iHow 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%99+24Value 14%100+14.1Replies to reviews 7%87+6.2Experts Score= 97Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.97SCORE
AGradeiLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#26 of 82 radon testing servicesiPosition by Experts Score among all companies we track in this category. · better than 69%
5.0★★★★★169 Google reviews · 24 photos
98%five-star reviews
5.00★last 12 monthsiAverage stars on reviews from the last 12 months only.
0%1–2★ in 2 yearsiShare of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
A-1 Radon holds a 5/5 rating from 169 reviews, with the owner responding to 86% of them. Customers frequently praise the company for professional service, clear communication, and fair pricing during radon mitigation and central vacuum installations. Technicians are described as punctual, efficient, and honest, often resolving issues quickly while leaving clean work sites. One lower-rated review notes that phone staff can appear rude when refusing service calls due to high demand, advising callers to wait for weather changes before requesting a visit.
Google rating: 5.0 out of 5 from 169 reviews (98% five-star).
Reviews on this page: 169 Google reviews (151 with written comments, 11 with photos).
Owner responses: the business replied to 86% of reviews.
Most recent review: October 9, 2026.
Service: Radon Testing Service serving Milwaukee, Wisconsin.
Data from Google, last updated November 10, 2026.
Score profile vs other radon testing services
Score per factor (100 = best)iEach 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: craft & service and value; weakest: replies to reviews.
A-1 RadonRadon Testing Services median0 = centre, 100 = best
SatisfactioniSatisfaction · 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.A-1 Radon: 97/100 on this factor. Category median: 95.A
97
ReliabilityiReliability · 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.A-1 Radon: 99/100 on this factor. Category median: 94.A
99
Craft & serviceiCraft & 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.A-1 Radon: 100/100 on this factor. Category median: 99.A
100
ValueiValue · 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.A-1 Radon: 100/100 on this factor. Category median: 100.A
100
MomentumiMomentum · 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.A-1 Radon: 100/100 on this factor. Category median: 100.A
100
Replies to reviewsiReplies 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.A-1 Radon: 87/100 on this factor. Category median: 87.A
87
Bar = this company · dark tick = category median.
Star ratings
169 Google reviews we collected
5.0of 5
5 stars16598%
4 stars32%
3 stars11%
2 stars00%
1 star00%
Praise vs complaints
Phrases our text analysis found in 151 written reviews
99%praise
Praise34499%
Complaints21%
PriceiGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.
Price verdicts customers left with their Google review
100%fair
Great price829%
Reasonable1968%
Overpriced00%
Not sure14%
Topic share
How often each topic comes up in the written reviews
7topics
Speed & response8324%
Staff & attitude7421%
Would recommend5917%
Quality & results5416%
Price & value3610%
Communication298%
Honesty & trust113%
What customers talk about
We read 151 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.
“They are very quick and professional and very affordable!”
“They’re extremely professional and communication is on point.”
“The price was extremely fair for the work that was done and I would recommend them to anyone.”
“This company did an excellent job of installing a radon remediation system in our home.”
“Hands down, A-1 Radon was the most competitively priced, most knowledgeable service provider out there.”
“He was very helpful in explaining that Beam was no longer in business but that dealers were partnering with a company in Ohio.”
“A-1 gave me an honest opinion on replacement vs a service call to evaluate vs living with it until it became unbearable.”
People customers mention
Adam22 reviews
Mitch3 reviews
praise complaint · found by our text analysis, Google review wording unchanged.
Reviews for your job
Customers hired A-1 Radon for 2 kinds of job. Pick one to see what they paid and said.
NLocal Guide · 25 reviewsiTotal 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 month ago★★★★★
I highly recommend having A-1 mitigate your radon. They’re extremely professional and communication is on point. The work is very clean and concise. Job well done!
Tanya3 reviewsiTotal 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 months ago★★★★★
I have not only referred A1 Radon to clients but have recently used them for my own home! They are very quick and professional and very affordable! Great job guys and thank you for piece of mind!)
Great price
Brenda10 reviewsiTotal 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★★★★★
We recently had a fan installed, and I couldn't be more pleased with the experience. From the initial consultation through the final installation, the team was professional, knowledgeable, and courteous.
The quality of the installation was excellent. The system is working exactly as promised. Highly recommend!
