ADEY Professional Heating Solutions


Central Heating System


Stronger formula –Enhanced cleaning

High performance MC3+ from ADEY, the makers of the market leading MagnaClean® filter, removes both system corrosion and limescale deposition.

MC3+ central heating system cleaner is a new rapid performing and powerful chemical cleaner specially designed to remove central heating system sludge and debris. Formulated to provide better sludge removal for the average-sized system AND cleans systems with up to 15 radiators.

Suitable for both sealed and open vented central heating systems.

The new, stronger formula has undergone stringent testing in ADEY’s accredited laboratory. It has been designed to provide better, stronger and improved cleaning. Our recommendation for dosing is one bottle per 125 litre system or up to 15 radiators.

  • Removes sludge, debris and scale
  • High performance chemical cleaner
  • Restores 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 MC3+ 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 improved cleaning, being developed and tested within ADEY’s own UKAS accredited laboratories here in the UK.

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

Product data

How to use

500ml of MC3+ treats 125 litres or up to 15 single panel radiators. Introduce MC3+ to the system via the filling loop or radiator using a suitable injector, or via a MagnaClean® filter. For open vented systems MC3+ can be added via the F&E tank, remembering to remove sufficient water via the drain-point to ensure MC3+ enters the system circuit.

MC3+ protects vulnerable metals in the heating system during the cleaning process which means it can be dosed up to 30 days in advance.

Clean system as recommended in BS7593 using ADEY MagnaCleanse® and MC3+. For heavily sludged systems, ADEY MC5 RapidFlush System Cleaner is recommended.

Following the cleanse, drain and flush thoroughly until the water runs clear. Refill the system and add the correct dosage of MC1+ for the optimum protection against the build-up of corrosion and limescale.

Physical and chemical properties

Appearance: Liquid

Colour: Brown

Odour: Slight

Solubility: Soluble in water

pH (concentrated solution): 6.5

Relative Density: 1.10 g/cm³


ADEY is a carbon neutral company and cares about the environment. MC3+ is classified as non-hazardous and while removing both system corrosion and limescale deposition, 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.