HVAC contractor · Joliet, IL · reviewed since 2013
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%96+52.4Reliability 24%94+22.8Value 14%100+14.1Replies to reviews 7%58+4.1Experts Score= 93Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.93SCORE
AGradeiLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#7 of 10 boiler installersiPosition by Experts Score among all companies we track in this category. · better than 33%
5.0★★★★★351 Google reviews · 10 photos
99%five-star reviews
4.92★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.
40%reviews answered by the owner
$423typical billiMedian bill customers of this company reported in their reviews (needs 3+ priced reviews).
Google reviewers rate Maertin Heating & Cooling five stars based on 351 reviews, with the owner responding to forty percent of them. Customers frequently cite professional conduct, punctual arrivals, and clear communication regarding equipment options and pricing for furnace and AC services. Recurring themes include thorough work, clean job sites, and honest recommendations that avoid unnecessary upselling. The provided excerpts contain no low-star criticisms, as all listed reviews describe positive experiences with the company's responsive and knowledgeable staff.
Google rating: 5.0 out of 5 from 351 reviews (99% five-star).
Reviews on this page: 351 Google reviews (285 with written comments, 4 with photos).
Owner responses: the business replied to 40% 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: replies to reviews.
Maertin Heating & CoolingBoiler 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.Maertin Heating & Cooling: 96/100 on this factor. Category median: 95.A
96
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.Maertin Heating & Cooling: 94/100 on this factor. Category median: 94.A
94
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.Maertin Heating & Cooling: 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.Maertin Heating & Cooling: 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.Maertin Heating & Cooling: 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.Maertin Heating & Cooling: 58/100 on this factor. Category median: 67.C
58
Bar = this company · dark tick = category median.
Star ratings
351 Google reviews we collected
5.0of 5
5 stars34699%
4 stars41%
3 stars00%
2 stars00%
1 star10%
Praise vs complaints
Phrases our text analysis found in 285 written reviews
99%praise
Praise63899%
Complaints61%
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 price1533%
Reasonable2760%
Overpriced00%
Not sure37%
$423+86% vs typical boiler installers
Middle half of what 39 customers paid ($166–$2.1k) · gold mark = category median.
Topic share
How often each topic comes up in the written reviews
7topics
Staff & attitude17427%
Speed & response13922%
Quality & results9314%
Would recommend8113%
Communication6811%
Price & value548%
Honesty & trust355%
What customers talk about
We read 285 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.
“They are knowledgeable and recommend the right equipment for the job.”
“We initially emailed on Friday of Labor Day weekend and heard back immediately from the owner!”
“they seemed highly trained ,worked efficiently a d got the job done faster than I thought they would .”
“I was a skeptic that our house that has terrible ductwork would ever be comfortable in the summer and winter time.”
“Would definitely recommend for both maintenance and trouble shooting of ac and heating.”
“They explained all the options and once it was installed they made sure we totally understood everything and answered all questions.”
“Always friendly, timely, professional service at a fair price.”
“She assured me that if I needed to leave for my appointment I could trust Christian, and he would even put Sadie (my German Shepard back in the house…”
People customers mention
Scott16 reviews
Brett6 reviews
Rob5 reviews
Mokena4 reviews
Alec4 reviews
Rich4 reviews
praise complaint · found by our text analysis, Google review wording unchanged.
Reviews for your job
Customers hired Maertin Heating & Cooling for 8 kinds of job. Pick one to see what they paid and said.
Debbie4 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★★★★★
Everyone is very professional. They gave us several choices to choose from for both the AC and Furnace. We added an air scrubber which is amazing. They explained all the options and once it was installed they made sure we totally understood everything and answered all questions. They keep everything so clean you…
Paid $2,000+Great priceHeating system installationInstall AC
Ken12 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 a month ago★★★★★
Always have had good experience with Maertin. From the first call to work completion, everyone is knowledgeable and great communicators. Rich knows his work very well, professional, and good communicator.
Paid $2,000+Reasonable priceA/C system maintenance
EmilyLocal Guide · 80 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 months ago★★★★★
The air went out today on the hottest day so far this summer - early fall. We contacted Maertin to do a service call. Thankfully, the tech, Michael got us back up and running! He explained what was needed and was very pleasant and professional. Thank you!!!
Paid $600–800Reasonable priceA/C system repair
Mary11 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 3 months ago★★★★★
No air conditioning in the house Maertin Heating were able to come and determine the fan on furnace needed to be replaced. Since the furnace was 25 years old it was time to replace it. Interesting fact, Scott Maertin installed our furnace 25 years ago! They arrived the very next morning and installed a new furnace…
Paid $2,000+Reasonable priceHeating system repair+ Responsiveness+ Punctuality+ Quality
Michael3 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★★★★★
I chose Maertin to service my HVAC system a couple years ago. I recently had the blower motor fail during the July 4th weekend. The service tech Brett came out of the 4th and confirmed the motor failed. The motor needed to be ordered (Thank you office staff) and by Tuesday, another service tech Christian came in and…
Paid $1,200–1,400Reasonable price
Pamela1 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. · 4 months ago★★★★★
I was very pleased with the service of Maertin Heating. Techs were professional and courteous. Would recommend them.
