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Top 5 Best Coffee Makers For Hard Water – Reviews 2023

The best coffee maker for hard water helps you enjoy a great fresh cup of coffee without any strange taste due to the minerals or limestone in the hard water.

To help you get the best option for your preference and demand, we have compiled a list of top products in detail, along with other helpful information.

Which, our winner is the CHULUX Single Serve Coffee Maker for its design and capability in giving your coffee a complete aroma even when you live in an area with hard water.

Table of Contents

The 5 Best Coffee Makers For Hard Water 2023

Let’s dive into the features of the five best coffee makers for hard water to know what is right for you.

1. CHULUX Single Serve Coffee Maker – Best Overall


CHULUX Single Serve Coffee Maker Brewer for Single Cup Capsule with 12 Ounce Reservoir,Black

as of December 1, 2023 3:17 pm


  • Material: Plastic housing + stainless steel inside the water tank
  • Color: Black, Blue, Cyan, Gray, Green, Orange, Red
  • Capacity: 12 oz
  • Item weight: 2.2 lbs
  • Dimension: 7.4 x 4.3 x 9.06 inches

We will start with our winner – the CHULUX Single Serve Coffee Maker. It stands out among other competitors for its excellence in every aspect.

First, it comes with a flexible design, adapting coffee grounds or coffee pods to prepare a flavorful cup of coffee. It boasts an easy-to-use single-on/off function, so you will not spend much time trying to install it.

As its name suggests, it is a compact coffee maker serving only a cup of coffee, ideal for single persons, couples, or small families of 2-3 people. You will love this option as you can take away its drip tray to clean easily or extend the space to fit a bigger coffee cup. 

The machine’s tank is also easy to fill without any mess to maintain your countertop clean. Thanks to a removable filter, the grounds can be kept away from your coffee, and it is quite easy to clean.

Plus, hard water will not be an issue with this coffee machine as it comes with a single-button cleaning mechanism to handle limestone buildup and ensure your coffee will taste fresh. 

You will also not worry about the safety of this machine as it is made of BPA-free and food-grade materials. 

Regarding the brew temperature, this suggestion features an 800W heating element with fast brewing technology so that you can get the hot steam for your coffee rapidly. This affordable coffee machine can get your coffee ready within only three minutes.

That said, you have to measure the level of water you add inside as it does not have a translucent window.

What we like:

  • Flexible design for both ground coffee and coffee pods use
  • Single on/off function
  • Removable filter to keep away from the grounds
  • BPA-free and food-grade materials
  • 800W heating element
  • Affordable

What we don’t like:

  • No translucent window

2. Mr. Coffee 10 Cup Coffee Maker – Best For Speed


Mr. Coffee Coffee Maker, Programmable Coffee Machine with Auto Pause, 10 Cups, Stainless Steel

as of December 1, 2023 3:17 pm


  • Material: Stainless Steel
  • Color: Black/Chrome
  • Capacity: 50 oz 
  • Item Weight: 5.1 lbs
  • Dimension: 8.7 x 13.11 x 14.33 inches

Our runner-up is the best coffee maker for hard water when it comes to brewing speed. The Mr. Coffee 10 Cup Coffee Maker can brew up to 20% quicker. 

The included carafe and water tank can make up to 10 cups without refilling. And the best part is that it only takes you nearly 7 minutes for a full carafe.

For those who are a fan of hot coffee, this option might be your ideal product because it keeps the interval process at a hotter brewing temperature of 205℉ for a more aromatic taste. Plus, it comes with a brewed thermal carafe to keep your coffee hot and hold its fresh flavor. 

What also impresses us is its permanent Gold Tone filter to remove up to 97% of chlorine and other minerals from hard water for better taste while cutting down paper filter costs and waste.

On top of that, you can set brew time so you can have a freshly brewed cup of coffee right when you wake up every morning. Not many products can offer this functionality. You will also find it easy to fill water as this machine’s water reservoir is detachable.

