Thermo Insulation LLC
Verified Pro
3½+ years online5.0
Insulation Services in Naperville, IL
Compare 28 insulation services contractors near you in Naperville and surrounding area with an average rating of 4.8/5. Get free quotes, read reviews, and find the right pro for your project.
Last updated March 23, 2026
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Other Businesses in This Area
Home Insulators LLC
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5.07½+ years onlineLP Insulation of Naperville
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5.0ARC Insulation
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4.97½+ years onlineWalton Contractors
4.913½+ years onlineGreen Attic Insulation
4.816+ years onlineSouth Chicago Insulation, LLC
4.8Weather Shield Insulators
4.89½+ years onlineDupage Insulators Inc
4.6Garland Insulation Contractors
4.3Corwin Drywall Contracting LLC
4.27½+ years onlineInsulation Services in Nearby IL Cities
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Insulation Services in Naperville, IL
Naperville IL insulation upgrades pay back fast given ComEd/Nicor rates and IL's heat-cold swings. Most pre-1990 Naperville homes have R-19 to R-30 attics — well below the modern R-49+ target. Air sealing before insulation matters in older Saybrook homes. ComEd rebates available. NeedInstall connects you with Naperville insulation contractors who handle ComEd paperwork, blower-door testing, and proper detailing.
Naperville attic top-up to R-49+: $2,000-$5,000. Wall dense-pack: $4,500-$11,000 retrofit. Basement spray-foam: $4-$7 per board foot. IL requires a state contractor's registration. ComEd rebates ($300-$1,500). Blower-door test ($300-$500) often required.
Frequently Asked Questions
- Worth on natural gas?
- Yes — IL heating loads heavy. Payback 4-7 years.
- ComEd rebate?
- $300-$1,500 for qualifying upgrades.
- Spray-foam vs cellulose?
- Cellulose for attics. Spray-foam for basements.
About NeedInstall
NeedInstall helps connect customers with local installation professionals across Naperville and surrounding communities. Featured contractors have claimed their profile and verified their business information. Listings marked as "Verified Pro" have been confirmed by the business owner.