Experts Reviews · Company report
Mile High Radon Control 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 59%98+57.5Reliability 26%97+25.3Value 15%100+15.2Craft & service penalty87−1.3Experts Score= 97Not enough data for replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.97SCORE

Mile High Radon Control

Westminster, CO · Grade ALetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20. · #15Position by Experts Score among all companies we track in this category. of 56 radon testing services · 5.0★ from 159 Google reviews

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: craft & service.

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.Mile High Radon Control 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.Mile High Radon Control is better than 97% of radon testing services.A
97
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.Mile High Radon Control is better than 87% of radon testing services.A
87
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.Mile High Radon Control 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.Mile High Radon Control 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.Mile High Radon Control is better than —% of radon testing services.–
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Reviews for your job

Customers hired Mile High Radon Control for 4 kinds of job.

Mile High Radon Control for installation

Clear ✕
Jobs reviewedHow many Google reviews are tagged with this job.22
★ on this jobAverage stars on the reviews where the customer tagged this exact job (Google’s “Services” field).4.86
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: 81/100.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.#3 / 7

All 22 Google reviews tagged “Installation” · showing 20

Laura3 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 years ago★★★★★

Darren and his team were wonderful to work with. He responded quickly to all of my inquiries and was attentive to details. Our radon levels went from 14 pCi/L to 0.4 pCi/L within 10 days of installation. I would highly recommend his services.

Fan installationInstallation+ Responsiveness+ Punctuality+ Quality
Bill1 reviewTotal 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 years ago★★★★★

Darren did a great job installing the radon mitigation system. Within 24 hours the radon level has dropped well below 1. We were extremely happy with the whole process.

Installation+ Responsiveness+ Punctuality+ Quality
DebbieLocal Guide · 15 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 years ago★★★★★

We used Mile High Radon Control for a Radon Mitigation System. Our Radon numbers were not super high, so Darren talked us through the process of doing long term testing and even let us know we could check out radon detectors from the Longmont Library. We did long term testing and ultimately decided to install a…

Installation+ Quality+ Professionalism
Martin6 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 years ago★★★★★

Darren and his employees were very responsive, pricing was very fair, as well as easy to work with.

Installation+ Responsiveness+ Punctuality+ Quality
Ann3 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 years ago★★★★★

Used Mile High Radon Control for Radon Mitigation System Install. They are quick to respond, very professional, and gave a fair price. I'd use them again and recommend to anyone needing one of these systems!

Installation+ Responsiveness+ Punctuality+ Quality
Linda3 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 years ago★★★★★

Very pleased with Darren & his team. Very thorough, communicated exactly what they would do, arrived on time, finished quickly. Radon level is now 1.1. I would not hesitate to recommend Darren and Mile High Radon!

Fan installationInstallation+ Responsiveness+ Punctuality+ Quality
MatthewLocal Guide · 65 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 years ago★★★★★

I compared three businesses. One said he'd have to bore a hole into my basement slab. The other two said they could use the sub-pump hole. Of the two that said they could use the sub-pump, Darren (Mile High Radon) was able to perform the installation for $700 less than Lion Home Services and Darren didn't try to…

Fan installationInstallation+ Responsiveness+ Punctuality+ Quality
NickLocal Guide · 17 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 years ago★★★★★

Great experience with Darren and team - would recommend for sure. Thank you MH Radon!

Fan installationInstallation+ Responsiveness+ Punctuality+ Quality
Sam3 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 years ago★★★★★

Darren was exceptional in every step of the process. We had him install a radon mitigation system for our newly purchased home. He was super communicative from the start, very prompt with the initial inspection, and scheduled the install quickly. The install itself looks great and is very out of the way. I'll…

Installation+ Responsiveness+ Punctuality+ Quality
JeffLocal Guide · 26 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 years ago★★★★★

Darren and his crew did a great job installing a radon mitigation system for us. There was a small hiccup once they realized they needed to drill through a concrete wall, but that was resolved the very next day. Our radon levels dropped from a very high 14.7 pCi/L pre-install to 2.2 pCi/L post. Very professional with good prices and great communication.

Installation
Bonnie5 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 years ago★★★★★

Fair price for the mitigation system. They were on-time, professional, very efficient and knowledgeable. Great experience and would highly recommend.

Installation
Kangmin7 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. · 5 years ago★★★★★

Darren and Mile High Radon Control team are educated, knowledgeable, prompt, positive, and communicative. Darren continues to take course on the new science of radon mitigation to provide his customers the most current and safe radon mitigation treatment. He and his son have a great team work and vibe. It was a…

Installation+ Responsiveness+ Punctuality+ Quality
John7 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. · 5 years ago★★★★★

Mile High was great! We will definitely call them again if the need arises. Darren helped us with our cost estimation and scheduling, and Scott was our installation technician. Both Darren and Scott were professional, knowledgeable, and prompt. Prior to the actual installation we thought our radon mitigation system…

InstallationService not listed+ Responsiveness+ Punctuality+ Quality
PeterLocal Guide · 12 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. · 5 years ago★★★★★

Darren and his crew were great! My house had a slab construction so they had to rent a core driller to get through the concrete slab, but they got the job done -- my radon levels went from 10 down to just 3 which is below the safe limit! Definitely recommend them to make sure you can protect you and your family's health at your home in the basement

Fan installationInstallation+ Quality
Nick6 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. · 5 years ago★★★★★

If your looking for a new radon system at a fair and honest price look no further. We use Mile High Radon for all our referral's for our clients with elevated radon levels. We do home inspections and radon testing. We have used other mitigation companies in the past and they do not compare. Darren is always willing…

Fan installationInstallationFan repair+ Quality+ Professionalism
Jo12 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. · 5 years ago★★

Installation is an eyesore to the house what's done is done. I contacted Darren about issue and his response was a blame game. My advice pay a little extra and hire a more qualified technician.

Installation− Professionalism
MLocal Guide · 14 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. · 5 years ago★★★★★

Daren and James are top quality professionals. The installation work for the Radon Mitigation was fast, professional and high quality work. They are great to deal with.

Installation+ Responsiveness+ Punctuality+ Quality
Brant1 reviewTotal 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. · 5 years ago★★★★★

I wholeheartedly recommend Mile High Radon Control . They were professional, efficient, the work they did was great, and so much more. If you are putting a radon mitigation system in your home, reach out to these guys.

Installation+ Punctuality+ Quality+ Professionalism
RLocal Guide · 65 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. · 6 years ago★★★★★

Highly recommended! As a first time home owner, I am grateful to have been recommended Mile High Radon Control and I wanted to make sure I took the time to recommend them to everyone. Darren and his son did a fantastic job. They were on time, fast, efficient, and friendly. They communicated well prior to and after…

Installation+ Responsiveness+ Punctuality+ Quality
Brandon1 reviewTotal 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. · 5 years ago★★★★★

Rating only, no written review.

InstallationService not listed+ Responsiveness+ Punctuality+ Quality

Show more installation reviews (2 more) →

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 67%Reasonable 33%Overpriced 0%Not sure 0%

Jobs customers hired them for

JobReviewsCategory typical
Installation22—
Fan installation9—
General repairs3—
Fan repair2—

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