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 ...

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 ...

The concept of the "high-efficiency furnace" in popular consciousness dates back to the 1980s. That's when the National Appliance Energy Conservation Act of 1987 required all new furnaces be 78 ...

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 ...

While attending a local trade show, 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 ...

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.

I've always said that cleaning your dryer vent twice a year — with the daylight savings time changes — is an easy, and very ...

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.

Solar panel efficiency measures the ability to convert sunlight into energy to power your home. High-efficiency solar panels can convert a higher percentage of sunlight into electricity.

All gas-powered appliances produce trace amounts of carbon monoxide, but properly working pipes and exhaust vents will push ... is a close second for its high efficiency ratings.