Skip to content
ContractorsRanked

Best Insulation Contractors in Glen Avon, CA (2026)

74 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Glen Avon: NexGen HVAC & Plumbing, CR Score 90/100; 4.7★ from 1,769 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Gopher Patrol, posts 24/7 hours; ranked #2 of 74.

  3. 6

    Most-reviewed: RighTime Home Services, 3,741 Google reviews at 4.7★, the most of 74 ranked; ranked #6.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

74 Glen Avon insulation contractors are ranked here by CR Score, from 8 published factors. 12 are open 24/7, 48 open Saturdays and 40 open Sundays, based on posted hours. The median Google rating is 4.8★ across 74 rated businesses.

Top 10 insulation contractors in Glen Avon at a glance

Top 10 insulation contractors in Glen Avon at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1NexGen HVAC & Plumbing904.7★ (1,769)Riverside, 15 mi away24/7Overall
2Gopher Patrol894.9★ (182)Riverside, 8 mi away24/7Emergencies
3Attic Projects865.0★ (168)Rancho Cucamonga, 8 mi awaySat · Sun · Evenings—
4My Insulation Guy864.9★ (155)Riverside, 8 mi awaySat · Sun · Evenings—
5NexGen HVAC & Plumbing854.8★ (708)Fontana, 3 mi away24/7—
6RighTime Home Services844.7★ (3,741)Corona, 13 mi away24/7Most reviews
7Attic Advisor835.0★ (37)Riverside, 8 mi awaySat · Sun · Evenings—
8Ameriwest Home Services835.0★ (203)Riverside, 8 mi awaySat—
9All Type Insulation Services, Inc825.0★ (20)Riverside, 8 mi awaySat · Sun · Evenings—
10Ace Handyman Services Corona Norco824.9★ (191)Corona, 11 mi away24/7—

The 74 best insulation contractors in Glen Avon, 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.

  1. Ranked #1 in Glen Avon

    #1 NexGen HVAC & Plumbing

    Based in Riverside, 15 mi away

    90/100CR Score

    Ranked #1 because of its Google rating and availability: 4.7★ from 1,769 Google reviews, open 24/7.

    • 4.7★ from 1,769 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    21800 Van Buren Boulevard Building 4, Riverside, CA 92518
    View profile for NexGen HVAC & Plumbing(951) 420-7560

  2. #2 Gopher Patrol

    Based in Riverside, 8 mi away

    89/100CR Score

    Ranked #2 because of its Google rating and availability: 4.9★ from 182 Google reviews, open 24/7.

    • 4.9★ from 182 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    12155 Magnolia Ave Ste. 10B, Riverside, CA 92503
    View profile for Gopher Patrol(951) 899-3392

  3. #3 Attic Projects

    Based in Rancho Cucamonga, 8 mi away

    86/100CR Score

    Ranked #3 because of its Google rating and trade focus: 5.0★ from 168 Google reviews, listed on Google as “Insulation contractor”.

    • 5.0★ from 168 Google reviews
    Hours
    Mon–Fri 7 AM–8 PM · Sat 8 AM–6 PM · Sun 7 AM–8 PM
    Address
    8690 Red Oak St, Rancho Cucamonga, CA 91730
    View profile for Attic Projects(951) 875-6681

  4. #4 My Insulation Guy

    Based in Riverside, 8 mi away

    86/100CR Score

    Ranked #4 because of its Google rating and trade focus: 4.9★ from 155 Google reviews, listed on Google as “Insulation contractor”.

    • 4.9★ from 155 Google reviews
    Hours
    Mon–Thu 7 AM–8 PM · Fri 7 AM–7 PM · Sat–Sun 7 AM–8 PM
    Address
    4193 Flat Rock Rd suite 200, Riverside, CA 92505
    View profile for My Insulation Guy(951) 527-7283

  7. #7 Attic Advisor

    Based in Riverside, 8 mi away

    83/100CR Score

    Ranked #7 because of its Google rating and trade focus: 5.0★ from 37 Google reviews, listed on Google as “Insulation contractor”.

