The Asbestos Institute logo

The Asbestos Institute

Training center · Glendale, AZ · reviewed since 2015

How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 64%89+56.5Reliability 28%91+25.7Replies to reviews 8%17+1.4Experts Score= 84Not enough data for value; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.84SCORE
AGradeLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#124 of 184 hazardous material removalPosition by Experts Score among all companies we track in this category. · better than 33%
4.9 ★★★★★ 231 Google reviews · 12 photos
93%five-star reviews
4.91★last 12 monthsAverage stars on reviews from the last 12 months only.
0.7%1–2★ in 2 yearsShare of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
0%reviews answered by the owner
Oct 2026latest review

The Asbestos Institute at a glance

Google users rate The Asbestos Institute 4.9 out of 5 based on 231 reviews, frequently praising the knowledgeable and engaging instructors who deliver informative, interactive asbestos and lead-based paint training. Customers highlight the practical real-world scenarios and clear teaching styles that help them pass certification exams. However, some reviewers cite poor communication and logistical errors, such as incorrect email links or mismatched course materials, as recurring issues affecting the online learning experience.

  • Google rating: 4.9 out of 5 from 231 reviews (93% five-star).
  • Reviews on this page: 231 Google reviews (149 with written comments, 2 with photos).
  • Owner responses: the business replied to 0% of reviews.
  • Most recent review: October 23, 2026.
  • Service: Hazardous Material Removal Service serving Glendale, Arizona.

Data from Google, last updated November 5, 2026.

Score profile vs other hazardous material removal

Score per factor (100 = best)Each factor is scored 0–100 on absolute terms (star average, share of 1–2★ reviews, price verdicts…); standing within the category can only raise it, never lower it.. Strongest: momentum and reliability; weakest: replies to reviews.

Satisfaction89Reliability91Craft & service–Value–Momentum100Replies to reviews17Satisfaction: 89 (median 92)Reliability: 91 (median 92)Momentum: 100 (median 100)Replies to reviews: 17 (median 67)
The Asbestos InstituteHazardous Material Removal median0 = centre, 100 = best
SatisfactionSatisfaction · 54% of the scoreRecency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.The Asbestos Institute: 89/100 on this factor. Category median: 92.A
89
ReliabilityReliability · 24% of the scoreHow rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.The Asbestos Institute: 91/100 on this factor. Category median: 92.A
91
Craft & serviceCraft & service · penalty only, up to −10 pointsGoogle review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.Not enough reviews for this factor yet. Category median: 97.–
–
ValueValue · 14% of the scoreCustomers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.Not enough reviews for this factor yet. Category median: 100.–
–
MomentumMomentum · penalty only, up to −10 pointsPenalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.The Asbestos Institute: 100/100 on this factor. Category median: 100.A
100
Replies to reviewsReplies to reviews · 7% of the scoreHow often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.The Asbestos Institute: 17/100 on this factor. Category median: 67.F
17

Bar = this company · dark tick = category median.

Star ratings

231 Google reviews we collected

  • 5 stars21493%
  • 4 stars115%
  • 3 stars10%
  • 2 stars10%
  • 1 star42%

Praise vs complaints

Phrases our text analysis found in 149 written reviews

  • Praise13898%
  • Complaints32%

Topic share

How often each topic comes up in the written reviews

  • Staff & attitude4935%
  • Would recommend4028%
  • Quality & results2618%
  • Communication96%
  • Speed & response86%
  • Price & value64%
  • Honesty & trust32%

What customers talk about

We read 149 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.

  • “Consistently provides educational videos and regulation updates in a way that’s easy to follow and genuinely helpful.”
  • “…tructors I have ever dealt with in class just all around amazing will definitely recommend coming here for your classes it’s almost impossible to fail…”
  • “Andre’s real-world experience and attention to detail made the course both practical and enjoyable.”
  • “His knowledge of the material was exceptional, and he explained everything in a way that was easy to understand and apply.”
  • “Bill and J are VERY responsive any time I have emailed a question or clarification on a regulation and appreciate all of their assistance.”
  • “I learned much more than my expectations in a fun low-pressure learning environment at a very reasonable cost.”
  • “Honestly the best ceritification/trade class I’ve ever taken.”

