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1-Stage Whole House Scale Reduction System

Product Code: 20315

For providing whole house water filtration with double housing for larger volumes. Reduces both scale and sediment (greater than 10 microns) to provide clearer water. Easy to install. Full installation instructions provided.

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H x L x W: 340 x 130 x 140mm. Cartridges should be replaced every 12 months for effective operation.

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1-Stage Whole House Scale Reduction System Instruction Manual



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Rated 4 out of 5 by Excellent scale inhibitor This must be the best value, longest-life phosphor-dosing scale inhibitor on the market. The unit contains a large quantity of dosing crystals which can last for years: Even when they're fitted on the cold supply to the whole house (except the kitchen sink) most of the mass of crystals is still going from ones I've fitted 5 years ago. When fitted to e.g. an electrically-heated shower they should last practically forever. Fitting is slightly fiddly: it can be hard to get good, secure fixings for the 4 closely-spaced screw holes into less than perfect walls (e.g. old crumbly bricks) and the water connections, involving 3/4" BSP male x male adapters which screw into the housing, are a bit clunky and add to the size of the unit which can be an issue when trying to fit it into confined spaces. (Don't try to use a fitting with a 3/4" male thread in place of the plastic adapters: it is surprisingly easy to cross-thread them and strip the thread in the adapter housing!) Flexible bath tap connectors (with 3/4" threads) can be used. Incidentally the check valve supplied with the kit is for compliance with water regs: since the inhibitor adds a minute amount of chemical to the water, and even though the chemical is food grade, the water is considered to be no longer fluid category 1 - wholesome water - and must be prevented - by the check valve - from getting back into the water mains. If there is another check valve upstream of the inhibitor (e.g. at the incoming main) that will do instead. 14 Dec 2013
Rated 1 out of 5 by Scale protection This is a good filter product idea but being a 10" housing and the type of media being used will not be the best solution for a whole house application or provide the right level of scale prevention. 3 Dec 2012
  • 2016-02-05 T06:08:59.051-06:00
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Brand BWT
Manufacturer Guarantee 1 years
Pack Size 1
Product Depth 120 mm
Product Height 320 mm
Product Length 320 mm
Product Type 1-Stage Whole House Scale Reduction System
Product Width 120 mm
Total Product Weight 2.75 kg