom Insulation Company, Inc. help you take control of your indoor comfort. Our blown-in insulation services are fast, affordable, and tailored to your home’s needs.