Below you’ll find answers to some of the questions we’re most often asked by our commercial clients.
Whether you’re researching options or ready to move forward, these insights are designed to help you
make informed decisions about your project.
Commercial Frequently Asked Questions
Engineers, specifiers, and FM teams: these FAQs explore how Halcyan’s passive water conditioning technology delivers measurable energy and carbon savings by preventing limescale on heating elements, without the space, drainage, or maintenance demands of traditional systems.
How does limescale actually waste energy in my systems?
Limescale forms on heating elements, creating an insulating barrier that dramatically reduces heat transfer. Just 1 mm of scale on heating elements can increase energy use by up to 7–10% — and that’s the bare minimum. In most hard water areas, deposits are far thicker, meaning energy waste (and the opportunity for savings) is far greater. Elsewhere in the system, limescale still causes costly damage — restricting flow, blocking valves, and wearing out fixtures — but the direct energy penalty happens where water meets heat.
Is Halcyan suitable for retrofit as well as new build?
Yes. Halcyan is ideal for retrofit and new build projects. It installs directly in-line and requires no additional space, no drainage, no earthing, and no special fittings. That makes it an exceptionally flexible and specification-friendly solution, even in tight or complex plantrooms. In retrofit, it progressively clears existing scale; in new build, it helps keep systems performing to design efficiency from day one.
What’s the lifespan and maintenance profile?
Each unit is engineered for 30+ years of continuous service with zero maintenance. No salt bags, no chemical drums, no power supplies, no drainage connection, and no service contracts. That means simpler design, lower installation cost, and a lighter load for facilities and maintenance teams — fewer manual handling risks and fewer callouts.
Where is Halcyan already deployed?
Halcyan systems protect assets for clients including Royal Bank of Scotland, Vodafone, Rio Tinto, Standard Chartered Bank, and numerous universities, hospitals, housing associations, and hospitality groups. Our technology is proven across commercial buildings, social housing, healthcare, manufacturing, and education — and the same core solution also benefits residential users.
How long does installation take and what sizes are available?
Domestic installations typically take under an hour. Commercial installations vary with pipe size and access but are quick, simple in-line fits — with no need for drainage or electrical connections. The range covers approximately 5 L/min to 7000 L/min, supporting everything from small properties to major industrial applications.
How does Halcyan support asset life, OPEX, and design simplicity?
By preventing and removing limescale, Halcyan protects heat exchangers, valves, pumps, and fixtures, reducing unplanned maintenance and extending asset life. For design engineers, it simplifies the specification and design process, removing the need for softener tanks, drains, electrical feeds, and backwash provisions — lowering plant cost, installation time, and long-term OPEX. It’s a rare combination: high performance, minimal design complexity, and true sustainability.
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Solve your hard water limescale problem the easy, eco-friendly way with
Halcyan Water Conditioners.


