Used gas fired heaters are great for heating large areas within your warehouse or storage facility. They require a fuel, but are safe to use indoors. This is due to the built in low oxygen shutoff, which senses the amount of oxygen in the air. If oxygen levels drop too low, the heater shuts off automatically.
We currently have two units, the FE-400 and FE-125, which are 400,000 and 125,000 BTUs respectively. These used Reznor units are in good working condition and are ideal for variously sized industrial or warehouse settings. Used heaters are sold at a fraction of the cost of buying new, so consider American Surplus Inc. for your any of your used material handling equipment needs.