AVAILABLE
WHEN YOU
NEED US MOST
At KNZ Heating & Cooling, we understand that a malfunctioning HVAC system can significantly impact your safety and comfort. You can count on our family-owned
heating and air conditioning company in Northwest Indiana
for exceptional customer service, no matter when you need our assistance.
what we do for you!
how we work
Request an Appointment
Get in touch with our team by calling us or sending a message through our online contact form. We’ll follow up to finalize the appointment and set up a time for our service technician to arrive.
Technician Arrives
Our technician arrives to address your concerns and solve them accordingly. We take a Whole-House Systems approach to maximize your HVAC system’s energy efficiency.
Satisfactory Results
The job isn’t finished until you’re happy with what we’ve achieved for you. We value our clients’ satisfaction and work hard to deliver the results you need.
WHY CHOOSE KNZ?
hear it from
our customers
The experience with KZN was absolutely fantastic! Last winter, our HVAC unit broke down during the coldest days of the season. We had heard about KZN's excellent service, and they truly lived up to their reputation. When we contacted them,…
Philip P.
Had my furnace and air conditioner cleaned and checked today, and super happy with the service. Friendly staff on time and very reasonable.
Karen C.
Great service great people highly recommend
Michael G.
My hvac system went out during a week we had 90 degree Temps all week long! I called and they sent someone out same day to assess. Next day, they came and installed a brand new hvac system. The turn…
C. M.
Very good and knowledgeable. Would recommend
Paul O.
I have used KNZ for years for several residences. Keith and team have always been there when I needed them and have always been very responsive. Nick is great, as is everyone else. KNZ is one of the very few…
Client
Nick and his partner did a great job with checking out our a/c in this 90 degree weather. Thanks
Michael G.
KNZ Heating & Cooling, Inc is a great HVA company. They installed all of our units when we built in 2020. We continue to reach out to them yearly for our heating and cooling inspections and preventative care. They are…
Cindy G.
Had my AC/Furnace installed today. The KNZ crew I had were great, respectful and very professional. Clean install and everything looks and works great. I would recommend them for future work if you need any for your AC or Furnace.
Brian T.
Great business! Used KNZ for over 20 years at my homes. Really know how to handle issues and repairs. Very knowledgeable and explain everything thoroughly! Couldn’t be more sure about a contractor!
Linda R.
Zack was very friendly and professional. Did an excellent job.
Carol L.
KNZ came to my mom’s per her request for a maintenance check on her furnace. I just happened to stop by while he was there. Zack was very, very polite, kind, and very thorough. He went out of his way…
Sandy K.
Crews are trust worthy and professional. Great people. I had a problem late on a Friday evening and first thing Saturday they came out and had me up and going right away. Thank you KNZ!!
Cory W.
Was an awesome experience dealing with KNZ! Great people to deal with and would use them again and again! Very reasonable for all your heating and cooling needs! Need work call them
Al G.
Zack. Was great , helped level the air-conditioner and very curtitous and a pleasure to work with. I would recommend your service.
Peter D.
KNZ has always provided me with great customer service. Nick always shows up when he says he is coming. I appreciate their professionalism and service!
Robert H.
They do a great job! They do check everything on the list to make sure everything is good. They are very thorough.
Bernie T.
KNZ came to my mom’s per her request for a maintenance check on her furnace. I just happened to stop by while he was there. Zack was very, very polite, kind, and very thorough. He went out of his way…
Sandy K.
KNZ were amazing, everyone was very professional and easy to work with. The work and craftmanship is top notch and so much more affordable then the other 6 companies I received bids from. Thank you Keith you guys rock!!!
Johnny N.
I had a great experience with KNZ. Within a week I was able to get a quote and brand new AC installed. Everyone I interacted with was friendly, and I’d recommend them!
Eric M.
Nick and Zack were very professional and completed the installation flawlessly and in a timely manner!
Robert K.
"Had a problem with our furnace that was new in 2015, when the house was built..water was dripping out of the furnace..the furnace was not installed by KNZ, but we did not want the original installer..we called KNZ and the…
Chris M.
"KNZ saved us! Our heat was not working at the office with temperatures at record lows, I called KNZ and they cld back asap to let me know they'd be out in an hour. They made it here in 45minutes.…
Mia G.
