Serving Montgomery County, Maryland, and nearby areas with excellence.
ADI Heating & Air Conditioning provides expert HVAC installation and repair services to homeowners and businesses throughout the greater Montgomery County area. We also offer seasonal promotions, flexible financing options, and comprehensive maintenance plans to keep your system running smoothly year-round.
From Installations to Emergency Repairs - Get a Top-Rated Residential HVAC Estimate Online or Call Now
Our Services
Air Conditioning
.avif)
When Olney's intense heat and humidity arrive, ensure your comfort with ADI Heating & Air Conditioning. With over 40 years of local experience, we provide reliable AC repair, installation, and maintenance. Trust our highly-rated team to keep your Montgomery County home cool and efficient.
Heating
For over 40 years, ADI has kept Olney homes warm. We offer expert heating repair, including 24/7 emergency service, efficient new system installations (furnaces, boilers, heat pumps), and preventative maintenance to ensure year-round comfort and safety. Rely on our experienced team.
Ductless / Mini Split
With over 40 years serving Montgomery County, we provide energy-efficient, flexible ductless heating and cooling tailored to your needs. Experience targeted comfort and potential energy savings with ADI, trusted by nearly 1900 reviewers (4.9 stars).
Duct Cleaning
Air ducts accumulate dust, allergens, and contaminants, affecting indoor air quality and HVAC performance. ADI Heating & Air Conditioning offers expert duct cleaning in Olney, MD, removing buildup for cleaner air, enhanced system efficiency, and a healthier home environment.
About
ADI Heating & Air Conditioning
When it comes to keeping your heating and air conditioning systems
running smoothly and efficiently year-round in the Olney, Brookeville, Gaithersburg, Rockville, Silver Spring, greater Montgomery County, and NW Washington DC area, you can always trust the experienced hand of ADI Heating and Air-Conditioning. Based in Montgomery County, Maryland, we have Over 40 years of experience in serving the greater Washington DC area and specialize in all aspects of indoor air quality and comfort, both residential and commercial
running smoothly and efficiently year-round in the Olney, Brookeville, Gaithersburg, Rockville, Silver Spring, greater Montgomery County, and NW Washington DC area, you can always trust the experienced hand of ADI Heating and Air-Conditioning. Based in Montgomery County, Maryland, we have Over 40 years of experience in serving the greater Washington DC area and specialize in all aspects of indoor air quality and comfort, both residential and commercial
Who We Serve
Residential
Commercial
Light Commercial
New Construction
Multi-Family
Customer Testimonials
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.
Tim B.
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.
Victoria S. M.
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.
Tom R.
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.
Gad H.
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!!
Tracy B.
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
Alex T.
Featured Manufacturer
.webp)
.avif)
Maintenance Plan
Comprehensive, high-quality offerings designed to deliver results.
Two planned maintenance inspections per year. Priority service
Free labor for repair throughout the year.
10% discount on repair parts
Two Maintanence Check Per Year Priority Service
Labors For Repair Included (See Back) 10% Discount On Repair Parts
Humidifier (Service Labor Only)
Air Cleaner (Service Labor Only)
Condensate Pump (Service Labor Only)
UV Purifier (Service Labor Only)
Apply for Financing Today!
We have partnered with Optimus to offer flexible payment options for your project. Optimus uses a soft credit check until funding and the highest score from all 3 bureaus to see if you qualify. It also takes just a few minutes to get started.
Promotions
Service Areas