However, it is not an ideal option for modest counter spaces as it is quite bigger than a conventional coffee machine.

What we like:

  • Fast brewing process 
  • Keep the coffee hot for a while
  • Great filtration system to remove up to 97% of chlorine and other minerals
  • Available to set brew time mode
  • Detachable reservoir for ease of use and fill

What we don’t like:

  • Not for tight counter areas

3. Hamilton Beach FlexBrew Coffee Maker – Best For Flexibility


Hamilton Beach FlexBrew Trio 2-Way Coffee Maker, Compatible with K-Cup Pods or Grounds, Single Serve & Full 12c Pot, Permanent Gold-Tone Filter, Black & Silver

as of December 1, 2023 3:17 pm


  • Material: Glass, plastic
  • Color: Black and silver
  • Capacity: 96 oz
  • Weight: 13 lbs
  • Dimension: 13.66 x 11.42 x 12.24 inches

The Hamilton Beach FlexBrew Coffee Maker stands out for its brewing flexibility. Accordingly, there are two brewing methods to meet every type of coffee and quantity, making it a perfect choice for a family with many coffee drinkers.

While its single brewing side allows you to brew into a cup or 8-inch-tall travel mugs, you can also brew up to 14 oz with your preferred coffee or 10 oz with a K-Cup pod.

Besides, this machine comes with two easy-to-fill reservoirs with easy-view water windows so that you can easily control the amount of water you add inside the tank.

We also like its programmability to set brewing time up a day in advance to fit your schedule. You will find it easy to take away the carafe and pour a cup during the ongoing brewing process with no dripping, thanks to the machine’s auto-pause & serve mechanism.

There is also a Gold Tone permanent filter to keep staining at a minimum level and lower the use of paper filters. 

On the downside, its lid feels slightly flimsy, affecting the ability to keep your coffee’s temperature.

What we like:

  • Two brewing methods to meet every type of coffee and quantity
  • Easy-to-fill reservoirs with translucent water windows
  • Brew time programmability
  • Auto pause & serve mechanism
  • Permanent filter to keep staining at a minimum level

What we don’t like:

  • Slightly flimsy lid

4. Cuisinart DCC-1150BKP1 Classic Coffeemaker – Best For Filter


Cuisinart Programmable Coffeemaker Coffemaker, 10-Cup, Black

as of December 1, 2023 3:17 pm


  • Material: Stainless Steel
  • Color: Black
  • Capacity: 50 oz
  • Weight: 16 lbs
  • Dimension: 8.07 x 10.23 x 14.17 inches

The Cuisinart DCC-1150BKP1 Coffee Maker wins our hearts for its exceptional filter with charcoal and permanent gold tone. This filter can significantly remove the residues in hard water and deliver the best water for you to make the freshest coffee flavors. 

You might not know this, but charcoal is the perfect water filter as it can remove toxins, a common contaminant in hard water. Not only does this machine deliver clean water for a fresh coffee cup, but it also protects your health from harsh chemicals.

Another plus point is that it features a 100% automatic 24-hour programmability so that you can set brew time for a cup of coffee at the time you want. 

If you are a busy resident, you can’t go wrong with this pick. Just some presses to set the time, and the machine will take care of the rest.

Moreover, you can serve well for multiple coffee drinkers with this fully automatic double-wall insulated thermal carafe machine due to a 1-to-4 cup setting. This pick is best used for vast serving such as offices, conferences, or buffets.

However, it might cost you a small fortune as its price is quite higher than most other products.

What we like:

  • Unique filter with charcoal and permanent gold-tone
  • 100% automatic 24-hour programmability
  • 60-second reset mode
  • Brew-pause technology
  • Compact design for tight spaces

What we don’t like:

  • Higher price than other products

5. Cuisinart DCC-2650 Brew Central Coffeemaker – Runner-Up For Speed


Cuisinart DCC-2650P1 Extreme Brew 12-Cup Programmable Coffeemaker, Black/Stainless Steel

as of December 1, 2023 3:17 pm


  • Material: Stainless Steel
  • Color: Silver
  • Capacity: 50 oz
  • Weight: 9 lbs
  • Dimension: 9.5 x 11 x 16.25 inches

We cannot forget to mention the DCC-2650 Brew Coffee Maker, also from Cuisinart. This suggestion is another option for those who seek a high-speed coffee machine.

