Power Flushing Portsmouth
Clear your heating system and cut your bills
Over time, central heating systems build up sludge, rust and debris โ a black, muddy substance that restricts water flow, causes cold spots on radiators and forces your boiler to work harder. A professional power flush removes this build-up completely, restoring your heating system to full efficiency.
At RMWS Plumbing & Heating, we carry out power flushing across Portsmouth, Southsea, Fareham, Gosport and the wider Hampshire area. Our engineers use professional-grade equipment to flush your entire system โ radiators, pipework and boiler heat exchanger โ leaving it clean and running as it should.
Signs you need a power flush
โRadiators are cold at the bottom but warm at the top
โSome radiators don't heat up at all
โYour boiler makes banging or kettling noises
โYour heating takes a long time to warm up
โYou're having a new boiler installed โ required for warranty
โYour energy bills have increased unexpectedly
โRadiator valves are stiff or not working properly
โThe water in your system is discoloured when bled
What our power flushing service includes
โFull assessment of your heating system before work begins
โConnection of professional power flushing machine
โTreatment with powerful cleansing chemicals
โIndividual flushing of every radiator
โFlushing of all pipework and the boiler heat exchanger
โAddition of corrosion inhibitor to protect the system
โMagnetic filter check or installation recommended
โFull system test and balancing on completion
Our power flushing process
1
System Assessment
We inspect your heating system, test radiator temperatures and identify problem areas before starting any work.
2
Machine Connection
Our professional power flushing machine is connected to your system and cleansing chemicals are introduced.
3
Full System Flush
Every radiator, pipe and the boiler heat exchanger is thoroughly flushed until the water runs completely clean.
4
Inhibitor & Final Test
Corrosion inhibitor is added to protect the clean system, then we test and balance everything before leaving.
Areas we cover for power flushing
We carry out power flushing across Portsmouth and the surrounding Hampshire area.
Portsmouth
Southsea
Fareham
Gosport
Waterlooville
Havant
Cosham
Emsworth
Portchester
Hampshire
Frequently asked questions
How much does power flushing cost in Portsmouth?
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Power flushing in Portsmouth typically costs between ยฃ300 and ยฃ600 depending on the size of your heating system and number of radiators. We provide a free written quote after assessing your system โ no obligation.
How long does a power flush take?
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A power flush typically takes 6 to 8 hours for an average-sized Portsmouth home. Heavily silted systems or larger properties may take a little longer.
Do I need a power flush before a new boiler?
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Yes โ most boiler manufacturers require a system flush before installation to validate the warranty. Fitting a new boiler onto a dirty system can cause damage and void your warranty within months.
How often should I power flush my heating system?
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Most heating engineers recommend a power flush every 5 to 6 years, or when symptoms of sludge build-up appear. Fitting a magnetic filter after a flush helps keep your system cleaner for longer.
Get a Free Power Flush Quote
No obligation ยท Written quote ยท Local experts