Building Specifications
- 700,000 ft2
- 17 year old building
- Located in Shenandoah Valley, VA
Before - Make-Up Air
Performance
- Uneven temperatures
- Poor system control
- High operating costs
- Deteriorating system
Operating Costs
Based on:
159,814 therms for 2007-08 heating season
Normalized to 30 yr avg. @ 59° avg. temp
$0.23/ft2 Total cost @ $1.00/therm
After - Cambridge Space Heaters
Performance
- More even temperatures
- Lower operating Cost
- Better system control
- Qualified for EPAct tax deduction
Operating Costs
Based on:
116,235 therms for 2010-11 heating season
Normalized to 30 yr avg. @ 61° avg. temp
$0.17/ft2 Total cost @ $1.00/therm
Summary
The Cambridge system used 27% less gas and provided a higher average temperature. The Cambridge system saved approximately $42,000/year in gas cost operating at $0.17/ft2 vs. $0.23/ft2. The savings would have been 35% if the same building temperature had been maintained.