Why is it so expensive?

Great question. We overbuilt this coffee maker because we were tired of cheap coffee makers with plastic and flimsy stainless steel. We wanted real wood, cast aluminum, beautiful finishes, and to have it built by hand in Portland. We thought that a coffee maker that had handblown glass throughout would be beautiful and would improve the taste of the end product. The good news is that we were right – it is awesome. Is it expensive? Yes. At $4 for a cup of coffee at a nice cafe, however, the Ratio will pay for itself in about 6 months.

How does it work?

The Ratio uses no pumps or solenoids. Water is heated with a 1,600 watt heating element to boiling in 15-20 seconds. As water heats, it generates pressure. The Ratio harnesses this pressure to send the water up through the inlet tube. This tube runs through the top of the brewer and connects to the brew head. The water is distributed by a Fibonacci shower head to mimic a manual pour-over. In the end, the coffee brews at an optimal temperature that meets SCAA Gold Cup Standards.

Can I return it if I don’t like it?

Absolutely. You have 30 days from receipt of your Ratio machine to try it out. If you decide it’s not for you, we will issue you a full refund. To start the return process, visit ratiocoffee.com/return-warranty.

What is your warranty policy?

We have exceptionally generous (and long) warranty periods. Read more at ratiocoffee.com/warranty.

Is there a hot plate?

No. Adding heat to brewed coffee ruins the flavor within minutes. The Ratio glass carafe is thick, tempered borosilicate glass, and with the lid in place it keeps the coffee hot for about 15 minutes. If you will not be drinking the coffee immediately – please check out the thermal carafe.

Are there any plastic parts?

FDA-grade silicone and a single BPA-free plastic component are used internally. The plastic we have incorporated into the Ratio Eight is medical grade quality. Made of polysulfone, this food-grade quality plastic is FDA certified and a NSF compliant material.

Can I run the glass carafe through the dishwasher?

We do not recommend putting the Ratio glass carafe in the dishwasher. The Ratio carafe is made of tempered borosilicate glass, similar to laboratory glass. After each brew, we recommend rinsing the carafe in warm tap water, using a drop of dish soap if you’d like. You may use the Ratio Machine Wash as frequently as you’d like to remove mineral buildup and coffee stains.

Will you ship overseas and do you have a 220 volt version?

Yes. Our standard voltage is 110V (for US and Canada), but we do produce a 220V for other markets. International shipping is available and the shipping charge will be displayed during checkout. Please note that your country’s importation duties and taxes will be charged to you. To order a 220V version, please send us a note to [email protected]

Can I purchase the Champagne Nickel finish?

We have discontinued this finish due to the difficulty of maintaining a repeatable tone and sheen when there is metallic gold flake in the coating. The Bright Silver finish with walnut trim looks very similar to the original Champagne Nickel finish.

Can I use a Chemex carafe?

The Ratio Eight uses a magnet in the carafe to detect if it is safe to deliver hot water. Other coffee makers use a mechanical button that the carafe pushes against to turn the machine on. The trouble with these mechanical buttons is they tend to wear out over time, and often get stuck in the “on” position. Using a magnet eliminates this moving part. Unfortunately, the Chemex carafe does not have this magnet, so at this time it cannot be used with the Ratio Eight.

What filters do I use?

You have your choice of filter to the Ratio carafe. This can either be a conical paper filter (such as the Chemex paper filter FC-100 or FSU-100; a sample of 4 filters is included with purchase) or a permanent stainless filter like the Able Kone for Ratio. Able designed our branded filter with large batch brewing in mind. Whether you prefer 15 or 40 oz. brews, you can ideally extract the sweetness from your coffee — all without paper waste.

Where do you manufacture the Ratio Eight?

We assemble the Ratio Eight here in Portland, Oregon out of custom parts made for us overseas and here in the Pacific Northwest.