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Our services

New Construction & Renovation
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 HVAC System Replacement
Major air conditioning system replacement is one of the core strengths of OPSM. Major air conditioning system includes replacement or installation of large water cooled chillers, packaged air cooled chillers, cooling towers, boilers, large air handling systems, and large packaged AC units. From high-rise rooftop equipment replacement to central plant replacements, no job is too big or impossible. OPSM has the technical experience and the expertise to take on the complex and challenging installation / replacement of large equipment.
Design Build
OPSM has a highly qualified staff which includes two registered professional mechanical engineers licensed to practice in the State of Hawaii and an accredited LEED Green Associate professional. The company has design build capabilities and offers its expertise to its customers in recommending and implementing value engineered design alternatives which can result in significant cost savings while providing quality installation for its customers. Additional services offered to clients include free estimates, conceptual design budgets, design input, and scheduling input.
Energy Savings Retrofit
With operating costs climbing every year, one of the best ways for a company to maximize their profits is to invest in energy saving air conditioning system retrofit. Major energy saving retrofit projects involve the replacement of large air conditioning systems with new higher efficiency equipment utilizing the latest technological advances. Also included are energy recovery systems, cogeneration system, and state of the art energy management control systems. In many cases, these installations lead to huge energy savings which pays for itself and a short term return on investment.

Oahu Plumbing & Sheet Metal, Ltd

Oahu Plumbing and Sheet Metal (OPSM) has been one of the leading mechanical contractors in Hawaii for over 65 years. The company has completed a wide variety of projects of all types and sizes and is especially successful in complex projects that require high technical skills and quality installation. We are capable of handling small to multi-million dollar large scale projects.

Our construction experience includes working on high-rise buildings, City/ County/ State/ Federal government facilities, hotels and resorts, wastewater treatment facilities, residential condominiums, hospitals, schools, airports, and more. Our services include plumbing, air conditioning, fire protection, custom sheet metal fabrication & installation, architectural flashing, louvers, metal roofing, metal sidings, and industrial piping fabrication & installation.

Featured projects

OACS and OPSM are full-service mechanical companies specializing in all types of commercial heating, ventilation, air conditioning, plumbing, and sheet metal services. Here are a few of the projects we have worked on: