Why Do You Need a Water Filter?

When investing in a new espresso machine, there’s one essential component that often gets overlooked—the water filter. A water filter does more than just remove impurities—it protects your machine from harmful scale buildup and gunk that naturally occurs in tap water. Over time, untreated water can cause serious damage to internal components, leading to expensive repairs or replacements.

Clean, filtered water also enhances the flavour and clarity of your espresso, making every cup taste that much better.

 

Our Top Pick: BWT Bestmax (L)

At Shop Coffee, we stock a wide range of water filters to suit every setup, but right now, one deal stands out: the BWT Bestmax Large.

This powerhouse filter can process up to 5,200 litres of water, which equates to roughly 85,000 double espressos. Yes, you read that right—85,000. While this might seem like overkill for a small café or home setup, it offers exceptional value.

Here’s the kicker:

• BWT Bestmax Medium 

• BWT Bestmax Large 

So, not only does the Large filter last significantly longer, it’s also cheaper thanks to Shop Coffee. It’s a no-brainer.

 

Our Premium Pick: BWT Bestmax Premium (XL)

Here we have the same sort of deal going on—our XL is actually cheaper than the Medium.

• BWT Bestmax Premium Medium 

• BWT Bestmax Premium XL 

The difference? The Premium filter takes things a step further. It removes gypsum, a sulphate mineral commonly found in tap water that can affect both your machine and the taste of your drinks. Even better, it adds magnesium—a natural flavour enhancer—into the water. That means your teas and coffees not only come out cleaner but also taste noticeably better. It’s a win-win for flavour and machine health.

 

The Bottom Line

Don’t skimp on your machine’s water filter. It’s a small investment that protects your equipment and dramatically improves your coffee. Whether you’re a café owner or a home barista, upgrading to a high-capacity filter like the BWT Bestmax Large—or levelling up to the flavour-enhancing Premium XL—is a smart move, especially while these deals last.

Browse our full range of water filters at Shop Coffee, and make sure your machine stays in top-tier condition for years to come.

Browse all water filters