Power Flush

A Power-flush is a cleansing process for your boiler which removes any dirt, sludge, rust and debris that may have accumulated within your system over time. If these substances are left in your heating system, they could cause blockages or corrosion and ultimately reduce the efficiency of your boiler – they could even eventually lead to a breakdown.

What happens during a Power-flush and how long could it take?

Using a specialised machine, a chemical is circulated through your radiators, pipes and boiler at high pressure. This flushes out any potentially inhibiting deposits and thus allows water to flow freely throughout your system.
The length of time needed for a Power-flush typically depends on your system’s size and condition. Usually, a Power-flush can take up to around 6 hours to perform, however on particularly complicated systems, it could take up to 2 days.

What are the benefits of getting a Power-flush?

There are plenty of benefits of getting a Power-flush. These include:

  • Enhanced energy-efficiency
  • Improved system reliability
  • Potentially lower energy bills*
  • The reduced likeliness of boiler breakdown
  • Could increase system lifespan
  • Radiators can warm up quicker
  • Better quality of heating and hot water
  • Reduced noise from boiler and radiators

When should you get a system Power-flush?

Power-flushing is required when the system is heavily contaminated. This can be caused by a number of factors including incorrect installation, the system not been thoroughly cleansed before installation or bacterial growth.

If you’re getting a new boiler installed, the building regulations recommend that a suitable cleanse is carried out prior to the installation. This can vary from a simple system flush with clean water to a powerful Power-flush on more contaminated systems. This helps to prevent your new system from being contaminated and inhibited by the sludge and debris that was present in your old one.

The pilot light has gone out

  • There’s no visible pilot light on your boiler
  • Your boiler won’t fire up

A pilot light can blow out for a number of reasons, but you should be able to reignite it by following the instructions on your boiler. If, however, you smell gas or notice any other signs, such as a change in the flame colour or sooty marks on (or around) the boiler, don’t try to reignite it. Turn the boiler off and call the emergency gas line on 0800 111 999. And if your pilot light persistently blows out, have a Gas Safe engineer take a look at it.

Signs your system needs a Power-flush

There are a number of signs that could help you determine whether your system needs a Power-flush. These include:

  • Cold spots on your radiators, particularly at the bottom
  • The radiators require constant bleeding
  • Noisy radiators and boiler
  • Radiator leaks
  • Frequent breakdowns
  • The boiler constantly needs to be restarted
  • Central heating takes a long time to heat up
  • Some radiators struggle to heat up more than others
  • Discoloured water when radiators are bled
  • Cold radiators but hot pipes

Who should perform a Power-flush?

You should always ensure that a professional carry out any work on your central heating system. Qualified engineers will always carry their Gas Safe ID with them, you can ask to see it if you have any doubts.

Whilst there are no rules stating that you must be Gas Safe registered to perform a system Power-flush, you must be competent and able to complete the job properly. A mistake could make your heating system perform worse than it did before and there are risks in using the specialised chemicals. We, therefore, recommend seeking the help of a professional.

At ACF our engineers are special trained in performing Power-flushes. Get in touch today to help diagnose whether your system requires a power flush and to book an appointment.

How much does a Power-flush cost?

Prices for a central heating Power-flush can vary depending on the size of your heating system and the complexity of the job. Generally, prices can start at approximately £299. This may seem like a costly expense, however, there are potential savings to be made due to enhanced system efficiency and this measure could help to prevent an expensive breakdown in the future.

Want to find out more?

If you have any additional questions, do give us a call. We have an expert team here at ACF Plumbing & Heating so there is always someone on hand to help answer any question you may have. They can also help you with any queries involving our services, which service is correct for you and provide you with a quote.