Quality Ideas

Open Controls Solution

In 2001 Jarrell Mechanical started to recognize the demand from the marketplace to provide an open controls solution.  In the old days of building automation the controls contractor was married…

Energy Solutions

Charles E. Jarrell works hard every day to uncover innovative ideas to lower building energy costs. For years, we have relied upon our Direct Digital Control expertise to keep buildings…

Cost Effective and Energy Efficient Systems

The majority of our work has been design/build and service since our company was originallly founded over 50 years ago. Energy efficiency has played a significant role in HVAC design…