Furnaces have become more energy-efficient over the years. A gas furnace made in the early 1970s typically has an AFUE of about 65 percent. The lowest efficiency allowed by law for new gas furnaces is 78 percent, and some new models achieve 97 percent--near-total efficiency.The price of a furnace generally rises in step with its fuel efficiency. A furnace with a 90 percent AFUE might cost $1,000 more than a similar size unit with an 80 percent AFUE.eplacing the old furnace in your central heating system with a new, more efficient model can offset volatile energy prices. Money aside, today's furnaces pollute less and boost comfort by producing heat more steadily than older furnaces. Gas is the most common heating fuel and this report focuses on gas furnaces.
Freebase(0.00 / 0 votes)Rate this definition: Bascule. Bascule is the natural round arc a horse's body takes as it goes over a jump. The horse should rise up through its back, stretching its neck forward and down, when it reaches the peak of his jump. Ideally, the withers are the highest point over the fence.
locule, loculus - a small cavity or space within an organ or in a plant or animal. lumen - a cavity or passage in a tubular organ; the lumen of the intestine. socket - a bony hollow into which a structure fits. pulp cavity - the central cavity of a tooth containing the pulp (including the root canal) cranial orbit, eye socket, orbital cavity, orbit - the bony cavity in the skull containing the eyeball. buccal cavity - the cavity between the jaws and the cheeks. antrum - a natural cavity or hollow in a bone.