Cambridge S-Series Space Heaters use the least amount of outside air to address the facility's combined air infiltration, make-up air and space heating needs. Cambridge manufactures its own proprietary high efficiency, stainless steel burner for the S-Series Space Heater. You can't get the high performance and extended life of a Cambridge burner unless you have a Genuine Cambridge heater. S-Series Heaters are certified for both 160°F temperature rise and 160°F discharge temperature at 0°F outside air. No other heater manufacturer can claim this capability.

The industry's highest temperature rise and BTU/CFM ratio means quick response to load changes. High performance, Blow-Thru technology with the proprietary Cambridge burner provides more BTUs per CFM than draw-thru make-air heaters. Therefore, less outside air and less energy are required for space heating applications. High 10:1 mixing induction ratio minimizes air temperature stratification and provides even temperatures throughout the building. 100% fresh outside air is used to improve indoor air quality, help solve negative air pressure problems and eliminate cold drafts from open dock door. High quality Cambridge construction is designed to outperform and outlast the competition.


The most energy efficient way to heat both new and existing buildings with large open spaces such as: warehouses, distribution centers, manufacturing & assembly plants, indoor sports facilities, automobile dealership service bays, car washes, aircraft hangars, boat storage WWTP facilities and other commercial/industrial facilities.

Building Size: 8,000 to over 3 million sq. ft. and ceiling heights to 100 ft.

Ventilation: With or without powered exhaust.

Projects: New construction, plant expansions, rehab projects, HVAC upgrades and energy saving retrofits.

Can be applied as:

  • A unique induced rotating air system.
  • A perimeter heating system for larger facilities.
  • A push/pull system when mechanical exhaust is required.
  • An air neutralization or air pressurization system.

Enhanced Comfort with Improved Indoor Air Quality: High velocity discharge air from the S-Series Space Heater, provides large volumes of fresh, warm air flowing throughout the building which eliminates higher ceiling temperatures and uncomfortable drafts. The S-Series Heater utilizes 100% fresh air to dilute contaminants generated within the building. This virtually eliminates air quality problems associated with infrared heaters or conventional air heating systems that just recirculate indoor air.

S-Series Blow-Thru® Space Heaters are 40% to 70% more energy efficient than all other types of indirect and direct gas-fired systems used to heat/ventilate large commercial and industrial buildings. Energy saving HVAC retrofits include replacing Boiler, Unit Heater, Air Turnover, Infrared, Make-Up Air (MUA) and Recirculation (80/20) heating systems.