Project Traits
State: New York
Congressional District: NY08
Organization Type: Commercial
Partner Organization(s) Type: None or Unknown
Energy Sector: Buildings
Energy Subsector: Residential, Energy Efficiency
Project Start Year: Unknown
Project Launch Year: 2025
Government Support Received: State Grant [Empire Building Challenge] for Unknown Amount
Outcomes & Impacts
Private Investment: Unknown
Jobs Announced or Created: Unknown
People Served: Unknown
Projected Economic Impact: Unknown
Lessons Learned: Leading-edge Sunamp thermal batteries use phase change material to store heat energy at densities 4 times greater than water, allowing in-unit equipment placement, thereby eliminating building-wide distribution piping and stand-by losses while saving space compared with traditional cylinder-style water heaters. Most of Chartered Properties’ building retrofits will recapture rejected heat pump compressor heat created as a by-product of space conditioning and transfer it to pre-heat domestic hot water.
Today, carbon neutrality at 78 Herkimer and most all Chartered Properties’ multifamily portfolio will be achieved by replacing the gas-fired equipment currently serving the buildings. At Herkimer, twenty-nine in-unit combi-boilers will be decommissioned and replaced with electric powered thermal storage for domestic hot water and heat pumps for space conditioning.
Notably, the portfolio-wide energy retrofit will implement unit-by-unit rather than relying on building-wide mechanicals. Single unit mechanicals simplify installation and reduce the scale and complexity of thermal distribution, system operation, balancing and ongoing maintenance. Importantly, the switch from centralized to unitized equipment allows a granular, unit-level phase-in geared precisely to apartment access and precisely tailors to each building’s financial and logistical requirements.