A system designed to introduce and maintain air pressure between the layers of polyethylene film in double-layered greenhouses. This assembly typically includes a fan or blower, and necessary hardware for installation. An example would be a small, electrically powered fan connected to an inflation tube running along the length of a greenhouse’s double-poly covering.
This pressurized air gap provides significant insulation, reducing heating costs during colder months and potentially offering some cooling benefits in warmer periods. Early adoption of this technique stemmed from efforts to improve energy efficiency in agricultural practices. The improved insulation also results in more stable internal temperatures, contributing to a more consistent growing environment for plants.
