Warehouse - Missouri

Changing Steam Boilers to Cambridge HTHV Space Heaters
Retrofit Case Study

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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.