Cambridge Engineering, Chesterfield, MO, announces an energy efficient Blow-Thru Space Heating product line with 100% combustion efficiency that offers up to 70% energy savings for commercial and industrial applications. Direct-fired blow-thru space heaters include patented Cambridge stainless steel burner technology. The use of 100% fresh outside air improves indoor air quality. The green heater design is “LEED-Ready” and ASHRAE 90.1 compliant. Energy savings are documented by third party building studies with utility bills and computer energy modeling. Blow-Thru Heating systems have qualified for utility rebates and EPAct Federal tax benefits worth millions of dollars.