Thank You for the opportunity to introduce ourselves. Devco HVAC systems was established in March of 1994 by Mark Devereux in Ukiah, California.  Mark came to the Ukiah Valley from the L.A. Area where he worked for heating, ventilation and air conditioning contractors, servicing systems for such well-known public figures as President Gerald Ford and Bob Hope.  Commercial experience includes, San Anofre Nuclear Power Plant, 1984 Olympics Ice Plant and the Santé Fe Train’s control room.

With over 40 years of combined experience in the Heating Air conditioning and Ventilating trade,  Mark Devereux and his  employees make Devco a valuable asset to the Ukiah Valley.  Over the years Devco has established a customer base that includes the largest Bank in Mendocino County, Several  of our prestigious local winery’s  and many more of our locally owned and operated  manufacturing companies.

Continued education has allowed Devco to earn certificates from The Refrigeration Service Engineers Society (RSES), The Piping Industry Progress and Education Examination Board (PIPE), North American Technicians Excellence (NATE),  The Federal Environmental Protections Agency (EPA) for the Refrigerant Recovery and Handling and is well on its way to being awarded Elite Contractor Status by Fujitsu.  DEVCO is licensed as a C20 Warm Air Heating, Ventilation and Air Conditioning Contractor with the Home Improvement certificate through the State of  California Contractors Licensing Bureau

Devco provides customers with same or next day response time on service calls and we follow up with customers to be assured that their unit is working to their satisfaction.  Preventative Maintenance Contracts, fast efficient repairs , thorough escrow inspections, and continued education the  latest technology. Offsite monitoring and programming are all part of Devco’s goal to offer the best possible service and complete customer satisfaction.

Give us a call and let us show you how we can help  you, your family and your employees experience complete comfort while reducing your energy costs and increasing your equipment’s life by maintaining and servicing your HVAC systems. 100% customer satisfaction is our goal.

We love our customers and welcome your feedback and suggestions. Use our CONTACT US page to tell us how we are doing or suggest areas we need to improve on.