Frizzlife SK99 3-Stage Under Sink Water Filter Reviews

The SK99 is yet another under sink water filter model from Frizzlife that stands out on our list when it comes to filtering contaminants in municipal water. It’s a quality unit offering superb functionality and filtration ability that guarantees great results.

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Filtration Performance

The Frizzlife SK99 is equipped with 3 stages of filtration comprising of a sediment filter and two carbon filters that provide high precision filtration of harmful contaminants.

Stage 1 of the system is a pleated PP sediment filter cartridge and it delivers much better performance than conventional filter cartridges in removing sediments and particles from the water.

It has multiple layers on its surface that facilitate greater surface area and with 5-10 filtration precision, it will eliminate tiny to large particles present in the water including sand, silt, dirt and rust thereby ensuring better protection for the later 2 stages.

Stage 2 is made up of a carbon filter cartridge which serves as the initial filtration stage for most of the chemical contaminants. With a 3 to 5-micron precision, this filter performs well to significantly reduce the amount of chlorine, chloramine and other chemicals in the water.

It also removes volatile organic compounds (VOCs) as well as residual particles that may have made past the sediment filter.

At the final stage is the Frizzlife top-grade carbon block filter cartridge providing up to 0.5-micron filtration precision which is almost 10 times higher than many other brands as most of them with similar filters often have an average precision of 3 microns.

This remarkable contaminant removal performance allows the filter to clear out over 99.99% of lead, chlorine and the remaining VOCs and chloramine.

The filter will also remove fluoride, cysts and other heavy metals like arsenic, mercury, and cadmium thereby producing cleaner water with no unpleasant odor, taste or color.

Same to the Frizzlife MK99 model, the filtration process of this SK99 system does not touch the essential minerals. Calcium, potassium, magnesium, sodium, and phosphorus are some of the health-benefiting minerals it leaves behind which means the water that comes out is both clean and healthy with a fresh, natural taste.

Capacity and Efficiency

According to Frizzlife, they have not provided the exact capacity for this model because of the variation in the level of usage and quality of water amongst different users.

Nonetheless, you can expect to get a decent capacity plus the flow rate is fairly high. It’s rated to produce 1.7 gallons per minute but it can go up to 2 GPM at 60 psi feed water pressure and there’s zero water wastage, so it’s highly efficient too.

Installation and Maintenance

Even if you are completely inexperienced, installing the SK99 will pose no challenge whatsoever. It’s a DIY installation system that requires just following the straightforward instructions provided to set it up within a few minutes and it connects to the existing faucet.

It will fit both the 3/8” and ½” water line.  A housing wrench and everything you need to install it is provided as well as two extra 3/8” to ½” converters. Furthermore, the system utilizes the twist-in filter design which allows you to change filter cartridges effortlessly.

Only the inside filter cartridges are replaced, not the filter housing which is a notable feature of most of Frizzlife under sink water filters and it means you will benefit from lower costs with regards to filter replacement.  

The service life of the sediment filter is 6 to 12 months while that of the 2nd stage carbon filter is 8 to 12 months. For the last carbon filter, you will need to change it every 12 to 18 months.

Compared to many 3-stage under sink water filters out there, the exceptional performance and overall quality of this Frizzlife SK99 unit undoubtedly make it one of the best models. It’s a unit you can rely on to give you clean drinking water without any fuss.

Pros

  • Effective 3-stage filtration process removes a lot of contaminants
  • Essential minerals are left behind during filtration
  • Can produce up to 2 gallons of filtered water per minute
  • Simple DIY installation and filter cartridge replacement
  • Compatible with 3/8” or ½” cold water line

Cons

  • Not suitable for filtering well water
  • The exact filtration capacity is not indicated

Read moreFrizzlife SK99 3-Stage Under Sink Water Filter Reviews

APEC Water WFS-1000 Under-Sink Water Filter Reviews

APEC Water is a reputable manufacturer of water filtration systems with a long history of producing quality products. Their WFS-1000 under sink water filter system does not disappoint either as it’s amongst their top products with much positive reception.

