87/100CR Score
Ranked #1 because of its Google rating and availability: 4.9★ from 20 Google reviews, open 24/7.
- 4.9★ from 20 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 201 S Lake Ave, Pasadena, CA 91101
Best Insulation Contractors in Pasadena, CA (2026)
237 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Pasadena: UltraSpan Insulation, CR Score 87/100; 4.9★ from 20 Google reviews; open 24/7.
- 3
Best for emergencies (open 24/7): Attic Rescue Insulation Contractor, posts 24/7 hours; ranked #3 of 237.
- 2
Most-reviewed: HomeShield Pest Control, 2,945 Google reviews at 5.0★, the most of 237 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
237 Pasadena insulation contractors are ranked here by CR Score, from 8 published factors. 38 are open 24/7, 170 open Saturdays and 150 open Sundays, based on posted hours. The median Google rating is 5.0★ across 237 rated businesses.
Top 10 insulation contractors in Pasadena at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | UltraSpan Insulation | 87 | 4.9★ (20) | Pasadena | 24/7 | Overall |
| 2 | HomeShield Pest Control | 87 | 5.0★ (2,945) | Los Angeles, 15 mi away | Sat · Evenings | Most reviews |
| 3 | Attic Rescue Insulation Contractor | 86 | 4.9★ (78) | Castaic, 17 mi away | 24/7 | Emergencies |
| 4 | Prime Climate Insulation Contractor | 85 | 4.9★ (15) | Los Angeles, 4 mi away | 24/7 | — |
| 5 | Insulation Contractor - Alhambra | 85 | 4.4★ (7) | Alhambra, 4 mi away | 24/7 | — |
| 6 | Los Angeles Insulation Masters | 85 | 4.8★ (48) | Los Angeles, 11 mi away | 24/7 | — |
| 7 | Precise Air Systems Inc. | 85 | 4.9★ (434) | Los Angeles, 8 mi away | 24/7 | — |
| 8 | Insulation Labs | 85 | 4.9★ (413) | Van Nuys, 20 mi away | Sat · Sun · Evenings | — |
| 9 | Attic Projects | 84 | 5.0★ (46) | Glendale, 9 mi away | Sat · Sun | — |
| 10 | Attic Masters Insulation Services | 84 | 4.8★ (48) | Sherman Oaks, 18 mi away | 24/7 | — |
The 237 best insulation contractors in Pasadena, ranked
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Los Angeles, 15 mi away
87/100CR ScoreRanked #2 because of its Google rating and review volume: 5.0★ from 2,945 Google reviews, the most Google reviews on this list (2,945).
- 5.0★ from 2,945 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat 8 AM–5 PM · Sun closed
- Address
- 6108 Venice Blvd., Los Angeles, CA 90034
Based in Castaic, 17 mi away
86/100CR ScoreRanked #3 because of its Google rating and availability: 4.9★ from 78 Google reviews, open 24/7.
- 4.9★ from 78 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Los Angeles, 4 mi away
85/100CR ScoreRanked #4 because of its Google rating and availability: 4.9★ from 15 Google reviews, open 24/7.
- 4.9★ from 15 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2256 Colorado Blvd, Los Angeles, CA 90041
Based in Alhambra, 4 mi away
85/100CR ScoreRanked #5 because of its Google rating and availability: 4.4★ from 7 Google reviews, open 24/7.
- 4.4★ from 7 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 68 W Main St, Alhambra, CA 91801
Based in Los Angeles, 11 mi away
85/100CR ScoreRanked #6 because of its Google rating and availability: 4.8★ from 48 Google reviews, open 24/7.
- 4.8★ from 48 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3224 S Central Ave, Los Angeles, CA 90011
Based in Los Angeles, 8 mi away
85/100CR ScoreRanked #7 because of its Google rating and availability: 4.9★ from 434 Google reviews, open 24/7.
