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Project Specifications

The Innkeepers at the Centennial House had a dilema: How does one go

about updating a historic landmark and making it energy efficient, without

compromising the facade of the building? With help from the Sandri

Companies, the Centennial House was able to both update their system

and keep the historic integrity of their landmark.

Sandri installed a fully automated Okofen PE 32 Pellet Boiler with auger

feed from an internal Flexilo that stores 5.5 tons of pellets. This will replace

3,000 gallons annual heating oil usage with locally produced wood pellet

fuel. Sandri also converted the building from steam to hot water, dramati-

cally increasing the overall efficiency of the system. A section of the garage

was converted into a boiler room for the new system. This will be used as

the main source of heat and hot water in the building, producing 109,500

BTUs per hour and carrying more than 95 percent of the heating load in the

house.

Sandri intends to use the Centennial House as a demonstration site for

antique homeowners who wish to reduce their dependency on oil while still

preserving the style and character of their homes.

Conversion from steam to

hot water via pellet boiler in

historic house

Steam heat produced by oil

boiler

Okofen PE 32 Pellet Boiler with auger feed from an internal Flexilo

Mass DOER and the

Massachusetts High

Performance Buildings

Grant Program

The Centennial House » Wood Pellet Boiler System

94 Main Street, Northfield, MA

Completion Date: April 2012

An Energy-Saving Update

Left: The Centennial House Bed and Breakfast with innkeepers. Upper Right:

The New Okofen Pellet Boiler System. Lower Right: A Sandri wood pellet

delivery to the Centennial House

Project Type

Original System

Renewable Equipment

Funding

System Benefits

Switch renewable source of heat

Lower operating cost

Preserve antiquity of exterior

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