Facts

The facts
FACT
Many central heating systems have never been
cleaned and therefore will be operating below their
optimum efficiency level. Cleaning a dirty system can
improve effectiveness by typically 15%
1
, as shown
by independent tests. Adding Sentinel to your system
will help ensure it is running as effectively as possible.
FACT
Corrosion, scale and sludge in the system are the
most common sources of problems that affect the
energy efficiency and the effectiveness of the boiler
and heating system. You may notice cold spots at the
bottom of your radiators, a noisy pump or just that
the system does not heat your house the way it
used to.
It is not unusual for a radiator with several years service to have a significant
level of debris present. This debris will prevent the radiator warming the
room correctly. The two images above illustrate this. The radiator in the
‘Before’ image has a build-up of sludge which is clearly producing a large
cold area on the radiator. The ‘After’ image was taken after the heating
system had been cleaned with a Sentinel cleaning product.
FACT
Cleaning a dirty heating system could save you $$$
every year.
1
Based on independent research by Gastec@CRE – the largest heating
research body.
Before After