Research Project Information

Research Project Summary Information

Evacuated Solar Tube Heating System for Our Hill Farm(ST10216-1)

Thomas Gervais


The owners of Our Hill Farm have a small residence on their 28 acre property. This residence is currently heated with baseboard heaters and a propane-fired boiler. The owners desire to convert the baseboards to a radiant heated floor system fired by a tankless Energy Star® boiler. To reduce their energy use further, evacuated-tube solar collectors will be installed to heat water for space heating and domestic hot water requirements.

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Project Description

The Contractor (Our Hill Farm) shall design and install an evacuated-tube solar collector system for the residence located at Our Hill Farm. The performance of the system shall be monitored for one year. The project's results shall be disseminated through technical and consumer interest articles and the Contractor’s Internet Web page.


The project determined that a home in northern New York can meet a significant portion of the space and water heating requirements using a solar thermal system. Project results were presented at a Capital Region Energy Forum event and published in a local newspaper.

Project Results

The system reduced the residence’s propane usage by 640 gallons (56% reduction), saving approximately $1,900. The circulating pump between the house and the collectors consumed 150 kWh. The system cost $56,000 to design and install without incentives, tax credits, monitoring expenses, and project management expenses.


Thomas Gervais
Our Hill Farm 66 Liebig Road
Granville, NY 12832

Principle Investigator

Tom Gervais

Universities Involved


Project Type:

Product Demonstration

Technologies Types:

Building Systems
Solar Thermal (heating & cooling)

NYSERDA Contact Information

Robert Carver


R&D - Buildings Research

Contract Details

Start Date: 1/11/2010
Project Status: Active
Contract Number: ST10216-1

Last Updated: 1/10/2014