Business Details
50+ Years
experience
Trusted HVAC Solutions for Multi-Family & Commercial Projects
LDI Mechanical is a family-owned business that has been delivering exceptional HVAC solutions since 1963. Founded as Lindy Dennis Industries and acquired by Lloyd Smith in 1983, we have grown from a $3 million annual revenue operation to a $100 million enterprise while maintaining our commitment to quality and innovation. Our leadership team, including owners Lloyd, Robert, and Mike Smith, brings decades of hands-on industry experience to every project. With over 575 employees, including 25% who have served with us for more than a decade, we combine cutting-edge technology like AutoCAD and BIM with time-tested expertise. Our 90,000-square-foot fabrication facility in Corona, California, and divisions specializing in multi-family, commercial, and sheet metal fabrication enable us to handle projects of any scale.We prioritize safety above all, maintaining rigorous standards that ensure every employee returns home safely each day. Our partnerships with industry leaders across the western United States demonstrate our ability to consistently deliver on-time, on-budget results. From engineering design to installation, our approach eliminates field conflicts through advanced planning and prefabrication. This dedication to excellence has made us the preferred HVAC contractor for major developers and builders. Today, as we approach our 60th anniversary, we remain focused on building lasting relationships through reliable service and technical mastery.
Services
Engineering Design
Pre-Fabrication
Installation
Multi-Family HVAC
Commercial HVAC
Sheet Metal Fabrication
Safety Compliance
Details
- Year established: 1963
Highlights and features
- Family-owned since 1963 with proven industry leadership
- 60+ years of continuous HVAC innovation and improvement
- 25% of employees with 10+ years tenure ensuring expertise
- Advanced AutoCAD/BIM technologies prevent field conflicts
- Comprehensive safety program protects all team members
What people say
Quality product
On time
Honest and hardworking
Save time and money
Superior systems
Services
Engineering Design
Our engineering team specializes in HVAC system design that complies with building codes and Title-24 standards. Using AutoCAD, Revit, and BIM technologies, we create precise plans that prevent field conflicts. This advanced planning ensures cost-effective installations while maintaining energy efficiency and regulatory compliance for both new constructions and retrofit projects.
Pre-Fabrication
Our 90,000 sq ft Corona facility produces HVAC components under strict quality controls. We maintain UL-certified standards through efficient manufacturing processes and extensive raw material inventory. This approach reduces on-site construction time while ensuring consistent product quality across all commercial and multi-family projects we support.
Installation
With experienced supervisors coordinating between engineering and field teams, we guarantee first-time installation success. Our process combines technical expertise with rigorous quality checks throughout project execution. This integrated approach minimizes rework while maintaining strict adherence to project timelines and budget requirements for all mechanical systems.
Multi-Family HVAC
We specialize in large-scale residential HVAC solutions with dedicated teams operating from multiple regional offices. Our division handles projects from Colorado to California with consistent quality standards. With over 500 specialized personnel, we deliver energy-efficient systems that meet both developer requirements and tenant comfort expectations across thousands of units annually.
Commercial HVAC
Our commercial division manages complex projects including garage exhaust systems and generator piping. With 60 dedicated professionals, we handle large-scale installations requiring specialized engineering solutions. This team supports diverse commercial applications while maintaining coordination with other trades to ensure seamless project integration across all building types.
People
Lloyd Smith
Owner & Chairman
Founder with over 35 years leading LDI Mechanical's growth from $3M to $100M annual revenue. Provides strategic direction based on extensive field experience in HVAC installation and operations management.
Robert Smith
President & CEO
Executive leader driving company expansion and market analysis. Focuses on maintaining industry benchmarks while overseeing business development and operational strategy implementation across all divisions.
Mike Smith
Chief Operating Officer
Manages day-to-day operations with deep HVAC industry knowledge. Ensures quality control across projects while implementing process improvements that enhance efficiency and client satisfaction.
Todd Moser
Chief Financial Officer
Financial strategist responsible for budget management and economic planning. Oversees financial operations that support the company's growth while maintaining fiscal responsibility across all projects.
Carlos Trujillo
Vice President of Operations
Operations executive managing project execution across regions. Coordinates between engineering, fabrication, and installation teams to ensure consistent quality and timely delivery of all HVAC systems.
Questions
What HVAC services does LDI Mechanical offer?
We provide full-service HVAC solutions including engineering design, prefabrication, and installation for multi-family, commercial, and industrial projects.
Which areas do you serve?
We operate across California with offices in Corona, Sacramento, and Livermore, plus a Colorado office in Denver serving the Rocky Mountain region.
How does LDI ensure project quality?
We use advanced AutoCAD, Revit, and BIM technologies for precise design, combined with UL-certified fabrication processes and experienced installation teams.
What safety measures do you implement?
Our comprehensive safety program includes regular training, equipment checks, and mandatory reporting of unsafe conditions to protect all workers.
Can you handle large-scale projects?
Yes, with over 500 employees in our multi-family division and 60 in commercial operations, we manage projects of any size efficiently.
