Before then, many furnaces released up to 40 percent of their heat outside through the vent! Today, standard furnaces are 80 percent efficient, while those with a rating of 90 percent or more are ...

Electric furnaces can reach this high: They all have efficiency ratings between 95% and 100%. Furnaces that burn oil, gas, or propane must vent exhaust to prevent toxic gasses such as carbon ...

Radiantly versatile – In Cologne, DLR has a unique facility in Germany for irradiation tests with natural and artificial sunlight in the form of the High-Flux Solar Furnace and Solar Simulator. The ...

A PAPER on a high-frequency induction furnace for making alloys was presented by Mr. D. F. Campbell at the autumn meeting of the Iron and Steel Institute held in Birmingham on September 10.

The holiday season is upon us now and that means winter is right on our heels. You may have already experienced some of the ...

Examples include high-efficiency furnaces such as Trane XV95 ... for any warning signs of wear or potential issues with the venting system. For example, this would also be a time to check any ...

he was impressed with many of the features of the Navien NPF Series Hydro-furnace. “The space savings was important, definitely,” Rebellon said. “The efficiency is almost as good as any ...

This is exclusive to gas furnaces, particularly high-efficiency ones. It’s a fan that blows air into the combustion chamber to force exhaust gas out through the vents. Furnaces that burn fuel need an ...

Fall is the time to prepare your home heating system for the winter months, both to extend the efficiency ... cleaning the entire furnace (including the burners and venting to ensure best ...

Roof ventilation prevents excessive heat and moisture from building up in your attic. A ridge vent is installed at the highest point in a roofline for maximum ventilation. Proper ridge vent ...