Frequently Asked Questions

How do OneFlow+ and OneFlow Systems prevent scale?

OneFlow+ and OneFlow Systems prevent what is called "hard" scale – the destructive scale that sticks to pipes, valves and other system components – by using Template Assisted Crystallization (TAC) technology. How does it work? Each bead is covered with imperfections called templates that attract these hardness minerals and transform them into harmless, inactive microscopic crystal particles often referred to as "soft" scale. As a result, these particles break off and stay suspended in the water, flowing freely through the system, unable to stick to plumbing imperfections. These suspended microscopic crystal particles have a greatly reduced ability to react negatively and form scale compared to untreated hard water. Most importantly, unlike “hard” scale, "soft" scale particles can be easily washed and wiped away without the use of caustic chemicals.

Independent scientific testing has confirmed that TAC technology provides scale reduction of 95+%. Testing was conducted under protocol based on DVGW W512 test to access control of scale formation. Watch the OneFlow+ video to learn more or read the Arizona State University Study on Alternatives to Ion Exchange Softeners.

How do I know if there is scale in my water?

Reduced water pressure can be one of the first signals that your pipes have scale build-up. As scale forms over time, it reduces the inner diameter of pipes and elbows, ultimately leading to restrictions in flow rate and pressure loss problems in systems. Malfunctioning appliances can also be a warning sign. Scale often becomes encrusted on internal moving parts of valves and components, affecting their intended purpose or worse, causing safety failures. Increased energy costs is another clue that your plumbing and heating systems may have scale. Heating elements in a boiler or hot water tank can become coated with scale, reducing the system efficiency and increasing operating costs for homeowners. Watch and Read.

What is OneFlow technology?

OneFlow technology is an environmentally friendly alternative to water softening or any other treatment device designed to address scale. OneFlow is an anti-scaling water treatment technology designed to protect plumbing components, pipes, fixtures, valves, fittings, hot tanks, etc. from the negative effects typically caused by water hardness.

How does OneFlow technology differ from a Water Softener?

OneFlow technology uses a specially designed media to convert the dissolved primary hardness mineral (calcium carbonate) into a relatively insoluble microscopic crystal so that it can not cause harm downstream. A water softener, on the other hand, uses the principles of “ion exchange” to remove calcium and magnesium ions from water while replacing them with sodium ions. A water softener requires a control valve, backwashing, drain line, regeneration and a brine tank to store salt. OneFlow technology requires nothing but an inlet and outlet connection.

How much will OneFlow+ save annually?

Based on a 4-person home using 75 gallons per person daily, OneFlow+ can save the average household up to $300 annually because there's no need for the salt replacement and electricity as compared to the requirements of traditional water softeners. Learn about all the benefits of OneFlow+.

Does OneFlow technology remove important minerals in water?  

No. OneFlow technology preserves the beneficial mineral content while preventing the possible negative scale formation associated with these minerals. By rendering the hardness minerals harmless while still keeping them present, you truly get the best of both worlds. Other treatment methods fall short. In a 2005, a report on Nutrients in Drinking Water, the World Health Organization writes…“We conclude that hard water is good because it contains nutrients valuable in themselves…To minimize heart disease risk, the ideal water should contain sufficient calcium and magnesium to be moderately hard.”

Does OneFlow technology remove other chemicals found in city water, such as Fluoride and Chlorine?

No. We all know the important role that chlorine (or chloramine) plays in a public water system. It assures the delivery of safe potable water to every customer. Fluoride is commonly added to municipal water systems because of the proven benefits it possesses in helping to develop children’s teeth and to prevent tooth decay. OneFlow media, by itself, does not remove either of these additives from water. However, some OneFlow cartridge systems contain carbon-based media to remove and reduce chlorine in Food Service and other Point-Of-Use applications. Professionals can contact their local authorized OneFlow Rep for the system most appropriate for their specific application.

Does the media in OneFlow+ or a OneFlow System need to be replaced?

Yes. OneFlow+ Carbon Block Cartridge for drinking water filtration should be replaced annually. The OneFlow+ Scale Prevention Cartridge should be replaced every three years. The high capacity cartridges can be easily changed with the included multifunction tool. When you register the product, you will get FREE reminders when it’s time to replace the cartridges!

