Top 10 Best Insulation

We list insulation contractors offering energy-efficient solutions like spray foam and attic insulation. Experts are selected for experience, material quality, and proven results.

Trio Heating and Air

North 4th Street, San Jose, California
4.9 (1195 reviews)
  • Air Quality
  • Plumbing
  • Insulation Attic & Crawl Space
  • See More

🔥 Call for Heating & A/C Repair or New Installation ❤️ Happy Customers ✅ Finance Plans 😊 Discounts & Specials History Established in 2 More Detail

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Insulation Labs

McLaughlin Avenue, Los Angeles, California
4.9 (466 reviews)
  • Insulation replacement
  • Gutter repair
  • Gutter replacement
  • See More

Insulation Labs is all about great customer service, fair pricing and top-quality residential and commercial energy-efficiency solutions. Whether your More Detail

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G&G Indoor Air Services

Regents Road, San Diego, California
4.9 (839 reviews)
  • Heat Pumps
  • AC Installation and Replacement
  • AC Repair
  • See More

G&G Indoor Air Services provides services by experienced AC and heating professionals, HVAC maintenance, ductwork, attic, and crawlspace services to t More Detail

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Everguard Home Insulation

Collins Street, Los Angeles, California
4.9 (478 reviews)
  • Radiant Barrier
  • Attic Insulation
  • Ceiling Insulation
  • See More

A Family Business Since 1959 History Established in 1959. The business was started back in 1959 and has stayed a family business for 3 generati More Detail

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Attic Bros

Scott Boulevard, San Jose, California
4.9 (471 reviews)
  • Indoor pest preventative treatment
  • Insulation Installation
  • Pest extermination
  • See More

Here in the Attic Bros Family we specialized in the following services in the Bay Area and Santa Cruz County: -Attic Cleaning -Attic Insulation Remova More Detail

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Attic Projects Company

Dunbrook Road, San Diego, California
4.9 (825 reviews)
  • Rodent & Pest Proofing
  • Ventilation Services
  • Sump Pump
  • See More

At Attic Projects, we know your home is a big investment, and we aim to provide you with the best service at the best price. As one of the leading More Detail

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Element Home Solutions

West Winton Avenue, San Francisco, California
4.9 (506 reviews)
  • Insulation replacement
  • HVAC system maintenance
  • HVAC installation or replacement
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Specialties Our company provide full HVAC installation, service and repair. Attic & Crawlspace Solutions: From Attic Cleaning & Insulation Removal to More Detail

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Attic Bros, Inc.

O'Toole Way, San Jose, California
4.9 (678 reviews)
  • HVAC installation or replacement
  • Outdoor pest preventative treatment
  • Pest preventative services
  • See More

Here in the Attic Bros Family we specialized in the following services in the Bay Area and Santa Cruz County: -Attic Cleaning -Attic Insulation Remova More Detail

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Home Upgrade Specialist Inc

West 3rd Street, Los Angeles, California
4.9 (265 reviews)
  • Exterior Paint
  • Heating Systems
  • Solar installation
  • See More

Get $1,000 Rebate on a new heat pump! We strive to have the fastest and best priced Furnace Installation in the Los Angeles Market When it comes time More Detail

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Alley Cat - Rodent Exclusion Company

Market Street, San Francisco, California
4.9 (397 reviews)
  • Indoor pest preventative treatment
  • Outdoor pest preventative treatment
  • Pest preventative services
  • See More

*Bay Area Local *Family Owned & Operated *Professional Rodent Exclusion Experts (i.e., Rats and Mice only) *Eco-Friendly Treatments *No Monthly Paymen More Detail

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Frequently Asked Questions

Insulation reduces heat loss in winter and heat gain in summer, making your home more energy-efficient and comfortable. It also lowers energy bills and improves indoor air quality.

It depends on the area:

  • Fiberglass batts – Common for walls and attics.
  • Spray foam – Provides airtight sealing for attics and basements.
  • Blown-in insulation – Great for hard-to-reach areas.
  • Rigid foam boards – Ideal for exterior walls and basements.


Most insulation lasts 20–100 years, but it may need replacement sooner if it gets damaged by moisture, pests, or settling.



Signs include uneven temperatures, high energy bills, drafts, and cold walls or floors. A professional energy audit can determine if your home needs more insulation.

Costs vary based on insulation type and home size, ranging from $1,500 to $5,000. The savings in reduced energy costs make it a great long-term investment.