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Writer's pictureParam Davies

Why does my Bunn coffeemaker overflow?

Surviving a day without a cup of coffee seems rather unusual. With all the stress, workload, and incomplete sleep, coffee is what keeps you going. A fresh brew in the morning or a strong one in the evening, both are equally refreshing.


You must have made your coffee several times, and it must be overflown many times. Have you ever wondered why does that happen? Has the question “why does my Bunn coffeemaker overflow?” never come to you?


Well, even if the question has not come to you, the incident surely must have happened with you. So, here are few ways in which you can avoid that happening in the future. Here are answers to your frequently asked questions about your Bunn coffeemaker.


Why is my Bunn coffeemaker overflowing the grounds basket? The overflowing from the ground basket or better said, grounds, is a problem that most people encounter. There are several reasons as to why this shall be happening.


The primary reason being the outlet is much smaller than the inlet. In this case, the water flows out of the basket more rapidly than it comes in. Due to this, the problem of overflowing arises. By the time the water escapes from beneath the basket, more and more water accumulates in it.


Upon reaching its threshold, having nowhere to go, it escapes from the sides and overflows. You shall regulate and restrict the flow of water for this or can buy a bigger a grounds basket.


Another reason for this to happen can be the coffee itself. The consistency of the coffee makes a difference too. If the coffee is not too excellent, then it gets collected in the filter paper and clogs it. Again, due to the blockage, the grounds basket overflows.



How much coffee and water do you need to put in a Bunn coffeemaker?

Selecting the appropriate amounts of coffee and water in a coffeemaker not only blends a perfect brew but also keeps you from any problems with the coffeemaker or having terrible coffee.

This is the recommended amount of coffee and water that you shall put in the coffeemaker for a refreshing brew.


Fill the pot first with around 4 to 10 cups of water, then pour the water in the machine. After starting the machine, wait for a few minutes till the water gets warm. Then add two tablespoons of coffee for a mild brew and three tablespoons of coffee for a potent brew. You can then nicely enjoy your cup of coffee without any mess to clean or having to drink bad coffee, either.



How do you adjust the water flow in a Bunn coffeemaker? The water flow in any coffeemaker has to be appropriately adjusted, or else things can get out of hand. The water can seep out of the machine and can spill in the surrounding, making it messy.


The water is boiling as well, so if you come in contact with the water directly, there is a chance of you getting burnt. The overflowing water can even make things around the coffeemaker wet; it is not only a mess that you have to clean, but if you do not contain it, it can even lead to a short circuit. Just for overseeing the fat that the water has to be controlled, you might have to face a disaster.


There are several reasons and ways in which you can find a permanent solution to this problem.

The first thing that you need to do is to check the spraying head of the coffeemaker. If it is intact, then it will ensure the proper flow of water into the pot. The spray head of ost coffeemakers are fragile and can be easily damaged. If the head is damaged, then it will not have a proper flow. The water will flow in any direction, causing it to spill and overflow. You need to replace the spray head immediately to avoid trouble further ahead.


The other reason why the water might overflow is the kind of filter paper that you use. The wrong kind of filter paper makes the water to spill. You shall use high-quality filter paper, and it is recommended that you use the filter paper by the company itself as it is best suited for working with the machine.



How do you drain a Bunn coffeemaker? Buying a coffeemaker is not enough if you cannot maintain and clean it. For effective and long term usage of anything, proper maintenance is essential. Draining is an essential part of this maintenance, and this is how you shall do it regularly.


Start with opening the lid at the top of the machine. The machine itself has to be handled with care, so try being a bit gentle while dealing with the device. You shall see a valve arm inside the coffeemaker, remove that arm and flip the machine.


Flipping the machine will make all the contents inside to drain out easily. Please wait for a couple of minutes for it to happen. The cavities inside the machine that takes more time to drain. Once it is done, do clean it as well. Let it dry for a while before using it for another batch of fresh brew.



How to fix this Bunn coffeemaker overflow problem? The overflowing is a common problem in most Bunn coffeemakers. It does not always mean that there is some manufacturing defect in your machine. There are several reasons as to why this shall be happening. The most important thing that you need to see if your Bunn

coffeemaker is overflowing is the adjustment of brew volume.


The coffeemaker can brew only up to a certain extent and volume, which is prespecified. By adjusting the brew volume, you can set it to its maximum capacity. If the brew volume is adjusted any more than its capacity, then it is bound to overflow. So, you should always check the brew volume and set it as per the specified limit to avoid any overflow.


Another reason as to why this shall happen is doe to the surplus coffee already present in the pot. From the previous batch, if there is any coffee left, then even after adjusting the brew volume, it will overflow. So, checking if the pot is empty and emptying it if it is not is crucial, else it shall most certainly overflow.



These were some of the reasons why your Bunn coffeemaker overflows often. Not using the correct filter paper, broken spray head, improper grounds basket, inconsistent coffee, and an inadequate amount of water are a few reasons why the coffeemaker overflows. The solutions to all these problems are rather simple. There is not much that you have to do for fixing them.


All you need to do is take a few efforts, like using high-quality filter paper, adjusting the flow of water, checking the consistency of the coffee, etc. You shall also check the machine regularly, and do your bit to maintain it.




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