AGA ⚠️ With reservations

An AGA doesn't turn on or off, it's always hot. The cast iron continuously accumulates heat and radiates it evenly. No thermostat, no timer: you cook by instinct, moving dishes between ovens at different temperatures. The opposite of a modern oven.

Gustaf Dalén was chief engineer at AGA, the Swedish company Svenska Aktiebolaget Gasaccumulator. In 1912, he received the Nobel Prize in Physics for his work on automatic lighthouses. That same year, an acetylene explosion in his laboratory left him blind. Confined at home, he watched his wife exhaust herself with the coal stove and decided to solve the problem.

In 1922, blind, he patented the AGA cooker. The principle was radical: a cast iron mass that continuously accumulates heat, two hotplates, two ovens at different temperatures, all in a single unit. No thermostat, no timer. You don't turn it on, you don't turn it off, it's always hot. Cooking is done by instinct, moving dishes between ovens. The opposite of a modern oven.

The cooker arrived in the UK in 1929, manufactured under licence. Cast iron parts were poured at the Coalbrookdale foundry in Shropshire, birthplace of the Industrial Revolution. The AGA became a social marker of English country life, to the point that a literary genre bears its name: the "AGA saga," fiction of the rural upper-middle classes. David Ogilvy, before becoming the father of modern advertising, started his career as an AGA salesman, and his 1935 sales manual is considered a marketing classic.

The problem that has always haunted the AGA: energy consumption. A two-oven gas model uses 425 kWh per week, thirty-eight times more than a standard oven. An enthusiast reports paying £200 per month just to run their AGA. The 2011 Total Control model finally allows switching off between uses, but forums are filled with owners regretting leaving their old continuous-combustion model.

In 2015, Middleby Corporation (Chicago) acquired AGA Rangemaster for £129M. Middleby also owns Viking, La Cornue, Falcon and ILVE. In 2017, the historic Coalbrookdale foundry was closed with the loss of 35 jobs. Manufacturing remains in the UK but in other factories. On specialist forums, a buyer of a modern AGA induction shares a "terrible experience" with Middleby service. The traditional cast iron AGA, always hot, remains the real AGA. Modern models are a different product with the same name.