What Central Heating Sludge Is

 

The name sludge is a very good description; sludge is a mixture of dirt from water and corrosion from pipe work (mainly iron oxide).

 

Sludge is  a ‘treacle like’ substance, the thickness of the sludge varies.

 

 

 

What Causes Central Heating Sludge

 

Central heating sludge is the result of different chemical reactions.

 

There are different metals and liquids in a central heating system; some react when they come together, some deteriorate by themselves. The different chemical reactions have by-products, the by-products come together as sludge.

 

 

 

What Problems Central Heating Sludge Cause

 

Central heating sludge can cause:

 

· Central heating pumps to fail before they should fail.

· The sludge moves round the central heating system into the pump.

 

· Cold spots on radiators.

 

· Inefficient heating due to restricted water flow in radiators.

 

The image below shows how sludge reduces water flow in radiators. The sludge collects at the bottom of the radiator and either restricts or blocks the flow of water round the radiator.

This webpage explains:

 

· What central heating sludge is.

 

· What causes central heating sludge.

 

· What problems central heating sludge causes.

 

· How to remove central heating sludge.

 

 

Central Heating Sludge

Related Pages:

 

¨ Central Heating Problems Page

 

¨ Hot Radiators Upstairs But Not Downstairs (or ‘Vice Versa’)

 

¨ Thermostats

 

¨ Central Heating Timer Problems

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How To Remove Central Heating Sludge

 

Remove the radiator, or radiators, take into garden and flush through with a hosepipe.

 

There are chemical sludge removers but the effectiveness is not always good.

 

 

 

Central Heating Troubleshooting Links

 

Central Heating Problems – Advice & Help  – main Judge Electrical central heating help and advice page.

 

Hot Radiators Upstairs But Not Downstairs – advice & help to solve this problem.

 

Thermostats – what a thermostat is, what central heating system thermostats are used for; shows what central heating thermostats look like.

 

Electrical RCD – Find, Reset, Investigate A Constantly Tripping RCD – is the central heating RCD tripping? How to find the RCD domestic unit, reset an RCD and how to investigate constantly tripping RCDs.

 

Central Heating Pumps – what they are, what they do, common problems & symptoms and common fixes.

 

Lockshield Valve – what a central heating system lockshield valve is and what it does.

 

How To Bleed A Radiator – instructions with pictures.

 

Central Heating Noises – what can cause different types of noises.

 

Central Heating Boiler Problems – Advice & Help  – advice and help on solving common central heating boiler problems.

 

Central Heating Timers Problems – Advice & Help  – advice and help on solving common central heating timer problems.

 

All Radiators Downstairs Cold – possible explanations.

 

Single Radiator Not Working – possible explanations.

 

Central Heating Boilers – Information about central heating boilers.

 

Banging Noise – possible explanations.

 

Humming Noise – possible explanations.

 

Creaking Noise – possible explanation.