Apogee proposed three design concepts to resolve comfort issues due to draft and insufficient heating capacity.
The VA chose an option which includes:
- Total system redesign
- Demolition of existing VRF system, energy recovery unit, and humidifier
- Installation of new variable air volume system with energy recovery
- Installation of hydronic baseboard radiators as described in the mid-cost proposal
- A new, side-by-side VAV unit on the roof, with a total energy recovery wheel
- New VAV terminal units with hot water reheat coils in the attic
- Construction of a boiler room in the existing garage of each building and installation of a new gas-fired boiler
- Installation of pump to circulate hot water
- Hot water fin-tube baseboard radiators in each occupied space
- Insulation of attic and hydronic heaters to protect hot water heating pipe serving the VAV boxes
