All Case Studies Water Safety & Hygiene

FM Mattsson

Automated hygienic flushing — lower costs and stronger Legionella control

−93%
Annual Cost per Mixer
Automated
Hygienic Flushing
Every flush
Flush Documentation

Overview

Replacing manual flushing routines with automated hygienic flushing on connected Tronic WMS mixers cuts the annual cost per mixer from 2,165 SEK to 156 SEK — while property owners gain continuous, documented Legionella prevention and a dashboard that follows up savings and sustainability effects.

The Challenge

Preventing Legionella requires taps and showers that are rarely used to be flushed regularly. Done manually, staff have to visit every outlet on a schedule — a routine that is costly, depends on people being available, is hard to document, and leaves a risk whenever a flush is missed.

The Solution

With FM Mattsson Tronic WMS mixers connected to AssetBook, hygienic flushing runs automatically. The result is three distinct values: lower operating costs, better Legionella prevention and control, and clear insights into how the water installation performs.

01

Savings from automated hygienic flushing

Automated hygienic flushing replaces the manual routine of walking to every outlet. The annual cost per mixer drops from 2,165 SEK to 156 SEK — a 93% reduction. The saving comes from automating the flushing routine itself, not from the choice of platform.

  • No staff time spent on manual flushing rounds
  • Flushing runs on schedule regardless of staff availability
Annual cost per mixer −93%
Manual flushing routines 2,165 SEK
Automated hygienic flushing 156 SEK

Annual cost per Tronic WMS mixer: manual flushing routines vs automated hygienic flushing.

02

Legionella prevention and better control

Outlets that are not used are flushed automatically on schedule, keeping the water moving and reducing the risk of Legionella growth. Every flush is logged, so property owners can show that the routine has actually been carried out.

  • Automated hygienic flushing of rarely used outlets
  • Every flush logged and documented for follow-up and inspections
  • Alerts when an outlet reports a fault
  • Scalding prevention and remote flushing when needed
03

Insights and visualisation

The AssetBook dashboard turns every activation into clear insights. Water and energy used are shown next to what has been saved, together with CO₂e, cost savings, savings rate, and the status of every connected mixer — so the effects can be followed up month by month.

  • Water, energy, and CO₂e — used versus saved
  • Cost savings and savings rate at a glance
  • Status overview of every connected mixer
  • Full activation log per outlet
Illustrative view — example figures, not customer data.

Results

  • Annual cost per mixer reduced from 2,165 SEK to 156 SEK
  • No staff dependency for flushing routines
  • Continuous, automated Legionella prevention
  • Every flush documented for follow-up and inspections
  • Savings and sustainability effects visualised in one dashboard
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