The MVHAC Story
In June of 1965, Fred Slates, affectionately known as “Pops” or “Papa”, started the company now known as Maumee Valley Heating & Air Conditioning. He started the company out of his truck and a small garage located off of Telegraph road.
Fred was known for his generosity. He would accept whatever a customer could afford or barter with to pay for his services. He was also known for his ability to fix just about any furnace or air conditioner, and could often locate that hard to find part in one of the numerous storage locations where he kept the things he couldn’t bring himself to dispose of. Fred enjoyed helping others who needed a job or wanted to learn the HVAC business. In particular, he helped many of his nephews get a start in HVAC or other associated trades.
In 1995, Fred began transitioning MVHAC to his son-in-law Chris, and his daughter Patti Theodorou. Over the next 23 years, with the support of Patti; trusted advisor, mentor, and friend Mr. Don Caito; and the hard work of some dedicated service and installation technicians, Chris began to create the foundation for the business that remains to this day. Chris dedicated himself to mastering the trade, developing long-term personal and business relationships, and implementing a business model based on trust, quality, commitment, and doing things the right way.
Chris was an avid golfer and used his golfing weekends to foster his personal and business relationships. He was an active member of the Toledo Greek Orthodox Church and for many years was the chairman of the annual Greek-American Festival. He was devoted to his family and relished his role as Papou to his four grandchildren.
Sadly, on June 5, 2018, Chris lost his hard-fought battle with Leukemia. We miss him dearly but are confident that he and Fred would both be proud that the family-based business that they started and grew lives on.
Today, Patti and her son Spiros are continuing to build on this legacy. In addition, a number of the same service and installation technicians that helped to build this company remain today. Recently, one of Patti and Chris’s grandsons joined the company to learn the trade. We are excited that this now brings us to four generations. We are committed to our Core Values as we strive to deliver the quality and service that your family deserves.
From our family to yours – Let Us Completely Amaze You!
Put your trust in our 58 year old, full-service HVAC family owned company.

Toledo's Residential & Commercial HVAC Sales, Service, Parts & Repair Pros
It's our mission to provide the best HVAC service to Toledo area families. We offer the best HVAC options to fit your lifestyle and unique needs. Heating and Cooling for your home or Toledo area business is not a one size fits all approach. At Maumee Valley, we tackle each furnace, air conditioning or HVAC system installation by listening, and then by implementing a heating cooling solution that fits your needs. We're proud to have earned a reputation of doing the job right the first time. Here's how...
We listen to your heating & cooling needs!
To assure your satisfaction, we start by asking a lot of questions. If we don’t provide what you want and what you need, we simply are not doing our job! Check our reviews!
We do our job!
Quality Products
We work with the leader in home heating and cooling equipment, Bryant Home Comfort solutions.
Powerful Training
We train each employee to see your job through, start to finish. We make sure each HVAC product or system exceeds your expectations.
Exceptional Service
We provide quick, professional HVAC service and complete HVAC service plans to keep your systems operating at peak efficiency for humid Toledo Ohio summers and cold, wet winters. It’s all part of our tradition of service – assuring your complete satisfaction. Don't take our word, check our reviews!