Use the links below to learn more about the heating systems within each of the residential buildings on campus.

Heating and Cooling Standards

Central Mechanical Systems

In 1998 the College developed a central chilled water plant to address the majority of the campus’ cooling needs. Where possible, buildings are designed to connect into central utility systems to take advantage of the load diversity. The central systems are almost always more efficient than individual distributed systems (which was the College’s design strategy before 1998).

Mechanical Systems

Central Utilities Site Plan

Mechanical and lighting systems consume the majority of energy used by buildings. Dependence on fossil fuels cannot be reduced without optimizing heating, ventilating and air conditioning (HVAC), hot water, process utilities, controls and energy management systems.

Building Lighting

Efficient lighting design begins with daylighting; electric lighting should then be designed to maximize savings from daylighting. Because lamp, ballast and light fixture efficiencies keep improving each year, it is possible to design high-quality lighting systems with lower and lower wattage densities. More efficient plug-load and hard-wired equipment is also now available, due in part to the Energy Star program. Lighting uses over 20% of the electricity on campus. The College strives to use energy-efficient lighting via the following strategies:

Energy Conservation Projects

Since 2003, the College has invested approximately $200,000 per year in energy conservation projects, and these projects have had a net simple payback of approximately 2.3 years. Examples of some of these projects are described below.