Cambridge Space Heaters

Operating Costs

Based on 4,913 Heating Degree Days @ 60°
$0.11/ft² Gas cost @ $1.00/therm
$0.01/ft² Electric cost @ $0.08/Kwh

$0.12/ft² Total cost

Building Specifications

• 999,700 ft² x 35’ high
• R-14 Roof / R-10 Wall

Heating System

• (8) Cambridge Space Heaters
• 16,192 MBH total
• 81,920 CFM
• 60 HP total - intermittent

Direct Fired Recirculation 

Operating Costs

Based on 4,913 Heating Degree Days @ 60°
$0.37/ft^₂ Gas cost @ $1.00/therm
$0.05/ft² Electric cost @ $0.08/Kwh

$0.42/ft² Total cost

Building Specifications

• 814,848 ft² x 37’ high
• R-14 Roof / R-10 Walls

Heating System

• (4) Direct Fired Recirculation
• 23,548 MBH total
• 215,000 CFM
• 120 HP total – continuous

Summary

The Cambridge system used over 71% less total energy with less temperature variation. If the 814,848 ft² facility had installed a Cambridge system they could have saved approximately $244,000/year operating at $0.12/ft²  vs. $0.42/ft².