On-Demand (Tankless) Water Heaters
Preventing Limescale in On-Demand (Tankless) Water Heaters
Protecting Combi Boilers and On-Demand Water Heaters from Scale Build-Up
On-demand (tankless) water heaters, known in the UK as combi boilers, provide instant hot water across a range of industries. However, their integrated plate heat exchangers are highly susceptible to limescale build-up, which can significantly reduce efficiency, increase energy consumption, and lead to costly breakdowns. The Integro™ technology offers a proven, chemical-free solution for preventing scale formation and restoring system performance.

The Impact of Limescale on On-Demand Water Heaters
Limescale is a persistent problem in hard water areas, forming when dissolved minerals precipitate onto heated surfaces. In on-demand water heaters, where water is constantly being heated as it flows through the system, scale accumulates rapidly, leading to:
- Reduced Heat Transfer Efficiency – Limescale acts as an insulating barrier, preventing efficient heat exchange and increasing energy usage.
- Frequent Maintenance and Downtime – Descaling becomes a necessity, leading to costly servicing and operational disruptions.
- Blockages and Overheating – Excessive limescale can cause flow restrictions within plate heat exchangers, leading to overheating, reduced system performance, and eventual failure.
- Higher Energy Consumption – Even a small amount of scale can force the system to work harder, significantly raising operating costs.
- Shortened Equipment Lifespan – Scale build-up accelerates wear and tear, increasing the risk of breakdowns and early replacement.
- Inconsistent Water Temperatures – Scale deposits can lead to erratic temperature fluctuations, affecting operational efficiency and user experience in industries reliant on consistent hot water supply.
How Integro™ Solves the Problem
The Integro™ technology provides a sustainable and maintenance-free solution to limescale, ensuring on-demand water heaters operate efficiently for longer. Unlike traditional chemical-based treatments or softeners, which require ongoing replenishment and maintenance, Integro™ offers a one-time installation with long-term results.
Improves Energy Efficiency
A clean heat exchanger maximises heat transfer, reducing energy costs and ensuring optimal performance.
Extends Equipment Lifespan
By eliminating limescale-related damage, Integro™ helps protect key components, reducing breakdowns and replacement costs.
Prevents Scale Formation
Integro™ alters the behaviour of dissolved minerals in the water, preventing them from adhering to internal surfaces.
Removes Existing Limescale
Over time, it naturally dissolves built-up deposits, restoring heat exchanger efficiency without chemicals or system downtime.
Non-Intrusive and Chemical-Free
Unlike conventional water treatment solutions, Integro™ does not require salt, chemicals, or additional consumables, making it an eco-friendly and cost-effective solution.
Works Across a Wide Range of Water Hardness Levels
Whether in moderate or extremely hard water areas, Integro™ ensures effective scale prevention without the need for ongoing adjustments.
Benefits for Commercial and Industrial Applications
Tankless water heaters are widely used in industries that require a constant and reliable supply of hot water. Implementing Integro™ provides:
- Significant Cost Savings – Lower energy consumption and reduced maintenance expenses.
- Environmentally Friendly Operation – A chemical-free solution that reduces energy waste and extends equipment life.
- Increased Reliability – Fewer breakdowns and reduced downtime for essential hot water systems.
- Enhanced Operational Efficiency – Preventing limescale build-up ensures consistent water temperatures and reliable performance, critical in sectors such as hospitality, healthcare, and food production.
For businesses reliant on on-demand water heating, Integro™ offers an effective and long-term solution to the challenges of limescale. Ensure your system remains efficient, cost-effective, and reliable with proven scale prevention technology.
Case Studies on Tankless Water Heaters
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