We provided progressive design-build services for a campuswide HVAC replacement program designed to replace R-22 refrigerant with a new leading refrigerant system and improve heating/cooling performance at Denver International Airport.

Denver International needed to identify and upgrade HVAC assets that utilized R-22 refrigerant, enabling compliance with federal environmental requirements. The project covered 283 pieces of equipment across 70 airport addresses. Our team located existing assets, reviewed HVAC use cases with end users, developed design deliverables for full replacement, permitted the project, procured HVAC equipment, partnered with local subcontractors for installation, and commissioned each new unit.

Through our engineer-procure-construct (EPC) progressive design-build model, we supported continuous collaboration with airport stakeholders and rapid decision-making, which allowed the project to be awarded in phases to accelerate procurement and construction. Phased equipment delivery and real-time coordination minimized disruption to airport operations. Open-to-closed book lump sum contracting gave our team and Denver International Airport’s staff the needed level of confidence that the project was adequately funded.

The airport replaced R-22 and modernized HVAC systems ahead of schedule and within budget. The upgrades supported federal regulatory compliance, reduced environmental impact, improved indoor temperature and comfort for staff, and kept critical airport infrastructure in service.