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Water Softener Sizing

There are many and varied choices with regard to sizing and parameters when choosing a point of entry water softener for the home. Which POE filter is ideal for your household is dependent on your family’s needs. A household with 4 children that requires softened water as well as chlorine removal will require a different water filter than a retired person seeking to eliminate limescale.

When it comes to the what size water filter would best suit there are also factors to consider. For a 5 person family using 400 gallons of water every day it would seem that a 32,000 grain softener would be the ideal choice. However in order to get that output the salt setting would have to be set up ineffectively thus making that choice softener incorrect, in order to purchase the correct water softener for your needs it would always be sensible to seek professional advise.


For residential use you will commonly find two types of regeneration variations – Time clock and demand initiated. The time clock water softeners are generally less effective within households and over recent years have tended to become less popular than on demand systems.

In order to install a single meter initiated residential tank water softener you will need to build in some reserve capacity. This is for the purpose of accounting for the set delayed regen time, typically 2am. With an initiated regeneration the softener may be called for a regeneration a day before it is able to actually perform the regeneration this is due to the fact that the softener capacity might be reached at but the regeneration function will actually prevent the regeneration until the next day.

The time frame for regeneration is usually set to simply because this would typically be a low usage point and would lower the usage of hard water during the regeneration time period.

Commercial Water Softeners

The reserve-capacity challenge is actually amplified whenever ascribed to industrial applications. Sporadic water usage within resorts and dinning establishments call out for the use of twin-alternating or even demand-flow methods. Incorporating a complete full day reserve to a single metered industrial water softener might call for a significant portion of the obtainable capability of the water meter. The huge reserve capacity may well end up in everyday regenerations except if the product is significantly large.

Oversized water softeners may well seem like a nice choice, however it may cause channeling as well as additional performance problems. In order to reduce channeling, size any system to flow at the very least 3 gal per minute per sq ft of bed area. This will be roughly 2.3 gal per min for a 12-in.-diameter mineral tank. A 10-cu-ft system employing a 24-in.-diameter mineral tank will have to flow at a minimum amount of around 10 gal per minute in order to limit channeling problems. The average household application usually contains a flow requirement within the 2 to 5 gallon spectrum. This is the reason why an oversized household system will probably endure by efficiency issues because of channeling. A water softener system which is channeling because of low flow rates will commonly be challenging to detect hard water issues simply because it may run out of soft water before the calculated gallon figure is obtained.

Optimum water softener flow rates ought to not surpass 15 gal per min per sq ft of bed area. Within a 9-in.-diameter tank, that is about 6.5 gal per minute and almost 12 gal per min for a 12-in.-diameter mineral tank. Increased flow rates result in an elevated pressure drop, reduced capacity and may also affect the actual resin.

Undersized water softeners are ineffective, operate the actual parts tougher, increase pressure drop plus may most likely fail far sooner. Oversized water softeners are usually wasteful as well as ineffective. Correctly sized water softener systems, particularly single tanks having adaptable reserve capability, twin-alternating or perhaps demand-flow devices, provide the most effective capacity as well as efficiency abilities.

Twin-alternating water softeners in theory regenerate whenever the total capacity associated with a single tank is depleted, instantly sending the stand by tank straight into service. Twin-alternating units are perfect for the majority of applications, particularly those with higher or changing capacity requirements. Momentary pressure drop because of regeneration water demand may lead.

Demand-flow devices get tanks on-line dependent upon changing water flow requirements. A bank involving four units will normally bring one, two or even three units into service when flow requirements necessitate, with a single tank kept in regeneration or standby. These types of water softeners are advantageous with regard to sporadic flow purposes like hotels. make sure that you base your sizing on capability and not on pipe size, It is not uncommon , to implement a water softener system with a 3-in. controller for an application using a 2-in. water pipe.

Brine tanks tend to be sized for lower salt configurations. Make certain the salt and brine capabilities are satisfactory with regard to the regeneration levels needed. Several variables will have to be thought about whenever sizing a POE conditioner or purification system. Seek out instruction when necessary.