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 a/c system repair
Clear ✕All 45 Google reviews tagged “A/C system repair” · showing 20
Honest and professional work! They've done a water heater replacement, AC repair, and furnace maintenance for us. Can't recommend them enough! Same great service on 9/10/26, they were able to get our shop AC up and running quickly! Bill was knowledgeable and through. Excellent job again.
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…
They were quick and got it fixed same day. Also appointment very next day 10/10 recommend
I'm so happy I followed a friend's recommendation to try Zark Heating & Cooling for my AC repair. My technician,Zack, was professional, competent, & efficient. Everything was completed to my satisfaction!
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,…
I couldn’t be more pleased with the installation of our new furnace and a/c unit. Zark Heating was absolutely wonderful to work with. Very responsive to my questions and their communication with me was outstanding!!! Dan was always very responsive and informative, no matter how busy he was. It is such a relief to…
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…
We've been using Zark Heating & Cooling for our primary residence and rental property for multiple years. They provide professional, quality, and timely service at affordable prices. I'd highly recommend signing up for their maintenance plan which will keep your HVAC equipment running smoothly! (A few times…
I have had bad experiences with HVAC companies in the past. I looked in our towns Facebook group for recommendations when our A/C was not cooling. 80% of the people recommended Zark so I called them.They were out the next day, on time and fixed my issue! Zach the technician even tweaked a few other things that the…
This company is tops in customer service, timely installation and repair and fair pricing. The labor they provide is highly skilled and very impressive. Don’t bother comparing, they are the BEST!!
Awesome company to do business with. The team at Zark treats you like family and always looks out for your best interest. Recently had a new AC installed and their team did a fantastic job.
Dan and Keith did a great job today. Top quality professional work and they answered all my questions. I highly recommend Zark and I will use them again for all my HVAC needs.
Update: Zark is absolutely the best value around. I am not sure if everyone gets the same great deal we did, but I am sure glad I've used Zark in the past for repairs. Rob and Zach were at my door at 7am and done installing my new furnace and air conditioner by noon. Zark Heating and Cooling was the lowest of 3 bids…
Top notch service and communication. Highly recommend.
Zark Is my family’s Number one company that we turn to for our heating and cooling needs. No matter what they have always been there for us, even if it’s just a response to resolve a quick problem through Facebook messenger! We have used them in the past and will definitely be using them again in the future whenever an issue arises with our aging systems.
Pedro. S from Zark is the best! My AC went out during an extremely hot day, and he provided excellent service and fixed our problem efficiently and quick. He was very respectful, kind, and worked hard to help solve the issue. I would recommend Pedro to anyone needing service from Zark!
Our AC went out with the hottest week of summer coming. I called them before they opened and very nice guy took my call, scheduled a service visit for the same morning and I got my AC fixed. Call them! You won't regret it!
All of our questions were answered, Pedro was professional, courteous, and had our house cooled down in no time. Thank you Pedro and Zark.
Awesome service, honest company! My A/C went out on July 5th. I called Zark and they quickly came out. The unit couldn't be repaired but they did their best to get it working until a replacement could be installed. The replacement day came and it was POURING rain. The Zark technicians worked in the pouring rain…
I have used Zark Heating & Cooling a few times over the last few years. They are always quick to respond. The service is always great and prices are reasonable.
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 |