Reasonable priceFan installation
JohnLocal Guide · 88 reviewsiTotal 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★★★★★
Was getting readings as high as almost 7 in my basement. We called A1 and the gentleman I spoke with asked several questions and had me send photos of my drain tile system and sump pump crock. He was able to determine exactly what we needed which meant a larger fan due to a replaced drain tile. The guy who installed…
Reasonable price
Chris1 reviewiTotal 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★★★★★
I called about someone coming out to check our over 20 yr old abatement system just to see if it was working properly. Instead of paying for a service call that might not be needed, Adam suggested I get an electronic gauge to measure the radon level and sent me a link to order one. It turns out our radon levels are very low.
Service not listed
DanielLocal Guide · 21 reviewsiTotal 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. · 10 months ago★★★★★
Didn’t even have to come out! Incredible phone trouble shooting that saved me hundreds - thank you so much!
I highly recommend having A-1 mitigate your radon. They’re extremely professional and communication is on point. The work is very clean and concise. Job well done!
Response from the owner · a month ago
Thank you so much for the recommendation! We are thrilled to hear you were pleased with our communication and your radon mitigation system.
Tanya Schroeder3 reviewsiTotal number of Google reviews Tanya has written across all businesses on Google Maps, not just this one.
I have not only referred A1 Radon to clients but have recently used them for my own home! They are very quick and professional and very affordable! Great job guys and thank you for piece of mind!)
Price assessment: Great price
Response from the owner · 3 months ago
Thank you so much for the review, Tanya! We truly appreciate your referrals and are so glad we could provide peace of mind for your own home as well.
Brenda Lutz10 reviewsiTotal number of Google reviews Brenda has written across all businesses on Google Maps, not just this one.
We recently had a fan installed, and I couldn't be more pleased with the experience. From the initial consultation through the final installation, the team was professional, knowledgeable, and courteous.
The quality of the installation was excellent. The system is working exactly as promised. Highly recommend!
Price assessment: Reasonable price
Services: Fan installation
Response from the owner · 4 months ago
Thank you, Brenda! We're thrilled to hear that you had a great experience with our team and that your system is working well. We appreciate your recommendation!
John PLocal Guide · 88 reviewsiTotal number of Google reviews John has written across all businesses on Google Maps, not just this one.
Was getting readings as high as almost 7 in my basement. We called A1 and the gentleman I spoke with asked several questions and had me send photos of my drain tile system and sump pump crock. He was able to determine exactly what we needed which meant a larger fan due to a replaced drain tile. The guy who installed it was friendly and efficient. Took less than 2 hours. We are very happy with our new readings at .35. $1500 well spent. Thank you A1!!!
Price assessment: Reasonable price
Response from the owner · 4 months ago
Thank you for the great review, John! We're thrilled to hear you're happy with the radon mitigation system and seeing such fantastic results. We appreciate your business!
Chris1 reviewiTotal number of Google reviews Chris has written across all businesses on Google Maps, not just this one.
I called about someone coming out to check our over 20 yr old abatement system just to see if it was working properly. Instead of paying for a service call that might not be needed, Adam suggested I get an electronic gauge to measure the radon level and sent me a link to order one. It turns out our radon levels are very low.
Services: Service not listed
Response from the owner · 8 months ago
Thank you for the fantastic review, Chris! We're glad Adam could help you find a solution. If you need anything else, feel free to reach out!
Daniel PeraltaLocal Guide · 21 reviewsiTotal number of Google reviews Daniel has written across all businesses on Google Maps, not just this one.
This company did an excellent job of installing a radon remediation system in our home. Scott and Mitch did the installation professionally and with zero mess left behind. We were presented with options of where to place the system and we are very pleased with the outcome as well as the system’s performance. Our radon level is already considerably lower. We recommend this company.
Price assessment: Reasonable price
Services: Fan installation
Response from the owner · a year ago
Thank you for your wonderful review, Michele! We're thrilled to hear that you're pleased with the radon mitigation system and the work from Scott and Mitch. Your recommendation means a lot to us!
Preston Knapp5 reviewsiTotal number of Google reviews Preston has written across all businesses on Google Maps, not just this one.
When I called Adam was extremely helpful and willing to talk to me about the entire situation and provided advice. When they came out to do the work, they were very professional and courteous, took care of everything and had great attention to detail, they really made sure that everything was covered. The price was extremely fair for the work that was done and I would recommend them to anyone.
Response from the owner · a year ago
Thank you for the kind words, John! We're glad to hear you had a great experience with us. We appreciate your recommendation!
