Building Specifications
- 301,000 ft2
- Over 30 year old building
- Located in Tappan, NY
Before - Indirect Fired Recirculation System
Performance
- Uneven temperatures
- High operating cost
- Cold dock areas
- High maintenance cost
Operating Costs
Based on:
209,935 therms for 2003-04 calendar year @60°
Normalized to 30 year averages
$.70/ft2 Total cost @$1.00 therm
After - Cambridge Space Heaters
Performance
- More even temperatures
- Provides summer ventilation
- Lower Operating costs
- Reduced maintenance cost
Operating Costs
Based on:
159,841 therms for 2008 calendar year @65°
Normalized to 30 year averages
$0.53/ft2 Total cost @ $1.00 therm
Summary
The Cambridge system used 24% less natural gas. The Cambridge system saved approximately $50,000/year operating at $0.53/ft2 vs. $0.70/ft2.
NOTE: If owner would have operated the Cambridge System @ 60° , they would of saved $88,000/year.