42 Apartment building in Brooklyn - 31,708 sq ft

Heating system - Oil fuel steam boiler providing heat and hot water to 42 apartments and 42 Bathrooms.

Complaints - uneven heating throughout and high oil bills

Solution - installation of master vents in specific areas of the building to allow steam to travel freely and quickly to each radiator; installation of thermostatic radiator valves on each radiator to allow occupants to control the heat level in each room; installation of storage tanks for domestic hot water to remove domestic hot water load from the boiler; and installation of proper heating controls with the correct set up.

We used heating degree days to determine the gallons used per heating degree day. We did not include domestic hot water usage in our savings calculations. The savings are based on heating only.

Prior to our work the average oil gallons used for heating during the winter over 16 years was 24,767 gallons. After our work was completed, the average gallons used for heating was 15,459 gallons. This is a 42% savings without replacing the boiler or fuel source.