- 4.9★ from 434 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5467 W San Fernando Rd, Los Angeles, CA 90039
Based in Van Nuys, 20 mi away
85/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 413 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 413 Google reviews
- Hours
- Mon–Fri 8 AM–6:30 PM · Sat–Sun 8 AM–4:30 PM
- Address
- 7023 Valjean Ave, Van Nuys, CA 91406
Based in Glendale, 9 mi away
84/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 46 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 46 Google reviews
- Hours
- Mon–Sat 7 AM–6 PM · Sun 7 AM–4 PM
- Address
- 1709 Standard Ave, Glendale, CA 91201
Based in Sherman Oaks, 18 mi away
84/100CR ScoreRanked #10 because of its Google rating and availability: 4.8★ from 48 Google reviews, open 24/7.
- 4.8★ from 48 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 15207 Hesby St, Sherman Oaks, CA 91403
Based in Los Angeles, 8 mi away
84/100CR ScoreRanked #11 because of its Google rating and availability: 5.0★ from 5 Google reviews, open 24/7.
- 5.0★ from 5 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4253 E Cesar E Chavez Ave, Los Angeles, CA 90063
#12 ZeroVap
Based in Van Nuys, 18 mi away
84/100CR ScoreRanked #12 because of its Google rating and availability: 5.0★ from 27 Google reviews, open 24/7.
- 5.0★ from 27 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 15207 Hesby St, Van Nuys, CA 91403
Based in Beverly Hills, 15 mi away
84/100CR ScoreRanked #13 because of its Google rating and availability: 4.8★ from 61 Google reviews, open 24/7.
- 4.8★ from 61 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 100 N Crescent Dr, Beverly Hills, CA 90210
Based in Los Angeles, 8 mi away
84/100CR ScoreRanked #14 because of its Google rating and availability: 4.9★ from 13 Google reviews, open 24/7.
- 4.9★ from 13 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2219 Hyperion Ave, Los Angeles, CA 90027
Based in Silver Lake, 3 mi away
84/100CR ScoreRanked #15 because of its Google rating and availability: 5.0★ from 5 Google reviews, open 24/7.
- 5.0★ from 5 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 6155 York Blvd, Highland Park, CA 90042
Based in Azusa, 14 mi away
84/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 94 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 94 Google reviews
- Hours
- Mon–Sun 6 AM–7 PM
- Address
- 1349 N Alameda Ave, Azusa, CA 91702
Based in Los Angeles, 18 mi away
84/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 136 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 136 Google reviews
- Hours
- Mon–Thu 8 AM–6 PM · Fri–Sat 8 AM–7 PM · Sun 8 AM–4 PM
- Address
- 10940 Wilshire Blvd, Los Angeles, CA 90024
Based in Rosemead, 7 mi away
84/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 25 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 25 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 4181 Temple City Blvd, Rosemead, CA 91770
#19 Express Service
Based in Beverly Hills, 18 mi away
83/100CR ScoreRanked #19 because of its Google rating and availability: 4.8★ from 64 Google reviews, open 24/7.
- 4.8★ from 64 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Pasadena
83/100CR ScoreRanked #20 because of its Google rating and availability: 5.0★ from 49 Google reviews, open 24/7.
- 5.0★ from 49 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1308 E Colorado Blvd Ste 2302, Pasadena, CA 91106
Based in Pasadena
83/100CR ScoreRanked #21 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
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 953 S Raymond Ave, Pasadena, CA 91105
Based in Los Angeles, 10 mi away
83/100CR ScoreRanked #22 because of its Google rating and availability: 5.0★ from 4 Google reviews, open 24/7.
- 5.0★ from 4 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 240 Virgil Ave, Los Angeles, CA 90004
Based in Bell, 15 mi away
83/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 59 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 59 Google reviews
- Hours
- Mon–Sun 8 AM–7 PM
Based in Alhambra, 4 mi away
83/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.6★ from 26 Google reviews, listed on Google as “Insulation contractor”.
