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🏠 Founder-led. Nationally focused.
Enter four things. Get an honest annual cost for your specific household — and a realistic estimate of what a softener would save you.
Numbers based on Thames Water hardness data and average UK appliance lifecycle costs. Your actual figures will vary – book a free home survey for a personalised quote.
The calculator combines four inputs to estimate your annual cost of hard water: your postcode (which gives us your local hardness reading from Thames Water), household size, number of bathrooms, and boiler age. It then estimates your annual saving with a softener installed.
Live Thames Water data gives us your actual hardness in ppm. Oxfordshire averages 300+.
Larger households use more hot water — and pay more in boiler scale damage and detergent waste.
More bathrooms = more taps, showers, glass surfaces accumulating limescale. Each adds to the annual cost.
Older boilers have more scale build-up. Younger boilers have more future damage to prevent — both add cost.
Yours will vary – the calculator above gives you your personal estimate
3-bed semi, 2 bathrooms, 6-year-old combi boiler
Purer Aqua install (Standard)
Annual saving with softener
2-bed terrace, 1 bathroom, new boiler
Purer Aqua install (Standard)
4-bed detached, 3 bathrooms, 8-year-old boiler
Purer Aqua install (Standard)
Figures based on Thames Water hardness data and average household consumption. Not based on individual surveys.