A M Garner Inc., Mercury Control Services DBA has been in the HVAC industry / electrical industry and has been proudly servicing the Houston and surrounding areas since 1964. We service residential and commercial HVAC and electrical. We specialize in commercial heating and cooling, system replacements including chilled water equipment, service, repair maintenance and commercial electrical build outs. Residential system replacements, service and maintenance.Our mission at Mercury Control Services is to successfully provide each and every customer with world class customer service and finding solutions to all your commercial and residential needs, in both air conditioning, heating and electrical.With almost 50 years of experience in the heating, cooling and electrical arenas we believe we have what is needed to provide you with the best possible solutions.