The owner, Ronan, was very careful to explain in laymans terms my choices and his suggestions. His quote was less than the others andhis crew was polite, clean and thoughtful. In the end, he went above andbeyond by replacing an electrical box that was rusty and a pipe that wasfraying, both of which were not considered part of original estimate.I highly recommend this company.i

Couldn’t be more pleased with the quality of product as well as service we received. Ronen was very knowledgeable and professional. Would highly recommend to others.

Ronen and his team were excellent! I would recommend ADI for all your heating and ac needs!

ADI did a wonderful job. They were professional and the owner of the company was there to make sure everything was correct on the job and me as the customer was satisfied.

We needed our outdoor compressor unit relocated and shopped HVAC professionals around Olney. Ronin took the time to evaluate possible options and explain each one. The work was done in a timely manner and the cost came in less than expected since we didnt need to use as much refrigerant. Highly recommend.

The team did a fantastic job!! They provided a few options to fix the problem - which was really helpful. I went with a replacement - the difference is so obvious. Quieter and more comfortable. They were really respectful of my time and home. I will definitely go back to them if I ever need anything in the future!! Truly appreciated

The whole process of selecting and installing 2 high-end dual fuel systems for us was top notch! The crew showed up on time, was professional, courteous, and immaculate. Those systems have worked perfectly for the past 4 years saving us $$$ on our utilities bills.

I wish I met Roman from ADI years ago. Not only he is professional, smart, and helpful, he knows what to do and what not to do. I had an addition put onto my house and they replaced the heating and AC unit 4 years ago. The install was poor, cut corners, and I have had issues every year. A friend of mine introduced me to Roman from ADI and he has been the first person to figure out what is wrong. He doesn’t do patch jobs, he fixes the root issue. I am confident that if you meet Roman from ADI, you will trust him as I do and know that he is leading you in the right direction. There is no one better in the area who works on HVAC systems. Thank you from the Wise family for your awesome service and support.

I have been using ADI for many years first for repairs and then later for a whole new system. ADI is dependable and responsive and their prices are reasonable. Their workmanship is quality and they will advise the most cost effective approach using industry best equipment. I highly recommend ADI for heating and air conditioning needs.

Great customer service and workmanship. I needed a new air conditioner and furnace and got it installed in less than a week. In the middle of summer. Very nice job and extremely clean. Highly recommended.

Highly recommend. Honest, reliable, efficient. I have used them for the past 18 years in many different homes. Answers the call for help quickly and doesnt try to tell you anything you dont need. Very happy customer!!

Our recent experience with ADI Heating & Air was terrific. The owner prepared the estimated personally and gave us a detailed written quote shortly after his visit. He was very responsive in answering all our questions. Once we signed the contract, he oversaw the installation of our new HVAC system himself. His employees were professional and hardworking. We love our new system. We will use ADI in future for all our HVAC needs.

Excellent workmanshipVery skilled and professional staff.Just update my HVAC system, they installed last one 20 years ago and not one single problem.I would recommend them.

Excellent and friendly service! My Heating was not working properly. I called Adi and he arrived within an hour and fixed the problem in 30 minutes. A++

ADI has been our trusted HVAC service provider for 3 years. They provide excellent customer service, pricing and recommendations on how to properly to maintain the system. Highly recommend.

I would recommend ADI Heating & Air Conditioning to everyone, when I lost my air conditioner due to a storm, the owner came out immediately and gave me an estimate to submit to my insurance company, the insurance company contacted him and we were able to move forward quickly. My home is now cooler than it ever was and with the system that he installed we can turn down the air while in bed with on our cell phone. You know that being without air conditioning in 90 degree weather can be pretty tough, we were up and running in no time. Thanks to ADI Heating & Air Conditioning. Do yourself a favor if you need any repairs to your unit give them a call.

Ronen is reliable, honest and professional. He is always available to answer questions or come by to check on things. We have always been super happy with his service!!

We have been using ADI Heating and Air for years and have always been happy with the services provided. Quality products combined with expert installation & maintenance keeps us cool in the summer and warm in the winter.

