Building Specifications
- 299,500 sq. ft.
- R-4.3- Roof
- R-4.3 - Walls
- R-2.7 - Walls
Before - 500 HP Steam Boiler
Performance
- No zone control
- No fresh air
Operating Costs
Based on:
113,790 therms for 2005-06 heating season
Normalized to 30 year averages
$0.41/ft2 Total cost
After - Cambridge Space Heaters
Performance
- Zone Control
- Even temperatures
- Better Air Quality
Operating Costs
Based on:
65,370 therms for 2006-07 heating season
Normalized to 30 year averages
$0.22/ft2 Total cost
Summary
The Cambridge system used 46% less gas. The Cambridge system saved approximately $57,000/year in gas cost operating at $0.22/ft2 vs. $0.41/ft2.