Paid $2,000+Not sureHVAC system maintenanceA/C system maintenance
Everyone is very professional. They gave us several choices to choose from for both the AC and Furnace. We added an air scrubber which is amazing. They explained all the options and once it was installed they made sure we totally understood everything and answered all questions. They keep everything so clean you would never know they were there. Highly recommend them.
Price assessment: Great price
Price: $2,000+
Services: Heating system installation, Install AC
Response from the owner · a month ago
Thank you so much, Debbie! We're so pleased you were happy with our explanation of what we could provide and what you've had installed!
Henry Nowicki6 reviewsiTotal number of Google reviews Henry has written across all businesses on Google Maps, not just this one.
Always have had good experience with Maertin. From the first call to work completion, everyone is knowledgeable and great communicators. Rich knows his work very well, professional, and good communicator.
Price assessment: Reasonable price
Price: $2,000+
Services: A/C system maintenance
Response from the owner · 2 years ago
Hi Ken. We are glad to hear we provided you with top-notch service! We appreciate the feedback and would love to work with you again.
Dorene Towson SenesacLocal Guide · 62 reviewsiTotal number of Google reviews Dorene has written across all businesses on Google Maps, not just this one.
EXCELLENT SERVICE from the first contact! We are more than impressed! We initially emailed on Friday of Labor Day weekend and heard back immediately from the owner! (unfortunately my husband didn't see the email for the first 2 days, but that is NOT the point!) LOL! We then emailed them back and FIRST thing Tuesday morning, Alisha contacted my husband and they set an appointment to come out SAME DAY! Jason called to tell me and said, I LIKE THIS COMPANY, A LOT! I was impressed; already! So, that was promising........
*****Next phone call was Alisha calling me to let me know when Christian was headed over to our house ~~~ OMG; she was OUTSTANDING , We LAUGHED so hard we were crying and FIRST IMPRESSION; OUTSTANDING! YES; all of this over my broken AIR CONDITIONER; YES; this made for a great first impression; why because we all need some happiness and laughter in this dark world! She assured me that if I needed to leave for my appointment I could trust Christian, and he would even put Sadie (my German Shepard back in the house for me; WHO SAYS THAT?) She assured me that I could even call in my payment later, AGAIN, who says that?! I also told her some funny stories to make her laugh and YES this was all over my air conditioner NOT WORKING! The 10 minutes we spent sharing stories that had nothing to do with my air conditioner made my day so much brighter and I believe hers too; was outstanding! THEN; Christian showed up AND OMG! He was another BRIGHT LIGHT! Such a nice, young man; SOOOO polite, so professional; so smart. He was very focused; and serious about getting to work and fixing my air conditioner. He didn't mind that my deck was in shambles due to the construction or that my Sadie was barking her head off and wanted to play ~ he didn't care about anything. He was simply amazing! He figured out the problem in less than 5 minutes I think! He was done so fast; diagnosed; fixed and cleaned up and so polite. I was so impressed with him!!! We were referred by Steve the Handyman from Mokena; who is a dear friend of ours and I will say, I am so greatful for him; AGAIN with a great recommendation! THANK YOU! THANK YOU! THANK YOU to Mrs. Maertin, Alisha and Christian; YOU made this experience ABSOLUTELY WONDERFUL and we will be recommending you to EVERYONE! (and Alisha, you will be getting an invite to the wedding!!!) LOL!
Price assessment: Reasonable price
Price: $400–600
Services: A/C system repair
Response from the owner · 2 months ago
Oh my goodness, what a wonderful, joyful review! We are so very happy you are delighted with our service and our people! Alisha is already looking for a dress for the wedding!
Richard Wiatrowski1 reviewiTotal number of Google reviews Richard has written across all businesses on Google Maps, not just this one.
I had my A/C system replaced . I've got nothing but great things to say about the experience. Ive been a Maertin customer since about 2004 when someone else installed a new Trane furnace for me and I had problems with it . The guys that installed it couldn't solve it so I called Maertin and Scott came out . One visit and I never had a problem again .that's when my relationship started with them .I've never used anyone since . Back to my new A/c . The 2 young men that did the install did a beautiful job .they seemed highly trained ,worked efficiently a d got the job done faster than I thought they would . They cleaned up and when they were done you couldn't tell they were even here except for the new equipment. May I also say Scott went over the estimate with me in the beginning explaining everything to me ,gave me several equipment options and explained the job start to finish . He was here at the start of the job and came back at the end . We did a walk around to make sure I was happy and explained the warranty. I expected nothing less from these guys cause over the years they have been nothing but professional. . May I also say my wifi made me get a couple estimates and nobody even came close to Maertin . They will always be my guys for hvac work .