Thanks to its re-engineered brewing tech, the machine can deliver a fresh cup of coffee up to 25% faster than other products, even the Mr. Coffee 10 Cup Coffee Maker. 

This model is the coffee maker for people who are impatient when it comes to waiting for their coffee. It only takes about 9 minutes to bring you a full 12-cup carafe.

But we rank it in this position instead of the second spot because it cannot provide a fresh, tasteful coffee like the Mr. Coffee machine. Moreover, its price is much higher than that of the former. 

The Cuisinart Extreme machine performs well in the ability to filter toxins and other residues in the water for its charcoal filter. Those living in cities with hard water can rest assured that this coffee maker brings you the purest and fullest flavor. 

It also lets you enjoy your coffee in the middle of the brewing process due to its brew-pause technology. Like the DCC-1150BKP1, this suggestion also comes with 100% automatic 24-hour programmability and a 60-second reset mode. 

Still, this machine maker is quite pricey within its range.

What we like:

  • 25% faster brewing process thanks to re-engineered brewing tech
  • Unique filter with charcoal and permanent gold-tone
  • Brew-pause technology
  • 100% automatic 24-hour programmability
  • 60-second reset mode

What we don’t like:

  • Pricey within its range

What Are The Types Of Coffee Makers?

1. Traditional Coffee Makers

The most common kind of coffee maker is an automatic drip coffee maker. It is available in different qualities, prices, and shapes. The best thing about it is its ease of use.

All you need to do is to load your desired coffee material and start. If you aren’t aware of this kind, look at your working places or organizations. You might find this popular type there.

Another great benefit of this coffee machine is it is quite affordable for everyone. You can get various options with diverse designs and colors. If you are a traditional coffee lover, we recommend keeping it just for a basic taste.

2. One-Cup Coffee Makers

Another common type of coffee maker is the sing-serving coffee maker. These machines can prevent coffee from spilling, and they do not create any mess with their filters.

This type of coffee maker is perfect for single people, couples, or small families of 2-3 members. But mass serving for offices or conferences may take quite some time. 

The one-cup coffee machine’s price range varies on its features and even its brand recognition.

3. Espresso Coffee Makers

Espresso is among the best coffee machines out there. They are known as top-of-line products. There are a variety of espresso options for you to choose from.

They mainly make shots and high-quality coffee short cups for a flavorful and strong coffee taste. Espresso is also a modern and attractive kitchen appliance, offering a full coffee bouquet at homes or coffee shops.

How To Choose The Right Coffee Machine For Hard Water?

Purchasing the right coffee maker is a one-time investment. So to make your buy worth money, here are some key elements to keep in mind when considering the best coffee maker for hard water.

Brew Temperature

Everyone prefers a steaming hot coffee cup. So ensure that your machine comes with a standard heating system. Hot water can deliver the right bean-to-cup coffee flavor. In addition, some models have a cold brew mode for perfect cold coffee in hot weather.


If you are frequently busy, this feature is right for you. With it, you can get a freshly-brewed coffee cup every morning without waiting for it to heat up and start brewing.


Another must-have feature to look for in your coffee maker for hard water is the filtration system. It will help trap chlorine and minerals to deliver the best taste for your coffee.

Glass Or Thermal Carafe

The glass carafe looks great and boosts the coffee maker’s aesthetics. It utilizes a hot plate to maintain the warmth of your coffee. 

Meanwhile, the thermal type is durable and can keep your coffee warm for hours without destroying its taste and needing any hot plate.


We suggest purchasing a coffee maker from a prestigious brand, such as CHULUX, Mr. Coffee, or Hamilton. Ensure it comes with an above one-year warranty. Thus, you can get the necessary help whenever any issue happens.


