The most economical option for heating greenhouses, forced air unit heaters are easy to install and provide low initial cost and high efficiency. Among the most fuel efficient heating options, hot water is available as in-floor, under bench, and perimeter configurations. Utilizing boilers operating on natural gas, propane, or electric, hot water heat provides a balanced environment.
Heaters are available in natural or propane gas. Stacks and heater hanging kits are available. Distribution of the heat produced by forced air unit heaters is facilitated by Horizontal Air Flow (HAF) fans or less commonly, fan jets.