Halco indoor air humidification offers you expertise in a wide range of long lasting quality electrode humidifiers, resistance humidifiers and gas-fired steam humidifiers. Electrode Humidifiers The world-wide success of Halco's electrode steam humidifiers has been due to its high level of reliability, unparalleled precision, variety of custom features and dual technology capabilities. Resistance Humidifiers The self-contained, wall mounted resistance steam humidifier offers you the choice of spending your maintenance budget on labor time rather than cylinder replacement. Gas-Fired Steam Humidifiers The GF Series of gas-fired steam humidifiers produces clean, sterile atmospheric steam. The GF Series is the most efficient gas humidifier available on the market today with up to 95.9% net efficiency. Contact Us for price & availability on this and other cleanroom products.