Business Details
47 Years
experience
Emergency
services
Your Trusted Partner for Mechanical Construction Solutions
Since 1979, Hermanson Company has established itself as a regional leader in mechanical systems construction, delivering specialized HVAC, sheet metal, pipe-fitting, and plumbing solutions. Our integrated approach combines design-build engineering with lean fabrication practices, ensuring efficient, cost-effective systems tailored to each project's unique requirements. With decades of experience in both new construction and renovation projects, we prioritize client collaboration, technical precision, and long-term system reliability. Our 24/7 service division provides emergency maintenance and equipment retrofits, supporting critical infrastructure across commercial, healthcare, and institutional sectors.Through standardized prefabrication and on-site expertise, we minimize waste while maximizing installation efficiency. Client testimonials highlight our proactive problem-solving, adherence to complex schedules, and commitment to quality execution from pre-construction through commissioning. As an employee-owned company, we maintain deep community ties while serving projects ranging from data centers to educational facilities nationwide.
Services
Mechanical Systems Construction
Design-Build Engineering
HVAC Installation
Plumbing Systems
Sheet Metal Fabrication
Emergency Maintenance
Lean Construction
Tenant Improvements
Critical Environment Systems
Industrial Piping
Details
- Year established: 1979
Highlights and features
- 40+ years delivering mechanical construction solutions across complex sectors
- Integrated design-build approach streamlines project timelines and costs
- 24/7 emergency service division for critical system maintenance
- Lean fabrication facilities reduce on-site waste by 30%
- Proven track record with healthcare, data center, and institutional projects
What people say
Fantastic job supporting construction
First class professionals
Quality system implementation
Proactive problem-solving
Excellent BIM coordination
Services
Mechanical Systems Construction
Design and installation of custom mechanical systems for commercial and industrial buildings. Our expertise covers HVAC, plumbing, and sheet metal work from initial design through final commissioning. Clients benefit from integrated project planning and code-compliant execution across new construction and renovation projects.
Design-Build Engineering
Collaborative approach combining engineering and construction under one contract. Our engineers work directly with construction teams to optimize system performance while controlling costs. This method reduces project timelines by up to 30% through concurrent design and construction phases.
24/7 Service & Maintenance
Around-the-clock support for mechanical system maintenance and emergency repairs. Our technicians respond promptly to critical issues, providing temporary solutions and permanent fixes for HVAC, plumbing, and industrial systems in operational facilities.
Lean Fabrication
Off-site manufacturing of standardized components using lean principles. This approach minimizes on-site labor by 40% while improving quality control through controlled environment assembly of ductwork, piping, and plumbing systems.
Critical Environment Systems
Precision mechanical systems for sensitive environments like laboratories, data centers, and healthcare facilities. We ensure strict temperature, humidity, and air quality controls through specialized HVAC and filtration systems designed for mission-critical operations.
Questions
What types of mechanical systems do you specialize in?
We specialize in HVAC, plumbing, sheet metal, and industrial piping systems for commercial, healthcare, and institutional buildings.
Do you provide emergency maintenance services?
Yes, our 24/7 service division offers emergency repairs, equipment retrofits, and maintenance for critical mechanical systems.
Which geographic areas do you serve?
While headquartered in Seattle, we serve projects nationwide with recent work in Oregon, Washington, and Kansas.
What construction methodologies do you employ?
We utilize lean construction principles, prefabrication, and BIM coordination to optimize efficiency and reduce on-site waste.
Can you handle complex renovation projects?
Yes, our team specializes in challenging renovations and tenant improvements, including historic buildings and occupied facilities.
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