The Best Radon Testing Services in Greeley, CO
We graded 9 companies on seven things customers actually report: satisfaction, reliability, workmanship, value, momentum, track record and how owners handle complaints.
From 22,284 Google reviews of 56 top-rated radon testing services nationwide; 9 of them in Greeley, CO. Updated November 2, 2026.
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Best radon testing services in Greeley for pre-listing inspections
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Reliable Solutions Home Inspections LLCHow Job match is calculatedBuilt only from reviews Google tagged “Pre-listing inspections”:Stars on this job 55%5.00★Number of such jobs 25%11Overall Experts Score 20%90Job match= 96Stars are pulled toward the category average (4.94★) 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.96
ProCheck Inspection ServicesHow Job match is calculatedBuilt only from reviews Google tagged “Pre-listing inspections”:Stars on this job 55%5.00★Number of such jobs 25%9Overall Experts Score 20%96Job match= 95Stars are pulled toward the category average (4.94★) 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.95
Allco Inspection ServicesHow Job match is calculatedBuilt only from reviews Google tagged “Pre-listing inspections”:Stars on this job 55%5.00★Number of such jobs 25%4Overall Experts Score 20%89Job match= 86Stars are pulled toward the category average (4.94★) 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.86Job match = this company’s ★ on reviews Google tagged “Pre-listing inspections” (shrunk toward the category average when there are few), how many such jobs it has done, and its overall Experts Score.
What customers said about pre-listing inspections
Reliable Solutions Home Inspectio…CHAD WITH RELIABLE SOLUTIONS DID THE HOME INSPECTION FOR THE HOME WE ARE UNDER CONTRACT ON. HE HAS GREAT TIPS AND QUICK RESPONSE LEADING UP TO THE DATE. THE WEBSITE IS GREAT TO SCHEDULE AND EASY TO GET THROUGH. COMMUNICATION WAS GREAT WITH HIM AND WE DIDNT HAVE ANY PROBLEMS. THE INSPECTIONS DOCUMENTS WERE EASY TO…
Allco Inspection ServicesJustin was punctual and very thorough. He made sure any and all questions were answered. Would definitely recommend him for your home inspection and or sewer scope!
ProCheck Inspection ServicesJustin did a great job! Very thorough, easy to get along with, and happy to share his knowledge as he went.
Allco Inspection ServicesJustin was very professional, on time, thorough, communicative and efficient...I would highly recommended his services for anyone wanting a home inspection prior to purchase. Great job bud 👍🏼
Reliable Solutions Home Inspectio…Chad was very through and detailed during our inspection. The inspection report he gives you is priceless, you see everything he found with pictures and a short description. We are going to use him again anytime we buy real estate. Highly recommended!
Reliable Solutions Home Inspectio…Chad was amazing. I thank Brandon for recommending Chad to do our inspection for our house we are trying to buy. He walked and explained everything to us. Very friendly and was patient with our kids. It was like we knew Chad before the inspection, thank you again Chad!
Overall ratings
Experts Score 0–100Experts Score (0–100)Absolute quality first: recency-weighted star average (≈54%), share of 1–2★ reviews (≈24%), customers’ price verdicts (≈14%), owner replies to critical reviews (≈7%); minus up to 10 points each for complaints flagged in Google review highlights and for a real slide in recent ratings. Hover a company’s score on its page for the full breakdown. and a letter grade per factor (A = top 20% of radon testing services).
