It also found 70 per cent of the respondents said they had saved a lot of money since refraining from purchasing barista-made coffee.
37 per cent of Aucklanders said they were using their machines daily, and 18 per cent of those were using it more than once a day.
While Otago had the highest consumption of coffee at five cups a day, 28 per cent of coffee-drinkers in Wellington reported having caffeine withdrawal headaches when cutting down.
New Zealanders are also a conscientious bunch, with the survey finding 18 per cent of coffee-drinkers choosing to buy only organic beans and grinds.
Wellington-based Fidel's barista Connor Anderson said it would probably be the cost of having multiple coffees that would entice people to use espresso machines at home, but there was a difference in quality.
"If you're a good barista then the quality of what you're doing is probably going to be slightly higher than what you can get at home"
Mr Anderson was not worried about losing customers, as people still appreciate the cafe experience.
"I think people seem to like coming in to a place and drinking coffee because it's a nice environment," he said.