Air Turnover Heating Systems:
Industrial and Warehouse Heating Information
© 2005-2025 Thermo-Cycler Industries Inc.
Air Turnover is a generic HVAC industry term for an indirect fired, floor
mounted type of gas-fired or oil-fired heating equipment that is used in
large open area industrial buildings and warehouses. Air turnover type
equipment recirculates large amounts of hot air that is normally
trapped at the ceiling and reduces air stratification by frequently
rotating the air within the building space. When properly engineered
and applied, the air turnover heating method will result in a very
uniform temperature throughout the space that will save energy,
improve comfort, and greatly reduce possible condensation on stored
products within the space. Unlike direct fired equipment, indirect fired
air turnover equipment does not add moisture from combuston
byproducts into the building environment.
The original air turnover concept was a patented process (Patent
#2984416) pioneered as Johnson Air-Rotation by Johnson Heater Corp.
over 50 years ago and Air Rotation has been a registered trademark
(Serial Number 73801842) of Johnson Heater Corporation since
December 4, 1990.
Since 1984, Thermo-Cycler Industries Inc. has specialized in energy
efficient heating of industrial buildings and warehouses.
ThermoRotation and ThermoCycler are registered trademarks (Serial
Numbers 1893585 and 1591903) of Thermo-Cycler Industries Inc. For
more information about the most energy efficient warehouse heating
and ventilation systems for pre-engineered industrial buildings, please
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