Top 10 Water Filters to Remove Calcium & Lime Buildup

If you’ve noticed white crusty buildup on your faucets, cloudy spots on your dishes, or reduced water flow from your showerhead, calcium and lime are the culprits. Left unchecked, those mineral deposits clog pipes, damage appliances, and cost you real money in repairs.

The good news is there are several ways to deal with it, from simple faucet filters for your drinking water to whole-house softeners that protect everything. Below are 10 of the best options across different categories so you can find the right match for your situation.

Quick Comparison Chart

1. TAPP2 Click — Best Faucet Filter

The TAPP2 is a faucet-attached filter that starts working at the end point of your water system. While it only treats water at the tap, it can solve some issues regarding limescale in your drinking water and connected appliances.

The focus of the TAPP2 is on drinking water, and it does a great job taking away all of the unpleasant or dangerous elements found in tap water. It also eliminates bad smell and taste without adding any other elements to your water.

How does the TAPP2 do the filtering? Just like most common filters, the TAPP2 works with GAC which stands for Granulated Activated Carbon.

It comes in two versions: one where you set the change date manually, and one with a Bluetooth button that connects with an app to let you know when the filter needs replacement.

There are more benefits to the TAPP2, mainly how convenient it’s due to the extremely easy installation and recharge process. You simply twist the device onto your faucet and twist the filter in and out for replacements.

Also, TAPP2 has a reasonable price for the main device and four filters which are said to last for a year, with additional filter packs available separately.

These are a lot of promises, so why should you put so much trust in this device? Well, beyond how convenient the product is, the main reason it ranks here is the credibility of its claims and the institutional support it has.

The TAPP2 is backed by the Spanish Government, co-founded by the Horizon Programme of the European Union, and labeled by the Solar Impulse Foundation.

Given all that, if your main problem with limescale comes from your drinking water or because appliances like kettles get ruined by calcium accumulation, the TAPP2 is the best option in the market right now. For whole house solutions, see our guide on how to install a whole house water filter. Just one little extra thing: the filters use organic GAC which is said to be made entirely out of coconuts.

2. APEC ROES-50 — Best Under-Sink RO

The APEC 5-stage is one of the most popular water filtering systems on the market. It provides clean drinking water, though it will only treat water at the sink rather than your whole house.

This under-sink system has better durability and a more complex filtration process. It combines both activated carbon and reverse osmosis for thorough mineral removal.

This should get you better results than faucet-only filters at eliminating limescale since it will prevent accumulations in your faucet and end-line pipes. In regards to cleaning tap water, this keeps being one of the stronger options.

Anyway, in regards to the work that it does cleaning tap water, this keeps being one of the better options. It has WQA and FDA certifications as well as more than two decades of credibility from the APEC brand.

3. Home Master Standard RO — Best Versatile RO

The Home Master Reverse Osmosis line is one of the most trustworthy systems on the market. Any version will do the work you need at purifying water, and all are quite easy to install as they come with a tank and flexible tubes easy to place under the sink.

Some of the nice things about the Home Master include its good durability, having filters that should be changed only once a year, and a flow rate said to be at least two times greater than standard filters. The great added benefit is how many options are available, as you can select between ten versions depending on your specific needs.

However, the Home Master is a system limited to the sink, not being effective for cleaning your whole house of limescale. All versions are a bit expensive, but the reliability and versatility make them worth considering.

4. ScaleBlaster SB-75 — Best Electronic Descaler

This doesn’t look like a filter so why put it in here? The ScaleBlaster is a kind of filter that acts in a slightly different way from usual filters. Instead of directly acting as a net that separates what we want from what we don’t want, the ScaleBlaster emits electromagnetic waves that turn calcium ions into larger particles that are too big to accumulate in pipes.

The ScaleBlaster is something more like an electric filter. This type of electronic filter is called a descaler, and the ScaleBlaster is one of the more reliable options.

It can be installed on the main pipelines in your home, so it gets to do the job of protecting your whole house from limescale.

The ScaleBlaster doesn’t remove calcium from the water. It just makes the particles too large to cause accumulations, and those particles might still get into the water you drink and use for other purposes.

So you may still need a separate drinking water filter.

Customer reviews from people with very hard water suggest the ScaleBlaster barely shows any sign of stopping limescale formation in extreme cases. Also, it comes with no warranty when purchased through Amazon or eBay, which isn’t too convenient.

5. iSpring ED2000 — Best Reviewed Descaler

The iSpring ED2000, like the ScaleBlaster, is another electronic descaler with better reviews overall. It uses electromagnetic waves to bond small calcium and magnesium particles so they get carried away by the water flow.

