Waterpik SM-421 Original 4-Mode Massage Showerhead Review

Waterpik SM-421 Original 4-Mode Massage Showerhead
  • Editor Rating

  • Rated 4 stars
  • Excellent

Review Summary:

With loads of great features, including 4 different spray settings and a wide spray area, it is no wonder why it is such an incredibly popular choice. Even though this showerhead may look a bit plain, it is extremely practical and easy to install once you get it out of the package. The powerful jets in this showerhead make rinsing off soap, shampoo, and conditioner much easier, so you can save a couple minutes in the morning each day. There are lots of positive online reviews of this showerhead, which is definitely a good sign overall. If you want to buy a new showerhead for your bathroom, this one is definitely a viable option.

The Waterpik SM-421 is both an inexpensive and practical investment for those who want the ability to customize their shower experience every single day. This showerhead has a lot to offer and is priced at around $15 online, making it ideal for those who are looking for a true bargain.

If you are planning on remodeling your bathroom or just need a new showerhead that offers more options, you will want to learn more about this one and all of its great features.


  • 4 massage settings: This showerhead has 4 different spray pattern settings that will provide you with a relaxing massage while getting clean at the same time. The different spray patterns that you will have to choose from with this showerhead include Spray Pulse, Turbo Pulse, regular Pulse, and Outside Spray.
  • Full body coverage: You will find that this showerhead has a wide spray area, so you will be able to get full body coverage when you are in the shower.
  • 2.5 GPM flow rate: The 2.5 gpm (gallons per minute) flow rate ensures steady and strong water pressure for easy and efficient rinsing.
  • 5-year limited warranty: The 5-year warranty that this showerhead comes with covers certain parts of the showerhead for a period of five years.


  • Multiple spray settings: The numerous spray settings that this showerhead offers is definitely one of the best things about it. These different modes allow you to choose what type of shower experience you want to have each time you get in.
  • Wide coverage area: The wide coverage area that this showerhead delivers makes it particularly ideal for those who like to be drenched when taking a shower. This feature also makes it easier to rinse off faster and therefore save time in the morning.
  • Inexpensive: Priced at just under $15 online, this showerhead is an inexpensive option for those who are looking to buy a new showerhead on a budget.


  • Low water pressure: Those who have a low pressure system at home or in an apartment might find that this showerhead may not provide adequate water pressure, though many people find it perfectly acceptable.
  • Fixed design: The fact that this showerhead has a fixed-mount design could be a problem for those who prefer to have a handheld one.

What Other Customers Are Saying

Customers who have purchased this showerhead and reviewed it online have mixed things to say about it, but many of their comments are largely positive.

Many customers have given this showerhead four or five stars, commenting that it has a solid overall design and the variety of spray settings are particularly nice because it allows every person in the household to get exactly what they want out of their time in the shower.

Some customers have claimed that the water pressure that this showerhead delivers is a bit weak, but most of them have low pressure systems.


The Waterpik SM-421 4-mode massage showerhead is a great investment to make for those who are remodeling their bathrooms and want to enhance their overall shower experience. The price of this particular showerhead is low and it is made by Waterpik, which is a highly reputable brand name that many people trust.

Waterpik Original 4 Mode Massage Showerhead

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While the fixed-mount design of this showerhead may not appeal to those who prefer handheld, it is still very much worth considering because of its other good features. The water pressure delivered by this showerhead is perfectly adequate and the spray settings work wonderfully.