Cambridge Space Heaters

Operating Costs

Based on 5,441 Heating Degree Days
$0.19/ft² Gas cost @ $1.00/therm
$0.02/ft² Electric cost @ $0.08/Kwh

$0.21/ft² Total cost

Building Specifications

• 62,000 ft2 x 34’ high
• R-19 Roof / R-3 Walls

Heating System

• (2) Cambridge Space Heaters
• Roof top mounting
• 1,800 MBH total
• 11,400 CFM total
• 6 HP total – intermittent

Air Turnover

Operating Costs

Based on 5,441 Heating Degree Days
$0.33/ft² Gas cost @ $1.00/therm
$0.05/ft² Electric cost @ $0.08/Kwh

$0.38/ft² Total cost

Building Specifications

• 24,000 ft² x 34’ high
• R-19 Roof / R-3 Walls

Heating System

• (1) Air Turnover Heater
• Floor mounting
• 1,250 MBH total
• Unknown CFM
• 6 HP total – intermittent (turned off due to noise)

Summary

The Cambridge system used over 45% less total energy. If the 24,000 ft² facility had installed a Cambridge system they could have saved approximately $4,000/year operating at $0.21/ft²  vs. $0.38/ft².