Very experienced and reliable HVAC Co. in both residential and commercial installations. Prompt response and competitive prices.They will also get you the rebates from the local utilities to save you even more $$

We have used ADI for over 15 years and Ronen is the best. We will never use anyone else. He is professional and knows his stuff. Thrilled to be his customer. You will not go wrong with Ronen and ADI!!

Extremely responsive and capable contractor. Has performed HVAC system maintenance and trouble shooting and always effective. Highly recommended.

Ronan and his crew were fantastic. Prompt, professional and polite, everything was left in great condition and we love our new unit.

Excellent service and good prices. Installed a 16 seer system in my home plus upgraded the duct work. Much more efficient than my old system.

I have been very satisfied with the service provided by ADI for the past 6 years. He goes above and beyond to be helpful and is very responsive!! Thanks so much!!

Installed new HVAC for me a couple years ago, and just signed a service agreement for this winter and the coming summer. Extremely friendly and informative about my system, and excellent price. Would recommend to any friend that needs new HVAC. The new system has saved me hundreds throughout the year and has provided a very comfortable environment.

I had ADI install an HVAC unit in my home 5 years ago. It has been running great since then. I couldnt be happier. If I ever have a question, I call Ronen and he always helps me. Highly recommend.

Great service, the technicians were on time, professionally gave us a fair price to replace the part, we got our a/c back at no time.We definitely will recommend them.

Very dependable and efficient service provider. I am a delighted customer of 20 years!!!

We have used ADI (Owner: Ronen) for various repairs to our HVAC system in the past. He has always been prompt, reliable, thorough, and honest.Recently, we chose him to put in an entire new HVAC system. He clearly explained the various options for different units, as well as rebates and how to finance our replacement. He also gave us some valuable additional recommendations for how to improve our heating and cooling systems, including some structural changes to our home that will make a difference.We have nothing but great things to say about ADI and Ronen, and the work he has done for us. We absolutely recommend him without reservation!

Honest and knowledgeable.I highly recommend this company.....

We used ADI to install two HVAC units, came on time, fair price, honest, we will definitely recommend them.

Too expensive for a townhouse owner. Unreasonable markup on top of manufacturer prices.

Right in the midst of a extreme heatwave our A/C began to fail.We called ADI heating and cooling the next morning and Ronenshowed up in less than an hour. He identified the problem within 10minutes and he had the needed part right on his truck.The A/C began to cool the house within 1/2 hour of his arrival.He was a total professional, very friendly plus his fee for thepart and labor was very reasonable. We also feel like we have a trusted friend to help us with any heating or cooling problem.Paul and Marianna WiseBrookeville MD.

If I could rate lower than a 1, I would. I had a problem with my AC unit and called ADI to make an appointment. Whoever answered the phone was rude and unprofessional. I explained my problem and he refused service. There are lots of competitors out there. Choose someone else.

I can not thank Adi Heating, Mr Ronen Chazoom, enough for the support, genuineness, and professional work he and his crew provided to replace my heating and air conditioner system. He is also a Veteran Soldier!! I initially called Ronen for help with my sudden loss of air conditioning power during the most recent heating spell. He came by my home same day, taking time out of his busy day to provide an estimate. He recommended the best option that was reasonable and economical for my house and family to replace my 26 y/o unit. He sold me what I needed, not for profit. He undercut the competitor by $2,400, who tried to sell me what I did not need! Even better, Ronen recommended - Amana - Made in the US. It that works smoothly and definitely cools my house! He scheduled my installment as quickly and reasonably as possible, considering how busy he was. He even cleaned all the debris and dead rodents that collected around the old unit for so many years! You would be foolish not to call Adi Heating and Air. He will give you an honest no nonsense estimate and I can assure you, you will be absolutely pleased with his character and professional work!Sincerely,Matt St laurent

ADI is a rare commodity; they are the most reliable, professional, knowledgeable, honest hvac company in the DMV!

Excellent, prompt, reliable and clean service.