The main difference between this and the ScaleBlaster lies in the larger number of positive reviews. Both products are usually rated similarly in effectiveness.

Both can do the job, and the iSpring comes with a manufacturer warranty. For whole-house scale prevention without chemicals or salt, this is a solid option.

6. SoftPro Elite — Best Water Softener

With the SoftPro Elite, we get into the truly full water softening systems. SoftPro is a water softener, which is quite different from a water conditioner. Descalers are called water conditioners because they change the composition of molecules inside water but don’t take the minerals away.

Water softeners, on the other hand, actually get rid of elements like magnesium and calcium using sodium or salt. The problem is that the salt used in the softening process might only count as another unwanted element for drinking water.

Even so, if the problem you deal with comes from limescale appearing throughout your entire house and clogging pipes, then a water softener is the best solution. This option won’t exactly solve the problem of getting calcium-free drinkable water from your tap.

Beyond all those details, the SoftPro is one of the best options for water softening. It features automatic settings for easy maintenance and UpFlow technology that increases efficiency while saving both salt and water.

7. Aquios FS-234 — Best Simple Softener

The Aquios FS-234 is another water softener, but without the fancy features of the SoftPro. This is no more than a basic filter for water softening, and there’s not much more to say about it. It’s a basic, simple, and pretty useful way to get rid of hard water and calcium accumulation throughout an entire house.

Although the price might be a bit high compared to other options, it remains around a reasonable price point. It’s an immediate solution for the person who simply wants to get things done without extra complexity.

Given its simplicity, the Aquios is a slightly better general option than the SoftPro for people who just want their hard water problem solved without learning complex features.

8. GE 40,200 Grain — Best Smart Softener

The GE 40,200 is called a Smart Softener, which tells us it features a modern electronic operation system. It makes modulation and control easy by letting you know when it needs to be recharged and automatically adjusting to your water usage patterns.

The most important thing about its automatic adjustment is that it allows for greater water consumption efficiency and less wasted water. This translates into better overall performance compared to manual systems.

The smart features in the GE are somewhat simpler than those in the SoftPro. However, they automate the process of adjusting pressure instead of just providing information, which many users prefer.

9. Fleck 5600 SXT — Best Market Standard

The Fleck 5600 is the most popular and effective water softening system in the market. We think that credibility is achieved through proven time of effectiveness, and the Fleck 5600 has that in abundance.

Sure, we should try out different products and give the chance to other brands to build credibility. But if you ask about what can be proved as the most trustworthy option, this is the one.

The 5600 isn’t only a market staple but a renewed product that comes with most of the things you can ask for in modern water softeners. It’s straightforward with a simple installation process.

It features a built-in computer to measure use and softener remaining, and it can be programmed for meter regeneration. If you want the most proven option for water softening, this is it.

10. Aquasana Rhino — Best Whole House

This is a large and expensive whole-house water filtering system, but it may be your best option in the long run. It aims so strongly at doing everything that can be done that it has four different filtering stages and two optional ones to include if you want.

The system includes a first filter to catch big sediments like rust and silt, a second filter which is a water conditioner, a third filter for unhealthy components, and a fourth one that uses activated carbon. The two optional stages address small particles and bacteria.

Appliances that constantly use water should last longer, and cooking should be slightly more effective because of the softer water. Pipelines shouldn’t need constant de-clogging, and you wouldn’t be spending on any other type of filter. To understand the differences between all of these approaches, read our breakdown of what is filtered water.

All of this lasts for the next 10 years with the 1,000,000-gallon capacity. Such extensive benefits make the Aquasana the best option available for all problems related to limescale and water contaminants.

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What Filter Options Do You Have to Deal with Calcium and Lime Accumulation?

The obvious answer is that you can filter these compounds, and many products do the work. With filters, there’s a wide range of options, each aiming at something different.

The smaller versions include water bottles with small filters, countertop tanks with filters, faucet attachments, and under-sink systems. Larger options include water softeners, electric water softeners, water conditioners, and other complex combinations.

There are also different ways these filters can act. Many now use Granulated Activated Carbon, while some older versions use reverse osmosis.

Water softeners use salt to replace unwanted elements.

Electric conditioners use electromagnetic waves, other devices use salt-free softening, and many systems use more than one of these methods. Just remember, there are many different types of devices and products that help you filter and treat the water that gets into your home.

They work in several different ways and for different purposes. Always be sure about what you’re searching for so you can find the device that better fits your needs.