Chemex Ottomatic vs Bonavita vs Ratio Eight

Compare what does it do? Chemex Ottomatic vs Bonavita vs Ratio Eight

Chemex Ottomatic, Bonavita, and Ratio Eight are automatic pour over coffee machines that are designed to pre-infuse coffee and allow the grounds to bloom for a better, even-tasting cup of coffee every single time.

Chemex Ottomatic is designed with top of the line features that can be used to brew hot as well as iced coffee. It uses a scientifically designed and patented CHEMEX Bonded Filters and Chemex carafe brewing process to provide a cup of coffee without any sediments or bitter elements.

Bonavita provides the user an optional pre-infusion mode that wets the freshly roasted ground coffee for degassing it before the brewing process takes place. It has a flat-bottomed filter basket and a large showerhead for better distribution, saturation, and extraction.

Ratio Eight boosts of a 1600 W heating element that boils water within 15 to 20 seconds. It uses this pressure instead of any pumps or solenoids to send the water into the inlet tube that connects the water to the brew head where it is distributed by a Fibonacci showerhead to mimic a manual pour-over. The coffee brewed using Ratio Eight is in the optimal range described by SCAA Gold Cup Standards.


Compare Special Features: Chemex Ottomatic vs Bonavita vs Ratio Eight

Chemex Ottomatic – This coffee maker provides great tasting coffee by automatically managing the pre-infusion process and the contact time of water to coffee. Its staged brewing cycle and a pulsing water bath ensure that the water is heated to the Specialty Coffee Industry target temperature of 197.6 to 204.8 degrees Fahrenheit. The Greedy Cup Sprayhead Technology helps in achieving even extraction of coffee throughout the brewing process to provide an optimal flavor. Its Hot Plate is designed to keep the coffee warm without burning or compromising its flavor. It automatically turns off after a 30 minutes cycle to prevent scalding. There is an option of making iced coffee as well in this coffee maker. It takes minimal space and has a small footprint of 11” x 7 ½” x 11 ½”. One can use 5, 6, or 8 cups Chemex coffeemakers with it along with FP-2, FC-100, FS-100, and FSU-100 CHEMEX Bonded Filters.

Bonavita – This machine comes with a one-touch brew operation and an auto-off system. Its flat-bottom filter basket and large showerhead are designed to provide an even distribution, saturation, and extraction of optimal coffee flavor at the desired strength. The 1500 W heater inside this coffee maker ensures that an optimal temperature of 195 to 205 degrees Fahrenheit is maintained and is tested and approved by the Specialty Coffee Association as a part of its Certified Home Brewer System. The optional pre-infusion wets freshly roasted ground coffee for degassing before brewing begins. For easy maintenance, the carafe lid, filter basket, and showerhead of the coffee maker are made dishwasher safe. The sleek body takes 12.4” x 6.8” x 12.2” (L x W x H) space and fits perfectly well on any countertop. This SCA recognized coffee maker has a double-walled tempered see-through glass carafe and removable lid retains the temperature post brewing. Its transparent water tank has markings for convenient filling or views the amount of coffee left inside. The adapter ring on the coffee maker is designed to attach to the Bonavita 8-cup brewer filter basket with ease.

Ratio Eight – The idea behind Ratio Eight coffee maker can brew a 40-ounce carafe or a 16-ounce personal single cup coffee in the machine with ease. After brewing, it required simply rinsing it requires a simple rinsing with hot water and discarding the used paper filter for reuse. This suave coffee maker is meticulously assembled by hand in Portland, Oregon.


Compare Descaling: Chemex Ottomatic vs Bonavita vs Ratio Eight

Chemex Ottomatic – One needs to descale it regularly using a descale solution after every 40 brew cycles or a minimum of every 3 months.

Bonavita – It should be descaled every 6 months.

Ratio Eight – No information available.


Compare Capacity: Chemex Ottomatic vs Bonavita vs Ratio Eight

Chemex Ottomatic – It can brew coffee up to 6 cups.

Bonavita – It can brew 8-cup or 5 ounces of coffee.

Ratio Eight – It can brew a maximum of eight 5 ounce cups of coffee at one single time. It sums up to a total of 1.2 L (40 ounces) of coffee in a full pot.


Compare Material: Chemex Ottomatic vs Bonavita vs Ratio Eight

Chemex Ottomatic – It has a glass carafe with plastic parts in the coffee maker.

Bonavita – It comes with BPA-free plastic material and a glass carafe lined with durable stainless steel material.

