Professional power flushing to restore your central heating system's efficiency. Eliminate cold spots, reduce energy bills and extend the life of your boiler.
Over time, central heating systems accumulate rust, sludge and scale deposits that build up inside radiators, pipework and the boiler itself. This contamination restricts water flow, reduces efficiency and can eventually cause serious damage.
A power flush forces a powerful flow of water and specialist chemicals through your heating system to remove these deposits — restoring full circulation, eliminating cold spots and significantly improving efficiency.
Radiators warm at the top but stay cold at the bottom — a clear sign of sludge blocking circulation.
If radiators take significantly longer than they used to reach full temperature, sludge is likely restricting flow.
When bleeding radiators, if the water is brown or black rather than clear, sludge is present in the system.
Noises from the boiler or pump often indicate sludge or scale interfering with flow.
Most manufacturers recommend a power flush before fitting a new boiler into an older system to protect the new appliance.
Blockages caused by sludge can trigger the boiler's safety systems, causing it to lock out repeatedly.
We assess your heating system and check for existing leaks before confirming a power flush is the right treatment.
Our professional power flushing unit is connected to the heating system at the pump or radiator connections.
Powerful flow combined with specialist chemicals breaks down and removes sludge, rust and scale from every part of the system.
The system is neutralised and thoroughly rinsed until the discharge runs completely clear.
A corrosion inhibitor is added to protect the system long-term. All radiators tested for even heat distribution before we leave.
Free, no-obligation quote
"Installed my sister's boiler, repaired a boiler for me and also carried out a boiler service. Was very knowledgeable with all work carried out."
"I had a new hot water cylinder fitted. DGN GAS arrived the next day, carried out diagnostics and resolved the problem. Everything came to a very fair price. Highly recommend DGN."
Call us to discuss whether a power flush is right for your heating system. London-wide coverage.
07813 474638