Analyzing 7,327,2697.3M ReviewsFor 20,74520.7K Experts

Experts Reviews · Company report
Great Lakes Radon logoHow 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 55%98+53.5Reliability 24%96+23.3Value 14%100+14.1Replies to reviews 7%56+4Experts Score= 95Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.95SCORE

Great Lakes Radon

Detroit, MI · Grade ALetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20. · #26Position by Experts Score among all companies we track in this category. of 56 radon testing services · 5.0★ from 324 Google reviews

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Report card

Percentile vs other radon testing services (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: value and momentum; weakest: replies to reviews.

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.Great Lakes Radon is better than 98% of radon testing services.A
98
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.Great Lakes Radon is better than 96% of radon testing services.A
96
Craft & serviceCraft & service · 0% of the scoreGoogle 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.Great Lakes Radon is better than —% of radon testing services.–
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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.Great Lakes Radon is better than 100% of radon testing services.A
100
MomentumMomentum · 0% of the scorePenalises 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.Great Lakes Radon is better than 100% of radon testing services.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.Great Lakes Radon is better than 56% of radon testing services.C
56

Reviews for your job

Customers hired Great Lakes Radon for 3 kinds of job.

Great Lakes Radon for installation

Clear ✕
Jobs reviewedHow many Google reviews are tagged with this job.5
★ on this jobAverage stars on the reviews where the customer tagged this exact job (Google’s “Services” field).5.00
Usually paidThe price range customers picked most often for this job.—
Rank for this jobPosition of this company in the Job match ranking for this job among the companies we track.Its Job match: 80/100.How Job match is calculatedBuilt only from reviews Google tagged “Installation”:Stars on this job 55%Number of such jobs 25%Overall Experts Score 20%Stars are pulled toward the category average when a company has few tagged jobs, so 3 perfect reviews don’t beat 80 great ones. 4.3★ scores 0, 5.0★ scores full. Volume is compared with the busiest company for this job.#4 / 7
Said fairOf customers who rated the price, the share who chose “Great price” or “Reasonable” rather than “Overpriced”.100%

All 5 Google reviews tagged “Installation”

Maria2 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. · 4 months ago★★★★★

Great Lakes Radon was great to work with. They were quick, easy to communicate with, and made the whole process simple. They walked me through what they were going to do beforehand and then showed me everything afterward so I knew exactly what was done. Super smooth experience — I’d definitely recommend them.

Great priceInstallation
EricLocal Guide · 19 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. · 4 months ago★★★★★

Really happy with the service and professionalism of Great Lakes Radon. They were quick to return my calls, and were able to schedule me in just a couple weeks out. We purchased a digital meter online beforehand and I took samples of the radon levels around our walk-in basement for around a year. While nothing…

Great priceInstallation
AlexanderLocal Guide · 44 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. · 8 months ago★★★★★

Had the team out to install a mitigation system, team whent above and beyond when they made a mistake to make it right. Thank you guys for handling your business with great integrity. Great choice to use them for your raydon mitigation needs.

Great priceInstallationService not listed
JacobLocal Guide · 59 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. · 9 months ago★★★★★

Quick, friendly and efficient. Had a great interaction with this team and was completely satisfied with the system they installed. Was a pleasure working with this company. I highly recommend!

Reasonable priceInstallation
JeremyLocal Guide · 18 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 9 months ago★★★★★

Have a unique setup due to a tri-level build, and the crew did an absolutely phenomenal job. Impeccable work and even sealed the sump, despite having a sub slab installation on the opposite side of the basement. Above and beyond, and a great crew of professionals. Have a radon problem, Great Lakes Radon should be…

Great priceInstallation

Price

Not enough reviews with a price yet.

Price verdictsGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.

Great price 40%Reasonable 57%Overpriced 0%Not sure 2%

Jobs customers hired them for

JobReviewsCategory typical
Fan installation7—
Installation5—
General construction4—

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