60/100CR Score
Ranked #1 because of its Google rating and review volume: 4.9★ from 3,407 Google reviews.
- 4.9★ from 3,407 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2161 Del Franco St, San Jose, CA 95131
Best Insulation Contractors in Santa Clara, CA (2026)
77 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Santa Clara: Service Champions, CR Score 60/100; 4.9★ from 3,407 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Los Gatos Top Insulation, posts 24/7 hours; ranked #2 of 77.
- 28
Most-reviewed: Service Champions, 4,721 Google reviews at 4.9★, the most of 77 ranked; ranked #28.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
77 Santa Clara insulation contractors are ranked here by CR Score, from ten published factors. 30 are open 24/7, 55 open Saturdays and 53 open Sundays, based on posted hours. The median Google rating is 5.0★ across 77 rated businesses.
Top 10 insulation contractors in Santa Clara at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Service Champions | 60 | 4.9★ (3,407) | San Jose, 4 mi away | 24/7 | Overall |
| 2 | Los Gatos Top Insulation | 60 | 4.9★ (86) | Los Gatos, 9 mi away | 24/7 | Emergencies |
| 3 | Attic Pros | 60 | 4.7★ (104) | San Jose, 8 mi away | 24/7 | — |
| 4 | TRIO Heating, Air & Plumbing | 59 | 4.9★ (1,142) | San Jose, 3 mi away | 24/7 | — |
| 5 | 911 Attic Insulation | 59 | 5.0★ (19) | Fremont, 4 mi away | 24/7 | — |
| 6 | Attic Elite | 58 | 4.9★ (474) | Newark, 13 mi away | Sun | — |
| 7 | Attic City San Jose | 58 | 4.6★ (14) | San Jose, 4 mi away | 24/7 | — |
| 8 | Greenshield Insulation | 58 | 5.0★ (14) | Santa Clara | Sat · Sun · Evenings | — |
| 9 | Attic Bros, Inc. | 58 | 4.9★ (266) | San Jose, 3 mi away | — | — |
| 10 | Delta Spray Foam Insulation | 58 | 5.0★ (34) | Mountain View, 7 mi away | Sat · Sun · Evenings | — |
The 77 best insulation contractors in Santa Clara, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Los Gatos, 9 mi away
60/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 86 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 86 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 15 Montebello Way, Los Gatos, CA 95030
#3 Attic Pros
Based in San Jose, 8 mi away
60/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.7★ from 104 Google reviews, listed on Google as “Insulation contractor”.
- 4.7★ from 104 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3071 Monterey Rd suit b, San Jose, CA 95111
Based in San Jose, 3 mi away
59/100CR ScoreRanked #4 because of its Google rating and review volume: 4.9★ from 1,142 Google reviews.
- 4.9★ from 1,142 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1310 N 4th St, San Jose, CA 95112
Based in Fremont, 4 mi away
59/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 19 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
#6 Attic Elite
Based in Newark, 13 mi away
58/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 474 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 474 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat closed · Sun 8 AM–6 PM
- Address
- 37310 Cedar Blvd Suite H, Newark, CA 94560
Based in San Jose, 4 mi away
58/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.6★ from 14 Google reviews, listed on Google as “Insulation contractor”.
- 4.6★ from 14 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1530 Southwest Expy Suite 221, San Jose, CA 95126
Based in Santa Clara
58/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 14 Google reviews
- Hours
- Mon–Sun 9 AM–7 PM
- Address
- 3284 Edward Ave unit a, Santa Clara, CA 95054
Based in San Jose, 3 mi away
58/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 266 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 266 Google reviews
- Hours
- Mon 8 AM–6 PM · Tue–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 1942 O'Toole Way, San Jose, CA 95131
Based in Mountain View, 7 mi away
58/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 34 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 34 Google reviews
- Hours
- Mon–Sun 9 AM–9 PM
- Address
- 472 Castro St, Mountain View, CA 94041
#11 Everlast Attic
Based in San Jose, 5 mi away
58/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 7 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1567 Alta Glen Dr suit 2, San Jose, CA 95125
Based in San Jose, 4 mi away
57/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.6★ from 7 Google reviews, listed on Google as “Insulation contractor”.
