MCZero®
First and foremost, MCZero is an anti-freeze for central heating systems. It’s specially formulated to stop all water types freezing. But this chemical treatment also prevents metal corrosion and scale formation. So once it’s in the heating system, it protects in all weathers, not just during cold snaps.
Installer benefits
- Suitable for all heating systems
- Increased-strength, high-performance inhibitor
- Best-in-class formulation for mild steel protection to prevent magnetite generation
- Protects against corrosion and scale
- Compatible with all metals

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Technical specifications
Environmental credentials
Physical and chemical properties
- Non-hazardous
- Non-toxic
- Biodegradable
- Concentration 25% 30% 35% 40%
- Protection -11°C -14°C -17°C -22°C
- Physical and chemical properties
- Appearance: Liquid
- Colour: Colourless/pale yellow
- Odour: Slight
- Solubility: Soluble in water
- pH (concentrated solution): 7.0 - 8.0
- Relative Density: 1.02 - 1.10 g/cm³
Quality
- ISO 9001 & ISO 14001
Dosage instructions
Maintain peak performance
A 25% dose of MCZero will provide frost and system corrosion protection
for a typical 100 litre/ten radiator system down to -11°C. For larger
systems or a greater degree of frost and corrosion protection, please
use the recommended dosage guide as detailed below.
Concentrations: 25% 30% 35% 40%
Protection: -11°C -14°C -17°C -22°C
To introduce MCZero to the system, we recommend using a suitable dosing vessel. Alternatively, dose via the F&E tank.
Also available in the following sizes: 5L, 10L, 25L, 200L, 1,000L.
Do not use in single feed indirect cylinders.
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Homeowner benefits
- Prevents water freezing in the heating system
- Reduces the chance of pipes bursting
- Protects against corrosion and scale in the long term
- Maintains heating efficiency
- Helps reduce heating costs and maintenance bills

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Learn more about our water treatment chemicals
ADEY Best Practice in liquid form
ADEY’s water treatment chemicals have been created from premium ingredients and mixed expertly together, the complete range is developed to an outstanding quality. With 9 formulas to choose from, you can clean and protect every system.

MCZero+ available in 10L
MCZero+® is a concentrated monopropylene-based glycol solution designed to prevent freezing in all types of water. The formulation also contains an inhibitor to protect against corrosion and scale formation, and biocide to prevent bacterial contamination.
Specially designed to protect low-temperature heating and cooling systems.
MCZero®
First and foremost, MCZero is an anti-freeze for central heating systems. It’s specially formulated to stop all water types freezing. But this chemical treatment also prevents metal corrosion and scale formation. So once it’s in the heating system, it protects in all weathers, not just during cold snaps.
Installer Benefits
- Suitable for all heating systems
- Increased-strength, high-performance inhibitor
- Best-in-class formulation for mild steel protection to prevent magnetite generation
- Protects against corrosion and scale
- Compatible with all metals
Sample text. Click to select the text box. Click again or double click to start editing the text.
Sample text. Click to select the text box. Click again or double click to start editing the text. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
Technical Specifications
Physical and chemical properties
Environmental credentials
- Concentration 25% 30% 35% 40%
- Protection -11°C -14°C -17°C -22°C
- Physical and chemical properties
- Appearance: Liquid
- Colour: Colourless/pale yellow
- Odour: Slight
- Solubility: Soluble in water
- pH (concentrated solution): 7.0 - 8.0
- Relative Density: 1.02 - 1.10 g/cm³
- Non-hazardous
- Non-toxic
- Biodegradable
Quality
- ISO 9001 & ISO 14001
Dosage Instructions
Maintain peak performance
A 25% dose of MCZero will provide frost and system corrosion protection
for a typical 100 litre/ten radiator system down to -11°C. For larger
systems or a greater degree of frost and corrosion protection, please
use the recommended dosage guide as detailed below.
Concentrations: 25% 30% 35% 40%
Protection: -11°C -14°C -17°C -22°C
To introduce MCZero to the system, we recommend using a suitable dosing vessel. Alternatively, dose via the F&E tank.
Also available in the following sizes: 5L, 10L, 25L, 200L, 1,000L
Sample text. Click to select the text box. Click again or double click to start editing the text.
Homeowner Benefits
- Prevents water freezing in the heating system
- Reduces the chance of pipes bursting
- Protects against corrosion and scale in the long term
- Maintains heating efficiency
- Helps reduce heating costs and maintenance bills
Enter your postcode to find your nearest merchant.
Get straight to the products you need in a few clicks.


Find a Stockist
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ADEY - The Complete Chemical Range
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Our water treatment chemicals have an incredible start in life; created from premium ingredients and mixed expertly together, the complete range is developed to an outstanding quality.

Also available in Rapide
MC1+ is available in a 500ml and a 300ml bottle.
Its quick-dose bottle means the heating treatment can be added via a radiator, air vent or boiler filling loop in as little as 20 seconds, meaning its protection gets to work quicker.
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