Standard-efficiency gas furnaces convert at least 80 percent of gas energy into heat delivered to your home, while today’s ...

Most homes use a forced-air furnace system to provide heat during the colder months. These furnaces burn fuel, such as gas or oil ... more to install than a standard model, you’d recoup that ...

Gas and oil furnaces burn fuel to provide heat for ... Some major manufacturers, including American Standard and Bryant, ...

The annexed engravings are views of Sef-Feeding Machinery for Furnaces, by MonsMoufarine, an engineer of Paris, and a de-scription of which first appeared in the on-don Artizan." In the instance ...

Up to 1709, furnaces could only use charcoal to produce iron. However, wood (which is what charcoal is made from) was becoming more expensive, as forests were being cleared for farmland and timber.

In Vol. VI!., SCIENTIFIC AMERICAN, we published a series of articies illustrated with engravings of almost every kind of steam boiler and furnace. To go over the same ground again would be a work ...

The three main types of furnaces are electric, natural gas and oil. Like with air conditioning systems, a furnace’s size is measured in British thermal units, or BTUs. The number of BTUs ...

you may only run your furnace a handful of times during winter, and the standard 90-day guideline might be perfect for you. Northern dwellers whose furnaces don’t get a break for months ...

American Standard’s walk-in bathtub selection includes a variety of soaker and jetted tubs, including water and air jets. All models include quick-drain technology, and certain models come with ...

American Standard Bathroom Remodeling offers remodeling services that can be completed in as little as one day. It specializes in shower and tub replacement and tub-to-shower conversions.

Tata Steel has signed a contract to bring the latest green steelmaking technology to south Wales, less than a month after closing both its blast furnaces. Metals and mining solution company ...

The electric arc furnace will reduce the Port Talbot site’s steelmaking carbon emissions by 90%, equivalent to five million tonnes of CO2 a year. The electric arc furnace is replacing ...