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 thermostat installation
Clear ✕All 10 Google reviews tagged “Thermostat installation”
ZARK HVAC was excellent. Extremely professional, friendly and did excellent work. Highly recommend them!
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…
Great customer service, very friendly and easy to work with. They did a fantastic job with the installation of our A/C and furnace. We would definitely recommend Zark! Thank you.
Alex, Luis, and Zach did an amazing job on installing my garage heater. All 3 were very courteous and professional. Definitely recommend! Thanks guys!
I've been a customer for many years and can't say enough about the professionalism and quality.
Great to work with. Very professional from start to finish. Excellent communication!! Highly recommend this company.
Excellent customer service, quality work & product! I would use Zark again in a heartbeat! Can’t say 1 negative thing.
Zark Heating and Cooling has maintained my furnace and AC for a number of years and have been able to update my water heater when it started to leak. By handling my furnace maintenance they were able to foresee when I was in need of a new furnace and humidifier. I recommend them to my family and friends. Their associates are friendly and knowledgeable.
Very impressed with Zark’s team that they sent out. Dan who was the lead installer took his time on installing the new furnace and A/C system and everything came out looking great and professional. Great experience. Highly recommend!
From start to finish, Zark was great to work with on getting a new HVAC system and water heater. Bill Jacobs was patient and thorough in answering our questions. Rob Bogda was great in setting up a quick install. We especially appreciated the advice, thoroughness and care that Dan Leja provided when doing our installation. His work was outstanding!
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 |
