Chemical Product Range

Closed Heating System Treatment


Heatreat Range 

Product Data (PD) and Safety Data Sheets (SDS) are available upon request

Closed Heating in buildings or systems employed in processes are usually fully automatic and thermally efficient. These advantages are lost where there is a need for non-routine maintenance or remedial actions due to inadequate consideration of water treatment and testing.

Hot water systems for heating are normally defined by the pressure conditions at which they operate. Low pressure ( LPHW), Medium pressure ( MPHW ), High Pressure ( HPHW ). Using guidelines of BSRIA BG 50 ” Water treatment of Closed Heating and Cooling System ” and BS 8552 ” The sampling and monitoring of water from building services closed systems enables the systems to be effectively and economically operated negating any problems.

The water treatment chemicals should easily be dosed effectively and the water regularly sampled and analysed in a simple regime.
HydroChem chemicals and programme do just this, giving protection from Scale, Corrosion, Deposition and Micro-biological fouling to meet the system parameters for trouble free operations.

Chemical Treatment Range



Alkalinity Control

High Pressure Systems
H – 302
H – 304
H – 306
H – 308
Liquid amine and alkaline based treatments to increase alkalinity with alternatives for not adding dissolved solids.

Deposit Control
Medium and Low Pressure Systems   

H – 350
H – 351
H – 355
Polymer based liquid formulated products used where extra scale and deposit control required.

Corrosion Inhibition

Low Pressure Systems
H – 360
H – 362
H – 365
Powdered inhibitors formulated for use with DI or low hardness waters for large systems.

Corrosion and Scale Inhibition
Low Pressure Systems

H – 370
H – 372
H – 375
H – 377
Liquid scale and corrosion inhibitors based upon buffered Nitrite formulated blends for multi-metal protection

Corrosion and Scale Inhibition

Medium and Low Pressure Systems
H – 381
H – 382
H – 383
Tannin based liquid scale and corrosion inhibitors specifically selected for the systems metals.

Corrosion and Scale Inhibition
Low Pressure Systems

H – 390
H – 395
Liquid inhibitors based upon Molybdate formulations.

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The full range of HydroChem Services:

Water Treatment - Industrial

We are leading supplier of Legionella compliance services, water hygiene risk assessment, water treatment, installations and maintenance.

Water Treatment - Domestic

Assessing systems that may pose a risk to exposure to legionella, including humidifiers, air washers, emergency showers and indoor ornamental fountains.

Risk assessment

Ensuring all commercial premises have a statutory duty to control the risk of legionella bacteria in water systems. 

Water Hygiene

Protecting the public from hazards associated with bacteria in water systems particularly Legionella.


We offer an extensive range of water treatment chemicals to suit all processes and requirements.

Chemical Cleaning & Disinfections

We have dedicated teams of experienced engineers to diagnose and give site specific recommendations.

Plant & Equipment

We offer a vast range to ensure that processes are effectively operated to their maximum advantage and costs.


After a Legionella risk assessment, it is likely that corrective or improvement works are required to bring your system up to compliance.

Mould, Air & Surface Remediation

Our protocols allow a building or site be kept clean, environmentally sound and free of contamination.

Borehole Water Treatment

We offer an extensive range of borehole water treatment options to suit all processes and requirements.