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Essential Series 48,000 Grain Water Softener with Under Sink Reverse Osmosis System + Reusable Glass Water Bottles

Price $609.99 List Price Price $949.99 Save 35%
Availability: In Stock - Free Shipping
  • Helps reduced scale build up in your water appliances and fixtures
  • Soft water extends the life of your water appliances and helps maintain efficiency
  • Convenient bundle of water softener system and under sink point of use reverse osmosis system
  • 5 stage reverse osmosis system provides great tasting refreshing water in every glass
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The Essential Series 48,000 Grain Water Softener with Under Sink Reverse Osmosis System + Glass Water Bottles bundle includes a traditional water softener, 5-Stage reverse osmosis drinking water filter system, and four reusable glass water bottles. The Tier1 Essential Series WS-165-150 features an easy-to-use LCD display showing pertinent operational information. Quick connect fittings on the brine line, drain line, and included power cord, ensure a fast and easy installation. It is not necessary to live with the perils of hard water, such as dry skin, scale build-up, and dull laundry.

The 5-Stage Reverse Osmosis System by Tier1 is the complete package, using 5 stages to deliver up to 50 gallons of filtered water per day, the Tier1 RO5 is an ideal solution to your drinking water needs. Water travels through Sediment and Activated Carbon pre-filter stages, preventing large particles and chlorine from ever making it to the valuable main filter. This treated water then meets the RO membrane, where dissolved metals, minerals, and salts are separated and rejected straight down a separate wastewater drain. This portion of the process captures the nastier contaminants like barium, cadmium, chromium (III and VI), copper, fluoride, lead, mercury, nitrates, nitrites, radium, selenium, and total dissolved solids (TDS). Lastly, the water is polished by a carbon post-filter removing odors, bad tastes, and other hindrances to the perfect drinking/cooking water experience. Once processed, the water is transferred to an automatic shutoff valve equipped storage tank where it waits for you to turn on the tap! This system includes all of the necessary parts: starting filters, membranes, housings, brackets, shut-off valve, saddle valves, tubing, fittings, standard long-reach chrome faucet, and installation instructions.

Tier1 reusable glass bottles are a great and convenient way to store and cool your filtered water. The Tier1 RO5 reverse osmosis system produces clean and delicious tasting filtered water, our reusable bottles ensure it is served as cold as you would like. Simply fill your water bottles and store in the fridge for crisp, chilled water whenever you need it!

Order the Essential Series 48,000 Grain Capacity Water Softener + 5-Stage Reverse Osmosis Drinking Water Filter System and 4 Glass Water Bottles by Tier1 today!

Experience the Tier1 Difference

Tier1 manufactures high-quality filtration and household products. We take creating and maintaining a healthy home seriously. Products must undergo rigorous testing and meet demanding quality expectations in order to earn the Tier1 badge. Every purchase is backed by the Tier1® Guarantee:

  • Guaranteed Fit
  • Guaranteed Quality
  • Guaranteed Price

Our Tier1 Essential Series Water Softener

Grains: 48,000
Mineral Tank Dimensions: 10"" x 54"" (without control valve)
Mineral Tank Dimensions: 10"" x 61.5"" (with control valve)
Brine Tank Dimensions: 15" x 34"
Cubic Feet of Resin in the Mineral Tank: 1.5 cubic feet of Cation Resin 8%
Control Valve: Manual Bypass Valve

Grains of Hardness

When a water softener is referring to 'grains' it's talking about how many grains of hardness it can process before regenerating. Grains of hardness processed depends on how large your household is, as well as how hard your water actually is.

For example, a family of 4 with 20 grains of hardness: Your family of 4 will use approx. 300 gallons of water per day (4 people x 75 gallons per person). Since the water has 20 grains of hardness, you'll need to treat 6,000 grains of hardness per day (300 X 20). You can go about 7-1/2 days before regenerating (45,000/6,000).

Frequently Asked Questions

How much is the Max. Hardness of the Water (in GPG)? During set-up, the customer customizes the regeneration cycle based on their water hardness level

How much is the max. Clear Water Iron Removal (ppm)? An iron filter is recommended for iron levels above 3ppm

Is it Demand Initiated or Timed? The WS-165-150 is demand initiated, the control valve features a water use probe (impeller), which measures water use

How long does the Regeneration Cycle take? Two hours

Will I experience a disruption in water service during the Regeneration Cycle? Yes, there will be a disruption to water service during this time. Most of our customers schedule the Regeneration Cycle for 2:00 AM, ensuring there are no conflicts. If a disruption in water service during the Regeneration Cycle is an issue, select the Tier1 Automatic Bypass Control Valve water softener!

How much salt do I use in the 100L square brine tank? We recommend using no more than three 40 pound bags of water softener salt

What is in the mineral tank? The system arrives to you pre-filled, ready for use with Cation Exchange Resin 8%

Does it have an indicator to notify me about low salt? No

What if my home is plumbed with PEX or CPVC supply tubing? Homes plumbed with PEX or CPVC supply tubing may require the use of compression fittings, such as the Sharkbite® brand. Due to varying sizes and configurations, compression fittings are not included with the water softener. If these fittings are required, they can be purchased for a reasonable price at most hardware stores.

Package Qty4
Used In BrandsTier1
Manufacturer's IdWS-165-150-RO
Operating Pressure (psi)21 - 120
Operating Temperature (°F)40 - 100
Flow Rate (gpm)11.2
Fitting TypeFPT
Fitting Size (inches)3/4 inch

Reduced Contaminants

Installation Guide

User Guide


  1. Please read the complete Tier1 5-Stage Reverse Osmosis System Manual for installation and part assistance.
  2. In addition to our manual, we have also provided a step-by-step installation video for your reference below:

  3. For system programming instructions please see our video below:

  4. For instructions to assist with the Reverse Osmosis System installation please watch below:

  5. When it is time to change your filters, use your filter wrench to unscrew the filter housings. DO NOT use the wrench to tighten the housing sumps because you can damage the o-rings. Please review the below video for a step-by-step guide to changing the filters of your Tier1 RO5:

Reset Instructions