Indirect-fired portable heater

June 1, 2011
Topp Portable Air introduces the newest addition to its Safe-Heat Series, the IDF-500 PN indirect-fired portable heater

Topp Portable Air introduces the newest addition to its Safe-Heat Series, the IDF-500 PN indirect-fired portable heater. The original version of the IDF-500 would only run on fuel oil. The new model can run on propane and natural gas, offering customers more options. Models range from 420,000 to 2,000,000 BTU per hour and can be ducted up to 200 feet.