Reviews of local pros in Cincinnati, Ohio

We had Knock Knock put a mini split into an addition to our house last year and they did a great job! Mitchell is very knowledgeable and stands by his work. He is great about making sure everything is working the way you want it.

We had them install a new HVAC system for the rest of the house last week. The crew was very nice, professional and efficient. The new system works great and I could not be happier! Everything is working great and I know that if we have any issue at all Mitchell will get out here to take a look at it as quickly as possible. This is a great small, local company and I highly recommend them.

Great company. Mitchell is super knowledgeable, pleasant, and accommodating. He explained in detail some of the issues I had been having with my unit without bashing the other company. He seems to really want what is best for the customer, not just what is best for his bottom line. Definitely recommend.

Mitchell and his Dad came to my house last week to add a return air duct and a humidifier to our furnace. Mitchell was very knowledgeable and I couldn't have been happier with everything he did.
It started with the moment that I saw they wore booties when they came in my house, and took them off before they went outside. (Unfortunately, so many people think it is okay to wear booties outside and then come back in your house ~ not sure what they are thinking)?
Mitchell did a wonderful job on everything and he and his Dad were incredibly neat. There was no sign of them doing any work. Everything had been cleaned vacuumed perfectly.
I highly recommend Knock Knock for any HVAC work you need to have done. I don't say that easily. My husband owns a remodeling company and I have seen many shady people in this industry. Mitchell truly stands out and is a very genuine person.

Cooper was very nice, extremely thorough & resolved our heat pump issue on this frigid day. Thank God! Will definitely use their services again, if necessary, in the future!

Cooper came and did our check up today. He was punctual, knowledgeable, and friendly. We couldn't be happier. Thank you for your help!

Cooper and Andrew have been great, very knowledgeable and patient technicians how have helped me navigate my way through my process, I highly recommend Knock knock for all of your hvac needs!! Great team !!

Cooper was professional and prompt. Explained the wear and tear he saw (as expected on a 10yr old system). Very good customer interaction, I would recommend to friends and family.

Was well pleased with Knock Knock Heating and Cooling , They were on time and the service Tech took the time to explain the process of a complete diagnostic service to maintain the equipment that I have. Cleaned outside condensing unit cked all the controls and put it all back together . Checked pressure of Freon and outside and inside air temps to ballence out the system. Cleaned and serviced the heating unit , Very satisfied with all they did. Would highly recommend them to all my friends and family. Nick Vesoulis

Cooper and Tim were excellent technicians. They arrived as scheduled and wasted no time getting my mini split heat pumps installed. Both worked constantly without taking breaks, cleaned up and removed all trash before leaving. Cooper took extra time to explain how to use my system. Couldn't be happier.

I couldn’t be happier with Knock-Knock Heating and Cooling! My AC went out and they were able to get someone out within a day to diagnose the issue. Even though they needed to order parts, they had everything fixed and running smoothly within 48 hours. The entire process was quick, professional, and very affordable compared to other horror story’s I have heard. Cooper was friendly, explained everything clearly, and made sure the job was done right. I highly recommend knock-Knock Heating and Cooling to anyone needing reliable service—you won’t be disappointed!

Thank you Knock Knock for the excellent service today in repairing the air conditioner.
The company was highly professional, punctual, and delivered top-quality work.
I truly appreciate their dedication, attention to detail, and honesty in execution.
Highly recommended!

Our furnace decided to start acting up on a Saturday night. It was still working, just making loud noises that kept my wife and I up most of the night. We reached out to Knock Knock at 745am on a Sunday...let me say that again 745am on a Sunday and heard back from them IMMEDIATELY!!!
Mitchell gave us a time frame when he could be here and he was here when he said he would be.
Found our problem and took care of it. Ran a few other tests just to be sure everything was on the up and up.
The fee we were charged was VERY REASONABLE for coming out on a Sunday IMO
I highly recommend Knock Knock!

