Cambridge vs. Draw-Thru Make Up Air

(80% Recirculation - 20% Outdoor Air)

Large Warehouse #1		Large Warehouse #2

1.7 million ft² x 40' high, R-13 Roof/R-10 Walls		1.4 million ft² x 45' high, R-19 Roof /R-19 Walls
Cambridge Heating System		Make-Up Air Heating System (80/20 Recirculation)
• (12) Direct Gas-Fired Blow-Thru™ Space Heaters • Rooftop Mounting	• 32,800 MBH Total • 157,200 CFM Total • 160 HP Total - intermittent	• (8) Direct Gas- Fired Draw-Thru Make-Up Air Heaters • Rooftop Mounting	• 77,000 MBH Total • 800,000 CFM Total • 600 HP Total - continuous

Cambridge Heating System used 68%
less total energy on a cost per ft² basis.

If Large Warehouse #2 had installed a high efficiency Cambridge System they could have saved