Business Details
50+ Years
experience
Your Trusted HVAC Partner in Corona, CA
LDI Mechanical is a family-owned business established in 1963, originally known as Lindy Dennis Industries. Acquired by Lloyd Smith in 1983, we have grown from a small operation in Conroe, Texas, to one of the largest mechanical contractors on the West Coast. Over our 60-year history, we have expanded our annual revenue from $3 million to over $100 million, driven by our commitment to quality, innovation, and customer satisfaction. Our leadership team, including owners Lloyd, Robert, and Mike Smith, brings decades of hands-on HVAC industry experience to executive decision-making. We specialize in multi-family, commercial, and sheet metal fabrication services, supported by a dedicated workforce of over 575 employees, with 25% having served more than a decade.Our in-house engineering team utilizes cutting-edge technologies like AutoCAD, Revit, and BIM to ensure precise HVAC design and code compliance. Our 90,000-square-foot fabrication facility in Corona, California, meets Underwriter Laboratory standards for quality and durability. We prioritize safety through comprehensive programs that empower employees to maintain safe working conditions. With divisions spanning Colorado to California, we deliver time- and cost-efficient solutions for projects of all scales. Our long-standing partnerships with clients like Western National Contractors and Fairfield Residential underscore our reputation as a trusted industry leader.
Services
HVAC Design
Pre-Fabrication
Installation
Multi-Family Division
Commercial Division
Sheet Metal Division
Safety Programs
Details
- Year established: 1963
Highlights and features
- We have 60+ years of family-owned HVAC expertise and $100M+ annual revenue.
- Our in-house engineering team uses AutoCAD, Revit, and BIM technologies.
- 90,000 sq ft UL-certified fabrication facility ensures quality components.
- 25% of employees have served 10+ years, ensuring institutional knowledge retention.
- Safety-first culture with mandatory reporting of unsafe work conditions.
What people say
Quality product
On time and on budget
Professional organization
Save time, money
Superior systems
Services
HVAC Design
Our engineering team specializes in HVAC system design that adheres to building codes and Title-24 standards. Using AutoCAD, Revit, and BIM technologies, we eliminate field conflicts to ensure cost-effective, efficient installations. With LEED consultants and certified energy analysts on staff, we deliver systems optimized for performance and compliance across residential and commercial projects.
Pre-Fabrication
Our 90,000 sq ft Corona, CA facility produces HVAC components meeting Underwriter Laboratory quality standards. This controlled environment enables rapid, cost-efficient production of custom parts while maintaining strict durability benchmarks. The process reduces on-site labor time by up to 40% through precision manufacturing of ductwork, piping, and mechanical systems.
Multi-Family Division
We serve Colorado to California with dedicated teams for apartment complexes and multifamily housing. Our 500+ specialists handle complete HVAC lifecycle needs, from initial design to installation and maintenance. This division has completed over 1,000,000 units with guaranteed on-time delivery and budget adherence, supported by direct communication between field crews and engineering teams.
Commercial Division
Our commercial team manages complex systems including garage exhaust, generator piping, and large-scale climate control. With 60+ employees, we coordinate with general contractors to integrate HVAC systems into major construction projects. Services include custom sheet metal fabrication, code compliance verification, and energy efficiency optimization for office buildings, retail centers, and industrial facilities.
Sheet Metal Division
This Northern California-based division produces standard and custom sheet metal components for building envelopes. Capabilities include flashing, ductwork, and architectural elements meeting strict safety and durability standards. The 20+ member team works closely with other divisions to ensure seamless integration of metal components into larger HVAC systems and building structures.
People
Lloyd Smith
Owner Chairman
Founder and chairman with 35+ years leading HVAC operations. Built company from ground-up installation work to $100M+ revenue. Oversees strategic direction while maintaining hands-on involvement in design and fabrication processes.
Robert Smith
President & CEO
Co-owner driving executive decisions and market expansion. Focuses on maintaining family values while scaling operations across multiple states. Ensures continued emphasis on employee development and customer satisfaction.
Mike Smith
Chief Operating Officer
COO managing day-to-day operations and quality control. Brings field experience to executive leadership, ensuring technical excellence in every project. Prioritizes safety protocols and technological innovation.
Todd Moser
Chief Financial Officer
CFO overseeing financial strategy and resource allocation. Manages budgeting for large-scale projects while maintaining company's financial health through economic fluctuations and growth periods.
Carlos Trujillo
Vice President of Operations
Operations leader coordinating field teams across multiple states. Ensures consistent service quality and timely project delivery. Focuses on workforce development and implementation of safety standards.
Questions
What HVAC services does LDI Mechanical offer?
We provide full-service HVAC solutions including system design, component fabrication, and installation for multi-family, commercial, and industrial projects.
How long has LDI Mechanical been in business?
We've served the HVAC industry since 1963, growing from a Texas-based operation to a West Coast market leader with $100M+ annual revenue.
What safety measures does LDI Mechanical implement?
Our comprehensive safety program requires reporting unsafe conditions, prohibits unsafe work tasks, and prioritizes employee well-being through regular training and equipment standards.
Where does LDI Mechanical operate?
We serve Colorado to California with offices in Corona, Sacramento, Denver, and Livermore, handling projects across the Western United States.
How does LDI Mechanical ensure project quality?
We use AutoCAD, Revit, and BIM technologies for precise design, maintain UL-certified fabrication standards, and employ LEED consultants for code compliance verification.
