Hamilton, NY
Square Footage: 8,160
Year Built: 1972
Annual Energy Cost: Projected annual Conventional Energy Cost Savings: $7,715/year
The Town of Hamilton Installed a 10-ton ([2] 5-ton units) water-to-air geothermal heat pump system at their Highway Garage. The geothermal system will displace at least half of the fuel oil currently used at the garage
for heating, reducing greenhouse gas emissions and the carbon footprint of the building.
“The geothermal system will displace at least half of the fuel oil currently used at the garage for heating, reducing
green house gas emissions and the carbon footprint of the building.”
-Sue Reymers, Project Director
Installation and Energy Details
Prior Energy system: Oil furnace using ~3,733 gallons of oil/year. No cooling
New Energy System: 10 ton water-to-air geothermal heat pump (heating and cooling capacity)
New Insulation or Sealing: --
System Specifications:
- Geothermal: GeoStar - Aston Dual Hydronic 120 (ELT- 120/50). Installation done by NP
Results
- Expected 2020 oil usage: 1,161 gallons; total reduction: 2,572 gallons
- Projected annual Conventional Energy Cost Savings: $7,715/year
Motivation for Heat Pump Technology
- The Town of hamilton decided to install a geothermal heat pump at their Town Garage facility. The town wanted to provide comfortable heating an cooling while also reducing their carbon footprint. Their new geothermal heat pump is a 10-ton water-to-air system that is comprised of two 5 ton units. The units have return air grilles located at the floor of the garage and supply air registers located up high that blow down into the space below. The heat pumps are served by a energy efficient variable speed pump on a geothermal flow center. Each of the loops is 400 feet deep and is broughtinto the building and connected to a supply and return manifolds.
- The town recieved a $50,000 grant from NYSERDA and an additional $12,300 from individual investments. The final cost to the town was just $15,000. The geothermal system is projected to displace more than half of the garages fuel oil use. According to the towns calculations the geothermal system will also save them $7,715/year in conventional energy costs. Since installing their heat pumps they are enjoying increased thermal comfort and are already noticing reduced energy bills.
Expenses
Case Study: Hamilton Town Garage
| Cost Category | Initial Cost | Incentives | Final Cost |
| Ground Source Heat Pump | $77,300 | $50,000 (NYSERDA Grant) | $15,000 |
| $12,300 (Investment by others) | |||
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