HVAC contractor · Joliet, IL · reviewed since 2018
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%95+51.8Reliability 24%93+22.5Value 14%100+14.1Replies to reviews 7%100+7.1Experts Score= 96Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.96SCORE
AGradeiLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#4 of 10 boiler installersiPosition by Experts Score among all companies we track in this category. · better than 67%
5.0★★★★★394 Google reviews · 24 photos
99%five-star reviews
4.95★last 12 monthsiAverage stars on reviews from the last 12 months only.
1.2%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.
96%reviews answered by the owner
$248typical billiMedian bill customers of this company reported in their reviews (needs 3+ priced reviews).
Google reviewers rate Comfort Zone Service five stars based on 394 reviews, with the owner responding to 96% of comments. Customers frequently praise the technicians for punctuality, clear communication, and reasonable pricing during furnace maintenance, repairs, and equipment installations. Recurring themes highlight professional behavior and thorough explanations of HVAC systems. However, a small number of low-star reviews criticize aggressive upselling tactics and instances where repairs required multiple paid return visits to resolve the same issue.
Google rating: 5.0 out of 5 from 394 reviews (99% five-star).
Reviews on this page: 394 Google reviews (259 with written comments, 4 with photos).
Owner responses: the business replied to 96% of reviews.
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: reliability.
Comfort Zone ServiceBoiler Installers 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.Comfort Zone Service: 95/100 on this factor. Category median: 95.A
95
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.Comfort Zone Service: 93/100 on this factor. Category median: 94.A
93
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.Comfort Zone Service: 100/100 on this factor. Category median: 100.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.Comfort Zone Service: 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.Comfort Zone Service: 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.Comfort Zone Service: 100/100 on this factor. Category median: 67.A
100
Bar = this company · dark tick = category median.
Star ratings
394 Google reviews we collected
5.0of 5
5 stars38999%
4 stars21%
3 stars00%
2 stars00%
1 star31%
Praise vs complaints
Phrases our text analysis found in 259 written reviews
99%praise
Praise53199%
Complaints41%
PriceiGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.
Price verdicts customers left with their Google review
98%fair
Great price6138%
Reasonable8754%
Overpriced32%
Not sure96%
$248+9% vs typical boiler installers
Middle half of what 127 customers paid ($39–$656) · gold mark = category median.
Topic share
How often each topic comes up in the written reviews
7topics
Staff & attitude14427%
Quality & results10319%
Speed & response9618%
Would recommend6212%
Communication6011%
Honesty & trust367%
Price & value346%
What customers talk about
We read 259 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.
“Great service and price, kind and knowledgeable technicians.”
“What a fantastic job Josh did with joining the annual maintenance for my furnace.”
“Professional, courteous, knowledgeable, always on time.”
“I have purchased new HVAC equipment and had my annual services done with Comfort Zone for a few years now and I'll be a loyal customer for life.”
“Finally someone that spent some actual, real time with the unit, and who took the time to explain things as well as show me pictures.”
“He’s very transparent, professional, and goes out of his way to explain things.”
“They are always timely, professional, and accurate in their work, and fair in their pricing.”
People customers mention
Josh23 reviews
Berg8 reviews
Tim7 reviews
Chad7 reviews
Glenn4 reviews
Jordan4 reviews
praise complaint · found by our text analysis, Google review wording unchanged.
Reviews for your job
Customers hired Comfort Zone Service for 8 kinds of job. Pick one to see what they paid and said.
Cathy5 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 day ago★★★★★
I’ve had different companies coming out every year since I’ve lived here for the annual cleaning. Finally someone that spent some actual, real time with the unit, and who took the time to explain things as well as show me pictures. Josh was the best! As are the girls in the office. Would give a 10 if I could!
Paid $1–200Great priceHVAC system maintenance
John7 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 days ago★★★★★
Josh from comfort zone was polite and friendly. He was very professional and informative. I will definitely use comfort zone again.
Paid $1–200Great priceHVAC system maintenance
Joanne7 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 days ago★★★★★
What a fantastic job Josh did with joining the annual maintenance for my furnace. He answered all my questions and informed me of all the work he did. I would use Comfort Zone in the future for my household needs. Thank you Josh
Joanne
Paid $1–200Great priceHeating system maintenance
Mitch11 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. · Edited 4 days ago★★★★★
Josh came out today for furnace maintenance. He was grest answering all my questions. This is my second service from comfort zone , good people. Glenn came out for furnace maintenance. I'll be using comfort zone for all my HVAC services! Thanks Glenn
Paid $1–100Great priceHVAC system maintenance
Ayush11 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. · 2 weeks ago★
I've been a comfort zone customer for a while now and appreciated Glen's honesty and his way of running a business. Last few years it has been a bad experience with the company, mostly with the technicians they send out for the tuneups. Every technicians are trying to upsell the services and products and create an…
Paid $200–400HVAC system maintenance
Andre2 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. · Edited 2 weeks ago★★★★★
Great experience every time when called upon!
