Aga ranges are the heavyweights of the home cooking
appliances. They come in a variety of styles and formats and
may be powered by gas, electricity or solid fuel. They can
also heat water for washing and central heating, though they seldom
produce enough hot water to heat a whole house.
When used correctly, AGA ovens are very efficient. They bake with a narrower temperature variation than fan electric ovens and maintain temperature very well. They also use more energy than other modern ovens, which can make them a little more expensive to run.
The main advantage of these units is their construction. They can be expected to function as new for at least 50 years.
Walker L., 2003, The traditional AGA book of breads and cakes, Absoloute Press. ISBN 1-899791-74-4