Ratio Eight FAQs

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.

Will you have a thermal carafe?

Yes. We are in final production stages of our Thermal Carafe that will retain heat for up to 4 hours. The Eight can be used with the glass or thermal carafe interchangeably. Pricing and availability will be announced soon.

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 cork base can break down and start to chip or peel away from the hot water and detergent. 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. You can order with 110V (default for US and Canada) or select 220V for other markets. International shipping in available and the shipping charge will be displayed during checkout.

Can I use a Chemex carafe?


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) or a permanent stainless filter like the Able Kone for Ratio.

Where do you manufacture the Ratio Eight?

We design and build the Ratio Eight here in Portland, Oregon out of custom parts made for us in Taiwan and China. We regularly visit each of our factories in person to ensure an exceptional level of quality in every aspect of the operation.