People customers mention

  • Andre 36 reviews
  • Inspector 6 reviews
  • Zwanenburg 5 reviews
  • Jay 5 reviews
  • Bill 3 reviews

praise complaint · found by our text analysis, Google review wording unchanged.

Recent reviews

MichelleLocal Guide · 13 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a week ago★★★★★

Andre was amazing!!! The AHERA Building Inspector training was by far beyond my expectations, extremely informative and interactive. Thank TAI

Travis3 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 2 weeks ago★★★★★

Andre is a world-class instructor and an excellent resource. I'd recommend these courses to anyone in the field.

Richard2 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 2 weeks ago★★★★★

Just passed my (asbestos supervisor license) test and I can’t thank Andre cwanenburg enough for helping me with every question and concern I had one of the best instructors I have ever dealt with in class just all around amazing will definitely recommend coming here for your classes it’s almost impossible to fail

Cannonball2 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 2 weeks ago★★★★★

Thanks Andre, super informational and interactive. Highly recommended, we will see you in a year.

Casey6 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 3 weeks ago★★★★★

Consistently provides educational videos and regulation updates in a way that’s easy to follow and genuinely helpful.

Jose2 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · Edited a month ago★★★★★

Very good program simple easy I'd recommend it.instructor stay on track and easy to understand

Photos

Customer reviews

4.9 ★★★★★ 231 reviews on Google · rating breakdown

Reviews from Google, shown as published (original wording, unedited).

Team members customers mention
Filter by topic — each topic is highlighted in the reviews in the same color
Michelle RowlandLocal Guide · 13 reviewsTotal number of Google reviews Michelle has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Andre was amazing!!! The AHERA Building Inspector training was by far beyond my expectations, extremely informative and interactive. Thank TAI

Travis Basinger3 reviewsTotal number of Google reviews Travis has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Andre is a world-class instructor and an excellent resource. I'd recommend these courses to anyone in the field.

Richard Leamy2 reviewsTotal number of Google reviews Richard has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Just passed my (asbestos supervisor license) test and I can’t thank Andre cwanenburg enough for helping me with every question and concern I had one of the best instructors I have ever dealt with in class just all around amazing will definitely recommend coming here for your classes it’s almost impossible to fail

Cannonball Underground2 reviewsTotal number of Google reviews Cannonball has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Thanks Andre, super informational and interactive. Highly recommended, we will see you in a year.

Casey Brooks6 reviewsTotal number of Google reviews Casey has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Consistently provides educational videos and regulation updates in a way that’s easy to follow and genuinely helpful.

Jose Lucero2 reviewsTotal number of Google reviews Jose has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Very good program simple easy I'd recommend it.instructor stay on track and easy to understand

Isaac Q1 reviewTotal number of Google reviews Isaac has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Andre made this learning experience very informative, entertaining, and memorable.

Exotic BTW8 reviewsTotal number of Google reviews Exotic has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

I took the 40 hour contractor supervisor asbestos class. I can truly say that they teach with passion they teach with caution and they give you real world scenarios. They don’t just expect you to learn it from a book. I highly recommend the asbestos Institute for training and I will be sending more of our employees here to do their training as well. Five stars all the way! Thanks, Andre!!

Tim RoadnightLocal Guide · 17 reviewsTotal number of Google reviews Tim has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Andre is a great teacher very interesting and easy to listen to. An interesting guy. I looked around I Texas and had had a previous bad experience with another training centre. Andre and his team was worth the 1250 mile drive! Highly recommend!!!

Jonah Reyes4 reviewsTotal number of Google reviews Jonah has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Andre did an amazing job teaching our class. He is just like your favorite teacher from high school. I would recommend that everyone comers here, even out of state. 10/10 of I had the stars to give!

The Asbestos Institute on Google Maps →

Business details