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 heating system installation
Clear ✕All 30 Google reviews tagged “Heating system installation”
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…
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…
GREAT!!!!!!!!!!! Very, very professional, extremely knowledgeable, went over and above. Fast. Clean. Thorough. And a great price!!
Whole team was very professional, prompt, knowledgeable, and thorough. They did an excellent job and followed up the next day. I got exactly what I wanted and strongly recommend utilizing their services.
Always friendly, timely, professional service at a fair price.
Maertin did an absolutely wonderful job replacing two old heat exchanger furnaces with state of the art high efficiency gas furnaces. It involved complex work that required working in tight spaces. Appearance is much better than before and couldn’t be happier with the results!
Very efficient Service and same with installation of our new furnace
Called Martin Heating and Cooling for service and as always prompt service. They are great. Scott and his team are very trustworthy and knowledgeable. We have been working with them for as far as I can remember (years) and do not ever think to call anyone else with HVAC issues. Ended up replacing both furnaces…
Detailed professional installation and explanation of how the units operate
Great work installing AC & Furnace. Professional job and cleaned up like they were never there.
Scott and his team from the office to the field are very professional and organized. The project was completed on time and was a seamless installation.
This Family ran service business is absolutely the top of their class and we are Blessed to have Scott, Rich and Phil service and install our equipment. Professional, Knowledgeable neat and clean. Very Impressed
We just purchased a home that had some old electric baseboard heat that we wanted no part of. I spoke with a few different HVAC companies for quoting purposes but no one came close to comparing to the level of professionalism or responsiveness that Maertin did. From my first inquiry the scheduling team (especially…
I was a skeptic that our house that has terrible ductwork would ever be comfortable in the summer and winter time. We were told we needed new ductwork to see any improvement, which was financially overwhelming. However, Scott from Maertin told us that zoning and replacing our old a/c and furnance would help…
From start to finish the company crushed the HVAC replacement in my home. Techs were very professional and cleaned up everything when they were done. If your looked for new installs or servicing of equipment now this is the company to use!!!!!
Furnace went out late Friday night. Called Saturday morning. They were there in less than an hour. We needed a new furnace (we were well aware of that) and it was quickly installed on Monday. Very professional. Highly recommend and Thank you!
I have been a customer of Maertin Heating & Cooling for several years now. A couple years ago I had a new furnace/AC unit installed. I have them come out twice a year to have my unit cleaned and check to make sure everything is work as it should. Scott and his team are the best. Everyone in the office is great,…
I had Maertin Heating and Cooling replace my 30+ year old HVAC system this week. I met with Scott, the owner, who reviewed my current system, did all the measurements, and gave me multiple choices for the replacement. His estimate was fair, and his personal touch in providing me useful information was excellent.…
Great to deal with, timely service with excellent results!
Scott and the crew are the best good work good price all-around excellent
Polite, competent, professional they did a replacement of a 30 year old unit with out making a mess. After they left you could not see any thing out of place or any dirt left behind. I would recommend them to my family and friends.
Scott Maertin and his crew did an excellent job of installing a new furnace and air conditioner in our home. Their pricing was very competitive, they arrived on time along with being extremely thorough in their detailed explanation of how our new system works. We couldn’t be happier with our Maertin He Heating & Air Conditioning experience. Bob Hurley
So helpful from start to finish! Knowledgeable & very responsive! The work was done on time. They left no mess and were very efficient. Would highly recommend.
I could never cool or hear my ground level family room sufficiently until maertin installed the zoning system which not every company can do. So thrilled with this system and their work!
Thank you Maertin Heating After losing both our heat and hot water with an unpreventable boiler system breakdown, we are so very grateful to the speed and efficiency of service Maertin Heating offered to restore our home’s operations to better than before! We are very impressed with the new system’s operation and…
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!
Rating only, no written review.
Rating only, no written review.
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 | — |