- 4.6★ from 7 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 763 Mabury Rd # 30, San Jose, CA 95133
#13 Attic Star
Based in Redwood City, 16 mi away
57/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 156 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 156 Google reviews
- Hours
- Mon–Thu 7 AM–7:30 PM · Fri 7 AM–6 PM · Sat–Sun 7 AM–7:30 PM
- Address
- 2847 Middlefield Rd, Redwood City, CA 94063
Based in Palo Alto, 12 mi away
57/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 16 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 407 California Ave Unit 10, Palo Alto, CA 94306
#15 Attic Team
Based in San Jose, 2 mi away
57/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 27 Google reviews
- Hours
- Mon–Fri 9 AM–6 PM · Sat closed · Sun 11 AM–6 PM
- Address
- 2175 The Alameda #209, San Jose, CA 95126
Based in Canoga Park, 7 mi away
57/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 7 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Redwood Shores, 3 mi away
57/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 11 Google reviews
- Hours
- Mon–Sun 7 AM–7:30 PM
#18 AttiCity
Based in Redwood Shores, 1 mi away
57/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 67 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 67 Google reviews
- Hours
- Mon–Fri 9 AM–6:30 PM · Sat–Sun closed
Based in Fremont, 11 mi away
57/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 11 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 44240 Fremont Blvd Suite 16, Fremont, CA 94538
Based in Santa Clara
57/100CR ScoreRanked #20 because of its Google rating and review volume: 4.8★ from 570 Google reviews.
- 4.8★ from 570 Google reviews
- Hours
- Mon–Sun 7 AM–9 PM
- Address
- 3678 Bassett St, Santa Clara, CA 95054
#21 Trap Guard
Based in Redwood Shores, 13 mi away
56/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 13 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Ashland, 3 mi away
56/100CR ScoreRanked #22 because of its Google rating and review volume: 5.0★ from 148 Google reviews.
- 5.0★ from 148 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in San Jose, 4 mi away
56/100CR ScoreRanked #23 because of its Google rating and review volume: 4.8★ from 291 Google reviews.
- 4.8★ from 291 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 888 Faulstich Ct, San Jose, CA 95112
Based in Fremont, 10 mi away
56/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 23 Google reviews
- Hours
- Mon–Sat 8 AM–5 PM · Sun 9 AM–2 PM
- Address
- 3051 Quantum Dr #2411, Fremont, CA 94538
Based in San Jose, 3 mi away
56/100CR ScoreRanked #25 because of its Google rating and review volume: 4.9★ from 148 Google reviews.
- 4.9★ from 148 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 670 Coleman Ave, San Jose, CA 95110
Insulation contractors ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 77 ranked insulation contractors here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Eagle Insulation Inc. | 56 | 4.8★ (31) | 6 mi |
| 27 | Pestfree Attic Cleaners Saratoga | 56 | 5.0★ (8) | 6 mi |
| 28 | Service Champions | 56 | 4.9★ (4,721) | 25 mi |
| 29 | Pro Attic Restoration | 56 | 4.9★ (48) | 23 mi |
| 30 | Regal Insulation Services | 56 | 5.0★ (31) | 16 mi |
| 31 | Attic Bros | 56 | 5.0★ (25) | In Santa Clara |
| 32 | Fremont Insulation Pros | 55 | 5.0★ (6) | 7 mi |
| 33 | Bay Valley Insulation Inc | 55 | 4.0★ (4) | 10 mi |
| 34 | Reactic Restoration | 55 | 5.0★ (52) | 3 mi |
| 35 | Reactic Restoration | 54 | 5.0★ (12) | 20 mi |
| 36 | Service Champions | 54 | 4.8★ (2,337) | 24 mi |
| 37 | Attic Bros of Mountain View | 54 | 4.9★ (46) | 7 mi |
| 38 | American Attics | 54 | 5.0★ (89) | 21 mi |
| 39 | All State Insulation | 54 | 5.0★ (25) | 14 mi |
| 40 | Service Champions | 54 | 4.9★ (1,331) | 25 mi |
| 41 | Clean CrawlSpace Inc | 54 | 5.0★ (15) | 3 mi |
| 42 | Insulation Solutions | 54 | 5.0★ (11) | 23 mi |
| 43 | Attic Solutions - Rodent Proofing & Insulation Services | 54 | 4.8★ (39) | 23 mi |
| 44 | EM Energy & Air | 54 | 4.9★ (101) | 4 mi |
| 45 | Atticguard Pro | 53 | 5.0★ (4) | 13 mi |
| 46 | AttiCali Insulation & Rodents Proofing | 53 | 4.9★ (8) | 10 mi |
