5 Best Insulation Services in San Antonio (2026)

Ranked by real Google ratings and review volume · How we chose

By Brad Smith, Home Services Expert · ✓ Updated October 2026 · 8 min read

We compared 18 insulation services in San Antonio on Google Maps · 5 listed · How we rank

Booking insulation services in San Antonio usually starts with someone climbing into your attic and telling you what they see. The companies on this page hold more than 800 Google reviews between them, and every one is rated 4.8 or higher, so the real differences are scope, how each handles quotes and rebates, and how clean the crew leaves your house.

Short answer: Geo-Insulation, LLC is the top pick at 5.0 stars from more than 420 Google reviews, with reviewers describing free estimates, tidy attic work and help with CPS rebate paperwork. TX Builder (5.0, more than 170 reviews) and Koala Insulation of North San Antonio (4.9, more than 80 reviews) follow. Reviews give few firm prices, so ask for a written quote before you book.

Jump to a business

1. Geo-Insulation, LLC
2. TX Builder
3. Koala Insulation of No…
4. Insulation Pros SATX
5. Attic Pro
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Attic Insulation Companies, Side by Side

#	Business	Rating	Reviews	Best for
1	Geo-Insulation, LLC	5.0 ★	423	Attic insulation with rebate help	View ›
2	TX Builder	5.0 ★	176	Attic insulation removal and air sealing	View ›
3	Koala Insulation of North San Antonio	4.9 ★	90	Spray foam, blown-in and pipe insulation	View ›
4	Insulation Pros SATX	5.0 ★	71	Bexar County and Hill Country homes	View ›
5	Attic Pro	4.8 ★	75	Attic insulation plus duct replacement	View ›

5 Best Insulation Services in San Antonio (2026)

The companies, reviewed one by one

#1 Overall🕑 Open 6 days/wk↩ Responds to reviews

Geo-Insulation, LLC

5.0423 Google reviews

Geo-Insulation, LLC is an insulation contractor based at Harney Path in San Antonio, listed with Monday to Saturday hours. Reviewers describe attic insulation jobs that start with a free in-home estimate followed by an emailed breakdown of the work and cost. A reviewer describes the owner, Tom, as working alongside his crew in the attic on install day.

What people praise

Reviewers describe a free estimate with a written breakdown sent by email
Several reviewers say the company handled CPS rebate paperwork
Crews are described as friendly, on time and tidy
Reviewers mention noticing a difference in upstairs rooms and AC strain after the work

Worth knowing

Google hours run Monday to Saturday, with no Sunday listing

Reputation scorecardrank in San Antonio

Rating5 / 5

Review volume423 · 97th

Confidencehigh

Recency8 weeks ago

Info completenesssite · phone · hours

Rating breakdown99% 5-star

✓ VerifiedSource: Google

Our take: A strong, high-volume pick for attic work, especially if you want help with a utility rebate. Reviewers focus almost entirely on attic jobs, so ask about other areas of the house if you need them.

Website +1210-848-5658 Directions

2766 Harney Path, San Antonio, TX 78234

#2🕑 Open 7 days↩ Responds to reviews

TX Builder

5.0176 Google reviews

TX Builder is an insulation contractor with no street address on Google, serving San Antonio, Austin and nearby cities according to its site. The site describes removing old, compressed, wet or rodent-contaminated insulation and cleaning and sealing attics before installing new insulation. Google also files it under air duct cleaning, chimney services, dryer vent cleaning and HVAC.

What people praise

Technicians explain findings and options in plain terms
Reviewers mention photos and video of what was found
Described as polite, professional and thorough
Reviewers describe the pricing as reasonable

Worth knowing

Most reviews listed describe duct cleaning and fireplace work rather than insulation, so ask for insulation-specific references

Reputation scorecardrank in San Antonio

Rating5 / 5

Review volume176 · 92nd

Confidencemoderate

Recency8 weeks ago

Info completenesssite · phone · hours

Rating breakdown99% 5-star

✓ VerifiedSource: Google

Our take: A well-rated company whose own site is squarely about attic insulation. Because many of its reviews cover other services, confirm the crew and scope for an insulation job before you commit.

Website +1210-761-4855 Directions

#3🕑 Open 5 days/wk↩ Responds to reviews

Koala Insulation of North San Antonio

4.990 Google reviews

Koala Insulation of North San Antonio serves the north side of the city, and its site lists spray foam, blown-in attic insulation, batt installation, insulation removal, solar attic fans, air sealing, crawl space encapsulation and commercial work. It has no street address on Google and is open weekdays. Reviewers describe consultations, attic upgrades and add-on work such as insulating exposed water pipes.

What people praise

Reviewers say the estimator was honest and did not push add-ons they did not need
Jobs are described as on time and quick, with little mess
One reviewer says the crew repaired a dryer vent at no extra charge
Reviewers describe fair pricing compared with other quotes

Worth knowing

Office hours on Google are Monday to Friday only

Reputation scorecardrank in San Antonio

Rating4.9 / 5

Review volume90 · 86th

Confidencemoderate

Recency7 months ago

Info completenesssite · phone · hours

Rating breakdown96% 5-star

✓ VerifiedSource: Google

Our take: A good fit if you want an honest assessment and a broader menu of services, from spray foam to pipe insulation. Its review base is smaller than the two companies above it.

