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%97+52.9Reliability 24%96+23.3Value 14%100+14.1Replies to reviews 7%100+7.1Experts Score= 97Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.97SCOREZark Heating & Cooling Inc.
Joliet, IL · Grade ALetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20. · #2Position by Experts Score among all companies we track in this category. of 10 boiler installers · 5.0★ from 891 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: reliability.
Reviews for your job
Customers hired Zark Heating & Cooling Inc. for 8 kinds of job.
Zark Heating & Cooling Inc. for installation
Clear ✕All 24 Google reviews tagged “Installation” · showing 20
The guys were here just before 7 o’clock as I said, and went to work quickly. They worked continuously to install both units and an air filter and humidifier and now I’m sitting in a nice warm house again. Rob said if I have any problems with it to let him know, fingers crossed I don’t have any. Rob, Zach and…
They over charge, do not do a good job with their diagnoses, the one guy they kept sending had a condescending attitude. Whatever they did when they installed our very expensive ac unit lead to all sorts of issues they didn’t want to fix then it became a problem for them when we called another company that found the…
Friendly, professional, show up on time, listened to my HVAC issues. Fixed issues. Got a new system Installed and it’s amazing. Would definitely recommend. Zach, Connor and Rob are amazing! Thanks for cooling us down! You guys are the best!
I cannot say enough good things about Zark Heating & Cooling. Rob, the owner, personally met us at our business and was involved every step of the way. From the beginning, he and his entire crew were extremely responsive, punctual, and professional. Our business was in a very difficult situation, and Zark came in,…
PHENOMENAL CUSTOMER SERVICE & JOB WELL DONE!! Rob & company were extremely prompt to respond to my emails, texts & calls even on a Sunday!!! I would HIGHLY recommend Zark Heating & Cooling for all your HVAC needs!!! We utilized their services after Rob was able to send me a quote almost immediately after sending…
They are very professional. Quality work and equipment. They clean up nicely when done. I will recommend them to everyone.
Been using Zark for the last couple of years for routine maintenance. The time came to have to replace the furnace and AC, and there was no other choice for me. Zark is an exceptional company! They hit high marks in every area. They care about their customers, offer great pricing, and their customer service is…
5 ⭐️ service from beginning to end. We had 4 different quotes for an AC/Furnace and water heater replacement and Zark provided the best price along with warranty and professionalism that makes a stressful situation feel so much better. We worked with Bill, Rob and Zach and they made sure my wife and I felt…
Rob and his crew installed a A/C and furnace at my home. They had it finished in about 5 hours. I cannot say enough about the communication and service they provided. ++++ Rating!! I was very pleased and will be spreading the word to my friends and neighbors.
Just had a boiler for radiant heat installed. Zark had outstanding customer service and workmanship. It’s clearly evident that this company cares about its customers and stands by their work. I was kept informed and updated at every step of the install. They made sure to answer all of my questions. They were very…
Big thanks to Zark heating & Cooling! Replaced the A Coil and got our A/C up and running! So appreciate the fast and professional service! Your maintenance program is the best, always on top of problems!! Highly recommend Zark Heating and Cooling Inc...They are there when you need them!
Just had my fall furnace tune up. Alex did a terrific job. He was friendly, polite and very efficient. Being on Zark's maintenance plan really saves money too! 2 more years of great service as of April 2024. They're the best around
Zark Heating and Cooling installed a new furnace, new A/C system and a tankless hot water heater. The job was done flawlessly and professionally! I highly recommend Zark!
We’re happy with our new HVAC system. Our old unit was 30 years old and not keeping the full house cool too well. It was a full day install and the crew were great and walked us through the new system. Will use Zark again.
I have used Zark time and time again! Professional, courteous, on time, and explains everything they are doing. Dan and his teammate did an awesome job installing my garage heater. I had a couple of requests regarding the install and they did everything I had asked. Keep up the great work Zark! You won't be dissapointed when using this company!
Rob from Zark installed my whole house humidifier at a great price. He has been servicing my heat and air ever since and everything has been running great. Best place around.
We have used ZARK every time we have had any HVAC needs. We have also referred them to family and friends. They have never disappointed. They go above and beyond for their customers especially when there is an HVAC problem during severe weather. They are a family owned business who are trustworthy and fair. All around great people who do great work!
We very suddenly needed our furnace and air replaced this week and everyone was so incredibly nice and responsive. 100% would recommend to use this company. Professional, very responsive and timely, and friendly!
These guys were absolutely amazing. Fairly priced for the amount of care they put into their work and my home. Would absolutely turn to them when we need servicing! Keith and Dan were super patient with us as new homeowners and answered our many many questions. Great company - don't bother looking elsewhere!!
Dan was great to work with. He was on time, professional, and did a clean & thorough job. He also took the time to explain everything to me after he was done.
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 | 144 | $37–$264 |
| HVAC system repair | 93 | $145–$618 |
| Heating system installation | 75 | $1.4k–$2.8k |
| Install AC | 73 | $1.6k–$3.2k |
| Heating system maintenance | 67 | $37–$317 |
| A/C system maintenance | 66 | $39–$318 |
| Heating system repair | 63 | $78–$745 |
| A/C system repair | 45 | $216–$611 |