Like any product, when buying a coffee maker, you often consider its affordability. There are a lot of expensive products out there coming with extra features. But those pricey machines may exceed your demand. It is best to choose a machine that can fit your basic coffee desires.

How To Make Any Coffee Machine Hard Water Compatible?

A cup of coffee contains 98% of water, and it is no doubt that this element is the key factor determining a high-quality coffee cup.

However, it is, at the same time, the most annoying as it is just water. Who minds? That said, hard water can effortlessly ruin your homemade coffee, making it taste different from the cafe shop. To help you out with this issue, here are two important things.

Filter Water

If the tap water tastes bad, it will ruin your coffee. Most coffee shops use a filtration system to get better water, and you can do it too. Below are two things you can consider

Purchase A Water Filter

A few coffee makers have a water filter, but it will limit the brewing methods. A much easier way is to purchase a water filter jug. 

It does not clarify your water yet removes lots of chlorine and other unpleasant tastes from the tap water.

Bottled Water

Well, this way is not our top recommendation to get better coffee water. In fact, it works very well, but it is so wasteful, and you have to throw a bunch of plastic bottles daily, not good for our environment.

We don’t think it is worth compromising our lovely Earth for good cups of coffee.

Descale The Coffee Machine

If you live in a place with hard water, you have to do this step. There is no other method rather than descaling your coffee machine. But how often and how thoroughly will you need to do it? Keep scrolling down for more details.

How Often Do You Need To Descale Your Coffee Machine?

It varies by how hard your water is and the device you use. You can look at a map showing the components of water in your area. Or you can know whether you live in a location with hard water as people talk.

If your living area has serious hard water, it is advisable to monthly descale your coffee machine. However, the frequency of descale a coffee maker also depends on yours. 

Below is our recommendation for our suggested coffee makers (but once again, it is best to descale it monthly if possible).

Product Suggested Frequency
CHULUX Single Serve Coffee Maker Every 600 cups
Mr. Coffee 10 Cup Coffee Maker  Monthly
Hamilton Beach FlexBrew Coffee Maker Monthly
Cuisinart DCC-1150BKP1 Twice a year
Cuisinart DCC-2650 Twice a year

How To Descale A Coffee Maker?

Like what we said above, it is advisable to descale coffee makers monthly if you reside in a very hard water region. So the question is how to descale it?

Well, you will need to run brew cycles with a cleaning solution and water. The liquid will break down limescale and miner deposits to wash out of the coffee maker.

In the middle of the process, you should stop the cycle halfway and let the solution sit in it for an hour to dissolve all residues. Descaling solution is available in two types, including commercial descaling solution and white vinegar. 

While the white vinegar’s acidic properties make it suitable for removing and dissolving limescale and mineral buildup, the commercial cleaning solution is more powerful and odorless (for at least it claims to be).

It is up to you to choose which type you use. Both can work great. For us, we do not see any reason not to use vinegar; it is much more affordable.

But if the coffee maker is in bad shape, it is better to use a commercial cleaning solution. We found that this solution can work faster than vinegar. But for a regular cleaning routine, white vinegar is okay.

A Step-By-Step Guide To Descale A Coffee Maker

  • Step 1: Remove the carafe and basket and wash them with soapy water. Then rinse with water and dry. Next, clean the coffee maker outside with a damp fabric. 

Should you have coffee stains or limescale unavailable to remove with soapy water, try using vinegar. You should do this step every week. A clean coffee machine will make better coffee as there’s no contamination of stale water or old coffee.

  • Step 2: What you need to do next is to add water with your cleaning solution to the tank. For example, if you use white vinegar, remember the ratio of 1:1 between water and vinegar. 

If you use a descaling solution, it is best to follow the guidelines of the product.

