Top 10 Best Insulation in San Diego, California

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

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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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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Attic Advisor

Wright Place, San Diego, California
4.9 (166 reviews)
  • Air Sealing Attics
  • Attic Insulation
  • Air Ducts Removal & Replacement
  • See More

Attic Advisor is an experienced insulation company specializing in attics & crawlspace. More Detail

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California Attic & Build

Morena Boulevard, San Diego, California
4.9 (141 reviews)
  • Rodent Proofing
  • Air Sealing
  • Air Duct Replacement
  • See More

At California Attic & Build, we’re on a mission to revolutionize attics across California. Our team of experts is dedicated to enhancing energy effi More Detail

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Air Plus Heating & Cooling

Chesapeake Drive, San Diego, California
4.7 (425 reviews)
  • Air Duct Cleaning
  • Ductwork
  • Evaporator Coil Cleaning
  • See More

Service, sales and installation of residential central heating and air conditioning. We also service/install ductless mini splits, install whole house More Detail

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Dante Faraone construction

East Washington Avenue, San Diego, California
5.0 (41 reviews)
  • Insulation removal
  • Insulation inspection
  • Insulation Installation
  • See More

At Phoenix Insulation Inc, we live by a code: we don’t compromise quality. We strive to provide excellent results with every job, treating each cust More Detail

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Miramar SD Insulation Inc.

Silverton Avenue, San Diego, California
5.0 (28 reviews)
  • Attic Insulation
  • Fiberglass Insulation
  • Attic Insulation Removal
  • See More

Get every insulation project on your list done with excellency and utmost safety through the help of Miramar SD Insulation services. More Detail

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Select Home Improvements San Diego

Trade Street, San Diego, California
4.9 (38 reviews)
  • Tex.Cote / CoolWall
  • Exterior Siding
  • Eco-Friendly Construction
  • See More

We are here to help you with your home improvement needs. We love our work and we loving helping you More Detail

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All Type Insulation Services, Inc.

Wright Place, San Diego, California
4.8 (51 reviews)
  • Concrete Block Insulation
  • Batt and Roll Insulation
  • Foam Board or Rigid Foam
  • See More

All TYPE INSULATION SERVICES is an experienced insulation company specializing in residential and commercial properties throughout Southern California More Detail

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Soundproof San Diego

San Diego Mission Road, San Diego, California
4.9 (28 reviews)

Soundproofing Contractors & Consultants 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.