But McNitt says HUDS is confident the switch will allow it to offer fresher, more tasty coffee.
"Peet's is absolute fanatical [about the freshness of its coffee]," she says. "They won't let us buy large quantities. They want us to purchase little quantities and receive shipments more often, so that the coffee is always fresh."
In fact, she says Peet's recommends that its coffee be sold between two and 14 days after roasting. By receiving shipments every week, the Greenhouse coffee will "fall within that window period," McNitt says.
Will the extra freshness and strength be enough to satisfy customers who have grown used to Seattle's Best over the past few years?
McNitt says once the 90-day trial period ends, HUDS will assess the brand's sales and customer satisfaction and then decide whether to make the switch a permanent one.
The word is still out on the new coffee.
"People either really like it or really dislike it," says the Greenhouse's Hillman.