Quality You Deserve

A J Mechanical Services Inc
Innovation & Success
For Nearly 30 Years

A J Mechanical Services Inc
Superior Service
Across Southwest Ohio

A J Mechanical Services Inc






6250 Webster St
Dayton, OH 45414


Monday – Friday
8:00 AM – 4:30 PM

A J Mechanical Services Inc —
Your Go-To Mechanical Contractor

Are you a building owner or manager in Dayton, OH, who wants a better way to predict your mechanical costs now and into the future? You need A J Mechanical Services Inc for all your heating, air conditioning, plumbing, and backflow needs. Our team is constantly looking for ways to help our customers save time and resources by utilizing the latest technology. We also believe that everything should be made as simple as possible; not simpler. We provide free estimates, and we’ll let you know what the issue is and how we plan to fix it. This means there’s no guesswork on your end or hidden costs to surprise you.

We’ve built a reputation in Dayton, Cincinnati, Troy, Wilmington, and surrounding areas, for honesty, prompt personal service, and top-quality work. So, if you’re looking for reliable service for your building’s systems, make A J Mechanical Service your first call, and we’ll take care of the rest.

Air Conditioning
Plumbing & Backflow

Our History

In March 1991, Alexander J Kovacs founded A J Mechanical Services by himself and one truck. He started on his own after working for a large commercial company. Alex intended to start a residential HVAC company, but the concept grew into something much larger. Once a larger commercial property management company heard he was on his own. The residential work stopped and started exclusively working in the commercial and industrial sectors. In September 1994, he purchased the property at 6250 Webster St., where the company is currently located.

Our Vendors

Everything Should Be Made As Simple As Possible; Not Simpler

Carrier logo
ClimateMaster logo
AAON logo
Mammoth logo
Liebert logo
Sterling logo
SPX logo
Lochinvar logo
Evapco logo
Honeywell logo

Don’t leave your building’s mechanical services to just anybody, contact the pros at A J Mechanical Services Inc today at 937-890-3061.

A J Mechanical Services in Dayton, OH

A J Mechanical Services
6250 Webster St
Dayton, OH 45414

P: 937-890-3061
F: 937-890-4061
E: ajk@ajmechanical.com

Business Hours:
Monday - Friday
8:00 AM - 4:30 PM

Licenses & Certificates
Licensed by the State of Ohio: Lic.#16225
HVAC, Hydronics, Refrigeration, Plumbing

Certified Backflow Tester: Lic.#4518, 4503, 5771

Boiler Contractor Certificate: #C817

BBB A+ Rating