About Union Mill:
- Union Mill is a 146-year-old nineteenth-century Baltimore mill.
- The building was closed in 2002 and declared a sick building due to alleged ventilation issues.
- The development company wanted to adapt the old industrial space to a mixed-use facility that would contain 56 one- and two-bedroom apartments, 30,000 square feet of office space and a 1,500-square-foot café restaurant in the former boiler house building.
- The stone walls were more than 2-feet thick, making a ducted option impossible.
- The building’s pitched roof would not support boilers, chillers or outdoor condenser units.
- With its urban setting, outdoor space surrounding the building was limited, making outdoor unit size of paramount importance.
- Considerable load variation between open-air retail space and individual apartment units.
- Need for individual zone control.
- VRF zoning equipment costs were less than expected.
- The outdoor units are among the quietest available.
- The outdoor units’ small footprint would preserve the public outdoor space.
- The indoor units come in many diversified configurations, which provided the architect with numerous choices for installation in a variety of zones.
- The R2-Series has simultaneous cooling and heating capabilities for the varied spaces.
- Ductless capabilities would accommodate the wall thickness.
- The TG-2000™ software allows the HVAC energy consumption for each zone to be monitored and individually billed.
- A single Seawall PC (from a remote office) can control and monitor all functions.
- The equivalent standards of LEED Silver.
- $164,258 cash rebate through Baltimore Gas & Electric’s “Smart Energy Savers Program.”
- Average apartment energy use only $50/month.