Great experience again w/Comfort Zone. Josh came out, answered questions and handled the service check like a champ.
Josh explained everything very well. It's unfortunate that I had no idea the amount of work that's involved in such a project. I'll keep saving my pennies and who knows, I may call you back. Thanks for coming out.
Price assessment: Not sure
Response from the owner · 5 hours ago
Thanks, Philip! We appreciate Josh taking the time to walk you through everything so you had a clear picture of what the project involves. Whenever you're ready, give us a call and we'll be happy to pick up right where we left off.
Cathy Marshall5 reviewsiTotal number of Google reviews Cathy has written across all businesses on Google Maps, not just this one.
I’ve had different companies coming out every year since I’ve lived here for the annual cleaning. Finally someone that spent some actual, real time with the unit, and who took the time to explain things as well as show me pictures. Josh was the best! As are the girls in the office. Would give a 10 if I could!
Price assessment: Great price
Price: $1–200
Services: HVAC system maintenance
Response from the owner · 13 hours ago
Thanks, Cathy! Glad Josh gave your annual cleaning the attention it deserved and walked you through everything with pictures. That is exactly how a heating maintenance visit should go. We will make sure he sees this -- and the girls in the office will love hearing it too. Give us a call whenever you need us!
Linda Brandys8 reviewsiTotal number of Google reviews Linda has written across all businesses on Google Maps, not just this one.
I will definitely recommend this company. Chad was great. Knowledgeable, professional, quick and friendly. Prices very reasonable. Everyone that has done repairs, replacements, talked to me from the office for scheduling have been knowledgeable about their part of the company's service. A-1 rating from me.
Positive: Responsiveness, Punctuality, Quality, Professionalism, Value
Services: Heating system installation
Response from the owner · 3 years ago
Thank you so much, Linda! The ultimate compliment is your referral, please share our info!
John Kearns7 reviewsiTotal number of Google reviews John has written across all businesses on Google Maps, not just this one.
Josh from comfort zone was polite and friendly. He was very professional and informative. I will definitely use comfort zone again.
Price assessment: Great price
Price: $1–200
Services: HVAC system maintenance
Response from the owner · a day ago
Thank you so much for the fantastic 5-star review, John! We're happy to hear that Josh provided you with polite and professional service. It's great to know you'll be choosing Comfort Zone Service again. We look forward to serving you in the future!
Joanne Regan7 reviewsiTotal number of Google reviews Joanne has written across all businesses on Google Maps, not just this one.
What a fantastic job Josh did with joining the annual maintenance for my furnace. He answered all my questions and informed me of all the work he did. I would use Comfort Zone in the future for my household needs. Thank you Josh
Joanne
Price assessment: Great price
Price: $1–200
Services: Heating system maintenance
Response from the owner · a day ago
Thank you so much for your wonderful review, Joanne! We're thrilled to hear that Josh did a fantastic job with your furnace maintenance and that he took the time to answer all your questions. Your trust in Comfort Zone Service means a lot to us, and we can't wait to assist you again in the future!
Mitch Jedlecki11 reviewsiTotal number of Google reviews Mitch has written across all businesses on Google Maps, not just this one.
Josh came out today for furnace maintenance. He was grest answering all my questions. This is my second service from comfort zone , good people. Glenn came out for furnace maintenance. I'll be using comfort zone for all my HVAC services! Thanks Glenn
Price assessment: Great price
Price: $1–100
Services: HVAC system maintenance
Response from the owner · Edited a day ago
Thank you so much for the fantastic 5-star review, Mitch! We're thrilled to hear that Josh and Glenn made such a positive impression during your furnace maintenance with Comfort Zone Service. We look forward to serving you for all your HVAC needs in the future!
Jeff Barnes10 reviewsiTotal number of Google reviews Jeff has written across all businesses on Google Maps, not just this one.
The company is 5 stars all the way around. From the group that takes the call down to Julian the technician. On time, informative and pleasant to work with.
Price assessment: Reasonable price
Services: A/C system maintenance
Response from the owner · 5 months ago
Thank you so much for your fantastic 5-star review, Jeff! We're thrilled to hear that you had a great experience with Comfort Zone Service. It's wonderful to know that our team, including Josh, provided you with timely and informative service. Your kind words motivate us to keep delivering the best! We appreciate your support!
rudejudka7 reviewsiTotal number of Google reviews rudejudka has written across all businesses on Google Maps, not just this one.
Great job on new furnace very pleased with everything
Price assessment: Great price
Price: $2,000+
Services: Heating system installation
Response from the owner · 6 days ago
Thank you so much for the fantastic review, rudejudka! We're thrilled to hear that you're pleased with your new furnace and our service at Comfort Zone Service. Your satisfaction means a lot to us! If you ever need anything else, feel free to reach out.
John Hendrickson3 reviewsiTotal number of Google reviews John has written across all businesses on Google Maps, not just this one.