I just had Mitchell, Cooper and Tim out from Knock Knock heating and cooling, to install a new HVAC and water heater. They were on time, kind and courteous, extremely knowledgeable and very thorough. Every concern or question I had was answered or taken care of. I would recommend them to anybody who’s Looking for great quality at a fair price. I am very pleased with my service and will definitely be using them again in the future for all of my HVAC needs.
Pros- Quality work , Great communication, fair pricing , Respectful technicians, Punctuality and very Skilled and knowledgeable

Cons- I didn’t have any very pleased with my service. And one nice ice, cold, quiet, AC!!!

Thanks you Knock Knock Heating and cooling

Mitchell and the Knock Knock crew are the best. They are partnered with the Nuve Family and we appreciate them so much.

Mitchell will take care of all your home services needs and make you feel like family in Ohio. Call Knock Knock and get the best quality.

The guys at Knock Knock were life savers! Our fuel oil system went down in the middle of sub zero temperatures and they fit us in same day. Knowledge, honest, able to get us back up and running. Couldn’t be happier with Mitchell and Cooper

Mitchell was the only HVAC person willing to do an emergency service on our heat. He was very quick, professional, and reasonable. Highly recommend!!!!!

Knock Knock was doing my neighbor's unit, and I followed up with Cooper - set up a service for my HVAC unit. Cooper was prompt, thorough (not rushed and making sure things were serviced right), and informative about needs without being pushy! Plus a very friendly service provider! I couldn't be happier - and we signed up for the service plan so we'll be taken care of for years to come! Thank you Knock Knock (and Cooper) for taking care us respectfully and at a very fair cost! Highly Recommend!

Excellent, professional service! Our new furnace is super quiet and much more efficient than our old one. Installers were very personable, prompt, anttention to every detail, and took extra time to make sure everything was clean and tidy before leaving. They also explained details about the new system, walked us through the control system and answered any questions we had. Thank you Knock Knock for the excellent service. Recommend highly! ⭐️⭐️⭐️⭐️⭐️

I needed a new HVAC system right before the worst winter temperatures we have had in some years. The technicians at Knock Knock were very professional and knowledgeable. As a former NCO in two branches of the military, I know what hard work and dedication looks like. I was very impressed at the work ethic and ability to get the job done correctly and timely. Very respectful of the homeowner and property they work on. I could not recommend them enough.

Thank You,
Mark Walter

I had a new Air conditioning and Furnace installed today.
Prior to this, I had a visit from Mitchell (manager of Knock Knock heating and Cooling company) . He did thorough inspection of my unit and made me a very attractive offer. Since I have a new born baby (5 weeks) he did his best to send me 2 of his technicians: Cooper and Tim.
They absolutely rock. work done with care, very professional, very friendly. Their expertise was obvious. They know what they do and they did it super well.
at 5 pm. everything was working. we finally can appreciate air conditioning working and more efficient than before.
Thank you very much Mitchell for helping me get my HVAC working and allocated these 2 great technicians to do the work.
Thank you very much

My very elderly furnace was acting up and I needed a company that serviced my area. (I’m kind of in the boonies). I called on a Saturday and Mitchell was immediately willing to help, got information, and we agreed to a service call the following Tuesday because I was out of town Monday morning. Monday morning my furnace died. In single degree temperature. I called Mitchell and he sent Cooper out that afternoon to assess the situation and discuss options. I decided that after 25 or more years a new furnace was called for and was overjoyed to learn it could be installed Tuesday. They arrived Tuesday ON TIME! (That’s worth 5 stars alone.) They were friendly, knowledgeable, thorough and cleaned up when they were done. My questions were answered clearly and when they left I HAD HEAT. I’m grateful I found Knock Knock and will recommend them when I have the opportunity.*****Addendum: I had some operational issues (mine, not theirs) and they came out ON A SATURDAY to instruct me and, after multiple repetitions, I GOT it. If there was a sixth star, I'd give it to them.:-)