Review: GE GXSH45V 45,000-Grain Water Softener System

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The GE model GXSH45V is a 45,100-grain water softener with a maximum hardness capacity of 160 grains per gallon.

160 gpg water is considered extremely hard and almost never occurs, so it’s highly unlikely that this softener will not be able to handle your hardness level.

The system’s service flow rate is 9.5 gallons per minute, which is ideal for families with around 4 to 5 people.

Interested to learn more?



Flow Rate:9.5 gpm
Capacity:45,100 Grains
# of People:Up to 5
Metered Regen:

Our Rating

GE GXSH45V 45,000-Grain Water Softener – Key Features

Using the GE GXSH45V, whether you are on a municipal supply or a private well does not matter – at least not from a softening standpoint.

It does make a difference, however, when you have high iron content: The maximum iron removal capacity is 10 parts per million. Ferrous (clear-water) iron, mind you.

Simply add 5 grains to your hardness settings for every 1 ppm of iron.

Ferric (red-water) iron and iron bacteria will not be removed. The same applies to colloidal iron, although the treatment may sometimes improve the situation.

You should also be aware that the GXSH45V does not come with a built-in sediment filter.

So if there’s too much sediment in your water, which can be the case for well systems, the softener might get damaged.

Other restrictions are microbiologically unsafe water without adequate disinfection and tap water that contains excessive chlorine above 2 ppm.

Especially the latter may lead to a reduced life of the softening resin, so consider purchasing a POE filter system for chlorine reduction.

Min/max water pressure: 20 psi – 125 psi.

GXSH45V Pros

There are a couple of benefits that the GXSH45V water softener provides that we wanted to highlight:

  • The SmartSoft technology allows the system to monitor your water usage and predict future demand, so you never run out of softened water. It also helps to reduce salt and water consumption during regeneration by up to 34 (35) percent.
  • For added convenience, the display shows the remaining number of days until the salt reservoir will be empty. There also is a low-salt indicator light with a beeper – one less thing to worry about!
  • The GXSH45V conforms to NSF International Standard 44 for the softening claims. It’s also tested and certified against CSA B483.1 which is a Canadian standard for the reduction or inactivation of harmful substances.
  • Warranty: During the limited one-year warranty, GE will replace any system parts which fail due to defect in material or workmanship. GE also takes care of all labor and related services. Furthermore, the electronic monitor is covered by an additional three-year limited warranty. The brine and resin tank are covered for a ten-year period.

The GE GXSH45V – learn more on

Installation + Startup Instructions

If there is one softener that you will be able to install in a do-it-yourself manner, it’s the GE GXSH45V.

The single-tank design makes the setup a lot easier many customers confirmed. It also saves you quite some space.

If you want to know what to expect, take a look at the following instructions:

If a softener is not equipped with a bypass valve, we recommend you provide for one for ease of maintenance. Also, make sure to comply with local plumbing codes.

Location, Location, Location

This one is key: You need to make sure that you choose a location for your softener where freezing temperatures do not occur. Otherwise, it voids the warranty. Also avoid installing in direct sunlight.

Of course, to soften all the water in your home, you should place the unit as close to the main water inlet as possible and upstream of all plumbing connections.

A nearby drain and an electrical outlet are required.


  1. Turn off the main water supply.
  2. Open all faucets in your home to drain the remaining water.
  3. Install the brine tank overflow grommet and elbow in the back of the brine tank.
  4. Remove the unit’s top cover.
  5. Remove the clips from the bypass valve inlet and outlet ports to check for debris. Also check that the turbine spins freely.
  6. Coat O-rings with silicone grease.
  7. Install the bypass valve into the softener valve. Push as far as possible. Secure with two large holdings clips.
  8. Put the softener into your desired location.
  9. Connect the inlet and outlet ports of the bypass valve to the main water pipe. Use Teflon tape on all external pipe threads and be careful not to cross-thread when turning pipe fittings onto plastic fittings.
  10. Push the drain port elbow into the valve drain port. Secure with clip.
  11. In order to install the valve drain hose, connect the 3/8″drain line to the valve drain fitting. Secure with hose clamp.
  12. Route the drain hose to a suitable drain and secure it.
  13. Next install the brine tank overflow hose by connecting the 3/8″ drain line to the brine tank overflow elbow. Secure with clamp.
  14. Route the hose to the drain.
  15. Open at least 2 nearby cold soft water faucets.
  16. Put softener into bypass.
  17. Slowly turn on the main water supply.
  18. Wait until the flow has steadied.
  19. Place the bypass valve in service position (see manual for this step).
  20. Wait for a couple of minutes before opening a hot water faucet to release any remaining air. Close the faucet.
  21. Close all cold soft water faucets.
  22. Check for leaks.
  23. Fill 3 gallons of water into the brine tank.
  24. Fill brine tank with salt.
  25. Plug the softener into an electrical outlet.
  26. Replace the top cover.
  27. Replace the salt cover.
  28. Lastly, sanitize the whole system according to the manual.


The Package (Parts)

  • Resin + brine tank, 22″ x 48″ x 14″ (D x H x W), 230 lbs salt capacity
  • Bypass valve
  • 12 ft. drain hose
  • Installation kit
    • Ground clamp kit
    • Clips
    • Installation adaptors
    • Hose clamps
    • Adaptor elbow
    • Grommet
    • O-rings
    • Drain fitting
    • Drain clip
  • Standard mesh resin, 1.25 sc. ft.

Programming, Settings & Maintenance

Like with most other salt-based water softeners, there is not much you have to do in regards to programming before you can use the GE GXSH45V 45,100-grain system.

Simply set the time of day, your water hardness number, preferred recharge starting time and the brine tank salt level. The unit will do the rest.

If you want to learn about all the optional control features, make sure to check out the manual (see below).

For system maintenance, check the salt storage level on a regular basis and refill if need be. You might also have to do some occasional cleaning.


You can download the official manual here: Manual

GXSH45V Cons

Nothing out of the ordinary hear. One customer complained about receiving damaged parts.

For another user, the softener died within the second year after installation. The customer service reportedly wasn’t very helpful.

GE GXSH45V Review: Our Verdict + Best for

A simple to install, program and operate water softener with great looks and overall good quality & customer feedback. The fact that it uses very little salt and water makes us even more happy. Our verdict: 4.0 stars.

The GE GXSH45V is best for large homes with extreme hardness levels (up to 160 gpg).

FYI: This softener is available on Amazon but might be priced considerably higher compared to other online retailers.

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This completes our GE GXSH45V review. If you have any questions, please don’t hesitate to leave a comment below!

About the Author Gene Fitzgerald

Gene Fitzgerald has been with BOS since the very beginning. She is head of content creation and has fully immersed herself into the home water treatment industry only to become an expert herself. Outside of BOS, Gene loves reading books on philosophy & social issues, making music, and hiking.
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