The Best Indoor Air Quality Testing Services
We graded 9 companies on seven things customers actually report: satisfaction, reliability, workmanship, value, momentum, track record and how owners handle complaints.
From 30,182 Google reviews of 9 top-rated indoor air quality testing services nationwide. Updated November 5, 2026.
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Best indoor air quality testing services for sprinkler system inspection
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GreenWorks Inspections & EngineeringHow Job match is calculatedBuilt only from reviews Google tagged “Sprinkler system inspection”:Stars on this job 55%5.00★Number of such jobs 25%66Overall Experts Score 20%91Job match= 98Stars are pulled toward the category average (4.96★) 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.98
Inspect360How Job match is calculatedBuilt only from reviews Google tagged “Sprinkler system inspection”:Stars on this job 55%4.92★Number of such jobs 25%50Overall Experts Score 20%93Job match= 91Stars are pulled toward the category average (4.96★) 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.91Job match = this company’s ★ on reviews Google tagged “Sprinkler system inspection” (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 sprinkler system inspection
GreenWorks Inspections & Engineer…Ryan was very detailed and thorough with his inspection. He took the time to walk us through the inspection report, clearly explaining each item and sharing his experience to help us understand which issues were actual concerns and which were less significant. He was also very patient with all of our questions and…
Inspect360Blake has been my preferred home inspector for my clients for the past couple of years. He is thorough, knowledgeable and communicates effectively. He is also available for follow up questions after the inspection. I highly recommend him and the whole Inspect360 team (scheduling staff is excellent).
GreenWorks Inspections & Engineer…Ryan Hawkins was absolutely terrific on our house inspection. Very professional, knowledgeable, thorough and best of all, personable. His communication ability made us feel comfortable with his findings and his recommendations. He took his time to show us some of the punch list to make sure we understood what…
GreenWorks Inspections & Engineer…⭐⭐⭐⭐⭐ We had a great experience with Blake Yarbrough. He was such a nice guy and genuinely took his time with the inspection. He went through the house thoroughly and paid attention to even the smallest details. I never felt like he was rushing through it just to get it done. Blake also took the time to explain…
Inspect360Peter Miller was awesome, he was patient willing answered all of our questions. He even gave us some recommendations on what to ask for during the build.
GreenWorks Inspections & Engineer…Andrew Shepler did an amazing job with my inspection on my new home! He was extremely detail oriented and he also was super patient and answered every question I had. 10/10 would absolutely go through Greenworks again if I ever need another inspection!
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 indoor air quality 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 |  Mold Testing & Mold Removal Services DallasFort Worth, TX | A 100How 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%99+25.8Value 15%100+15.2Craft & service penalty99−0.1Experts Score= 100Not 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 |  PureairifyNorth Richland Hills, TX | A 100How 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%100+69.2Reliability 31%99+30.5Experts Score= 100Not enough data for value, 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. | AA–––– | 5.00 | — |
| 3 |  Texas Mold Testing, LLCFort Worth, TX | 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%99+25.8Value 15%99+15.1Craft & 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 | — |
| 4 |  HomeTeam Inspection ServiceFort Worth, TX | A 98How 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%99+24Value 14%100+14.1Replies to reviews 7%84+5.9Experts Score= 98Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAA | 4.97 | — |
| 5 |  Prestige AirNorth Richland Hills, TX | 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 55%97+52.9Reliability 24%96+23.3Value 14%100+14.1Replies to reviews 7%96+6.8Experts Score= 97Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAA | 4.97 | $325 |
| 6 | Inspect360North Richland Hills, TX | 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%94+51.3Reliability 24%89+21.6Value 14%100+14.1Replies to reviews 7%100+7.1Craft & service penalty92−0.8Experts Score= 93Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAA | 4.94 | — |
| 7 |  Ninja Kidz Action ParkNorth Richland Hills, TX | 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 64%97+61.6Reliability 28%97+27.4Replies to reviews 8%47+3.9Experts Score= 93Not 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. | AA––AC | 4.96 | — |
| 8 | GreenWorks Inspections & EngineeringFort Worth, TX | A 91How 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%93+50.7Reliability 24%88+21.3Value 14%100+14.1Replies to reviews 7%81+5.7Craft & service penalty91−0.9Experts Score= 91Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAA | 4.92 | — |
| 9 |  Mold Test DFWNorth Richland Hills, TX | A 84How 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%86+50.5Reliability 26%78+20.3Value 15%100+15.2Momentum penalty80−2Experts Score= 84Not 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. | AB–AA– | 4.87 | — |
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”. |
|---|---|---|---|---|
| HVAC system maintenance | $18 | $47 | $276 | 100% |
| HVAC system repair | $198 | $498 | $860 | 100% |
Indoor Air Quality Testing Services at a glance
How the 9 indoor air quality testing services we rated compare, and what customers praise most.
Experts Score grades
A = score 80+, F = below 20.
- Grade A9100%
- Grade B00%
- 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.
- Quality1,35424%
- Professionalism1,49426%
- Responsiveness1,29823%
- Punctuality5459%
- Value1,04818%
Was the price fair?
All price verdicts left with reviews.
- Great price27445%
- Reasonable31953%
- Overpriced41%
- Not sure102%
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.