Written by: Gene Fitzgerald // Expert Fact-Checking: Buddhini Dolapihilla, MBSS // Last Updated: Aug 4, 2023
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The Express Water WH300SCKS is a wallet-friendly whole house water filter that features a 3-stage filtration process.
The system was designed primarily for removing heavy metals from water and presents some enticing features like the transparent first-stage filter housing that allows you to confirm your filter’s state without dismantling the system.
We’ll analyze these and other features of the Express Water WH300SCKS and determine if it’s a worthy investment.
Most importantly, the Express Water WH300SCKS Heavy Metal 3-Stage Whole House Water Filtration System includes a sediment filter, a kinetic degradation fluxion filter, and an activated carbon block filter.
With a 15 gpm flow rate, it can be used conveniently by both small and large households.
The 3-stage filtration process works like this:
All in all, you get filtered water that is much healthier and tastes a lot better – at every outlet in your home!
Product warranty? 1 year!
The Express Water WH300SCKS whole house filtration system is more affordable than most, so it’s perfect if you’re working on a budget.
What’s more, the first-stage filter housing is clear and allows you to detect that your sediment pre-filter is due for a change without dismantling the system.
But that’s not all. The system has pressure release buttons for each filter stage, making it easier to unscrew filter housings during cartridge replacements (it’s more difficult to remove the housings with pressure still in the system, so a pressure release button helps).
The Express Water also has pressure gauges for each filter stage (that’s 3 pressure gauges!). The gauges help you monitor your system’s performance and let you know which filters need changing and when.
There’s also some flexibility to be enjoyed here. Because the system comes with 20×4.5 inch (big blue) standard-sized filter cartridges, they can be replaced with off-brand models or other cartridges from Express Water (like the iron filter cartridge). So you can customize your system however you want and maybe even save money doing so!
And lastly, the standing stainless steel frame which can be used for ground installation vs using the mounting bracket. The frame also provides a protective shield around the system against accidental bumps.
The Express Water whole house system removes sediments and dirt down to 5 microns. It also removes chlorine, pharmaceuticals, organic chemicals like VOCs, industrial solvents, and water-soluble heavy metals including lead, mercury, iron, and nickel.
It further removes bad taste and odor, pesticides, chloramine, and sulfur, and stops microorganisms from growing within the system.
The Express Water WH300SCKS – learn more on Amazon.com
Installing this system is a bit more complicated than usual because there’s no in-built bypass valve, and you have to install a bypass on your own (if you want one). Aside from that, there is no reason not to try to install this system DIY-style as long as you are handy with tools.
Tools needed to install this system include:
Depending on your plumbing setup, you may also need a soldering iron or torch power drill.
Parts you need include:
Note: Installation steps may differ depending on your home’s plumbing setup. You may need to use different pipes or fittings. If your water source is prone to sudden pressure spikes, you may also need to purchase a pressure protection/reducer valve.
The installation steps are detailed below:
Note: The flushed water will appear darkish in color due to the loose carbon particles that are flushed out of the system. It could also be cloudy because of air bubbles getting forced out of the system and pipes. When you notice this, don’t be alarmed – it’s completely normal and temporary.
Keep the water running until it clears up, and then let it run for 5 more minutes. Wait for 30 more minutes, and then run the cold water for an additional 10 minutes. Your system is now ready for use!
Each filter stage of the Express Water heavy metal whole house filter is designed to last for 6-12 months (or 100,000 gallons of water). However, your filters may need to be replaced sooner (or later) depending on the quality of your water, your water usage, and factors like water temperature. If your home water pressure suddenly drops by 10-20 psi, it’s probably time to replace filters.
Annual replacement costs range from $170- $340, depending on how often you replace. The maintenance cost here is higher than with many other whole house water filters but still reasonable.
Here are step-by-step instructions for changing the filters:
Here is a link to the official manual:
There are no NSF certifications for this product as far as we can tell.
To our knowledge, this product does not have any earlier versions.
The first downside to the Express Water heavy metal whole house water filter is that there are apparently no NSF certifications for contaminant reduction, so you can’t completely trust that the filter removes all the listed contaminants.
Besides, the system is for low heavy metal levels only.
Also, it may be unsuitable for heavily contaminated water like most well waters. If you can recall, the Express Water filters are said to last 6-12 months, but users complained that theirs only lasted a few months before needing replacements. Obviously, this means more money spent on replacements and higher maintenance cost.
There have also been many complaints about a drop in water pressure after installing the system.
Finally, we would have preferred a built-in bypass.
All in all, the Express Water WH300SCKS whole house water filter is solid for filtration of water with chlorine/chloramine and low levels of certain heavy metals like mercury or iron.
It’s reliable if you’re only trying to improve your water’s aesthetics, but if you have serious heavy metal contamination in your water, we recommend choosing a specialized filter like the Springwell WS for manganese/iron or the PIONEER for lead.
Let’s see how the Express Water filter measures up against a popular competitor, the SpringWell CF.
The SpringWell CF (check our full review here) is a tank-based whole house filter system that also uses KDF filter media and catalytic carbon to remove contaminants like chlorine, chloramine, pesticides, PFAS, disinfection byproducts and more from water.
The reason why we prefer the SpringWell CF, however, is because it uses a lot more catalytic carbon and KDF, so it has higher reduction rates and can be better used where there’s heavy contamination.
The SpringWell also has a longer filter life (1,000,000 gallons or 6 years). Considering the maintenance cost of no more than $40 a year, the SpringWell is much cheaper to maintain in the long run, despite the steeper initial cost which is the system’s biggest downside – it costs between $1,000 to $1,750 (depending on the unit size chosen).
Also, let’s not forget that with SpringWell CF, you’re entitled to a limited lifetime warranty and a 6-month money-back guarantee if you are unsatisfied with the product. The Express Water system only offers a 1-year warranty.
In all, the SpringWell provides better filtration results, is cheaper in the long run, and lasts longer. In our opinion, it’s a healthier and more economical choice.
This completes our review of the Express Water Heavy Metal Whole House Water Filter. If you have any questions please don’t hesitate to leave a comment below!
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