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It’s a basic under sink water filter designed purposely for removing chemical contaminants from the water, especially chlorine. If your water is already good but you just want to refine it and protect yourself against any potential contamination, then this is a nice option to check out.

Filtration Performance

The APEC Water WFS-1000 has 3 filtration stages consisting of a sediment filter and two carbon block filters which together provide a commendable filtration performance.

At the 1st stage is the high-grade 10″ polypropylene sediment filter which extracts as many sediments as possible from the water including dust, rust, silt, and other tiny and major particles in order to protect and maintain the filtering ability of the next stages.

The water then goes through an extruded carbon block filter in the 2nd stage which is typically made up of activated carbon particles fused together into a single block.

This serves as the first point of carbon filtration where a majority of the chlorine, VOCs and other chemical contaminants like pharmaceuticals, pesticides, and herbicides are initially removed from the water. Unwanted tastes, odors, cloudiness and residual sediments are cleared out as well at this stage.

The 3rd stage has the same extruded carbon filter which performs the final refining by further removing the remaining chlorine, odor, tastes, color, cloudiness and other chemicals.

The use of these dual carbon filters significantly boosts the filtration performance of the unit allowing it to get rid of almost all the chlorine, tastes and VOCs from the water, and also organic chemicals.

The mineral composition and alkalinity of the water do not change throughout the filtration process. The result is mineral-rich water that’s clean, looks clear and tastes fresh.

Capacity and Efficiency

APEC has not specified the total gallon rating for this WFS-1000 model but if we have to give an estimate, it will process more than 1,000 gallons of water before needing replacement.  

For a lot of households with regular normal usage, this means it’s likely to last 1 to 2 years provided your water is not highly contaminated. It’s a decent lifespan compared to most similar systems.

Although the unit uses three filtration stages, you won’t notice a big change in the water flow. It has a maximum flow rate of 1.6 gallons per minute, thereby it will filter the water quickly and provide a continuous on-demand supply of clean purified water to your faucet. Furthermore, no water is wasted, so your monthly water cost won’t change much.

Installation and Maintenance

The WFS-1000 comes fully assembled for installation. What’s required is to mount it in the desired location, insert the filter cartridges, and connect the tubing.

The challenging part may be to install the faucet as it’s designed to work with a separate dedicated faucet for dispensing the filtered water.

The package comes with 100% lead-free chrome faucet, hence if there’s no pre-made hole in your kitchen counter, you might have to drill one to install this faucet.

The unit falls in the medium to large size end and as such, it should fit under most standard kitchen cabinets. If it’s small, then you will have to adjust some stuff to create room for it.  

There’s little work to do with regard to maintenance because it’s just replacing the filters at least after every 12 months and it’s equally an easy and quick process.

Now one of the setbacks of this unit is that despite having dual activated carbon filters, it still cannot eliminate chloramine from water which might be a concern for those living in cities that utilize chloramine to treat water instead of chlorine.

According to APEC, the filter will also not remove fluoride, bacteria and heavy metals like lead and arsenic. Total dissolved solids as well pass right through the filters. What this generally means is that it’s not ideal at all for filtering well water.

In conclusion, as long as you are seeking to purify only municipal water that’s treated with chlorine, the APEC WFS-1000 will be a better fit for you. It will serve you for long and deliver the water quality you desire.

Pros

  • Designed for removal of sediments and chemical contaminants
  • Eliminates unpleasant tastes, odors and water cloudiness
  • Doesn’t interfere with essential minerals or water alkalinity
  • Can process more than 1,000 gallons of water before replacement
  • Installation is fairly easy as well as changing the filters
  • Comes with a 1-year limited warranty and a dedicated standard faucet

Cons

  • It’s not able to filter out chloramine, fluoride and heavy metals
  • Not the most compact under sink water filter system

Read moreAPEC Water WFS-1000 Under-Sink Water Filter Reviews

iSpring US31 3-Stage Under Sink Water Filter Reviews

Taking the 7th spot on our list is the iSpring US31 under sink water filtration system. iSpring is a famous company in the water filtration industry known for producing top-of-the-line water filtration systems particularly reverse osmosis systems and replacement parts.

The company now includes under sink water filters on their long list of products and the US31 is one of their best models that has made a significant mark on the market.

