Does your heating need a Powerflush?
Radiators not warming up like they used to? Bills higher than they should be? A Powerflush of your whole central heating system might be the answer.
You don’t need to be a British Gas customer to get help from our engineers.
What is a Powerflush?
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A deep clean for your heating system
Improves the way your home heats up
Cuts your heating bills
Helps to protect your boiler
What are the signs you might need a Powerflush?
- Cold spots on your radiators
- Some radiators are slow to heat up
- Boiler makes strange noises
- ‘High pressure’ error code on boiler
How does a Powerflush work?
Your engineer uses a special machine to pump cleansing chemicals through every part of your central heating system. A Powerflush usually takes around eight hours to complete.
Step 1
Your system is drained, so a three-step chemical process can clear sludge from your boiler, pipes and radiators.
Step 2
Every radiator is flushed individually to ensure your whole system is clean, energy-efficient and blockage-free.
Step 3
The wastewater is disposed of down a suitable outside drain – and is replaced with fresh clean water.
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How much does a Powerflush cost?
The cost of a Powerflush depends on the size of your central heating system. For a fixed-price quote, book a free home visit by one of our heating engineers.
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How long does a Powerflush take?
A Powerflush is a very thorough cleaning of your whole central heating system, so it usually takes around 8 hours to complete. Your engineer will give you an estimate of how long it will take at the same time as your fixed-price quote.
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Frequently Asked Questions
What’s the difference between a Powerflush and a chemical flush?
A chemical flush adds chemicals to the heating system and lets them circulate using the existing pump. This is another way of breaking down and removing debris and can improve the efficiency of your heating system. A Powerflush is more intensive because it uses a high-flow, low-pressure pumping machine to circulate the chemicals and clean the whole system.
How can I check if I need a Powerflush?
The best thing to do is to book a free quote from a British Gas heating engineer. They will look at any problems in your heating system and let you know if a Powerflush can help. But you can also check a few things yourself. If you have cold spots on your radiators – or if they’re cooler at the bottom than the top – they might be blocked with sludge. A Powerflush will remove this sludge from your heating system and make it hotter and more efficient.
If your heating or hot water is slow to warm up (or not feeling as hot as normal), this can also be a sign that your system is blocked. Your boiler can also become inefficient or blocked, especially if it’s old or hasn’t been serviced in some time. If you have old pipework or radiators, they might be rusting and causing sludge to build up. If you have a new boiler, it’s important that sludge is removed, as this can clog up your new boiler, reducing its efficiency and leading to future breakdowns.
Can I perform a DIY Powerflush on my heating system?
Powerflushing radiators and the rest of your central heating system should only be carried out by an experienced professional like a heating engineer or a plumber. To be safe and effective, a Powerflush requires specialist equipment and chemicals, as well as technical knowledge and experience.
How do I book a Powerflush?
Just book a British Gas engineer to visit your home for a free fixed-price quote. It’s then simple to accept the quote and arrange a day for us to do the Powerflushing of your central heating. If you already have a quote, it’s easy to accept it online.
How does a Powerflush help?
Powerflushing your central heating system improves the circulation of water and makes it more efficient. Your radiators will heat more quickly. It'll reduce the risk of breakdowns, cold radiators and noisy boilers. It'll help prolong the life of your boiler, radiators and systems.
How is a Powerflush done and how does it work?
We'll use a machine and three-step chemical process to thoroughly clean out your boiler, pipes and radiators, and replace dirty sludge with clean water using a cleansing agent. We'll need to drain the heating system down and flush every radiator individually. We can then get rid of the waste down a suitable outside drain.
I already have HomeCare – is my Powerflush included as a part of that?
Powerflush is not included in any of our HomeCare packages.