Bunn GR10 Coffee Brewer

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Overview

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Essential Info:                                                             
With its all-plastic housing, the Bunn GR10 is more than just Bunn-lite. Like the other Bunn machines, the GR10 features a pour over system that keeps water heated to the proper brew temperature at all times. Pouring water into the reservoir forces the preheated water out, allowing for an extremely short brewing time of 3 minutes. By not adding ground coffee, you have the availability to use the hot water for tea or hot chocolate. The only thing setting the GR10 apart from the other Bunn models is its glossy all-plastic housing, available in white or black.

Controls:                                                                      
The Bunn GR10 is very easy to operate once you read a few simple instructions. The key to control is in the set up before brewing the first pot. The first pot primes the machine for all subsequent use. It’s important to follow the sequence of steps for filling the 75-ounce reservoir and for plugging in the machine. The first pot takes up to 15 minutes to brew, but once you’ve done this, the machine brews in 3 minutes. It is plugged in at all times, keeping water at the proper brew temperature. If you’re not going to use the coffee maker for more than 3 days, there is a “vacation” rocker switch that turns off the electrical components of the machine. Resuming power will require the initial 15-minute heat up time before brewing again.

A small post sticks out of the reservoir grate and controls the start of brewing. When the lid of the reservoir is closed it depresses this post, allowing that water to flow into the boiler and forcing the hot water out through the coffee filter. For this reason, you should have the carafe sitting on the warmer plate before closing the reservoir lid. This displacement brewing method also makes it possible to brew as few as 20 ounces of coffee by merely adjusting the amounts of ground coffee and water you put into the machine. The on/off switch for the hot plate is the only control button on the front of the machine.

Performance:                                                              
With the Bunn GR10, the only trade off is a plastic housing instead of stainless steel; you still retain a coffee maker that is well above average in performance. Once you are set up and have completed the initial 15-minute warm up period, the Bunn GR10 brews very quickly. It is a happy marriage of commercial speed and efficiency with home use in mind. This machine is especially useful if you want to brew pot after pot of coffee over a period of hours. The amounts of coffee and water that you use control the strength of the coffee.

Construction:                                                               
The workhorse capabilities of the Bunn GR10 may surprise you. Its size and relatively conventional shape do not convey its superior speed and efficiency in brewing a pot of coffee. The polished plastic housing of this model reduces the industrial feel that the other Bunn machines can convey.

Carafe:                                                                        
The Bunn GR10’s carafe is made of glass and holds 50 oz. It is clearly marked with fluid level indicator lines and has an easy to grip plastic handle. The carafe’s spout is virtually spill free.

Boiler:                                                                         
Once primed, the Bunn GR10 is always ready to go. The Bunn GR10 has an 800-watt stainless steel tank heater. The first time you use the GR10, the boiler will take up to 15 minutes to heat. After that first use, the boiler maintains the proper temperature and brews coffee in 3 minutes. The 15-minute heat up time will be necessary after taking the machine off of the vacation setting, but not on a day-to-day basis.

Hot Plate:                                                                    
The warming plate is porcelain coated and scratch resistant. It is easy to clean. The on/off switch for the warming plate is located on the top front of the machine.

Reservoir:                                                                    
The reservoir of the Bunn GR10 serves as a readying mechanism for the machine. The coffee maker employs an indicator in the lid to start the brewing cycle. If you open the lid during brewing, you will interrupt the flow cycle, but not the brewing. This flip up lid covers the reservoir, which sits at the front of the machine, making it very easy to fill. You can pour straight in and will not have to turn or twist your arm as you do when pouring into some reservoirs located at the back or sides of coffee makers. Once the lid is closed, water relocates to the boiler, moving the heated water out through the coffee filter.

Water Filtration:                                                          
The Bunn GR10 does not have a water filtration system. It is, however, recommended to use filtered water in order to keep the internal portions of the machine clean as well as improving coffee flavor.

Coffee Filter:                                                               
The Bunn GR10 uses a fluted paper filter. This filter can be re-ordered through Bunn or on our Accessories page.

Accessories/Re-order:                                                 
One of the more interesting accessories is a special tool for de-liming: a long, flexible metal rod that is inserted into the sprayhead. The rod looks like an 8 to 10 inch tight metal spring. It may take some time to become accustomed to using this tool, as it is unique among drip coffee makers. There are simple instructions to disassemble the sprayhead and insert the rod. Additional instructions are provided to assist in cleaning smaller parts of the sprayhead, along with 20 fluted paper filters and a calendar to keep track of regular cleanings. Filter re-ordering instructions are included as well.

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