The inventor of a personal brewery appliance says the company is aiming to tap into a trillion dollar global market, with the potential to earn $1 billion a year in sales.

Photo: Ian Williams

Ian Williams describes the WilliamsWarn Personal Brewery as the world's first all-in-one brewing appliance designed to make it easy for beer drinkers to become award-winning brewmasters, just like himself.

Mr Williams said it took a decade to move from concept to design and develop a commercial model for the home, and he's selling it for about $7000 a unit.

"We've sold about 700 of them so we have raving fans, guys saying often this is the best thing I've ever bought," he said.

He said it takes about a week to make a fresh brew, and costs just over $9 to produce the equivalent of a dozen bottles of beer.

"We are going for beer drinkers and turning them into homebrewers," he added.

Ian Williams said the company's awaiting approval to enter the United States market, where it has 600 units on backorder.