| # | Company | ScoreExperts Score (0–100)Absolute quality first: recency-weighted star average (≈54%), share of 1–2★ reviews (≈24%), customers’ price verdicts (≈14%), owner replies to critical reviews (≈7%); minus up to 10 points each for complaints flagged in Google review highlights and for a real slide in recent ratings. Hover a company’s score on its page for the full breakdown. | FactorsFactor grades, in orderSatisfaction (54%): Recency-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.Reliability (24%): How 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.Craft & service (0%): Google 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.Value (14%): Customers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.Momentum (0%): Penalises 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.Replies to reviews (7%): How 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.One letter per factor score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = below 20. | ★Google star rating as shown on Google Maps. | Typical billMedian bill customers of this company reported in their reviews (needs 3+ priced reviews). |
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| 1 |  ColoRadonGreeley, CO | A 99How 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%100+58.7Reliability 26%98+25.6Value 15%100+15.2Craft & service penalty99−0.1Experts Score= 99Not 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. | AAAAA– | 5.00 | — |
| 2 |  Brian Persons Front Range Home InspectionsGreeley, CO | A 97How 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%97+56.9Reliability 26%95+24.8Value 15%100+15.2Craft & service penalty99−0.1Experts 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. | AAAAA– | 4.93 | — |
| 3 | ProCheck Inspection ServicesGreeley, CO | A 96How 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%99+54Reliability 24%98+23.8Value 14%100+14.1Replies to reviews 7%56+4Experts Score= 96Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAC | 4.97 | — |
| 4 |  A Neeley Home Inspection ServicesGreeley, CO | A 95How 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%96+56.3Reliability 26%96+25Value 15%100+15.2Craft & service penalty88−1.2Experts Score= 95Not 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. | AAAAA– | 4.97 | — |
| 5 |  Evergreen Radon and Construction ServicesGreeley, CO | A 93How 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%95+51.8Reliability 24%95+23Value 14%100+14.1Replies to reviews 7%53+3.7Experts Score= 93Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAC | 4.94 | — |
| 6 | Reliable Solutions Home Inspections LLCGreeley, CO | A 90How 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%94+51.3Reliability 24%88+21.3Value 14%100+14.1Replies to reviews 7%51+3.6Craft & service penalty92−0.8Experts Score= 90Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAC | 4.95 | — |
| 7 |  Lords RadonGreeley, CO | A 90How 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%93+54.6Reliability 26%91+23.7Value 15%100+15.2Craft & service penalty68−3.2Experts Score= 90Not 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. | AABAA– | 4.88 | — |
| 8 | Allco Inspection ServicesGreeley, CO | A 89How 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%89+48.5Reliability 24%86+20.8Value 14%100+14.1Replies to reviews 7%96+6.8Craft & service penalty86−1.4Experts Score= 89Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAA | 4.90 | — |
| 9 |  Xtract Environmental ServicesGreeley, CO | B 78How 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 69%86+59.5Reliability 31%81+24.9Momentum penalty38−6.2Experts Score= 78Not enough data for value, replies to reviews; its weight is shared by the others.Grade B: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AA––D– | 4.94 | — |
What jobs cost
What customers paid, from the price Google asks reviewers to report.
| Job | Low25th percentile: 1 in 4 customers paid less than this. | TypicalMedian of the bill customers reported in their Google review (Google asks reviewers for a price range; we use the middle of each range). | High75th percentile: 1 in 4 customers paid more than this. | FairOf customers who rated the price, the share who chose “Great price” or “Reasonable” rather than “Overpriced”. |
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Radon Testing Services in Greeley, CO at a glance
How the 9 radon testing services we rated in Greeley, CO compare, and what customers praise most.
Experts Score grades
A = score 80+, F = below 20.
- Grade A889%
- Grade B111%
- Grade C00%
- Grade D00%
- Grade F00%
Google ratings
Average stars per company.
- 4.90★ and up889%
- 4.80–4.89★111%
- 4.60–4.79★00%
- Below 4.60★00%
What customers praise
Share of Google review highlights.
- Quality6,25324%
- Professionalism6,83826%
- Responsiveness5,67022%
- Punctuality2,62810%
- Value4,78518%
Was the price fair?
All price verdicts left with reviews.
- Great price49339%
- Reasonable73658%
- Overpriced151%
- Not sure212%
Price verdicts by year
Share calling it great / reasonable / overpriced.
How we grade
Satisfaction (54%) — Recency-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.
Reliability (24%) — How 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.
Craft & service (penalty, up to −10) — Google 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.
Value (14%) — Customers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.
Momentum (penalty, up to −10) — Penalises 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.
Replies to reviews (7%) — How 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.