    • 5.0★ from 37 Google reviews
    Hours
    Mon–Fri 9 AM–7 PM · Sat–Sun 9 AM–5 PM
    Address
    11801 Pierce St Suite 200, Riverside, CA 92505
    View profile for Attic Advisor(714) 488-9819

  8. #8 Ameriwest Home Services

    Based in Riverside, 8 mi away

    83/100CR Score

    Ranked #8 because of its Google rating and trade focus: 5.0★ from 203 Google reviews, listed on Google as “Insulation contractor”.

    • 5.0★ from 203 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat 8 AM–2 PM · Sun closed
    Address
    9960 Indiana Ave suite16, Riverside, CA 92503
    View profile for Ameriwest Home Services(714) 262-1317

  16. #16 Y&S Attic Insulation

    Based in San Bernardino, 14 mi away

    80/100CR Score

    Ranked #16 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Insulation contractor”.

    • 5.0★ from 18 Google reviews
    Hours
    Mon–Fri 8 AM–7 PM · Sat 8 AM–6 PM · Sun 8 AM–7 PM
    Address
    2130 N Arrowhead Ave unit 201 D, San Bernardino, CA 92405
    View profile for Y&S Attic Insulation(909) 601-6617

  20. #20 All

    Based in San Dimas, 21 mi away

    79/100CR Score

    Ranked #20 because of its Google rating and trade focus: 4.9★ from 27 Google reviews, listed on Google as “Insulation contractor”.

    • 4.9★ from 27 Google reviews
    Hours
    Mon–Sun 8 AM–10 PM
    Address
    1453 W Arrow Hwy, San Dimas, CA 91773
    View profile for All(626) 654-1537

  21. #21 The Attic Doctors

    Based in Anaheim, 21 mi away

    78/100CR Score

    Ranked #21 because of its Google rating and trade focus: 4.8★ from 34 Google reviews, listed on Google as “Insulation contractor”.

    • 4.8★ from 34 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun 10 AM–4 PM
    Address
    5530 La Palma Ave, Anaheim, CA 92807
    View profile for The Attic Doctors(714) 269-6544

  25. #25 First Defense Insulation

    Based in Covina, 23 mi away

    78/100CR Score

    Ranked #25 because of its Google rating and trade focus: 4.8★ from 31 Google reviews, listed on Google as “Insulation contractor”.

    • 4.8★ from 31 Google reviews
    Hours
    Mon–Fri 8 AM–9 PM · Sat 7 AM–8 PM · Sun 8 AM–10 PM
    Address
    1343 N Grand Ave A, Covina, CA 91724
    View profile for First Defense Insulation(626) 654-1710

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 74 ranked insulation contractors here; the rest are on their profiles.

insulation contractors in Glen Avon, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Placentia Attic Insulation785.0★ (23)24 mi
27Spray Foam Masters784.9★ (61)18 mi
28VERAXS CORP783.4★ (5)5 mi
29Yorba Linda Insulation Masters775.0★ (8)20 mi
30MYCO Construction773.3★ (7)6 mi
31Pure Eco Inc.774.8★ (10)6 mi
32Advanced Foil Systems762.3★ (4)6 mi
33Pro Service Insulation, Inc.764.5★ (24)12 mi
34West Covina Insulation765.0★ (10)25 mi
35Simple Value Insulation765.0★ (4)20 mi
36Advanced Spray Foam Insulation755.0★ (33)24 mi
37Pro Insulation, Inc.754.0★ (4)7 mi
38Precision Environmental754.8★ (19)18 mi
39Air Tight Insulation of Anaheim755.0★ (5)24 mi
40Placentia Insulation Experts755.0★ (4)22 mi
41Brea Insulation Pros755.0★ (5)25 mi
42Industrial Insulation Inc754.3★ (4)4 mi
43J Martin Indoor Air Quality, LLC755.0★ (251)17 mi
44Placentia Attic Insulation Pros755.0★ (4)24 mi
45Insulfoam743.8★ (13)11 mi
46Attic Guys Inc744.5★ (72)22 mi
47Select Home Improvements744.8★ (132)22 mi
48Everguard Home Insulation745.0★ (23)25 mi
49P & E INSULATION735.0★ (7)12 mi
50Guardian Termite and Pest Control725.0★ (4)17 mi

Also serving Glen Avon

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.

