United Mechanical Contractors

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About United Mechanical Contractors
United Mechanical Contractors operates as a union-affiliated general contractor headquartered in Simi Valley, California, delivering specialized HVAC solutions across Southern California. Founded over two decades ago, the company holds California license #759496 and C-20 (HVAC) classification alongside a general B license. DIR registration #1000004362 confirms their status as a registered contractor, while ongoing affiliations with SMART Local Unions 105 and 104 demonstrate sustained labor partnership. Their service footprint encompasses Ventura County, Los Angeles County, Orange County, Santa Barbara, and Riverside, with particular depth serving Simi Valley Unified School District and additional municipal clients throughout the region.
This contractor distinguishes itself through an exemplary safety record, maintaining an EMR rating of 0.84 that reflects rigorous weekly safety meetings and comprehensive job hazard analyses. Their institutional portfolio spans major public works, including collaborations with Los Angeles Community College District, UCLA Santa Monica Hospital, Los Angeles International Airport, and water districts serving Southern California populations. Bonding capacity at 1.44% for the first $500,000 demonstrates financial stability for residential and commercial projects alike. Small business certifications through California's DGS and TheNetwork programs further validate their eligibility for set-aside projects, while their portfolio of partnerships with established general contractors like Kiewit, Walsh, and Obayashi evidences industry trust built over decades of project execution.
No customer reviews have been submitted to date, precluding named technician highlights or specific residential service scenarios. However, their extensive public works experience servicing educational institutions and healthcare facilities suggests a capacity for complex, multi-stakeholder projects requiring coordination beyond standard residential HVAC work. Their documented projects for Simi Valley Unified School District include sound studio HVAC replacement and campus-wide damper installations, demonstrating ability to address specialized environmental control requirements.
Working Hours
| Sunday | Closed |
| MondayToday | 6 AM–5 PM |
| Tuesday | 6 AM–5 PM |
| Wednesday | 6 AM–5 PM |
| Thursday | 6 AM–5 PM |
| Friday | 6 AM–5 PM |
| Saturday | Closed |
Services
HVAC System Installation
Complete heating and cooling system installation for new construction and replacement projects.
HVAC Repair & Maintenance
Diagnostics, tune-ups, and repair services for residential and commercial HVAC systems.
Rooftop Unit Replacement
Specialized replacement of commercial rooftop HVAC units, documented on educational facilities.
Retrocommissioning
Optimization of existing HVAC systems for improved efficiency and performance in older buildings.
Indoor Air Quality Solutions
Ventilation assessment and improvements addressing air circulation in residential and commercial spaces.
Fire Alarm Integration
Campus-wide fire alarm upgrades with HVAC system coordination for safety compliance.
Climate Control for Specialized Spaces
Environmental control for sound studios, laboratories, and facilities requiring precise temperature regulation.