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Indoor Environmental Services (IES) is a Full Service Facility Solutions Mechanical Contractor.

Our company provides design, engineering and construction for Facility Solutions, including HVAC system applications, service and maintenance, sheet metal fabrication and Facility Solutions projects for commercial, institutional, industrial, agricultural, health care, food and beverage processing facilities. We are USGBC accreditied and certified in green building design, construction and operations.

We are pleased to offer the following services:


Facility Solutions

  • Design/Build Construction Services
    Tenant Improvements
    Mechanical System Retrofits
    HVAC System Optimization
    Professional Engineering
    Title-24 Calculations
    CAD Design
    Waste Management
  • Building Evaluation
    Energy Saving Calculations
    Long-term Operational Costs Analysis
    Building Automation
    Controls Design and Installation
    Project Management
    Performance Contracting
    Remote Web Based Monitoring


HVAC/Architectural Sheet Metal

  • Preventive Maintenance Programs
    Equipment Service and Repairs
    Retrofits Energy Savings
    Water Treatment Systems
    EPA Certified Technicians
    24/7 Emergency Service
  • In-house Design & Fabrication Team
    On-site Duct & Metal Fabrication
    Sight Screen Fabrication & Design
    Interior Sheet Metal Custom Design
    Exterior Sheet Metal Custom Design


IES takes pride in our reputation for providing quality work to the Northern California Region. We are privileged to receive the majority of our work through customer referrals. IES operates three offices and shop facilities. We fabricate ductwork, fittings, architectural sheet metal and miscellaneous sheet metal parts on-site. Our highly trained and skilled employees operate as members of our customers’ team: from job dedicated Project Managers, Estimators, Registered Professional Engineers, and construction crews, to Certified Energy Managers and controls and service technicians.

More about us:
Incorporated: 1988 California
Business Licenses:
California Contractor’s License # 646794

C-4 Boiler
C-10 Electrical
C-20 Heating, Ventilating and A/C
C-36 Plumbing
C-38 Refrigeration
C-43 Sheet Metal & Architectural Structures
Class B – General Contracting

Nevada Contractor’s License # 0077866

C-21 Refrigeration & Air Conditioning
Mechanical Service Contractors of America (MSCA) Star Certified Contractor
Registered Professional Engineers
USGBC LEEDTM Certified professionals (LEEDTM)
Certified Energy Manager (CEM)
Certified Plumbing Engineers (CIPE/CPD)

Our business philosophy promotes quality, honesty, value and teamwork. Every employee incorporates this commitment within every aspect of their work. We create a Team approach between the trades throughout design and construction on every project. Our experience shows this method increases communication, productivity and quality of construction, saving our customers both time and money while ensuring the highest possible quality result.

IES Builds – great partnerships - great teams - great building systems


About IES