"A neighbor recommended I call them, and I'm glad she did. I called the office and the lady was very patient and knowledgeable..she asked questions about my problem and gave me ideas on what to check..it turned out my thermostat…
Christine M.
"Excellent customer service! They were called by my landlord to fix a furnace issue. The lady in the office who set up the repair appointment was so kind and helpful. The guy who came for the appointment was on time…
Bridgette R.
"Respectful and clean crew. They did very great, thorough work and they even left my basement cleaner than they found it. Couldn’t recommend them more!"
Lauren D.
"I called KNZ because my grandparents heat was out. They came the same day and got their heat running quickly and reasonably priced. The technician was very patient and answered all of their questions. We will definitely call KNZ for…
Karen C.
"Wouldn't use anyone else! Keith is great- very honest and knowledgeable! I use KNZ for my home and business. Keep up the good work!!!!"
Jackie Q.
"Very prompt and friendly service would recommend them anytime!"
Bob B.
"Nick came out to work on my AC and was very kind and respectful. He was very patient with me as he explained the problem and the solution. I will be calling them again!"
Jessica A.
"Definitely a 5 star rating for excellent professionalism and timeliness. During the June heatwave, my 20 year old A/C unit died. Within 24 hours, KNZ had installed a new one."
Mary B.
"We needed to replace our furnace and got quotes from several local companies. KNZ offered excellent brands and very competitive prices. The owners are friendly and knowledgeable. The service was prompt and efficient and courteous. We are very happy with…
Steve M.
"I'm as happy as a clam and will use this guy on a regular basis."
Kim D.
"Came to house looked over the old furnace installation made all necessary measurements and prepared a quote and scheduled installation before he left. Called the day before the installation to confirm date and time with us. They arrived the next…
James V.
"Follow-up service paramount to excellence."
Jim K.
"We did our own research and found the best company in the area! It was a pleasure doing business with you, Keith; we thank you and your staff for the great job. We will definitely recommend your company in the…
Jim K.
"Thanks so much for the "white vents" and for your info on the "dehumidifier" and have outside vents open for the crawl space. Warmest Regards."
Gerrit D.
"As a retired Thermal-Mechanical engineer. I can attest to the fact that KNZ is a complete and professional HVAC systems contractor. KNZ was competitive (second low of five bidders), the only contractor that figured out how to reasonably install the…
Jim C.
"KNZ You did a great job of removing our "old" furnace and replacing it with new. The men were prompt, courteous and did a good job of cleaning up. We are enjoying our new furnace and central air. We would…
Tom and Janell D.
"Just wanted to Thank-you for getting our job done as fast as you did. Thank you."
Pam D.
"Dear Mr. Miller We at the Apostolics of Lowell would like to extend our gratitude for the wonderful new furnace and air conditioner. The price was very reasonable and your installation crew was very diligent. They made sure everything was…
Rev. Lawrence E. Sinick
"KNZ installed a server room air conditioner for us quickly and professionally. Much appreciated Keith, hopefully I don't have to call you any time soon, but if I do I know you'll have me taken care of. Thanks"
Kyle
"Woke up in the AM had no heat. Called KNZ heating they were quick to answer the phone. They were fair with their priceing, prompt , showed up in the time frame that was givin. Thanks for taking care of…
Lois B.
"Very nice experience working with KNZ. Steve was very polite. Took the time to explain the problem. Same day service with only a 2 hour window. Didn't have to sit home all day waiting."
Kris G.
"On one of the hottest days of the year, and being the 4th of July, we called KNZ and they came out and fixed our airconditioning, we can't say enough about how happy we were with the service and the…
Chris M.
"You can always count on K n Z to get the job done, and get it done right. Much thanks Keith - A+ service and a true professional!!"
Matt M.
"KNZ is the contractor used by our builder. Kieth came in and talked to us about how we going to use the rooms. He then went through the plans and with our input, put together a comprehensive plan to make…
Mitch M.
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SERVING
NORTHWEST
INDIANA REGION
With more than two decades of experience in the heating & cooling industry, we believe that we have the skills needed to offer you the most energy-efficient products at a price that is both honest and fair.
Our clients value the outstanding service that our staff provides, characterized by friendliness, knowledge, and efficiency.
We recognize the stress of losing your heating or air conditioning when you need it most. Moreover, we understand the financial value of keeping your business comfortable throughout the year. Trust us to provide the solutions you need.
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