Natural gas is one of the most economical sources of energy for home heating. That’s why, according to the Natural Gas Supply Association’s naturalgas.org, 62 million homes (56 percent of the ...

It has a positive seal construction techniques resulting in greatly enhanced furnace life, and heating area composed of a well insulated chamber which minimizes the heat loss from the system. The ...

This enables evacuation of volatiles and optimizes atmosphere uniformity. Additionally, Harper’s unique gas curtain technology provides zone-to-zone atmosphere definition under specific conditions.