Paper Products Distributors in Wisconsin & Illinois

Cambridge Space Heaters vs. Air Turnover
Comparative Case Study

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Cambridge Space Heaters

Operating Costs

Based on 7,086 Heating Degree Days @ 65°
$0.11/ft2 Gas cost @ $1.00/therm
$0.02/ft2 Electric cost @ $0.08/kWh

$0.13/ft2 Total cost

Building Specifications

  • 215,040 ft2 x 30’ high
  • R-19 Roof / R-11 Walls
  • 33 active doors
  • Located in Milwaukee, WI

Heating System

  • (3) Cambridge Space Heaters
  • Thru wall mounting
  • 3,615 MBH total
  • 20,820 CFM total
  • 15 HP total - intermittent

Air Turnover

Operating Costs

Based on 6,485 Heating Degree Days @ 65°
$0.31/ft2 Gas cost @ $1.00/therm
$0.07/ft2 Electric cost @ $0.08/kWh

$0.38/ft2 Total cost

Building Specifications

  • 228,000 ft2 x 27’ high
  • R-19 Roof / R-10 Walls
  • 23 active doors
  • Located in Chicago, IL

Heating System

  • (2) Air Turnover Heaters
  • Floor mounting
  • 6,250 MBH total
  • 200,000 CFM total
  • 40 HP total - continuous

Summary

The Cambridge system used 66% less total energy in a colder climate. If the 228,000 ft2 facility had installed a Cambridge system they could have saved approximately $57,000/year operating at $0.13/ft2  vs. $0.38/ft2.