How 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.93SCOREMaertin Heating & Cooling
Joliet, IL · Grade ALetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20. · #7Position by Experts Score among all companies we track in this category. of 10 boiler installers · 5.0★ from 351 Google reviews
Report card
Percentile vs other boiler installers (100 = best)Each 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.
Reviews for your job
Customers hired Maertin Heating & Cooling for 8 kinds of job.
Maertin Heating & Cooling for a/c system repair
Clear ✕All 26 Google reviews tagged “A/C system repair”
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…
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!!!
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…
I’ve used Maertin several times over the years and have never been dissatisfied. Always professional, prompt and thorough. Pricing is good. Would definitely recommend for both maintenance and trouble shooting of ac and heating. The last week of June of 2026 my 22 yr old plus AC failed. Couldn’t have been worse…
Made an appointment within 24 hours. The technician was on time and very knowledgeable. That’s not the first nor the last time I will use Maertin Heating and Cooling.
The 2 employees were courteous, careful and informative on what repair work was needed. It was done quickly, not expensive and correctly. Best of all, the a//c works. Thanks Maertin...
Rich did a great job. Found the problem quickly and made the repairs. He was very knowledgeable.
Brett did a great job troubleshooting what was wrong with my A/C system and getting it fixed quickly. He was super friendly as were the ladies in the office. Great communication and a great price to get my A/C fixed. I can’t recommend the team at Maertin enough.
Never disappointed with their service. They have the most helpful and professional staff with the utmost integrity. I will always give them my business.
Both Steve and Alec were wonderful. They explained everything to us, arrived on time, did the work on a timely basis
In this hot weather and no air. Came early and found the problem explained what he was going to do. Bill did a excellent job so pleased. Great company and staff.
From service request to service completion was fast! Technician was courteous and informative; he answered all of our heating & air questions. Will use this company again.
Paul did a great job for us repairing our A/C!
Quickly identified the problem with ten year old A/C. Explained what he was doing at each step. Very polite and knowledgeable.
I am very pleased with the quality and professional service I received. Paul attended to our latest service call and was very prompt and efficient. I highly recommend Maertin Heating & Cooling for all your HVAC needs.
Service has everything to do with who you choose for your heating and air-conditioning. Scott and his team are like family to us, they have come to the rescue quite a few times over the years. Scott has always gone out of his way to help us with advice, making adjustments, and servicing our HVAC systems.
I have used this company for many years and I am completely satisified with their excellent customer service and relations, on time for call, highly knowledgably about my system and its history!
Responsive, professional and efficient!
Great service, great technician, just an all around quality business!
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Price
Bar = middle half of what customers paid · gold mark = category median.
Price verdictsGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.
Jobs customers hired them for
| Job | Reviews | Category typical |
|---|---|---|
| HVAC system maintenance | 41 | $37–$264 |
| A/C system maintenance | 40 | $39–$318 |
| Heating system maintenance | 31 | $37–$317 |
| Heating system installation | 29 | $1.4k–$2.8k |
| Heating system repair | 29 | $78–$745 |
| A/C system repair | 25 | $216–$611 |
| Install AC | 24 | $1.6k–$3.2k |
| Install thermostat | 16 | — |
