Lar-Mex with a staff of over 250 employees has been providing heating, ventilation, plumbing and air conditioning (HVAC) serv ... ices to the National Capital region for over 30 years. Our mission is to combine innovative Green Building Automation Solutions with reliable mechanical services in order to earn your loyalty as a customer. To accomplish this, we have built a three-fold service offering: - Design and installation of Green Building Automation Systems. - Design and installation of Plumbing Systems. - Design and installation of HVAC Mechanical Systems. - 24-hour service for the above. read more