Water supply in buildings & desalination plants for buildings ☎ today

Make sure there is always healthy and clean water in the property

Residents in apartment buildings depend on a good and stable water supply. Guldager has been providing corrosion protection and water treatment to countless properties for more than 70 years. We therefore know the challenges in residential buildings and have made it our speciality to deliver complete solutions, where we think about the entire water installation. We call it intelligent water treatment.

This means that we provide corrosion protection, softened water and bacteria prevention to many of our customers. But we don't just provide the systems to solve the problems, we also keep them running around the clock.

At Guldager, intelligent water treatment is also effective service. And our comprehensive service programme allows you to make a service agreement that suits your needs.

With a complete solution from Guldager, including an ongoing service agreement, we can ensure that your water installation is operational around the clock and provides healthy and clean water to residents.

Products and service go hand in hand - 360 degree approach to real estate

All people depend on a good and stable water supply. Particularly in properties where the individual occupier has no control over the supply, people depend on and trust that the property is in control.

For several generations Guldager A/S has supplied water treatment and corrosion protection to thousands of properties.

Corrosion protection, softened water and bacteria prevention/control are some of our core competences. Not only delivery of the plants, but also commissioning and service agreements are part of our 360 degree concept.

Contact a consultant

Call us +45 48 13 44 00 and find out how we can help.

Jan Jensen

Area Sales Manager
All of Denmark

+45 2268 4130

jje@guldager.com

Erik Clausen

Area Sales Manager Funen & Jutland

+45 2268 4123

ec@guldager.com

Per Kaarup

Area Sales Manager Zealand

+45 2268 4131

pka@guldager.com

CASE: Investment earned back in less than a year

Limescale in the hot water caused major problems with poor heating efficiency and limescale in the aerators and on the plumbing.

At a property in Copenhagen, Guldager has installed a "UniSoft® Hydrus" water softener in the property's central heating system to descale the hot water for more than 400 apartments. In addition to fewer problems with clogged perlators for the residents, the property achieved a saving on district heating costs of more than 20%.

The savings were achieved by significantly improving the cooling of the district heating, which paid for the investment in the softener in less than a year.

Contact Guldager today or

Download case study pdf

Are you experiencing any of these problems?

Corrosion of hot water pipes and hot water tank?

The reason:

Corrosion in pipes/boiler

Solution:

Catolysis/Electrolysis

These products can fix it:

Unicat, Cathodic protection

Poor heat transfer from heat exchanger

The reason:

Calcified heat exchanger

Solution:

Acid cleaning of heat exchanger/prevention of calcification

These products can fix it:

Acid cleaning CalcFree, UniSoft® 30-60-90, UniSoft® Hydrus

Limescale coatings in hot water pipes and hot water tank

The reason:

Lime in the water

Solution:

Softening of the hot water

These products can fix it:

UniSoft® 30-60-90 / UniSoft® Hydrus

Red water or slime in the water

The reason:

Corrosion and lime and bacteria

Solution:

Catolysis/electrolysis, softening, bacterial prevention

These products can fix it:

UniSoft® 30-60-90 / UniSoft® Hydrus, Unicat, UniControl, LegioControl®, Healthy Water concept

There is no hot water in all apartments

The reason:

Circulation is poor

Solution:

Regulation of valves

These products can fix it:

Alpha-B valve

High maintenance costs due to pumps and valves

The reason:

Lime in the water

Solution:

Softening

These products can fix it:

UniSoft® 30-60-90, UniSoft® Hydrus

High costs for return heat

The reason:

Poor heat transfer due to lime

Solution:

Softening

These products can fix it:

UniSoft® 30-60-90, UniSoft® Hydrus

Lime coatings on sanitary ware and tiles

The reason:

Lime in the water

Solution:

Softening

These products can fix it:

UniSoft® 30-60-90, UniSoft® Hydrus

Calcified showers and aerators

The reason:

Lime in the water

Solution:

Softening

These products can fix it:

UniSoft® 30-60-90, UniSoft® Hydrus

Sick residents (suspicion of bacteria in the water)

The reason:

Legionella bacteria in the water

Solution:

Bacteria prevention

These products can fix it:

LegioControl®, Container disinfection, Healthy Water concept

... it's time to take a look at the water in the property. Contact us or read more about our products below.

FAQ - get answers to the most common questions

Is corrosion protection necessary today?

Yes, even though most installations today are made of corrosion-resistant materials, it is still necessary to protect steel tanks, sand filters, etc. Moreover, there are tens of thousands of installations made of galvanised steel with many years of age that can last just as many more years with active corrosion protection.

When the hot water tank is removed, we don't need corrosion protection, do we?

Well, remember that the piping system still needs to be protected against corrosion.

How can softening improve operations?

You avoid limescale deposits on heaters and in pumps and valves. And reduce maintenance costs.

Is it necessary to disinfect the container every year?

Yes, an annual cleaning of the tank combined with disinfection with chlorine dioxide is recommended as the best remedy against Legionella.

Doesn't corrosion protection remove limescale?

No, it only prevents corrosion. But the limescale can be removed with a softener.

If you did not find the answer to your question, please call us on +45 48 13 44 00

Catolysis

Catolysis is Guldager's effective technology to protect against corrosion in hot water
boilers and piping installations.

Unicat®

For installations with galvanised steel piping systems, with changeovers or small boilers, where it is not possible to fit cathodes.

Cathodic Protection

For iron containers with corrosion-resistant piping. Can be combined with Unicat® and UniControl.

chloriDOS® iOX

chloriDOS® iOX® is a dosing system that combats Legionella in waterborne systems.

Hyprolyser iSEC

Electrolysis-based disinfection system for continuous prevention of Legionella in hot water installations - using only salt, water and electricity.

Alpha-B

Dynamic flow control valve for domestic hot water specially designed for flow control.

Water filters for acute legionella treatment

Filters that can be placed directly on a showerhead, faucet or tap if legionella is detected.

softliQ:SD softening

Drinking water approved softener for families from 1 to 12 persons. 1,8-3,8 m³/h.

softliQ:MD softening

Drinking water approved softener for larger homes and smaller properties with up to 30 people. 3.2-5.6 m³/t

UniSoft® 9100

A duplex plant is the right choice when there is a need for continuous supply of soft water in large volumes. 2-15 m³/h.

UniSoft® 30-60-90

Manually controlled softening plant, operating without electricity. 2,7-7,5 m3/t.

Boiler cleaning

Hot water tanks should be opened and cleaned once a year to prevent bacteria.

Container disinfection

An annual boiler disinfection with chlorine dioxide removes biosolids and breeding grounds for bacteria.

Risk assessment

A risk assessment is a detailed plant engineering review from a to z.

Water analysis

We offer several types of water analysis based on different analytical methods.

Pipe system flushing

An annual pipe system flushing effectively removes biosolids from distribution lines and risers.

Acid cleaning

Acid cleaning of boilers and inverters for better heat transfer.

Unifill Gold

Unifill Gold removes bad odors and unwanted tastes in the water, reduces any chlorine compounds and filters down to 0.1 microns.