E-Tech direct-fired heaters are designed to meet the thermal needs of your system while minimizing fuel usage. Our engineers specialize in the design of two types of high efficiency direct-fired heaters: vertical cylindrical heaters for smaller applications and horizontal cabin heaters for larger ones. We use top-of-the-line burners that can be fueled by natural gas or oil, and that minimize NOx and CO2 emission levels. Our long-life units can be engineered precisely to your size and space requirements.