  • Step 3: Turn on your coffee maker to initiate the brew cycle. When the tank is around half empty, immediately shut down the maker. Let the cleaning solution stay in it for an hour. You can turn it back on and finish the cycle then.
  • Step 4: After the first cycle, discard the solution. Then rinse the carafe and fill it with cold water, followed by adding it to the tank and running a complete brew cycle. For the best result, repeat this procedure about 3-4 times to wick away all sediments or smells.

How Does Hard Water Harm A Coffee Maker?

Hard water can generate limescale buildup affecting your coffee taste and leading to irreversible damage to the machine if it isn’t cleaned frequently and adequately. That said, using hard water in the coffee differently affects different coffee maker types.

1. Traditional Coffee Machines

They are probably the toughest type when utilized with hard water. However, even the most trustworthy coffee maker can be affected by stains and limescale residues if it’s not cleaned thoroughly. 

Traditional coffee machines are easy to descale, yet effort and time are a part of the equation. Nevertheless, they can work effectively for various years with care.

2. Espresso Coffee Makers

They work best with filtered or bottled water. These coffee makers are susceptible to limescale and mineral debris. It is recommended not to use hard water with espresso machines. 

Instead, a filtration system will help extend your coffee maker’s lifespan.

3. One-cup Coffee Machines

Hard water is not good for one-cup coffee machines as the limescale can lower their durability and efficiency. Bottled or filtered water is better for these kinds of machines. 

If you utilize hard water in a one-cup coffee machine, ensure it’s designed to deal with limescale and carefully follow its cleaning instructions. Otherwise, your machine can have a shorter lifespan than you expect.

FAQs Of The Best Coffee Maker For Hard Water 2023

1. Can hard water ruin a coffee machine?

Yes, it can. Hard water can damage your coffee machine by causing limestone buildup within the maker that requires frequent cleaning.

2. Can I add soft water to my coffee machine?

Certainly! We live in areas with soft water and don’t have any issues using it to make a cup of coffee. We think it is much easier to get great coffee with this water. 

Yet, the same issues can appear if you get too soft water. You will need to tweak it to your preferred taste as you make it.

3. What happens if you do not descale a coffee maker?

Mineral build-up can negatively impact your coffee maker’s boiler, affecting the taste of your coffee in several ways: 

  • If the water cannot reach the optimal brewing temperature, it’s impossible to extract a full flavor from the coffee beans.
  • Your coffee will not be hot enough to enjoy.
  • Limescale buildup can clog the flow of water. If not removed, it can make your coffee maker stop working.

4. Is a descaling solution better than white vinegar?

Their descaling processes are the same. But vinegar appears to be readily available to use and more budget-friendly than a descaling solution. Meanwhile, a descaling solution is formulated for better cleaning coffee pots and keeping the coffee machine running reliably.

5. How many times should you run white vinegar through a coffee maker?

It is advisable to run the brew cycle from the above three times. The water needs to be poured out after each brew cycle and refilling. Wait for your machine to cool down for 3-5 minutes between the brew cycles. 

You can consider doing further 1-2 brew cycles with water if you still smell the vinegar.

6. Can you use smart water for coffee?

Yes, you can use smart water for coffee. Smart water is filtered and has a neutral pH, so it will not affect the taste of your coffee. In fact, using filtered water may even improve the taste of your coffee.

However, if you have hard water, we recommend using a coffee maker that is designed to filter out minerals and limestone.

7. Is coffee made with alkaline water less acidic?

The answer is no. Coffee made with alkaline water is not less acidic. In fact, coffee is a naturally acidic beverage. The pH of coffee ranges from 4.85 to 5.10, which is slightly acidic.

8. Is it OK to use tap water in a Keurig?

You can use tap water in your Keurig, but it is not recommended. The reason for this is that the coffee maker will filter out impurities in the water, but it will not filter out all of the minerals and other materials that can cause problems with your coffee machine.

If you live in an area with hard water, it is best to use distilled water or filtered water in your Keurig. This will help to prolong the life of your coffee maker and keep it working properly.

If you do use tap water, be sure to descale your coffee maker on a regular basis to prevent mineral buildup from causing problems. You can find more information about descaling your coffee maker here.

