Whirlpool WHES40E Water Softener

Whirlpool is a reputable appliance brand in the world and amongst the many products they manufacture are water softeners that really stand up against the competition with regards to performance, usability, and price.

Key Features:
  • Eliminates all possible traces of water hardness
  • Can also clear out iron deposits to a maximum of 10 ppm
  • Demand initiated regeneration process recharges only when necessary



Things we like

  • Eliminates all possible traces of water hardness
  • Can also clear out iron deposits to a maximum of 10 ppm
  • Demand initiated regeneration process recharges only when necessary
  • Smart salt-saving technology helps minimize salt and water consumption
  • Relatively large capacity of 40,000 grains ideal for households of 1-6 people
  • Simple, user-friendly display and programming system
  • Regeneration cycle can be customized to your preference
  • Low salt indicator to alert you when it’s time to add more salt
  • Compact, single-tank design which takes up little space
  • Easy to set up and needs less maintenance
  • Comes standard with a full 1-year warranty on parts and labor

Things we don't like

  • Several complaints about poor shipping that’s likely to damage the unit

Whirlpool is a reputable appliance brand in the world and amongst the many products they manufacture are water softeners that really stand up against the competition with regards to performance, usability, and price.

The WHES40E water softener is one of them and it does live up to Whirlpool’s great reputation. It’s a unit designed to provide the most optimal balance between value and performance.

The system boasts of highly-effective softening ability, an efficient regeneration process, and a quite large capacity of around 40,000 grains.

Besides the WHES40E water softener, Whirlpool has a few other models on the market that offer different grain options to meet the needs of various customers.

At the lower end is the Whirlpool WHES30E model which provides a capacity of 30,000 grain. It’s followed by the Whirlpool WHESFC model with a 31,000-grain capacity and the Whirlpool WHES33 model which offers 33,000-grain capacity.

These systems are nearly identical in terms of design but differ slightly when it comes to softening ability, capacity, and the extra features they come with as you will see in this Whirlpool WHES40E review.

Softening Capability

The Whirlpool WHES40E is a single tank water softener that combines the brine and mineral tank into one, compact unit. It’s a high-performance system that’s NSF certified to eliminate water hardness efficiently.

The mineral tank of the unit holds super-effective resin media which is capable of clearing out a maximum of 125 grains of water hardness per gallon. This is a very powerful softening ability which makes the WHES40E a perfect choice for use at homes with extreme water hardness levels.

Similarly, it has the capacity to eliminate iron deposits up to levels of about 10 ppm which basically means each and every kind of iron element present in your water will be cleared out. If you struggle with high levels of iron and water hardness, then this is an ideal softener for you.

Regeneration Process

This Whirlpool WHES40E softener utilizes demand-initiated regeneration technology. That means it will continuously monitor your water usage and hardness level, then automatically calculate the amount of salt and water that’s required for the regeneration process.

This way, it only regenerates when necessary which results in a significant reduction in water and salt consumption as there is no unnecessary regeneration like in older timer-based models hence saving you money. It efficiently uses water and salt by only regenerating when you need it.

Another innovative way this Whirlpool water softener prevents wastage is through its salt-saving technology, otherwise known as the Sixth-Sense technology.

This Whirlpool’s patented technology is one of the best features you will find in their units and it’s what earns them a place amongst the most salt-efficient water softeners in the industry.

The technology allows the Whirlpool WHES40E system to learn your water usage pattern and calculate how much salt it will require to regenerate the resin. As such, the system never uses more salt than what’s needed, it uses just the right amount.

With this technology and the efficient demand-initiated regeneration process, the Whirlpool WHES40E will provide your entire home with soft water while at the same time significantly minimize the amount of salt and water used to keep it at peak performance.

Even more, the unit is designed to trigger an additional backwash cycle which helps to rid itself as well as your water supply of any excess non-ferrous iron.


Having a 40,000-grain capacity, this Whirlpool model will comfortably accommodate the needs of medium to large households. It can deliver enough water for 5 to 6 people and it can work with both city and well water (provided you have an additional filtration system to take care of harmful contaminants in your well water like bacteria and chemicals).

The system utilizes an ultra-high flow valve that’s 1.25 inches in diameter. Therefore, you can expect maximum water flow to the entire household even when running multiple water-using appliances such as taps and showers simultaneously.

