Return on Investment
The Carbon Trust estimates that just 1mm of limescale in heating equipment increases energy consumption by up to 7%, with 6mm increasing consumption by as much as 40%. It is not at all uncommon for boilers and heat exchangers in hard water areas to have at least this amount of build-up, leading to significantly increased utility bills.
The ROI/Capital Payback for this trial was based upon three key areas of concern for the hotel (energy consumption, equipment repairs and Legionella control), and calculated based upon figures supplied by them. Considering these costs, and with the option of either purchasing the equipment or taking it on a monthly service contract, the capital payback and ongoing ROI models for this site would be:
Payback Month 13 onwards, saving approx. £44,000 per annum ongoing
Monthly Service Plan
Payback Month 7 onwards, saving approx. £30,000 per annum ongoing
As well as significant cost savings and the other benefits detailed above (improved legionella control, equipment easier to clean, etc), this hotel will achieve the following environmental benefits.
- Extended life of water related equipment such as pumps, boilers, heat exchangers and improved efficiency of heating and cooling equipment
- Reduced failures in equipment due to scale and corrosion, meaning decreased engineer visits and reduction in the demand for spare parts, both of which carry direct and indirect (manufacturing and supply chain) increases to the hotel’s carbon footprint
- Improved water efficiency
- Reduced detergent and chemical use
This trial was deemed to be extremely successful by all involved and demonstrated conclusively that the IntegroTM system works to remove existing limescale and prevent future formation throughout the hot & cold water systems, critical equipment and appliances. As well as offering a significant return on investment, the hotel is experiencing additional benefits such as improved guest experience and having a more positive impact on the environment.
We installed the Integro™ system in April 2021, a very quick install with no disruption to the hotel operation. Within a month we noticed the reduction in scale in the rack dishwasher and ice machines. The quarterly cleaning of the shower heads and taps as part of the Legionella prevention programme has been noticeably easier. We have seen an improvement in hot water temperature and pressure indicating the removal of scale build-up in the boilers and heat exchangers. Sidon Water has been easy to work with every step of the way resulting in an extremely successful project.
Cluster Director of Engineering, South West and Wales