Greenhouse Unit Heaters: Types, Placement, and Efficiency

SKU A3907-02

Author(s) Scott Sanford.

The air temperature of a greenhouse is critical for plant growth and disease control, and the type of heater used to heat the air can have a significant impact on energy usage and cost. This publication explores the differences among unvented, gravity-vented, power-vented, separated-combustion, and high-efficiency unit heaters, and explains how heated air distribution can affect energy consumption (6 pages; Revised in 2011).