A Northridge family hired LA Air Dept to upgrade the attic insulation in their 1970s home. The existing insulation had degraded significantly over the decades, contributing to high summer cooling costs and uncomfortable upstairs rooms during peak heat.
LA Air Dept performed a full attic air sealing and insulation upgrade, bringing the home from an estimated R-11 to R-38 and dramatically improving comfort and energy efficiency.
The crew completed the full air sealing and insulation installation in a single day, with a final blower door test confirming significant improvement in the home's thermal envelope.
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"The upstairs bedrooms used to be unbearable in the summer. After LA Air Dept upgraded our attic insulation, the whole house stays cool and our energy bill went down noticeably."
Our technicians started with a thorough inspection to identify all air leakage points before insulating. Every penetration was sealed prior to blowing in the new insulation, ensuring the upgrade delivered its full energy-saving potential.
Northridge Family Home
Northridge, CA
February 27, 2026
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