Now, like the Fleck 5600SXT 48,000 grain system above, Whirlpool has several other models identical to this WHES40E model which offer different grain options to allow you to select the ideal capacity for your home.

There’s the Whirlpool WHES30E model with a capacity of 30,000 grains which is the lowest. This particular model can suit families of 1 to 4 people and can treat water hardness levels of up to 95 GPG. It can also remove up to 8 ppm of iron deposits in the water.

The Whirlpool WHESFC Pro Series is the second option and it provides a 31,000-grain capacity which is equally sufficient for families of 1 to 4 people.

Unlike the other models, this is a hybrid system consisting of a water softener and filter, thereby it can remove water hardness and at the same time help clear out contaminants such as chlorine and sediments. It has a hardness removal rating of around 120 GPG and can eliminate up to 3 ppm of water iron.

The third option is the Whirlpool WHES33 model rated at 33,000 grain. This can meet the needs of families of up to 5 people. It can treat a maximum of 105 GPG hardness levels and remove up to 9 ppm of iron from the water.

Control System

The Whirlpool WHES40E features a simple-to-program control panel that includes several helpful customizable functions to allow users to operate and manage the softener with ease.

Although it automatically controls the regeneration frequency, you can override these settings and schedule the regeneration cycle based on your needs.

The control panel has an option where you can set the time it should take before initiating the next regeneration process. It also has a “RECHARGE” button that gives you the option to initiate an immediate recharge and it will display the time remaining to finish the recharge process.

Aside from being able to program the system, the control panel of this Whirlpool softener comes with a low salt indicator light that will flash to alert you when the salt level is low.

This is an essential feature that clears out all the guesswork allowing you to refill the brine tank at the appropriate time to ensure the softener keeps on working efficiently.

There’s also a water flow indicator that shows you when water flows into the system. It’s a useful addition that can as well help reveal possible leaks within your home’s plumbing.

Another commendable thing about this Whirlpool WHES40E control head is that it has a built-in memory that keeps your settings safe for at least a few hours when a power outage occurs. This saves you the trouble of having to reset it because it will resume operation as it should, although, the clock may give an incorrect time in the event of a long power outage.

Installation and Maintenance

Setting up the Whirlpool WHES40E is a fairly easy job as it comes as a single tank and the manufacturer provides a detailed instruction manual that takes you step-by-step through the process.

If you have some basic plumbing skills, you will be able to get it up and running within an hour or two. You will need access to a 110V power outlet with 3 prongs and a drain.

One advantage of having a single tank softener like this Whirlpool WHES40E model is that you don’t have to worry much about the amount of open floor space it will take to install the system.

Combining the brine and mineral tanks into one cabinet translates to a smaller footprint hence it will require less space compared to the dual-tank system. Furthermore, you will have a compact and slightly lighter unit that’s easy to carry and move.

The downside though of a single-tank water softener is potential downtime during regeneration cycles. It’s unlikely to happen with this Whirlpool model, but for lower-end single-tank systems, there’s a slight chance of experiencing some downtime.

Maintaining the WHES40E won’t give you a lot of headaches too because it’s a matter of adding salt into the brine tank each time it’s no longer sufficient.

Whirlpool has even simplified the process with the inclusion of the low salt indicator light which alerts when the salt level drops below the required minimum.

Additionally, the tank is fitted with light that allows you to see through it. As a result, you are able to easily confirm the salt level and ascertain whether you need to add more or not.

The tank itself is a durable, high-density ABS plastic and the whole construction of the unit is NSF certified. Therefore, quality is not an issue and the unit comes standard with a full 1-year warranty on parts and labor.

You can extend this warranty to 2 years by purchasing 3 bottles of Whirlpool’s WHEWSC water softener cleanser. The control head has a 3-year limited warranty while the tank is backed by a 10-years warranty.

If you are after efficiency and outstanding performance, we recommend considering this simple, but effective Whirlpool WHEWSC water softener. It’s a nice choice for homes with high levels of water hardness and iron.

Historical Price Chart

This is one-year-history price chart of the Whirlpool WHES40E Water Softener.

Note: This price chart is provided for reference purpose only.

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Whirlpool WHES40E Water Softener
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