9. Is reverse osmosis water good for coffee?

Reverse osmosis water is great for coffee because it removes many of the impurities that can cause unwanted flavors. This can result in a cup of coffee that tastes cleaner and brighter.

Additionally, using reverse osmosis water can help extend the lifespan of your coffee maker by preventing mineral buildup.

10. What are the disadvantages of hard water?

The main disadvantage of hard water is that it can leave behind deposits of minerals, such as calcium and magnesium, which can build up over time and cause problems.

These deposits can clog pipes and reduce the efficiency of appliances, such as coffee makers. In addition, hard water can make it more difficult to get laundry clean and can cause soap to lose its lather.

11. Is it better to use distilled water in a Keurig?

If you have hard water, it is best to use distilled water in your Keurig coffee maker. This will help prevent any build-up of minerals or limestone in the machine, and will also help ensure that your coffee tastes great.

12. How do I test the water in my coffee maker?

The best way to test the water in your coffee maker is to use a water hardness test strip. You can find these strips at most hardware stores.

To use the strip, simply dip it in a cup of water from your coffee maker for 30 seconds. After 30 seconds, compare the color of the strip to the chart that came with the strips.

The level of hardness is based on the number of grains per gallon (gpg) of calcium carbonate in the water: 0-3 gpg = soft water, 3-7 gpg = moderately hard water, 7-10+ gpg = hard water.

13. What is the best pH for coffee water?

The ideal pH for coffee water is between 6.5 and 7.5. This range ensures that the coffee grounds are extracted evenly, resulting in a balanced cup of coffee.

However, if your water has a higher pH, it can still be used for brewing coffee, but you may need to adjust the brew time or grind size to compensate.

14. Do coffee makers need to be filtered water?

No, coffee makers do not need filtered water. However, using filtered water can help extend the life of your coffee maker and improve the taste of your coffee.

Hard water can leave deposits on the coffee maker’s heating element and other parts, which can lead to premature wear and tear. In addition, hard water can also make your coffee taste bitter.

15. How does water hardness affect coffee taste?

The minerals in hard water can build up over time and clog your coffee maker, affecting the taste of your coffee. If you live in an area with hard water, it’s important to choose a coffee maker that is designed to deal with hard water.

16. Is coffee better with hard or soft water?

The quality of your coffee beans will have the biggest impact on the taste of your brew. However, the type of water you use can also affect the flavor of your coffee.

Hard water often has a high mineral content, which can give the coffee a bitter taste. In contrast, soft water may make coffee taste weak or diluted.

The best way to make coffee is to use filtered water that has been purified of hardness-causing minerals. This will help ensure that your coffee tastes great every time.

17. How do you stop hard water buildup in a coffee maker?

There are a few ways to stop hard water buildup in a coffee maker. You can use a water filter, which will help remove some of the minerals from the water before it comes into contact with your coffee maker.

You can also descale your coffee maker regularly, using either a commercial descaling solution or a DIY solution made from vinegar or lemon juice.

And finally, you can try using bottled water instead of tap water, which will also help to reduce the build up of minerals in your coffee maker.

Final Thoughts

So you have gone through our best coffee maker for hard water reviews. In short, before making the final resort, you should carefully consider key elements like brew temperature, filtration system, and budget. 

Regarding our suggestions, we believe they can deliver a satisfactory tasteful cup of coffee for you, especially when you live in areas with hard water as they all come with a great filter. 

If you want to seek an affordable traditional coffee maker that can give you the freshest cup of coffee, you can go for the CHULUX Single Serve Coffee Maker. This machine stands out with a flexible design for both ground coffee and coffee pods. 

Moreover, you can also opt for the Mr. Coffee 10 Cup Coffee Maker or the Cuisinart DCC-2650 if you are a busy person and want to have a cup of coffee as early as possible. 

These coffee machines come with advanced brew technology that can offer 20% to 25% faster-brewing speed than other products. Anyway, if you have any further ideas, please feel free to let us know. Thank you for reading.

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