On The Go Portable Water Softener Reviews

The On The Go OTG4-DBLSOFT Portable 16,000 Grain water softener is customized specifically for RV enthusiasts and those looking for a portable water softener.

One of the attractive things about this softener is that while it’s a very compact and portable unit, it provides almost the same capacity as many standard water softeners in the market.

What’s more, it comes with some nice feature that makes it a good fit for those who want a softener they can take with them anywhere. There are two other options offered by the On The Go which are the OTG3NTP3M and OTG3NTP1DS and we will look at them too in this review.

Softening Capability

Using ion exchange, the On The Go OTG4-DBLSOFT removes up to 16,000 grains of hardness from your water. It requires two 750g boxes of standard table salt to soften the water that can last up to 40 days.

The regeneration process is done manually and takes place at a reduced flow rate which only takes less than 30 minutes to run through its cycle. Consider this process takes up to 40-45 minutes with other standard models, meaning there is a significant decrease in the amount of time you have to do without water supply.

The hardness of water leaving the system requires a weekly test using the hardness test strip provided with the unit until an average interval is achieved. In most cases, the average period between regeneration is approximately one month, though, depending on the water hardness and volume used it could be as little as one to two weeks.


The OTG4-DBLSOFT water softener has twice the capacity of the standard OTG3NTP3M portable water softener for extended regeneration cycle intervals. The double standard principle can soften 500 up to 1,600 gallons of water before needing regeneration.

This makes it sufficient for a small and medium-sized family and still work effectively for a large family with low grain per gallon hard water concentration.

The water pressure and flow rate of this unit can only be determined by the water supply system. Although its head is designed to withstand a maximum pressure of 125 psi, it still manages to maintain a high flow rate with a very minimal drop in pressure.

Installation and Maintenance

The OTG4-DBLSOFT softener comes with a DIY simple 5-step setup manual with no tools or electricity required to install it. At only 22” high and 9.5” diameter, it’s compact enough to fit in the smallest space available allowing you to maximize on your space.

The 360-degree swivel head on the system allows easy and simple connection and disconnection of the inlet hose. The inlet high-flow shut-off control valve slows the rinsing of water during regeneration. As a result, there is better water quality supply and a more softening capability.

It also features a back-flush adapter to allow reverse connection when needed. Note that, back-flushing should be executed after every 3 months, nonetheless if done together with regenerating flushing comes first.

The unit comes pre-charged with salt and equipped with high-grade premium resin softener medium that can last relatively 5 to 8 years when used appropriately. The large opening on the top of the system makes salt refill easier without wastage or spillage.

Designed for portability, the unit only weighs 32 lbs and includes an easy to carry handle on top making it indispensable to any boat or RV owner. Since you will mostly use the softener on the go, you can easily cap and plug it to prevent leaking. It also features a full cradle base for secure stability.

There’s very little to hate about this On The GO softener. The softening capability, capacity, and overall performance are to the standards of any top portable water softening system. Compared to OTG3NTP3M and OTG3NTP1DS models, the OTG4-DBLSOFT really stands out, especially because it’s capable of softening 30% more water than the other two models.

If you are a boat owner, have an RV or you are just looking for a good, portable water softener that you can rely on to give you soft water whenever you want, then you may want to consider the  On The Go OTG4-DBLSOFT water softener.


  • Relatively high capacity of 1600 gallons
  • Easy to install and maintain
  • Uses standard table salt for regeneration
  • Compact, stable and highly portable
  • Has a 360 ̊ swivel head for easy hose setup
  • Prevents limescale and rust stains buildup
  • Does not affect water pressure
  • Large opening for salt addition
  • Includes water hardness strips for effectiveness
  • Takes 30 minutes to regenerate


  • The plastic shut-off valve is not that strong

Product Overview

ProductOn The Go Portable Water Softener Reviews
BrandOn The Go
Rating4.8 out of 5 stars (More than 352 reviews)
Recommended price279.90 USD (Check the latest price at Amazon.com)

Product Specification

Brine tankN/A
Flow RateN/A
Dimensions23.4 x 11 x 10.8 inches
Weight32 pounds
Features– Compact size for RV

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On The Go Portable Water Softener Reviews