- 4.6★ from 26 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 901 S Fremont Ave, Alhambra, CA 91803
Based in Hollywood, 12 mi away
83/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 36 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 36 Google reviews
- Hours
- Mon–Thu 7 AM–9 PM · Fri 7 AM–7 PM · Sat–Sun 7 AM–9 PM
- Address
- 7020 Lanewood Ave #307, Hollywood, CA 90028
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 237 ranked insulation contractors here; the rest are on their profiles.
Also serving Pasadena
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 |
|---|---|---|
| AAA Roofing and Insulation Services | 5.0★ (2) | 18 mi |
| Bob Mezzo Plastering | 5.0★ (2) | 24 mi |
| Cɑѕсɑdе Attiс Inѕulɑtiοn | 5.0★ (1) | In Pasadena |
| Contractor Monrovia Redzone | 5.0★ (2) | 8 mi |
| Control | 5.0★ (2) | 18 mi |
| Kiko's insulation corporation | 5.0★ (2) | 21 mi |
| Leos Insulation | 5.0★ (2) | 17 mi |
| Lone Star | 5.0★ (2) | 21 mi |
| Master Insulation & AC | 5.0★ (2) | 18 mi |
| Pasadena Insulation | In Pasadena | |
| QUALITY FOAM | 5.0★ (2) | 12 mi |
| Smart Budget Insulation of Burbank | 3.0★ (2) | 10 mi |
| Smart Value Insulation | 5.0★ (2) | 10 mi |
| South Gate Insulation Pros | 5.0★ (2) | 14 mi |
| Storm Plastering | 5.0★ (1) | In Pasadena |
| The Insulation Experts | 5.0★ (2) | 14 mi |
| Titan Insulation - Pasadena | 5.0★ (2) | In Pasadena |
| Vasitos Construction | 5.0★ (2) | 14 mi |
| Verifiable Insulation Good | In Pasadena | |
| Western Industrial Ceramics | 5.0★ (2) | 15 mi |
How much do insulation contractors cost in Pasadena?
National price ranges in USD, not adjusted for Pasadena. 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 Pasadena insulation contractors
We scored 237 Pasadena insulation contractors on 8 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. Unknown factors are left out of the score, 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 Pasadena data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |
Insulation contractors in Pasadena: frequently asked questions
Who is the best insulation contractor in Pasadena?
By CR Score, the highest-ranked insulation contractor in Pasadena, CA is UltraSpan Insulation with a CR Score of 87/100. It has 4.9★ from 20 Google reviews. It is open 24/7. HomeShield Pest Control (#2) and Attic Rescue Insulation Contractor (#3) follow. We ranked 237 insulation contractors on 8 factors, last updated October 22, 2026.
How many insulation contractors are there in Pasadena?
ContractorsRanked ranks 237 insulation contractors serving Pasadena, CA. 3 of them are based in Pasadena; 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 Pasadena are open 24/7?
38 ranked insulation contractors in Pasadena post 24/7 hours. The highest-ranked are UltraSpan Insulation (#1), Attic Rescue Insulation Contractor (#3) and Prime Climate Insulation Contractor (#4). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which insulation contractors in Pasadena work on weekends?
170 of 237 ranked insulation contractors post Saturday hours and 150 post Sunday hours. The highest-ranked open Saturdays are UltraSpan Insulation (#1), HomeShield Pest Control (#2) and Attic Rescue Insulation Contractor (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does attic insulation cost in Pasadena?
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 Pasadena. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Pasadena insulation contractors have?
The median Google rating among 237 rated insulation contractors in Pasadena is 5.0★, with a median of 15 reviews. HomeShield Pest Control has the most, 2,945 reviews, and ranks #2. 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 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do insulation contractors outside Pasadena count in this ranking?
Yes, if they are within 25 mi of the Pasadena 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 Pasadena
- October 2026: CR Scores recalculated for 237 insulation contractors serving Pasadena.
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