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).
This publication replaces A3784-15 and is one of five in the Energy Efficiency in Greenhouses series.
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