Cambridge Space Heaters
Operating Costs
Based on 6,485 Heating Degree Days at 65°
$0.18/ft2 Gas cost @ $1.00/therm
$0.03/ft2 Electric cost @ $0.08/kWh
$0.21/ft2 Total cost
Building Specifications
- 280,000 ft2 x 33’ high
- R-14 Roof / R-8 Walls
- Located in Chicago, IL
Heating System
- (4) Cambridge Space Heaters
- Roof top mounting
- 7,600 MBH total
- 50,000 CFM total
- 40 HP total - intermittent
Infrared Heating
Operating Costs
Based on 6,440 Heating Degree Days at 65°
$0.38/ft2 Gas cost @ $1.00/therm
$0.01/ft2 Electric cost @ $0.08/kWh
$0.39/ft2 Total cost
Building Specifications
- 451,000 ft2 x 35’ high
- R-15 Roof / R-10 Walls
- Located in Detroit, MI
Heating System
- (48) Infrared Tube Heaters
- Suspended mounting @ 28’
- 9,600 MBH total
- No outside air
- 12 HP total - intermittent
Summary
The Cambridge system used over 46% less total energy. If the 451,000 ft2 facility had installed a Cambridge system they could have saved approximately $81,000/year operating at $0.21/ft2 vs. $0.39/ft2.