ADEY Professional Heating Solutions


Central Heating System


Stronger formula – Better protection

High performance MC1+ from ADEY, the makers of the market leading MagnaClean® filter, prevents both system corrosion and limescale deposition. Suitable for both sealed and open vented central heating systems.

MC1+ chemical delivers far better central heating system protection than a standard 100 litre inhibitor by future-proofing the system against partial system drain-down. Formulated to provide better protection for the average-sized system AND protect systems with up to 15 radiators.

  • Protects against corrosion and scale
  • Increased strength high performance inhibitor
  • Maintains heating efficiency
  • Treats 125 litres
  • High concentrate formula
  • Helps reduce heating and maintenance bills
  • For use in accordance with BS7593:2006
  • Suitable for all heating systems

The latest MC1+ chemical is the product of a considerable amount of industry knowledge and experience built up over a long number of years. It has been designed to provide better, stronger and increased protection, being developed and tested within ADEY’s own UKAS accredited laboratories here in the UK.

Available in 500ml, 5L and 10L bottles.

To check levels of MC1+ Protector in the central heating system, view ADEY’s MC1+ Quick Test Kit  

Product data

How to use

500ml of MC1+ treats 125 litres or up to 15 single panel radiators. To introduce MC1+ into the system, we recommend dosing using the MagnaClean® canister. Alternatively, dose via a radiator or the F&E tank.

To ensure ongoing protection, MC1+ levels should be checked regularly during an annual system service. Adequate treatment levels can be checked using the MC1+ Quick Test Kit.

N.B. NOT for use in single feed indirect cylinders.

Physical and chemical properties

Appearance: Liquid

Colour: Yellow

Odour: Slight

Solubility: Soluble in water

pH (concentrated solution): 8

Density: 1.12 - 1.16 g/cm³


ADEY is a carbon neutral company and cares about the environment. MC1+ is classified as non-hazardous and while delivering effective protection against corrosion and limescale is non-toxic and biodegradable.


EN 9001 & ISO 14001

Health & Safety

Keep out of reach of children. Not to be taken internally. Avoid contact with eyes and skin. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.