Cambridge Space Heaters
Operating Costs
Based on 7,518 Heating Degree Days @ 65°
$0.20/ft2 Gas cost @ $1.00/therm
$0.03/ft2 Electric cost @ $0.08/kWh
$0.23/ft2 Total cost
Building Specifications
- R-14 Roof / R-10 Walls
- 1,400,000 ft2 x 36’ high
- Located in Upstate NY
Heating System
- (17) Cambridge Space Heaters
- Roof top mounting
- 37,400 MBH total
- 197,150 CFM total
- 162.5 HP total - intermittent
Infrared Heaters
Operating Costs
Based on 6,821 Heating Degree Days @ 65°
$0.34/ft2 Gas cost @ $1.00/therm
Electric cost insignificant
$0.34/ft2 Total cost
Building Specifications
- R-22 Roof / R-15 Walls
- 1,075,000 ft2 x 37’ high
- Located in Southern MI
Heating System
- Infrared Tube Heaters
- Suspended mounting
- No outside air
Summary
The Cambridge system used 32% less total energy with more even temperatures in a colder climate with less insulation.
If the 1,075,000 ft2 facility had installed a Cambridge system they could have saved approximately $118,000/year operating at $0.23/ft2 vs. $0.34/ft2.