It has been built to the same level of quality we’ve seen in most of iSpring’s systems with an aim to provide a convenient and efficient way to facilitate the supply of clean, healthy water.

Filtration Performance

To start, the iSpring US31 filter system features a more standard design with 3 separate stages of filtration that work to remove a lot of harmful contaminants.

In the 1st stage, the water flows through a universal 10” polypropylene sediment filter where common sediments are cleared out down to 5 microns.

It removes sand, dust, rust, dirt and all tiny particles which not only improves the purity of water but also helps protect and extend the life of the system itself.

The 2nd stage contains 5-micron CTO carbon and GAC filter which is a combination that effectively removes chlorine, chloramine VOCs, and many more common chemicals that contaminate the water and cause colors, cloudiness, bad tastes, and odors. These two filters also help reduce the number of heavy metals like lead and arsenic present in the water.

From there, the water goes through another CTO carbon filter in the 3rd stage where the remaining chlorine, chloramine, VOCs and other chemicals, as well as heavy metals, are further extracted from the water thereby improving its taste, smell and clarity.

These three stages will remove all these contaminants without losing the minerals in the water as is the case with RO systems.

The filter is equally designed to control and discourage bacteria and parasites from developing in the water, thereby if bacterial contamination is of concern, then you are guaranteed that the filtered water produced at the faucet will be of great quality.

Capacity and Efficiency

This US31 model from iSpring is rated to provide up to 2000 gallons of water which is sufficient capacity to give you almost one year of service before you can replace the filter cartridges.

Basically, depending on the usage and water quality, you will have to change the filter cartridges every 6 to 12 months. The higher the usage and level of contamination, the shorter the lifespan will be.

The flow rate, on the other hand, can reach up to 1 gallon per minute again depending on your source water pressure.  It may not be that high, but it’s just fast enough to ensure you constantly have access to clean water on demand straight from your tap.

Installation and Maintenance

Installing and maintaining the US31 is a somewhat simple task although you may have to drill an extra hole into your countertop since it uses a separate faucet included in the kit.

If you are handy or have some basic DIY skills, it could take less than 30 minutes to set it up and the kit has everything you need including the feed water adapter, tubes, fittings adapter, a wrench, and a clear and easy-to-follow installation manual.

All three filter cartridges require replacing every 6 to 12 months and as we mentioned above, this will depend on your usage and the level of contamination of your water.

Changing the filter is as easy as installing them the first time and even much better, the 1st stage filter has a clear see-through housing to enable an easier visual inspection of the cartridge so that you can always replace it at the right time.

Moreover, the system can handle a maximum pressure of 90 psi, so the fittings are not going to blow apart and come out with the standard 60 psi municipal water pressure.

Considering that the 3-stage filtration process is highly effective in removing different contaminants and the capacity is reasonably large, the iSpring US31 is a unit that we would recommend to anyone looking for quality and reliability.

Pros

  • Will effectively remove sediment, chlorine, and several different contaminants
  • Keeps essential minerals and prevents bacteria from thriving in the water
  • Relatively high capacity of up to 2,000 gallons of water
  • Simple DIY installation and maintenance process
  • Has a clear see-through 1st stage housing for an easy visible inspection
  • Comes with a durable, brushed nickel all-metal dedicated faucet
  • Backed by a 1-year limited warranty

Cons

  • The flow rate is a bit low at 1 GPM
  • Meant for use with only municipal water

Read moreiSpring US31 3-Stage Under Sink Water Filter Reviews

Aquasana AQ-5300 Under Sink Water Filter Reviews

The Aquasana AQ-5300+ also known as 5300 Max Flow is much similar to the Aquasana AQ-5300 model but with a slightly larger capacity and faster flow rate.

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However, the two models feature 3 filtration stages rather than the 2-stage process of the AQ-5200 model. In other words, the AQ-5300+ is a robust and super effective system as you are going to see below.

Filtration Performance

Like the AQ-5200 above, the Aquasana AQ-5300+ model utilizes Claryum filtration technology but with an additional stage to make it a 3-stage filtration system.

