Service That Solves
At EES, we don’t just service HVAC equipment — we solve facility challenges and keep critical building systems operating at their best. From design and installation to preventive maintenance and 24/7/365 support, we deliver solutions that reduce downtime, extend equipment life, and keep facilities running efficiently.
For more than 60 years, businesses across Dayton and Southwest Ohio have trusted EES for commercial HVAC, mechanical, and building automation services backed by responsive support, technical expertise, and a team focused on solving problems before they become disruptions.
For 24/7 Emergency Services Call 1-800-817-8734 ext. 333
Trusted by businesses for commercial HVAC services in Dayton & Southwest Ohio for six decades of HVAC, mechanical, and automation expertise.
Years of Service
60+
Emergency Response
Always on call — delivering rapid, reliable support that keeps critical systems running without interruption.
24/7
10,000
Real‑world experience fine‑tuning systems to reduce downtime and extend equipment life.
SYstems optimized
Our Story:
Founded in 1965, EES Facility Services began as a residential HVAC provider and evolved into Southwest Ohio's trusted commercial mechanical contractor. For over 60 years, we've designed, built, and maintained mechanical systems for commercial, industrial, institutional, and medical facilities.
Our Philosophy:
Work as a team to solve the problem, not just service equipment.
Our Mission:
To provide top tier customer service while offering unique solutions to difficult mechanical, HVAC, and facility challenges through responsive service, technical expertise, and long-term client partnerships.
Our Vision:
To become Southwest Ohio’s most trusted commercial and industrial facility service partner by delivering reliable
What Our Customers Say About Us:
"Since taking over our HVAC equipment in 2012, we have noted a marked improvement in the operation of all of our systems...I feel I can say that we have made tremendous progress towards bringing all of the units up to their optimum performance. A job well done by your company." Satisfied Customer Since 2012
Our Industry Partners:
