Question about Bunn NHB Coffee Maker

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Grounds overflowing When brewing a pot of coffee, the grounds in the filter come up and over the top of the basket, getting into the coffee in the carafe. I thought making a smaller pot of coffee, using less grounds would help, but it still does it. What's causing this? It did not use to do this.

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  • PCBusby Feb 12, 2008

    I do not use a metal basket, but normal paper filters I purchased at the grocery store. I have just ordered the Bunn brand of filters in hopes that will solve this problem. I read that they are taller than those sold at the stores. It almost seems the water fills up the filter with the ground coffee faster than it drains into the carafe; therefore, spilling over and under the filter and through the hole into the carafe.

  • Anonymous Mar 13, 2008

    I have the same problem. The filter basket fills faster than the coffee runs out. It makes a huge mess! Coffee and grounds all over! I like to grind the coffee myself. I tried pre ground coffee. I tried using less coffee. I also use Dunkin Donuts brand and I like to make it how they suggest. I'm guessing that I'm using the wrong filters. They say they will work for Bunn. I paid alot of money for this coffee pot. Not to mention the coffee is almost nine dollars a pound, my time and the roll of paper towels it takes to clean the mess. Any suggestions would be wonderful!! Thank you in advance.

  • Anonymous Jun 03, 2008

    I too have this same problem, as well as my sister & our mother. (three seperate Bunn Coffee Makers) We all are baffled on what to do. My sister has only had hers for around two months & her problem is a great deal worse than mine. She had a huge HS graduation party over the week-end & as she was rushing around to attend to her many guests after preparing the coffee, the filter overflowed with coffee & grounds EVERYWHERE. Last week she followed the directions on cleaning the pot, using the wire tool, using vinegar, unscrewing the round knob the coffee flows from & using a toothpick to be sure all the tiny holes were cleaned. I sure hope the Bunn company reads these comments. What is the problem? Help! We all have had other Bunn makers over the years & none of us have ever had this problem. Is it just the newer models?

  • Anonymous Oct 25, 2008

    I have the same problem and we used the filters that came with our coffee maker...My husband is ready to throw out this coffee maker...if someone from Bunn hasn't read your comments that have been posted from February do you really think they care???

  • joycerogers Nov 13, 2008


  • mariankotas Mar 21, 2009

    I received a Bunn coffemaker and there was no booklet with it--the box had been damaged so I thought I could just fill it with water and put in a filter with coffeegrounds and turn it on. The water got hot but no coffee came out--what else can I do?



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Iam useing the right filter.

Posted on Nov 13, 2008

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Having owned Bunns for years, we know (and still have) that they used to sell the units with a second, plastic decanter. You got your coffee even faster! I assume to save money, they did away with that 2nd decanter and you must use the same glass one. They added that plunger under the lid to hold back the water until you get the glass in place. (For 30 years, we never had this overflow problem). I used and ice cream stick between the lid hinge to hold the plunger down permanently. Stopped the problem. As in the old days, the water starts flowing instantly as you add water in the top.

If you don't have a second decanter, I would try breaking off a toothpick in the holes of the flow restirctor (located under the top where the basket goes). I would plug one hole at a time until I got the flow synced with the basket capacity.

Posted on Mar 23, 2009

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I have solved it by raising the lid when two cups are in the pot until five cups are in the pot. Then close the lid. The real solution is to use the Bunn Brand filters if they are the same as the ones that came with the pot. I cannot find them at local stores. The filters that came with the pot seam to be an inbetween size.

Posted on Nov 01, 2008

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If you use less grounded coffee and still does it the water go trus no problem the trouble is dirty filter if its metal one or were the coffee exit just before going in the carafe let me know thanks for using fixya pierre

Posted on Feb 11, 2008

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