Unranked insulation contractors serving Glen Avon
BusinessGoogle ratingDistance
ALCAL Specialty Contracting Ontario - Home Service Division3.0★ (2)5 mi
All Star Install LLC5.0★ (2)7 mi
american insulation inc5.0★ (1)8 mi
Attic Blow Insulation5.0★ (2)14 mi
AV Painting & Quality Service5.0★ (1)7 mi
Builders' Insulation5.0★ (2)10 mi
Canyon Insulation Inc5.0★ (2)10 mi
CENTROMERE CONSTRUCTION INC3.0★ (2)16 mi
Fireproofing Cleaning Service4.5★ (2)2 mi
Industrial Furnace & Insulation Inc.5.0★ (1)7 mi
Jose Rodriguez Insulation3.0★ (2)6 mi
Kiko's insulation corporation5.0★ (2)20 mi
Lone Star5.0★ (2)20 mi
Performance Contracting Inc5.0★ (2)21 mi
Pure Eco Inc5.0★ (1)7 mi
Semper fi Handyman2.5★ (2)15 mi
Thermal Energy Products3.0★ (2)11 mi
Thermal Nest Insulation of Anaheim5.0★ (2)24 mi
Thermo Logic Insulation4.0★ (1)3 mi
TruTeam of California:5.0★ (1)7 mi

How much do insulation contractors cost in Glen Avon?

National price ranges in USD, not adjusted for Glen Avon. Each row names its basis and the month we checked it.

How much do insulation contractors cost in Glen Avon?
JobLowTypicalHighBasisChecked
Attic insulation$1,700$2,100$2,500Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national rangeOctober 2026

How we ranked Glen Avon insulation contractors

We scored 74 Glen Avon 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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Glen Avon data
Reputation35%Bayesian-adjusted Google star ratingMeasured
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2Not yet collected
Review volume10%log10(reviews + 1) against the list maximumMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability10%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5Measured
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radiusMeasured
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)Measured

Insulation contractors in Glen Avon: frequently asked questions

Who is the best insulation contractor in Glen Avon?

By CR Score, the highest-ranked insulation contractor in Glen Avon, CA is NexGen HVAC & Plumbing with a CR Score of 90/100. It has 4.7★ from 1,769 Google reviews. It is open 24/7. Gopher Patrol (#2) and Attic Projects (#3) follow. We ranked 74 insulation contractors on 8 factors, last updated October 22, 2026.

How many insulation contractors are there in Glen Avon?

ContractorsRanked ranks 74 insulation contractors serving Glen Avon, CA. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which insulation contractors in Glen Avon are open 24/7?

12 ranked insulation contractors in Glen Avon post 24/7 hours. The highest-ranked are NexGen HVAC & Plumbing (#1), Gopher Patrol (#2) and NexGen HVAC & Plumbing (#5). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which insulation contractors in Glen Avon work on weekends?

48 of 74 ranked insulation contractors post Saturday hours and 40 post Sunday hours. The highest-ranked open Saturdays are NexGen HVAC & Plumbing (#1), Gopher Patrol (#2) and Attic Projects (#3). Posted hours are office hours; crews may book weekend jobs separately.

How much does attic insulation cost in Glen Avon?

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 Glen Avon. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Glen Avon insulation contractors have?

The median Google rating among 74 rated insulation contractors in Glen Avon is 4.8★, with a median of 25 reviews. RighTime Home Services has the most, 3,741 reviews, and ranks #6. 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 Glen Avon count in this ranking?

Yes, if they are within 25 mi of the Glen Avon 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 Glen Avon

  1. October 2026: CR Scores recalculated for 74 insulation contractors serving Glen Avon.
  2. October 2026: 2 duplicate listings merged.

More insulation contractors and Glen Avon pages

Other trades in Glen Avon