828 LLC | HVAC & Mechanical Engineering

Licensed
Engineer Led

Engineering Precision. Mission-Ready Delivery.

828 LLC is a Puerto Rico-based mechanical contracting and HVAC engineering firm providing installation, modernization, and maintenance services for commercial, industrial, institutional, and government facilities.

Led by a licensed Professional Engineer, the company delivers design-build HVAC solutions, equipment replacement, air distribution systems, and automated controls integration. 828 LLC supports mission-critical facility environments with reliable performance, technical precision, and schedule-driven execution.

Markets Served

Federal & Military Facilities
Commercial & Industrial Facilities
Institutional & Higher Education
Transportation & Aviation Infrastructure

Proven Performance Across Sectors

Delivering results in mission-critical, commercial, and institutional environments throughout Puerto Rico.

Commercial Airport Terminal

HVAC Upgrades & System Modernization

Air Cargo & Industrial Facility

Full HVAC Installation & Ductwork

Higher Education Facilities

Mechanical Improvements & Cooling Optimization

Aviation

Commercial airport terminal HVAC equipment replacement
System modernization in active airport environments
Installation coordination & operational continuity planning

Industrial & Education

HVAC installation for air cargo & industrial operations
Full ductwork replacement & air distribution
Cooling load optimization for large educational facilities

Federal & Military

HVAC maintenance across multiple federal installations
Mechanical modernization at military facilities in Puerto Rico
Experience in security-sensitive, mission-critical environments

Core Competencies

HVAC Design-Build & Installation

Engineering-led delivery of HVAC system upgrades, replacements, and new installations for commercial and institutional facilities.

Mechanical System Modernization

Retrofit and modernization of chillers, VRF systems, pumps, and packaged units to improve energy efficiency and operational performance.

Air Distribution & Duct Systems

Fabrication, installation, and modification of ductwork and airflow systems supporting facility performance requirements.

Controls & Building Automation

Programming, commissioning support, and integration of HVAC control systems for optimized facility operation.

Maintenance, Repair & Troubleshooting

Diagnostics and corrective services for HVAC performance issues, refrigerant systems, and electrical control faults.

NAICS & PSC CODES

Serving Commercial, Industrial, Institutional & Government Facilities Across Puerto Rico

UEI: KMVWDP9SRXW3 | CAGE: 14EL6

238220

Plumbing, Heating, and Air-Conditioning Contractors

541330

Engineering Services

238210

Electrical Contractors and Other Wiring Installation Contractors

J043

Maintenance/Repair of Plumbing/Heating/Cooling Equipment

J015

Maintenance of Plumbing Systems

R425

Engineering and Technical Services (Professional)

Why Choose 828 LLC?

Engineer-Led Project Delivery Licensed Professional Engineer oversight ensures technical accuracy and compliant execution on every project.
Design-Build Capability Single-source responsibility for HVAC engineering, installation, and system performance — reducing vendor complexity.
Mission-Critical Facility Experience Proven ability to perform work in occupied, operational, and security-sensitive environments without disruption.
Experienced Mechanical Workforce Combined technical expertise across HVAC installation, controls integration, and facility modernization throughout Puerto Rico.

CONTACT US

Ready to deliver engineering-grade HVAC solutions for your facility.

Geraldo Peña-Guzmán

(939) 336-9191

info@828-llc.com

Puerto Rico

Target Market

Federal & Military — Agencies & Installations in Puerto Rico
Commercial Aviation — Airports & Air Cargo Facilities
Industrial & Institutional — Factories, Universities & Campuses
Government Facilities — Municipal & State Buildings