| 47 | AttiCity | 53 | 4.6★ (13) | 4 mi |
| 48 | Finest Heating & air | 53 | 4.9★ (87) | 11 mi |
| 49 | Attic Bros of Palo Alto | 53 | 4.9★ (39) | 11 mi |
| 50 | AJ Heating & Cooling Inc. | 53 | 5.0★ (32) | 18 mi |
Also serving Santa Clara
20 more insulation contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Alliance Insulation | 5.0★ (1) | 8 mi |
| Attic Bros of Milpitas | 5.0★ (2) | 6 mi |
| Attic insulation removal and installation | In Santa Clara | |
| Attic Wise Cleaning | 5.0★ (2) | 8 mi |
| Atticali of Sunnyvale | 5.0★ (1) | 6 mi |
| Attics Crew | In Santa Clara | |
| Bear Insulation and Services | 5.0★ (2) | 5 mi |
| Equinox Roofing Solutions | 5.0★ (1) | 3 mi |
| Get Insulated | In Santa Clara | |
| Insulation & Air Duct Crew | 5.0★ (2) | 22 mi |
| KomKell Cooling Solutions | In Santa Clara | |
| Level 5 | 4.0★ (24) | In Santa Clara |
| My Steam Rug & Sofa Cleaning | 5.0★ (2) | 14 mi |
| O'Donnell Plastering Inc | 4.2★ (5) | In Santa Clara |
| PRO ATTIC RESTORATION | 5.0★ (2) | 23 mi |
| RoofGuard Systems | 4.4★ (35) | In Santa Clara |
| Santa Clara A+ Insulation Service | 5.0★ (2) | 4 mi |
| Silicon Thermal | 4.0★ (1) | 7 mi |
| Silver Peak Construction Group Inc. | 5.0★ (2) | 3 mi |
| SW Attic Insulation | In Santa Clara |
How much do insulation contractors cost in Santa Clara?
National price ranges in USD, not adjusted for Santa Clara. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Attic insulation | $1,700 | $2,100 | $2,500 | Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range | October 2026 |
How we ranked Santa Clara insulation contractors
We scored 77 Santa Clara insulation contractors on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Santa Clara data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
Insulation contractors in Santa Clara: frequently asked questions
Who is the best insulation contractor in Santa Clara?
By CR Score, the highest-ranked insulation contractor in Santa Clara, CA is Service Champions with a CR Score of 60/100. It has 4.9★ from 3,407 Google reviews. It is open 24/7. Los Gatos Top Insulation (#2) and Attic Pros (#3) follow. We ranked 77 insulation contractors on ten factors, last updated October 22, 2026.
How many insulation contractors are there in Santa Clara?
ContractorsRanked ranks 77 insulation contractors serving Santa Clara, CA. 3 of them are based in Santa Clara; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which insulation contractors in Santa Clara are open 24/7?
30 ranked insulation contractors in Santa Clara post 24/7 hours. The highest-ranked are Service Champions (#1), Los Gatos Top Insulation (#2) and Attic Pros (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which insulation contractors in Santa Clara work on weekends?
55 of 77 ranked insulation contractors post Saturday hours and 53 post Sunday hours. The highest-ranked open Saturdays are Service Champions (#1), Los Gatos Top Insulation (#2) and Attic Pros (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does attic insulation cost in Santa Clara?
Attic insulation typically costs $1,700 to $2,500, with $2,100 typical (Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range). This is a national range, not adjusted for Santa Clara. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Santa Clara insulation contractors have?
The median Google rating among 77 rated insulation contractors in Santa Clara is 5.0★, with a median of 24 reviews. Service Champions has the most, 4,721 reviews, and ranks #28. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank insulation contractors?
Each insulation contractor gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do insulation contractors outside Santa Clara count in this ranking?
Yes, if they are within 25 mi of the Santa Clara city center, our service radius for insulation contractors. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Update log for Santa Clara
- October 2026: CR Scores recalculated for 77 insulation contractors serving Santa Clara.
More insulation contractors and Santa Clara pages
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