Home insulation is one of the most effective ways to improve comfort, reduce energy costs, and increase long-term efficiency. Proper insulation helps regulate temperature year-round, keeping homes warm in winter and cool in summer while reducing strain on HVAC systems.
With the variety of materials, techniques, and contractors available today, choosing the right insulation company can feel overwhelming. The best providers offer expert installation, proven materials, and personalized service to match your climate, home type, and budget. Whether you’re upgrading aging insulation or starting fresh, a professional installation ensures maximum performance and lasting results.
The best insulation companies typically range from $1.50 to $5.00 per square foot installed, depending on the material type, location, and project complexity. Choose based on your priorities: energy efficiency, comfort, material sustainability, and overall value.
- Best for Nationwide Service: USA Insulation, Koala Insulation
- Best for Full-Home Energy Upgrades: Energy Saver, GreenHomes America
- Best for Local Expertise: G5 Enterprises Inc., Arango Insulation, Cameron Group
- Best for Affordability and Accessibility: Home Depot, Insulation Commandos
How to Decide
When selecting an insulation company, start by identifying your home’s specific energy challenges. Consider your climate, the age of your insulation, and which materials will perform best — such as foam for tight seals, cellulose for eco-friendliness, or fiberglass for cost efficiency. Always review warranty coverage, contractor certifications, and customer reviews. To get the best value, compare at least three local quotes to ensure consistent material quality and installation standards.
Best Brands at a Glance
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- Exceptional energy efficiency results
- Comprehensive service network nationwide
- Long-term performance and comfort
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- Wide range of materials and services
- Franchise coverage in most states
- Environmentally responsible focus
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- Certified energy-efficiency experts
- Comprehensive service packages
- Strong customer satisfaction ratings
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- Expert home audits
- Eco-friendly material options
- Transparent pricing structure
Top 10 Insulation Companies of 2025
USA Insulation
- Average Cost: $2.50 to $5.00 per sq. ft.
What We Love
USA Insulation leads the industry in residential comfort and energy savings, thanks to its proprietary foam-injection insulation that fills every wall cavity without major demolition. Homeowners consistently report dramatic improvements in temperature consistency, sound reduction, and monthly utility savings. With decades of experience and a wide national service network, it’s the go-to for professional results and reliable quality.
We rate it 5 stars for performance, professionalism, and consistent nationwide service.
Cost Information
Typical project pricing ranges from $2.50 to $5.00 per square foot, depending on home size and insulation depth.
- Walls: $2,500 to $5,500
- Attics: $3,000 to $6,000
- Whole-home insulation: $4,000 to $8,000+
Most homeowners spend $4,000 to $7,000 total for full-home coverage.
Best System
The USA Insulation Foam-in-Place System ensures superior thermal protection, fast installation, and minimal disruption for existing homes.
Koala Insulation
- Average Cost: $1.75 to $4.25 per sq. ft.
What We Love
Koala Insulation has built its reputation on sustainability, accessibility, and high-quality insulation services. The brand’s locally operated franchises provide spray foam, blown-in, and batt insulation, with each project tailored to the home’s unique needs. Koala’s commitment to eco-friendly materials and professional workmanship has earned it growing popularity among homeowners across the U.S.
We rate it 4.5 stars for consistent service, environmental responsibility, and nationwide accessibility.
Cost Information
Typical pricing ranges from $1.75 to $4.25 per square foot based on insulation type and home size.
- Attics: $2,000 to $4,500
- Walls: $2,500 to $5,000
- Crawl spaces: $1,500 to $3,000
Most homeowners spend $3,000 to $6,000 total for mid-sized homes.
Best System
Koala’s Complete Comfort System offers eco-conscious solutions, combining energy audits and multi-material insulation packages for balanced comfort.
Dr. Energy Saver
- Average Cost: $2.00 to $5.00 per sq. ft.
What We Love
Dr. Energy Saver is a trusted national network of certified home performance contractors specializing in insulation, air sealing, and diagnostic energy audits. Each location offers tailored solutions based on a full energy assessment, helping homeowners reduce costs and improve indoor comfort.
We rate it 4.5 stars for technical expertise, comprehensive service offerings, and proven energy savings.
Cost Information
Most projects fall between $2.00 and $5.00 per square foot, depending on insulation type and complexity.
- Attic encapsulation: $4,000 to $8,000
- Full-home insulation and air sealing: $6,000 to $10,000
- Energy audits: $300 to $600
Total project costs typically range from $5,000 to $9,000 for a mid-sized home.
Best Plan
The Dr. Energy Saver Home Performance Plan delivers a data-driven approach with measurable improvements in comfort and utility bills
GreenHomes America
- Average Cost: $2.00 to $4.50 per sq. ft.
What We Love
GreenHomes America helps homeowners make informed, sustainable decisions through professional energy assessments and high-quality insulation services. With a strong focus on whole-home energy efficiency, the company integrates air sealing, duct sealing, and insulation for maximum performance.
We rate it 4 stars for comprehensive energy solutions, transparency, and reliable workmanship.
Cost Information
Average pricing ranges from $2.00 to $4.50 per square foot based on material and project scope.
