And you have no idea how much performance is being lost here…

Imagine you’re standing in the boiler room after a long installation at a customer’s house. The new heat pump purrs like a kitten, the heating curve is right, the hydraulic balance is perfect—everything is perfect, or so you think.…

Because a few weeks later, your cell phone rings: ”
The heating takes forever to warm up—and the energy consumption is really high.”

Do you know moments like this? You drive out, measure, check, turn here, optimize there – and yet it still feels like the system has an invisible ball and chain around its ankle.

That ball and chain is called limescale.
Or rather: a heat brake.

Limescale – the invisible enemy right inside the system

Limescale is like that colleague who spreads himself everywhere he has no business being.
Wherever water is heated, it begins its insidious mission:

It coats heat exchangers in a gray armor
It settles like concrete on heating surfaces
It blocks valves, sensors, and flow rates

And it does all this completely unnoticed.
Because on the outside, the system often looks like it has just been installed – but on the inside, it has long since been running on emergency mode.

Just 1 mm of limescale can already cause a 10% increase in energy consumption .
Doesn’t sound like much? Then think about a whole heating season.
Or five. Or ten.

The heat stays halfway

You know the pictures:
You open a plate heat exchanger and it looks as if a geological journey through time has taken place inside.
“Brown crust meets moon surface”.

Or you’re called in for annual maintenance—and when you bleed the system, more sludge comes out than water.

Limescale ensures that heat stays where it is generated – in the boiler or heat pump …
instead of in the radiator or underfloor heating.
This means:

Pumps run in marathon mode
Burners cycle until they lose their nerve
The customer pays for heating – but freezes in the process

And who gets called when things go wrong?
That’s right: you.

The truth: Limescale does not occur by chance

Limescale is the result of incorrectly treated heating water.
As soon as hardness minerals enter the system, things heat up in the truest sense of the word – and the crystal party begins.

And yes—we all know of systems where the initial filling was done sloppily.
“It’ll work.”
It does, at first … but not anymore.

You want performance? Then the water needs the right base

Imagine your heating system as a high-performance race track.
If there is gravel on the asphalt, you can fit the best tires you like, but the horsepower won’t get to the ground.

Heating water works the same way.
It must:

✅ be free of limescale
✅ be corrosion-inhibiting
✅generally compliant with VDI 2035 be adjusted

Only then can modern, energy-efficient systems show what they are capable of.

The solution? It’s clear: clean water in the circuit

And this is where solutions come into play that you can apply easily and directly:

Bypass treatment for existing systems

Heaty Ferriline No. 2
→ The hero against existing deposits

➡️ It removes magnetite, lime particles, and dirt from the heating system—without system downtime.
➡️ Ideal for renovating and boosting the efficiency of old systems.
➡️ Thanks to Vadion pH-Control, both the conductivity and pH values are always within the optimal range.

You apply it, let it work – and the heat pump will thank you with fewer cycles and more power.

Heaty Ferriline No. 2

Complete unit for professional bypass treatment, sludge and magnetite filtration in the hot water area incl. MAGella twister
To the product

Guideline-compliant replenishment

Heaty Complete PROfessional
→ The reliable source for high-quality heating water

➡️ Desalinates directly during replenishment
➡️ Stable pH value according to recognized technical standards
➡️ Perfect for service, maintenance, and system expansions

And you? You know that everything will be fine during your next customer call.

Heaty Complete Professional

Heaty Complete PROfessional is the world’s first smart IoT make-up system, including Cloud connection – fully automatic, leakage protection and digital water meter.
To the product

Imagine…

You drive to the next maintenance appointment—and instead of trouble, you’re greeted with a smile:
“Since you were here, the system has been running like clockwork.”
No cold rooms.
No wasted energy.
No mystery behind poor figures.

Just heat that goes where it belongs.

Conclusion: Limescale is annoying. But not invincible.

Limescale eats away at efficiency.
It steals heat.
And in the end, it jeopardizes your good reputation.

But you have everything under control.
With clean, compliant heating water in accordance with VDI 2035, you can take the wind out of limescale’s sails.

Clear the heat exchanger again.
Restore the system to its full power.
And give yourself a few more peaceful nights.

👉 If you wish, we will be happy to assist you in selecting the right treatment solution for your customers and projects.

Lime as a heat barrier