Do you have any of the following symptoms?
 
 
- Cold spots in radiators  
- Radiator cold at the bottom  
- Radiator cold at the top 
- Radiators require regular bleeding  
- Blocked pipes and valves due to sludge or lime scale  
- Boiler cutting out due to damaged or blocked pump 
- Radiator water is black or brown with iron oxide sludge 
- The boiler is noisy or makes 'kettling' sounds  
- The pump is noisy or suffering repeated failure 
- The pipes are noisy due to restrictions 
- Pin-hole leaks appearing in radiator bodies  
 
If you recognise any of these symptoms your heating system may need to be power flushed.