From the humble Oahu Plumbing and Sheet Metal shop founded by Francis Sen in 1945, the company has grown from 4 workers into one of Hawaii's largest and most respected commercial contractors thanks to its family atmosphere and company stability. Over the past 65 years we've worked on most buildings in Hawaii from residential to commercial to governmental, including the Hawaii Convention Center, State Capitol, Ward Centers, and Tripler Medical Center. Now in its 3rd generation of family ownership, Sen Plex Corporation is still consistently listed as one of the Top 250 Hawaii Businesses.
Good teamwork and expertise is essential to having a successful and profitable project for the owners, general contractors, and the rest of the team. OPSM strives to work closely and form partnerships with its general contractors and owner clients to assure mutually successful projects. Our experience and expertise also plays a major role in working with the project team to recognize potential problems and provide innovation to create the best solutions at every step of the way. Major air conditioning system replacement is one of the core strengths of OPSM.
Get the help you need when you need it most. Our technicians are on call 24 hours to handle any problems at anytime. For Statewide Emergency Services, please call (808)848-0156 to speak with a live customer service representative. Our team of technicians, estimators, project managers, and engineers are foundation to the largest a/c service department in Hawaii. With fully staffed offices on the islands of Oahu, Maui, Kauai, and Hawaii (Hilo & Kona), help is just a phone call away. Oahu Air Conditioning Service (OACS) provides the highest quality air conditioning service to commercial customers of all sizes.
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