Stage 1 of the system is fitted with a 20-micron sediment pre-filter which traps silt, dirt, rust and other visible sediments to prevent the following stages from clogging too quickly.

It’s a feature that often misses in most under sink water filters yet it’s really essential particularly in areas where the sediment and silt levels in the water are higher than normal.

Stage 2 and 3 consist of Aquasana’s Claryum filtration technology which is made up of activated carbon filter, catalytic carbon filter, ion exchange, and sub-micron filter.

At first, the water flows through the granular activated carbon filter where a significant amount of both organic and inorganic chemical contaminants that include chlorine herbicides, pesticides, pharmaceuticals and VOCs are removed from it along with unpleasant tastes and odor caused by these chemicals.

From there, the water goes through the catalytic carbon filtration media which is a more powerful carbon filter that clears out 99% of the chlorine and remaining chemical contaminants in the water. It also totally reduces chloramine present in the water, something that most under sink water filters cannot.

After that, the water passes through an Ion exchange filter which features a series of resin beads with large surface area and they work effectively to extract heavy metals like mercury and lead plus other micropollutants that the carbon filters fail to catch.

At the last stage of the filtration process which is the 3rd stage, we have the sub-micron filter which clears out the remaining particles and contaminants from the water down to 0.35 microns. It will capture asbestos, chlorine-resistant cysts like cryptosporidium and giardia, and any other impurities that the earlier two stages couldn’t remove.

These three stages together will eliminate up to 99% of 77 different kinds of contaminants but leave behind healthy minerals to give you a clean, fresh and natural-tasting water.

They will also not remove other total dissolved solids (TDS) and the only microbes they can remove are cysts hence it’s not that effective for bacterial removal which simply means you should only use the unit to filter treated water that’s microbiologically safe. It’s certainly not recommended for use with well water which doesn’t contain chlorine for disinfection.

Capacity and Efficiency

While the AQ-5200 has a filtration capacity of 500 gallons and the AQ-5300 600 gallon, this AQ-5300+ model offers up to 800 gallons before a change of filters is needed. 

This slight improvement in the total amount of water it can process is mainly brought about by the larger cartridges it uses and it will allow you to utilize the unit for up to 6 to 8 months before replacing the filters.

The flow rate is equally a bit faster than that of the previous two models. They delivered not more than 0.5 gallons per minute yet the AQ-5300+ provides 0.72 GPM which is not much change but it’s significant enough to ensure you get slightly faster water flow from the faucet.

Installation and Maintenance

Hooking up this Aquasana unit should not pose a problem if you have some basic DIY skills. The installation manual explains the entire process step by step and all the necessary parts are included with the first set of filters already installed in the system.

It won’t take more than an hour to set it up but like the AQ-5200, it comes with its own dedicated faucet that you need to install, so some drilling might be involved.

No much maintenance is required other than occasionally changing the filters at least after every 6 months and cleaning the exterior of the unit.

Another good thing is that this system too comes with a battery-operated alarm/indicator which will beep an audible alert and flash red to remind you when filter replacement is needed.

You can even link the system to your phone via Bluetooth to receive the alerts on your phone. There’s an app from the manufacturer that you can download and install for free, and keep track of the number of gallons of water have been processed. 

Unfortunately, this app is only available for iOS devices. The indicator also uses a battery that will require changing with every filter replacement which translates to some additional costs although not very much to cause concern.

From all these wonderful features to the high filtration performance, it’s safe to say that the Aquasana AQ-5300+ is an under sink water filter that’s worth every penny.

For those that prefer Aquasana products and the AQ-5200 model didn’t win them over, this is an alternative you might want to check out.

Pros

  • Highly effective filtration process for an under sink water filter
  • Removes 99% of chlorine and chloramines, and keeps essential minerals
  • Decent filtration capacity of up to 800 gallons
  • Fairly easy DIY installation and filter replacement
  • Monitors filter life and alert you when filter replacement is needed
  • Can be linked to a phone via Bluetooth for easy filter life monitoring
  • Comes with a 2-year warranty and 90-day satisfaction guarantee

Cons

  • Water flow rate is somewhat low at 0.72 GPM
  • Does not remove fluoride or treat bacterial contamination

Read moreAquasana AQ-5300 Under Sink Water Filter Reviews

Whirlpool WHAMBS5 Under Sink Water Filter Reviews

The Whirlpool WHAMBS5 is the last model on our list but certainly not the least. Coming from a company that has been in the industry for the longest time, this model is a quality yet budget-friendly under sink water filter system that provides the necessary filtration capability to keep your municipal water clean and safe for your family’s daily usage.