- Attic insulation: $2,500 to $5,000
- Wall upgrades: $3,000 to $6,000
- Air sealing add-ons: $500 to $1,500
Most homeowners spend $4,000 to $7,500 total for combined services.
Best Program
The GreenHomes Performance Program combines ENERGY STAR® guidance with personalized energy reports to reduce overall consumption.
G5 Enterprises Inc.
- Average Cost: $1.75 to $3.75 per sq. ft.
What We Love
Serving the Midwestern U.S., G5 Enterprises is a locally focused insulation contractor offering spray foam, blown-in cellulose, and air sealing. Known for excellent customer service and skilled technicians, G5 has earned a loyal following among homeowners seeking energy-efficient comfort.
We rate it 4 stars for hands-on expertise, workmanship, and regional reliability.
Cost Information
Typical pricing ranges from $1.75 to $3.75 per square foot, depending on material and area treated.
- Attics: $2,000 to $4,000
- Walls: $2,500 to $5,000
- Crawl spaces: $1,500 to $3,500
Most homeowners spend $3,000 to $6,000 total depending on project scale.
Best Program
🌟 Best Local Service
The G5 Energy Solutions Program ensures regionally tailored insulation systems for optimal comfort and efficiency.
Home Depot
- Average Cost: $1.50 to $3.50 per sq. ft.
What We Love
Home Depot offers insulation materials and professional installation services through its national partner network. Homeowners can choose between DIY projects or certified installers, giving flexibility in both cost and approach.
We rate it 4 stars for accessibility, affordability, and versatile service options.
Cost Information
Installation costs typically range from $1.50 to $3.50 per square foot depending on project type.
- Attics: $2,000 to $4,000
- Walls: $2,500 to $5,000
- DIY material kits: $300 to $800
Most homeowners spend $3,000 to $5,500 total for professionally installed insulation.
Best Program
Home Depot’s Home Services Program connects customers with certified contractors while offering financing and extensive material selection.
Insulation Commandos
- Average Cost: $1.75 to $3.50 per sq. ft.
What We Love
Operating primarily in the Southeast and Mid-Atlantic, Insulation Commandos focuses on quick, affordable insulation upgrades using spray foam and cellulose. Their no-frills approach makes them ideal for homeowners seeking cost-effective improvements without sacrificing reliability.
We rate it 3.5 stars for affordability, efficiency, and straightforward service.
Cost Information
Pricing averages $1.75 to $3.50 per square foot, depending on home type and insulation thickness.
- Attics: $1,800 to $3,500
- Walls: $2,000 to $4,000
- Crawl spaces: $1,500 to $2,800
Most projects cost $3,000 to $5,000 total.
Best Upgrade
The Commandos Comfort Upgrade provides fast insulation enhancements designed to reduce heating and cooling costs immediately.
Arango Insulation
- Average Cost: $1.75 to $3.25 per sq. ft.
What We Love
Serving the Southeastern U.S., Arango Insulation provides both residential and commercial insulation services with a focus on spray foam and fiberglass systems. The company is known for reliable turnaround times and competitive pricing for larger projects.
We rate it 3.5 stars for versatility, dependability, and solid service coverage.
Cost Information
Projects typically range from $1.75 to $3.25 per square foot, with costs varying by material type.
- Residential insulation: $2,000 to $5,000
- Commercial projects: $5,000 to $10,000
- Retrofit upgrades: $3,000 to $6,000
Most residential projects average $3,500 to $6,500 total.
Best Program
The Arango Energy Solutions Team provides tailored installation and commercial-grade energy performance for properties across the Southeast.
Cameron Group
- Average Cost: $1.75 to $3.50 per sq. ft.
What We Love
Cameron Group delivers dependable insulation services to homeowners across the Mid-Atlantic region, focusing on energy-efficient upgrades for attics, walls, and crawl spaces. Their team is praised for personalized service and community engagement.
We rate it 3.5 stars for local expertise, friendly service, and strong follow-through.
Cost Information
Average pricing falls between $1.75 and $3.50 per square foot, depending on project type.
- Attics: $2,000 to $4,500
- Walls: $2,500 to $5,000
- Whole-home projects: $4,000 to $6,000
Most homeowners spend $3,500 to $6,000 total for full coverage.
Best Program
The Cameron Efficiency Program delivers community-driven service with results-focused energy upgrades.
Energy Efficient Insulation
- Average Cost: $1.50 to $3.25 per sq. ft.
What We Love
Energy Efficient Insulation provides straightforward, budget-conscious insulation services for attics and walls in Oklahoma homes. Its focus on simple, reliable installations makes it an accessible option for basic upgrades without premium pricing.
We rate it 3 stars for affordability, reliability, and straightforward service.
Cost Information
Costs typically range from $1.50 to $3.25 per square foot depending on project area.
- Attics: $1,500 to $3,500
- Walls: $2,000 to $4,000
- Whole-home coverage: $3,000 to $6,000
Most homeowners spend $3,000 to $5,000 total for typical projects.
Best Package
The Energy Saver Package focuses on essential insulation upgrades for homeowners seeking better comfort and reduced heating costs.
