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Zark Heating & Cooling Inc. has a strong track record as an HVAC contractor based in New Lenox, serving the Chicagoland area — Specializes in plumbing. One reviewer writes: "When my furnace went out I felt good about calling them." Reviewers consistently praise the quality of their work. Homeowners frequently mention Rob by name for standout service. Homeowners praise on-time delivery and budget discipline. Job site cleanliness is a recurring positive in reviews. Clients describe fair pricing that matches the scope and quality of work. Responds to reviews personally, which reflects a commitment to reputation and accountability. Reviewers say the estimates were accurate and the process was upfront.
HVAC projects typically cost $3K – $15K in Chicagoland
Jose De La Rosa
44 reviews
New Lenox, Chicago
No recurring concerns found across reviews. This contractor maintains a consistently positive reputation.
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“Great for the 1st visit I will definitely recommend Zark heating and cooling.”
“I had Zack show up within 30 min of my call for a repair, he was friendly, professional and most importantly honest.”
I had Zack show up within 30 min of my call for a repair, he was friendly, professional and most importantly honest. Do not waste time looking around for a HVAC company, just call Zark.
Guy Francone
Jan 2026
“Rob and his partner were here within 45 minutes to fix our furnace when it went out.”
Rob and his partner were here within 45 minutes to fix our furnace when it went out! Problem was fixed and furnace was working within two hours of calling. Great service! Thanks
Jason Bonavia
Jan 2026
“We called Zark because our furnace was blowing cold air.”
We called Zark because our furnace was blowing cold air. Zach cleaned the furnace and advised some possible parts to replace if the cleaning doesn’t help. He also provided estimates for a new unit. We signed up for the annual plan and hope we don’t need to see them until the spring!
Christine Ronan
Jan 2026
“Zark is the company you want to use for your HVAC needs.”
Zark is the company you want to use for your HVAC needs. Professional and experienced service, plus honest, courteous and knowledgeable. Zach explained from start to finish what he was doing and what the cost would be (which was very fair and reasonable ). A+++ rating from us.
Steven Hanson
Jan 2026
“Rob arrived early, which worked out perfectly for me.”
Rob arrived early, which worked out perfectly for me. He was thorough in the diagnostics and finding the part that was malfunctioning. He was here about 1.5 hrs from start to finish. Price was reasonable and I'm 1 happy customer to have consistent heat again. Thanks, Zark!
Deborah Medina
Jan 2026
“These people are great.”
These people are great. Furnace wasn’t working the day after Christmas and the owner showed up 30 minutes later and fixed the furnace promptly. Couldn’t believe it right after a holiday.
Robbie Watson
Dec 2025
“I’ve used Zark in the past for air conditioning and was very pleased.”
I’ve used Zark in the past for air conditioning and was very pleased. When my furnace went out I felt good about calling them. They did not disappoint. Rob was great. He diagnosed the problem and took care of it promptly. The charge for service was very reasonable. I would highly recommend Zark.
Joyce Bean
Dec 2025
“I called Zark at 3:47pm when I was at work and noticed my heat inside my home had dropped to 58...”
I called Zark at 3:47pm when I was at work and noticed my heat inside my home had dropped to 58 degrees and wasn’t increasing. It was -1 degrees outside. The woman who answered was friendly and professional and said she could get someone out there in about 10 min. Zack pulled in as I got home, looked at the furnace and immediately found and fixed the issue. My heat was up and running within 10 min. He explained everything to me, also told me about a couple other services they offer that I could benefit from (not in a salesman sort of way). He was extremely polite and professional. This is my 2nd time working with them (1st time was when I purchased a new AC unit from them). I would recommend Zark Heating & Cooling to anybody as they are my first choice.
Melissa Tonn
Dec 2025
“The Tech arrived on time, and was very thorough in servicing my furnace.”
The Tech arrived on time, and was very thorough in servicing my furnace. All work was done at a fair price, and I will be using Zark Heating & Cooling again when the need arises.
Jim Kenny
Dec 2025
“Always a great day when Zark shows up to inspect the furnace before the frigid temperatures.”
Always a great day when Zark shows up to inspect the furnace before the frigid temperatures! Great job as always! 5 Star ⭐️ company!
Rachel Hassett
Dec 2025
“Great customer service, very friendly and easy to work with.”
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.
Kristin Goodwin
Dec 2025
“Great experience.”
Great experience! Zach was awesome to work with and was great at explaining everything he had done. Highly recommend!!
Justin McElwee
Dec 2025
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