Ratio Eight – It comes with a precision die-cast aluminum base and has a premium coatings contrasting with figured hardwood. The tank is made using the BPA-free thermoplastic material for the black model.


Compare Duration: Chemex Ottomatic vs Bonavita vs Ratio Eight

Chemex Ottomatic – The coffee maker has an auto-deactivation system that shuts if after 30 minutes to prevent scalding.

Bonavita – It takes about 6 minutes to brew a pot of coffee and 3 minutes for the filter to completely drain into the pot. Once the brewing is performed, it automatically shuts itself off.

Ratio Eight – It comes with a 7 minute brewing time that includes the 45-second bloom mode.


Compare Temperature Range: Chemex Ottomatic vs Bonavita vs Ratio Eight

Chemex Ottomatic – It ensures that coffee is within the SCA temperature zone of 197.6 to 204.8 degrees Fahrenheit.

Bonavita – It keeps the brewing in an optimal range of 195 to 205 degrees Fahrenheit.

Bonavita brewer with Hot Plate keeps it inside 198 to 205 degrees Fahrenheit range.

Ratio Eight – The heating element ensures that the brewing temperature remains between 192 to 195 degrees Fahrenheit.


Compare Controls: Chemex Ottomatic vs Bonavita vs Ratio Eight

Chemex Ottomatic – This brewer is fully automatic ensures ideal water-to-coffee contact time and uses a water bath to keep the temperature of water in the prescribed range.

Bonavita – It has a one-touch brew operation that shuts itself off after the process is done.

Ratio Eight – There is no information available.


Compare Wattage: Chemex Ottomatic vs Bonavita vs Ratio Eight

Chemex Ottomatic – 1000 Watts

Bonavita – 1500 Watts and 1560 Watts for the Brewer w/Hot Plate

Ratio Eight– 1600 Watts


Compare Price: Chemex Ottomatic vs Bonavita vs Ratio Eight

Chemex Ottomatic – $349.95

Bonavita – $132.62

Ratio Eight– $580


Compare Warranty: Chemex Ottomatic vs Bonavita vs Ratio Eight

Chemex Ottomatic – There is no information available.

Bonavita – 2 Years

Ratio Eight – 10 Years


Compare REVIEWS: Chemex Ottomatic vs Bonavita vs Ratio Eight

Chemex Ottomatic Pros

Chemex Ottomatic is known to be a quick brewing coffee maker that features with easy-to-use controls along with a detailed user manual for user convenience. It has an easy-to-access detachable water tank with measurement markings to provide a correct coffee-to-water ratio. A keep warm setting helps in storing the coffee at an optimal temperature range after the brewing cycle. Chemex Ottomatic automatically removes wastage from the system after each brew. Cleaning wise, this system’s filter holder, glass carafe, and lid can be washed with hot soapy water or the holder and lid can be placed in a dishwasher.


Chemex Ottomatic Cons

It fails to maintain the promised optimal temperature since the coffee didn’t turn out to be hot enough and couldn’t hold its temperature even for two hours. The markings on the tank are difficult to read and it lacks markings on the carafe. The carafe isn’t dishwasher safe for easy cleaning. The coffee maker also lacks an automatic shut-off. It can be difficult to use due to unavailability of an instruction guide and can be problematic during the descaling routine.


Bonavita Pros

This system provides a consistent 195 to 200-degree water from the showerhead to prepare an optimal brew and has a capacity to keep it hot for 3 to 4 hours duration. Bonavita has a bloom feature to wet the grounds before brewing takes place to ensure coffee tastes good and isn’t bitter. With minimal moving parts and a strong built, it is a value for money.


Bonavita Cons

Bonavita is a manual coffee maker and lacks a timer feature. The water reservoir is not detachable and has a narrow lip that makes it difficult to fill water inside it. The coffee maker lacks features such as grinding beans or weighing. The coffee doesn’t stay as hot as promised and if not de-scaled regularly can result in steam emission from the vents above the showerheads. Its 5-ounce capacity might not be suitable for a large family.


Ratio Eight Pros

This coffee maker has a beautiful design and makes an exception cup of coffee. The luxurious design of Ratio Eight with specialty glass, metals, and woods makes it a great coffee maker for minimalistic kitchens.


Ratio Eight Cons

Users have found Ratio Eight to be unreliable for operation due to inaccurate water volume labels. Also, the size and price of the coffee machine are too high. It drips from condensation and spurts water all over the counter while brewing. This isn’t meant for people who require a single cup of coffee since it doesn’t brew till it has 15 ounces of water inside the tank.

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