OneFlow Cartridge-Based Systems should be replaced once a year. OneFlow Tank-Based Systems require media replacement every three years. Systems should be installed with this in mind. Isolation Valves with a by-pass loop are recommended for most commercial applications so the tank(s) can be taken off-line for media replacement. Most filter housing based systems require cartridge replacement every year, while tankless water heater OneFlow systems require cartridge replacement every two years. Please refer to and follow the instructions in the Installation, Operation & Maintenance Manual included with the OneFlow system.

What are the ongoing maintenance costs and considerations for OneFlow technology?

One of the great benefits of the OneFlow technology is the dramatically reduced maintenance requirements. Other than the planned media replacement (drinking water filters and cartridges), there is nothing else required.

What are some of the ideal applications for OneFlow technology?

OneFlow+ is ideal for single-family homes. OneFlow Systems can be virtually applied to residential and commercial buildings when scale reduction or scale removal from water hardness is required or desirable. Professional applications include: Hotels, Restaurants, Apartment Buildings, Office Buildings, Condo Complexes, Boilers, Irrigation Systems, Humidifiers, Distillers, Residential/Light Commercial Blow Down Type Steam Generators, Solar Heating Systems, Tankless Water Heaters, RO Pre-Treatment, Misting Systems, Tract Homes Builders, Laundromats and numerous Food Service applications are all ideal applications for a OneFlow System.

What factors may effect OneFlow's system performance?

Water chemistry and peak flow rate are the guidelines used to assure optimal system performance. Most municipally treated (city) water falls well within our performance guidelines to ensure scale control results. However, there are chemistry limitations related to possible foulants and interference ions. Water known to contain visible dirt and debris must be strained using a wye-pattern strainer or equivalent (100 mesh) before the OneFlow System tank within the complete configuration. More details are available on the product data sheets and operating manuals. As with any water treatment technology, correct sizing of the system is important to ensure proper performance. However, OneFlow technology is more forgiving of flow variations and unplanned peaks than a conventional water softener.

Are there any application limitations to OneFlow technology?

Untreated well water may pose a limitation to OneFlow technology due to the unknown chemistry it often possesses. High hardness is never a problem for OneFlow technology, but with well water, hardness minerals are often accompanied by other contaminants with levels outside of our operating guidelines. Additionally, closed-loop systems that do not offer a “blow-down” or “flush valve” are not recommended because the micro-crystals need to exit the system.

How easy is it for home owners to install OneFlow+?

Home owners can follow the step-by-step instructions included with the product or watch the OneFlow+ Installation Video video. Other than needing plumber's tape, "in" port and "out" port push fittings, and pipe to connect to the water supply, OneFlow+ comes with all of the parts needed. OneFlow+ is light weight (15 lbs.) and compact in size (10 in. x 10 in. x 18 in).

How easy is it for professionals to install a OneFlow System?

For anyone who has ever installed a Water Pressure Reducing Valve or a Backflow Preventer, installation of a OneFlow System will be relatively easy. Tank Systems offer “sweat” or “plastic MPT” connection sizes in 3/4 in., 1 in. and 1-1/4 in. Larger tanks offer single socket or manifold connections in 2 in. sizes. Several OneFlow System installation accessories are offered to accommodate most applications. OneFlow Systems are compact allowing for easy installation when space is limited, and they are light weight making it easy for the installer to transport with nothing more than a hand truck.

Why is OneFlow technology a “Green" technology?

OneFlow technology is truly a “Green product” because it saves water and energy in the following ways:

  1. Reduces Energy Consumption – OneFlow technology uses no electricity and reduces energy consumption by keeping heat transfer surfaces free of energy-robbing scale formation.
  2. Reduces Chemical or Raw Material Consumption – OneFlow technology requires no chemicals or significant ongoing consumable (salt, as an example)
  3. Reduces Waste Water Discharge and Water Consumption – Because OneFlow technology does not discharge or require backwashing, it meets both objectives
  4. Reduces Space Requirements – OneFlow systems use approximately 75% less floor space than water softeners. OneFlow+ can be mounted to a wall.
  5. Retains Natural Benefits in the Water – OneFlow technology retains minerals, calcium, magnesium, and potassium.