Commercial Plumbing Services in Honolulu, HI

From the Boiler Room to the Backflow Assembly — Done Right, Done to Code.

Commercial plumbing isn't residential work scaled up. It involves higher pressures, larger loads, stricter codes, and equipment that has to perform under continuous demand. Our union plumbers and pipefitters handle the full scope of mechanical plumbing for commercial and industrial properties.

Plumber adjusting copper pipes and valves inside a utility room with tools in hand

Gas Boilers & Hot Water Generation

Reliable hot water is non-negotiable for hotels, hospitals, multifamily buildings, laundries, and food service. We install, service, and overhaul:

  • Gas-fired and electric commercial boilers
  • High-efficiency condensing systems
  • Hot water heaters, storage tanks, and recirculation systems
  • Boiler controls, sensors, and combustion tuning
  • Annual boiler inspections and code compliance

CIPP (Cure-in-Place Pipe) Lining

Aging drain, waste, and vent piping doesn't always need to be torn out. Cure-in-place pipe lining rehabilitates failing pipes from the inside—no demolition, no opened walls, and no closed floors of a hotel or hospital for weeks. We install a resin-saturated liner inside the host pipe and cure it in place to form a structural, jointless new pipe with a 50-year design life.


CIPP is especially valuable for Hawaii's older commercial buildings, high-rise stacks, and properties where conventional re-piping would be cost-prohibitive or operationally disruptive.

  • Drain, waste, and vent (DWV) pipe rehabilitation
  • Vertical stacks and horizontal mains
  • Pre-lining CCTV inspection and condition assessment
  • Trenchless repair — no excavation, minimal tenant disruption
  • Long-term structural restoration with corrosion-resistant lining
Worker in orange safety gear tightening a valve on industrial piping at a construction site

Booster Pumps

Multi-story buildings need consistent water pressure on every floor. We install and service variable-speed booster pump systems, troubleshoot pressure issues, and replace failing pumps before tenants notice.

Sump Pumps & Drainage

Mechanical rooms, parking structures, elevator pits, and basement levels rely on sump and ejector pumps to stay dry. We provide installation, replacement, alarm-system integration, and preventive service.

PRV Repair & Balancing

Pressure-reducing valves protect plumbing systems from damaging high incoming pressure. When they fail or drift out of calibration, the symptoms range from noisy pipes to ruptured fixtures. Our team rebuilds, calibrates, and balances PRV stations across building risers.

Hands using red pliers to cut a brass lock on a bicycle wheel.

Backflow Preventer Testing & Repair

Backflow assemblies protect potable water from contamination—and the State of Hawaii requires certified annual testing. We provide:

  • Certified backflow preventer testing
  • Repair, rebuild, and replacement of all major assembly types
  • New installation and submittal documentation
  • Compliance reporting to local water purveyors

Additional Commercial Plumbing Capabilities

  • Medical gas piping
  • Compressed air systems
  • Process piping for industrial applications
  • Grease interceptors and waste systems
  • Re-piping and infrastructure upgrades
  • Plumbing for tenant improvements and renovations

Contact Continental Mechanical Services Today

If your business needs commercial plumbing or backflow preventer services in Honolulu, HI, contact Continental Mechanical Services today at (808) 846-4211.

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