Harvard's Climate Initiative
COMMIT > ACT > THRIVE
Eco-Friendly Home Tours 2026
Earth Day In MaySaturday, May 30, 2026
2:00 pm - 4:00 pm
(Rain date: Sunday, May 31)
24 Bolton Road – new construction 2025
- Geothermal HVAC
- Two vertical geothermal wells on the north side of the house, each 450’ deep
- WaterFurnace Series 7 for the first floor (2 zones) and basement (1 zone)
- WaterFurnace Series 5 for the second floor (1 zone)
- Code-required electric backup
- Skilling & Sons installed wells, Boucher Energy Systems installed the HVAC
- Solar: 23 panels, 10 kW, installed November 2025
- EV: 2021 Tesla Model 3
- Lawnmower: Electric Stihl RMA510
18 Lover’s Lane – older home
- Geothermal HVAC – Ground source heat pumps: 1 integrated unit and 1 split for second floor.
- Rooftop Solar: 12.6kWh (45 panel) LG280S1C-B3,
- Inverter: SolarEdge with Optimizers
- Hot water heat pump with desuperheater supply tank
- EV: VW ID Buzz, Tesla Model 3
- E-bike: Aventon Lvl2
- Lawn Equipment: Ego Riding mower, push mower, string trimmer, backpack blower, edge trimmer, chain saw, snow blower
21 Mill Road – Net Zero new construction 2017 “Rivendell”
- Air Source HVAC comes from an air source heat pump which is the only load greater than the electric car
- Solar – 56 panels generate more electricity (on a yearly basis) than Rivendell consumes.
- Batteries store energy from solar to be used after sundown.
- Triple glazed windows.
- Insulation: Twelve inches of open and closed cell insulation in the walls and roof.
- EV – 2020 Chevy Bolt LT, 2023 Chevy Bolt EUV
- E-bike: Freedare Saiga
3 Still River Depot Road – older home
- Air Source HVAC: 3 Mitsubishi Air source heat pumps (mini-splits) ranging from 9,000 – 2,000 BTU
- Solar : Rooftop – 8.140 kilowatts (kW) System – (22) Solaria PowerXT-370 (370 watt) panels
- Inverter Generac 7.6 kW
- 12kWh Battery: (4) Generac PWRcell 3.0 kWh DCB
- transfer switch: Automatic – Generac PWRcell ATS
- Hybrid Water Heater: Gal State – HPX-66-DHPTNE
- EV – 2025 Hyundai Ioniq 5N
- Chicken water heated using rooftop solar
207 Still River Road – older home
- Geothermal HVAC
- WaterFurnace Series 7 for the first floor (1 zone)
- WaterFurnace Series 7 split unit for the second floor (1 zone)
- Three vertical geothermal wells, each 450’ deep
- System installed July 2022
- Solar: 34 REC panels, 13.7 kW with Enphase IQ8+ Microinverters, installed July 2022
- Hot water heat pumpwith desuperheater supply tank
- EVs: 2025 Volkswagen ID Buzz and 2025 BMW i4
- Robotic Electric Lawnmower: Husqvarna Automower 450XH
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