Cooling Tower Chemicals Supplier in India

Zyax supplies cooling tower water treatment chemicals for HVAC towers in commercial buildings, hospitals and hotels, and for process cooling in industry: scale and corrosion inhibitors, biocides, dispersants and online descalants. Clean cooling water keeps chillers efficient, cuts water use and protects condensers and heat exchangers.

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Manufacturer & supplier, Mumbai
Send your water report, get a product recommendation
Bulk packs, delivered across India

Cooling towers treated with scale inhibitors, corrosion inhibitors and biocides

Range: Phosphonate scale inhibitors (HEDP, PBTC, ATMP), corrosion inhibitors, dispersants, oxidising biocides (chlorine and bromine based), non-oxidising biocides (isothiazolinone, glutaraldehyde, BKC, DTC), sulphamic and acid descalants
Used in: HVAC and chiller cooling towers, commercial buildings, hospitals, hotels, malls, data centres, pharma, plastics, steel, power and process plants
Forms: Liquids in cans and drums; chlorine tablets
How we help: Share make-up water analysis, tower capacity (TR), and cycles of concentration; we suggest a programme

The four problems in every cooling tower

A cooling tower cools water by evaporating part of it. Evaporation leaves salts behind, and the warm, open, sunlit water is perfect for microbes. Without treatment, towers suffer from:

Problem	What happens	How it is controlled
Scale	Calcium carbonate and other salts deposit on condenser tubes and fill, cutting heat transfer and raising chiller power use	Scale inhibitors (HEDP, PBTC, ATMP), controlled blowdown, softened make-up
Corrosion	Steel and copper corrode, causing leaks and iron fouling	Corrosion inhibitors, including azoles (TTA or BTA) for copper condenser tubes, and pH control
Biofouling and algae	Slime and algae block fill and nozzles and insulate tubes; bacteria including Legionella can grow	Oxidising biocides plus alternating non-oxidising biocides
Fouling and silt	Dust, silt and debris settle in basins and tubes	Dispersants, side-stream filtration, basin cleaning

Our cooling water chemical range

Product	Role
HEDP	Scale inhibitor and corrosion inhibitor; widely used phosphonate
PBTC	Scale inhibitor that tolerates high hardness, high pH and chlorine better than many phosphonates
ATMP	Economical scale inhibitor and sequestrant
Dispersants	Keep silt, iron and suspended solids from settling
Oxidising biocides (chlorine or bromine based, chlorine tablets)	Fast kill of bacteria and algae; continuous or shock dosing
Isothiazolinone (CMI/MIT)	Broad-spectrum non-oxidising biocide
Glutaraldehyde	Non-oxidising biocide effective on biofilm
Benzalkonium chloride (BKC)	Quaternary ammonium biocide and algaecide
Sodium dimethyl dithiocarbamate (DTC)	Non-oxidising biocide for industrial cooling water
Sulphamic acid and online descalants	Remove existing scale from condensers and fill

Most good programmes alternate an oxidising biocide with a non-oxidising one, because they complement each other: oxidisers give fast general control, and non-oxidisers reach organisms in biofilm that oxidisers miss. Wear protective equipment when handling biocides, and follow the product's handling instructions.

Understanding cycles of concentration

Cycles of concentration (COC) compares the dissolved solids in the tower water with those in the make-up water. Running more cycles saves water and chemicals, because less is bled off as blowdown. But higher cycles also push salts closer to scaling. A good scale inhibitor programme lets a tower run more cycles safely. Measuring conductivity or TDS of make-up and tower water each day is the simplest way to keep track.

How we build a cooling water programme

Make-up water analysis: TDS, hardness, alkalinity, chloride, silica, iron and pH.
System details: tower capacity in TR, circulation rate, metals in the system, current cycles and blowdown.
Problems seen: scale, rising chiller approach, corrosion, algae, smell, frequent cleaning.
Our recommendation: scale and corrosion inhibitor, biocide schedule and descalant, with pack sizes to suit your consumption.

Who uses our cooling tower chemicals

Commercial buildings and IT parks
Hospitals
Hotels and malls
Data centres
Pharmaceuticals
Plastics and injection moulding
Steel and forging
Chemical plants
Food and beverage
HVAC and water treatment AMC contractors

Cooling Tower Chemicals: product range

Each product line has its own page with uses, dosing guidance and FAQs.

Frequently asked questions

What chemicals are used in cooling towers?

Cooling towers usually need a scale inhibitor (such as HEDP, PBTC or ATMP), a corrosion inhibitor, a dispersant, and biocides: an oxidising biocide such as chlorine or bromine alternated with a non-oxidising one such as isothiazolinone or glutaraldehyde.

What is HEDP used for in cooling towers?

HEDP is a phosphonate that inhibits calcium carbonate scale and also helps protect against corrosion. It is one of the most widely used cooling water chemicals.

What is the difference between oxidising and non-oxidising biocides?

Oxidising biocides such as chlorine and bromine kill microbes quickly by oxidising them. Non-oxidising biocides such as isothiazolinone, glutaraldehyde and BKC work in other ways and are better at penetrating biofilm. Alternating the two gives better control, because non-oxidisers reach organisms in biofilm that oxidisers miss.

How do I stop algae in a cooling tower?

Keep a regular biocide programme, cover or shade the basin and distribution decks where possible, and clean out algae and sludge. Algaecides such as BKC help where sunlight reaches the water.

What are cycles of concentration?

Cycles of concentration compare the dissolved solids in the circulating water with those in the make-up water. Higher cycles mean less water wasted as blowdown, but need good scale control.

How do I remove scale from a chiller condenser?

Scale is removed with a descaling acid such as sulphamic acid, either online or during a shutdown, with care for the metals in the system. After cleaning, a scale inhibitor programme stops it from returning.

Do you supply chemicals for HVAC cooling towers in buildings?

Yes. We supply cooling tower chemicals for commercial buildings, hospitals, hotels and malls as well as for industrial process cooling.

Can I send my cooling water report on WhatsApp?

Yes. WhatsApp a photo of your make-up and tower water analysis to +91 98333 22685, with the tower capacity in TR.

Get a quote for cooling tower chemicals

Tell us what you are treating and how much you use. Send your water or effluent analysis if you have one, and we will recommend the right product and pack size.