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Filtration Performance

The Whirlpool WHAMBS5 utilizes a 3-stage filtration process that’s certified to NSF/ANSI standard 42 and 53 to remove numerous harmful and undesirable elements in tap water.

The 1st stage is a standard 10” sediment filter cartridge with a specialized design meant to trap incredibly tiny sediments and particles from the water

It will clear out rust, dirt, silt and other particulates down to 0.5 microns thereby preventing the filter cartridges in the following two stages from clogging.

The 2nd stage consists of a standard 10” carbon block filter cartridge which removes up to 99% of lead in the water and as well serves as the pre-filter to the 3rd stage by reducing a good amount of chemical contaminants that cause unpleasant odor and taste.

The 3rd stage features a much bigger filter cartridge compared to the other two stages and it’s the heart of the system. It holds a larger top-quality activated carbon block filtration medium that provides a higher surface area than standard carbon-based filters.

The larger surface area significantly enhances its adsorption ability allowing it to effectively eliminate greater amounts of chlorine (up to 97%) and many other chemical contaminants such as benzene, pharmaceuticals, pesticides, insecticides, herbicides, and industrial solvents. It will also clear out all the bad odors and tastes caused by these chemicals. 

Moreover, this large activated carbon filter conforms to the NSF Protocol P231 for the reduction of microbiological contaminants. Therefore, it will equally serve as a microbiological purifying filter with the capability of removing at least 99% of bacteria, microbial cysts, and viruses.

The three stages will remove all the above contaminants and much more but at the same time, it will leave the natural essential minerals found in the water giving you healthy, great-tasting purified water.

Filter Capacity and Efficiency

Whirlpool has rated this model to process a maximum of 550 gallons throughout its lifespan which puts it in the same category as the other low capacity models we’ve reviewed.

Provided you process around 2 to 4 gallons of water per day, you can expect to receive 4 to 6 months of reliable filtration performance before you replace it with a new filter cartridge.

For the water flow rate, it stands at a maximum of 0.74 gallons per minute, so also expect a moderate delivery speed, a little bit slower than that of your regular cold water kitchen faucet.

Installation and Maintenance

The Whirlpool WHAMBS5 system comes with a dedicated filtered water faucet that needs to be mounted on your countertop.

If you have an available faucet hole, you will have an easier time setting up the entire system, otherwise, you will need to drill one which is the only tricky part especially for first-timers. The unit holding the three cartridges is compact and will fit neatly in any standard-sized under sink kitchen cabinet.

You won’t break a sweat either when it comes to replacing the filter cartridges since they use a twist-in design. It requires just a simple ¼ turn to release the old filter, then pulling it out and replacing it with the new one. 

You don’t need to turn off the water supply plus the faucet is equipped with an amber LED indicator that monitors the filter life after installation.

It will flash continuously once the 6 months have passed to alert you that the filter cartridges and battery need changing hence saving you from getting caught off guard. 

Though the filtration capacity and water flow rate leave a lot to be desired, we can comfortably say this Whirlpool WHAMBS5 model is a very decent and well-made under sink water filter system. It’s a nice budget option for those who wish to enjoy safer, better-tasting water without making a big dent on their wallet.

Pros

  • Rigorous filtration process removes numerous contaminants
  • Capable of removing microbiological contaminants like bacteria and viruses
  • Won’t interfere with the natural essential minerals in the water
  • Installation is relatively simple while filter replacement is a breeze
  • Faucet has an amber LED indicator that alerts when to change the filters
  • Backed by a 1-year limited manufacturer warranty

Cons

  • Filtration capacity is low at only 550 gallons
  • The speed of water flow is low too at 0.74 GPM

Read moreWhirlpool WHAMBS5 Under Sink Water Filter Reviews