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Hottop Home Coffee Roaster KN-8828B-2-K+ - USB Ready with Free 6 lb Green Coffee Sampler

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Hottop Home Coffee Roaster KN-8828B-2K+
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Distributor Stock (Usually Ships Out In 4-7 Business Days)
SKU: KN-8828B-2K+
4.8 stars, based on 5 reviews

Home roasters rejoice! The Hottop KN-8828B-2K+ is here and has raised the bar for quality home roasting. The 2K+ now offers users even more control than its predecessor, the KN-8828P-2K, allowing total roast time, target roasting temperature, fan speed, and heating power to be controlled manually - even in the middle of a roast. The possibilities presented through these variables are virtually endless, which means users can make fine adjustments to hone in on the ideal parameters. The 2K+ features two K thermocouples and real-time monitoring over both bean temperature and environmental temperature. Both temperatures, along with all other roasting data, are displayed on a new high contrast LED screen throughout the roast cycle . A bi-directional USB port supports third party software for real-time monitoring and graphing of roasts as well as computer control of the roaster (software can be found here).


  • Dynamic roasting control - manipulate target time, target temperature, fan speed, and heater power at any time during the roast.
  • Advanced LED screen with wide viewing angle, high contrast, and full roast data displayed in real time
  • Three push buttons for starting and stopping roasts and approving changes, Four bi-directional, infinite-rotation speed-sensitive knobs for easy and fast parameter changes during the roast (fan speed, temperature control, target temperature, and target time).
  • Two K-type thermocouples for separate bean temperature (BT) and environmental temperature (ET) for real-time monitoring. Both temperatures are displayed on the LED screen throughout the roast.
  • Bi-directional USB port supports third party software for real-time monitoring and graphing of roasts as well as for computer control of the roaster


  • Save roasts to memory for recall
  • Capacity: up to 300 grams per batch (best results with 250 grams)
  • External cooling tray with agitation arm and fan; beans cool in 4-5 minutes
  • Auto Roast Mode with factory installed profile
  • 3 available memory locations for storing complete profiles
  • 25 minute maximum roast time
  • 3 Eject Modes: Auto, Push-button,and Manual
  • Manual ejection pin for safety
  • Roast times range approximately 12-16 minutes depending on mass of beans, roast level desired
  • 1 year manufacturer’s warranty
Manufacturer: Hottop
Model: KN-8828B-2K+
Width: 10"
Depth: 19"
Height: 14"
Voltage: 110
Weight: 20 lbs.


Hottop Coffee Roasters incorporate commercial grade features into a home roasters. Unlike many home roasters, Hottops allow the roaster to monitor the entire roasting process. This includes being able to see the beans, as well as control the heating element and the fan (on the basic model). The Hottop design is advanced enough to allow a skilled roaster to determine optimal parameters, but it is also simple enough to enable newcomers to produce evenly roasted, fresh coffee with a fantastic flavor. Built with quality materials, including the one-of-a-kind cooling tray that works to cool the beans in under four minutes, the Hottop Coffee Roaster is able to produce roasted coffee on par with any coffee you could purchase at the store. With green coffee bean selling for half the price of roasted beans, the Hottop is an investment that will pay you back in the long run.

Verified Buyer


5 / 5 stars

Hottop KN-8828B-2K+ is a great little roaster

The Hottop KN-8828B-2K+ is a great little roaster. I have made 10+ roasts in the last few weeks on this and each one gets better. The ability to utilize the Artisan software and track the roast is invaluable. I can analyze where the roast went wrong and make the correction the next time around. I have not made a thruway batch yet and I have 9 tasters that have been mostly satisfied. If you are looking for a jump off point to roasting your own coffee, you cant go wrong with the Hottop KN-8828B-2K+.

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Verified Buyer


5 / 5 stars

Amazing Roaster

I did a lot of reading prior to ordering the Hottop and I'm glad in the end I chose it. It's a really well built product that allows for excellent repeatability and control. The fact that it can be connected to Artisan was a very welcome feature. The setup was absolutely painless. I absolutely love the roaster and the Prima Coffee customer service. Buy with confidence, you won't regret it.

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Verified Buyer


5 / 5 stars

Hottop Home Coffee Roaster KN-8828B-2-K+

The very best coffee roaster I have ever owned. The Hottop is now my 3rd roaster in 10 years of roasting my own coffee. I have only owned it for 4 days and I have done three roastings on it. Each time I'm so impressed with the quietness, so to hear the first and second crack. By the time the coffee is ejected, I hardly see any chaffs as in previous coffee roasters where I would have to strain the chaffs for a while. The beans are very evenly roasted. I have downloaded the program to connect the roasters to my computer. I will start to use and write another review on how that goes. But for now, I'm really happy with the performance of this machine.

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Verified Buyer


5 / 5 stars

First order from Prima

I've never had an order from anyone processed and shipped so quickly... very excellent!!! I'm so glad I found your web site. Very happy with my purchases.

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Verified Buyer


4 / 5 stars

Great for what it is with a few quirks

For the price and features list, there's not much to complain about. Only quibble would be that the chaff collection isn't in an area that makes much sense (DIRECTLY below the drum) and running a full 250g load will often create enough chaff to actually catch in on fire or smolder with a single batch. It also doesn't fill the chaff collector tray but tends to pool towards the back (where it's hottest). Drop in temps are lower than expected BUT considering its size, that's not too surprising now that I think about it since it's so small it takes a very little to heat up. Roasts can take longer than a usual full sized roaster is (the default "auto" mode roast is 18 minutes long (it's most often just past second crack)). BUT it's still a GREAT little roaster with LOADS of controls you wouldn't expect at this price point. Add the ability to interface with artisan and use the profile curves as a starting point/ guide for larger batches on a full sized roaster and it's a handy little thing that saves a LOAD of money in the long run by allowing smaller sample batches!

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