Website +1210-904-2371 Directions

#4🕑 Open 6 days/wk↩ Responds to reviews

Insulation Pros SATX

5.071 Google reviews

Insulation Pros SATX operates from Shady Hollow Lane in San Antonio. Its site lists spray foam, attic blown-in, radiant barrier, crawl space and insulation removal, and says it serves Bexar County, Boerne, New Braunfels, Schertz and Cibolo. Google shows Monday to Saturday hours from 7 AM to 7 PM.

What people praise

Reviewers describe crews as on time, professional and respectful of the home
Several reviewers say pricing was fair compared with other quotes
One reviewer's estimator spotted a leaking AC connection in the attic and flagged it
A reviewer used the company for insulation in a 1920 home

Worth knowing

A smaller review base than the top names, so fewer jobs to compare

Reputation scorecardrank in San Antonio

Rating5 / 5

Review volume71 · 75th

Confidenceearly

Recency7 weeks ago

Info completenesssite · phone · hours

Rating breakdown99% 5-star

✓ VerifiedSource: Google

Our take: A well-liked, flexible option with a wide service area and a perfect 5.0 rating. Its record is still shorter than the leaders, so ask for recent job photos.

Website +1210-239-2660 Directions

7303 Shady Hollow Ln, San Antonio, TX 78255

#5🕑 Open 6 days/wk↩ Responds to reviews

Attic Pro

4.875 Google reviews

Attic Pro is an insulation contractor on Vista Del Monte in San Antonio, and Google also lists it for air duct cleaning. Its site describes attic insulation installation, removal, inspection and attic air sealing. Reviewers describe projects that combine new blown-in insulation with replacement ducting.

What people praise

Reviewers praise a project manager who explained options honestly
One reviewer had old vents and insulation removed and new ducts installed
Crews are described as professional and clean
Reviewers describe the pricing as transparent

Worth knowing

One reviewer reported waiting on a promised quote after an in-home visit, so ask for a quote date up front

Reputation scorecardrank in San Antonio

Rating4.8 / 5

Review volume75 · 81st

Confidenceearly

Recency2 months ago

Info completenesssite · phone · hours

Rating breakdown93% 5-star

✓ VerifiedSource: Google

Our take: A solid choice when insulation and ductwork need attention together. Its rating of 4.8 is the lowest on the page, and the written quote timeline is worth confirming.

Website +1210-750-6966 Directions

1646 Vista Del Monte, San Antonio, TX 78216

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How the scorecards work

The scorecards use public Google data on the date shown. Rating is the live Google star average. Review volume is how many customers have rated the company, compared with other insulation businesses in San Antonio. Confidence weighs the rating by that volume, and recency reflects how recently people still leave reviews.

What drives insulation pricing in San Antonio

Google reviews give few firm prices, so we are not printing a price table. Cost depends on attic size, the R-value you want, whether old insulation must be removed first, and add-ons such as air sealing or radiant barrier. Several Geo-Insulation reviewers mention using a CPS rebate, which can change what you pay out of pocket.

Insulation help across San Antonio and nearby towns

These companies work across San Antonio, with Insulation Pros SATX listing Bexar County, Boerne, New Braunfels, Schertz and Cibolo, and TX Builder listing San Antonio and Austin. Searching for insulation near me? Each listing below shows a phone number so you can ask about your address.

Questions to ask an insulation contractor

Will you give me a written estimate that states the insulation type and depth?
Do you handle utility rebate paperwork, and can you show me how that works?
Does the quote include removing and disposing of old insulation?
Will you air seal gaps before installing new insulation?
How do you protect the home and clean up when the job is done?

Frequently asked questions

Can an insulation job in San Antonio qualify for a CPS rebate?

Several Geo-Insulation reviewers mention using a CPS rebate and say the company handled the paperwork. Ask any contractor whether it manages rebate forms, and check eligibility with the utility directly.

Do San Antonio insulation companies remove old insulation first?

The sites for TX Builder, Koala Insulation of North San Antonio, Insulation Pros SATX and Attic Pro each list insulation removal. Confirm that removal and disposal are written into your quote.

Do these insulation contractors serve areas outside the city?

Insulation Pros SATX lists Bexar County, Boerne, New Braunfels, Schertz and Cibolo, and TX Builder’s site says it serves San Antonio, Austin and nearby cities. Call to confirm your address is covered.

What kinds of insulation do San Antonio companies install?

Koala’s site lists spray foam, blown-in attic insulation and batt insulation, and Insulation Pros SATX lists spray foam, blown-in, radiant barrier and crawl space work. Ask which type suits your attic and why.

Where to start

Geo-Insulation, LLC is the safest first call for attic insulation, with the deepest review record and reviewers who praise its estimates and rebate help. Whoever you pick, get the insulation type, depth and any removal work in writing.

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