HVAC Replacement Wilkins Cottage Building 156

The project will replace the aging HVAC system at Wilkins Cottage in Building 156 located in Napa, California, with a modern VRF heat recovery system to ensure efficient heating and cooling. Work encompasses extensive site modifications including trenching up to 24 inches deep and approximately 100 feet long to accommodate new utility lines, widening the surrounding road to meet a minimum 20-foot width by removing and replacing asphalt pavement, installing new concrete curbs, and making minor landscaping adjustments. Interior repairs involve patching walls damaged during mechanical work, while new roof dormer louvers will be added to provide adequate outside air intake. Concrete housekeeping pads and anchorages will be constructed to securely support the new HVAC units, which will be fully installed along with refrigerant piping and all associated components. The system will include ceiling supply and return diffusers with ductwork, new ceiling exhaust fans, upgraded attic insulation, and complete electrical upgrades to support the new equipment. All work must be performed in compliance with applicable codes and standards, with performance centered at the Napa site under the oversight of the California State Hospitals, Department of. The project is forecasted for future release, with primary point of contact being Associate Construction Analyst Chile Garcia, reachable via phone or email for further inquiries. The facility remains operational during construction, requiring careful coordination to minimize disruption, and all removed materials and obsolete equipment will be properly disposed of or recycled as required. Completion is expected to significantly improve indoor environmental quality, energy efficiency, and long-term operational reliability of the building.