Price assessment: Great price
Price: $2,000+
Services: A/C system maintenance
Response from the owner · 2 months ago
Hi Richard - Thank you so much for your kind words! We are so proud to provide the service that makes you a life-long customer!
Emily MoserLocal Guide · 80 reviewsiTotal number of Google reviews Emily has written across all businesses on Google Maps, not just this one.
The air went out today on the hottest day so far this summer - early fall. We contacted Maertin to do a service call. Thankfully, the tech, Michael got us back up and running! He explained what was needed and was very pleasant and professional. Thank you!!!
Price assessment: Reasonable price
Price: $600–800
Services: A/C system repair
Response from the owner · 2 months ago
Thank you so much, Emily! We are so glad we were able to fix your AC and make your home comfortable!
Donna GaetanoLocal Guide · 16 reviewsiTotal number of Google reviews Donna has written across all businesses on Google Maps, not just this one.
I had a new furnace and A/C unit installed by Maertin Heating & Cooling in late July. As a senior citizen who previously owned and operated a small family business what I appreciated most about working with the Maertin family and employees is that they know their products and communicate what services they can provide in a professional manner. Maertin Heating gave me options on what would work best in my home and let me decide what to purchase based on my budget and needs. The customer support staff is knowledgeable, kind and responded quickly to any questions I had regarding the proposal, scheduling and warranty. Once I decided which system I wanted, I was given an installation date within a week. Maertin's installation crew showed up on time and walked through the installation with me. They were respectful of my house and left it just as they found it except for the new equipment. After the installation was complete, Scott Maertin walked me through how to use my new equipment and gave me instructions on any maintenance items I needed to do prior to their yearly maintenance checks. It's been 3 weeks since the installation and the temperature and humidity regulation in my house is definitely better than it was with my old furnace and A/C. I highly recommend Maertin Heating & Cooling.
Response from the owner · 2 months ago
Hello Donna! Thank you so much for your kind words about our service! We are very grateful for you!
Matt Hickey5 reviewsiTotal number of Google reviews Matt has written across all businesses on Google Maps, not just this one.
We have been regular customers ever since another HVAC service tried to convince my wife that he thought he heard a bearing going out. (She wasn't buying what he was selling.) We had a lot of bearings in our farm machinery when I was growing up, and I knew very well what a bad bearing sounded like and that wasn't it. Several years later that same bearing got replaced when we got a new furnace. We were schedule to travel out of town, but Scott and his team came and installed the new furnace. We returned to a warm, comfortable home. They are people you can trust.
Price assessment: Reasonable price
Services: HVAC system maintenance, A/C system maintenance, Heating system repair, A/C system repair
Response from the owner · 3 months ago
Thank you so much, Matt! We are so honored by your rating and recommendation!
Mary Ann Morrison11 reviewsiTotal number of Google reviews Mary has written across all businesses on Google Maps, not just this one.
No air conditioning in the house Maertin Heating were able to come and determine the fan on furnace needed to be replaced. Since the furnace was 25 years old it was time to replace it. Interesting fact, Scott Maertin installed our furnace 25 years ago! They arrived the very next morning and installed a new furnace and April Aire. All work was completed and left the area and my home spotless.. I still have their maintenance contract which affords a discount on repairs. Recommend highly.
Price assessment: Reasonable price
Price: $2,000+
Positive: Responsiveness, Punctuality, Quality, Professionalism, Value
Services: HVAC system maintenance
Services: Heating system repair
Response from the owner · 3 months ago
Thank you so much, Mary Ann! Scott has been the backbone of Maertin HVAC for many years now, and your wonderful words prove why! Thank you so much!
Michael Brezinski3 reviewsiTotal number of Google reviews Michael has written across all businesses on Google Maps, not just this one.
I chose Maertin to service my HVAC system a couple years ago. I recently had the blower motor fail during the July 4th weekend. The service tech Brett came out of the 4th and confirmed the motor failed. The motor needed to be ordered (Thank you office staff) and by Tuesday, another service tech Christian came in and quickly installed the motor. The entire process was fast and professional. The AC was back up and running by early afternoon. Thank you to everyone at Maertin H & C.
Price assessment: Reasonable price
Price: $1,200–1,400
Response from the owner · 4 months ago
Thank you so much, Michael! Maertin professional staff and technicians are proud to be able to serve our customers 24/7!
