How to choose the size of water softeners?
In general,for a family of 3 or 4,water softener of 30000grains is good enough;softener of 40000~45000grains is suitable for a family of 5~7。grains is the unit of water hardness。In Waterloo region the hardness of water is 20~25grains/gallon in Waterloo City,25~30grains/gallon in Kitchener City,30grains/gallon in Cambridge.1 gallon=3.78 litre,1 grain/gallon=17ppm。Let’s say the hardness is 25grain/gallon.For a softener of 30000grain,30000grain÷25grain/gallon=1200gallon; 1200gallon-200gallon (reserve)=1000gallon; 1000gallon×3.78=3780L;3780L÷600L/day(3 persons)=6.3 days;3780L÷800L/day(4 persons)=4.725 days.That’s recommended to regenerate the softener every 5 to 7 days. For a softener of 40000grains,we can use the same method to calculate its capacity is 6048L,6048L÷1000L/day(5 persons)=6 days.If you choose the softener too small for your family,then the softener regenerates too often and wastes water;on the other hand,if the softener is too large for your family,it’s not economical.The be
