Business Details
50+ Years
experience
Emergency
services
Trusted HVAC & Mechanical Contracting Services in Honolulu, HI
Sen Plex has been a trusted name in mechanical contracting since 1945, founded by Francis Sen on Oahu. As a third-generation family-owned business, we specialize in HVAC, plumbing, refrigeration, and sheet metal services for commercial, residential, and government projects. Our team of factory-trained technicians and licensed engineers delivers installation, maintenance, and emergency repair services across Hawaii, serving landmarks like the Hawaii Convention Center and Tripler Medical Center.With offices on Oahu, Maui, Kauai, Hilo, and Kona, we combine technical expertise with a commitment to customer satisfaction. Our affiliations with industry organizations like ASME and NFPA underscore our dedication to quality and innovation. We prioritize honesty, integrity, and tradition while staying at the forefront of technological advancements to meet evolving client needs.
Services
HVAC Maintenance
Commercial Plumbing
Sheet Metal Fabrication
Emergency Repairs
Design Build Projects
Energy Savings Consultation
Fire Protection Systems
Industrial Piping
Architectural Flashing
Cooling Tower Services
Details
- Year established: 1945
Highlights and features
- We offer 65+ years of experience in Hawaii's mechanical contracting industry.
- Our team includes factory-trained technicians and licensed professional engineers.
- We provide 24/7 emergency HVAC and plumbing services statewide.
- We maintain affiliations with leading industry organizations for quality assurance.
- Our family-owned business prioritizes personalized service and long-term client relationships.
Associations and certifications
- Building Industry Association of Hawaii
- General Contractors Association of Hawaii
- National Fire Protection Association
- American Society of Mechanical Engineers
- International Association of Plumbing and Mechanical Officials
- Sheet Metal Workers International Association
- National Air Duct Cleaners Association
- Plumbers and Fitters Union Local 675
- American Society of Heating, Refrigerating & Air Conditioning Engineers
Services
HVAC Maintenance
Our HVAC maintenance services extend equipment lifespan while maximizing ROI through preventative care and emergency repairs. Factory-trained technicians diagnose issues quickly for commercial clients across Hawaii. We handle all system types including chillers, cooling towers, and ductless splits.
Commercial Plumbing
We provide comprehensive plumbing solutions for commercial and industrial facilities, including pipe fabrication, backflow testing, and emergency leak repairs. Our team handles projects from small fixes to multi-million-dollar installations in government and private sectors.
Sheet Metal Fabrication
Custom sheet metal fabrication and installation services include architectural flashing, metal roofing, and industrial ductwork. Our skilled craftsmen produce precision components for commercial buildings, airports, and healthcare facilities statewide.
Emergency Repairs
Statewide 24/7 emergency services cover HVAC and plumbing crises with rapid response times. Technicians are available around the clock to minimize downtime for critical systems in hotels, hospitals, and government buildings.
Design Build Projects
From concept to completion, our design-build services integrate HVAC, plumbing, and sheet metal work for new construction and renovations. Licensed engineers and project managers deliver cost-effective solutions for complex commercial and industrial projects.
Questions
What services does Sen Plex Corporation offer?
We provide HVAC maintenance, commercial plumbing, sheet metal fabrication, emergency repairs, and design-build construction projects for commercial, residential, and government clients across Hawaii.
Do you offer 24/7 emergency services?
Yes, our technicians are available 24 hours a day, 7 days a week for HVAC and plumbing emergencies statewide.
Which areas do you serve?
We operate across the Hawaiian Islands with offices in Honolulu (Oahu), Maui, Kauai, Hilo, and Kona.
Are your technicians certified?
Our team includes factory-trained technicians and licensed professional engineers with specialized training in HVAC, plumbing, and sheet metal systems.
Can you handle large-scale projects?
Yes, we manage projects from small repairs to multi-million-dollar installations, including high-rise buildings and government facilities like the State Capitol.
What industries do you work with?
We serve hotels, hospitals, airports, government buildings, residential complexes, and industrial facilities with customized mechanical contracting solutions.
