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 ...

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 concept of the "high-efficiency furnace" in popular consciousness dates back to the 1980s. That's when the National ...

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 ...

So, what is a ridge vent, and how does it benefit you to have one? A ridge vent is a low-profile exhaust vent, typically made of hard plastic or metal, that runs along the peak of a sloped roof.

The general rule is to change a furnace filter, which is usually located behind a return-air vent or in a slot on ... inner coils and reduce the unit’s efficiency. Furnace use impacts how ...

Different models and brands have varying levels of durability and efficiency. Buying the right furnace matters. “Invest in high-quality models such as the Trane XV95, Carrier Infinity 98 or ...

Richard urged homeowners to keep an exterior unit clear of debris since unwanted build-up minimizes air intake and reduces the effectiveness of the furnace. Dual fuel systems for efficiency and ...

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 ...

If you’re considering a new model, read all about heat pumps, furnaces, and other kinds ... are becoming more popular because of their high efficiency and low environmental impact.