Float & Fill Valve Replacement
Float & Fill Valve Replacement
If your cistern overflows, hisses or takes an age to fill, the float (fill) valve has worn or scaled up. It's a small part that causes overflow drips, noise and wasted water.
About this service
Float & Fill Valve Replacement in South West London, done properly the first time
We replace side-entry, bottom-entry and delayed-action float valves on toilets, and equivalent valves on cold water storage tanks in loft spaces. Where noise is the complaint we fit a quiet-fill valve, which makes a real difference in flats and en-suites next to bedrooms.
Kingston upon Thames's hard water is the usual culprit: limescale builds on the diaphragm until the valve can't shut off cleanly, and water then trickles out of the external overflow. We set the new valve to the correct water line and check the overflow run while we're there.
Why Maxfix
Why choose Maxfix for float & fill valve replacement
Premium workmanship, fixed pricing and a service experience built around you.
Side-entry, bottom-entry and tank float valves stocked
Quiet-fill options for bedrooms and en-suites
Water level set correctly to stop overflow drips
Loft storage tank valves replaced safely
12-month guarantee on parts and labour
How it works
A calm, four-step process
From the first call to a tidy handover — no surprises, no jargon, no mess.
Get in touch
Call us or send a quick enquiry — we'll respond within an hour during working hours.
Free survey & quote
An engineer assesses the work and gives you a clear, written, fixed-price quote.
Book a date that suits you
Choose a slot that fits around your schedule — we work evenings and weekends.
Work completed cleanly
Uniformed engineers carry out the work, tidy up fully and walk you through everything before leaving.
Get a fast quote for float & fill valve replacement
Free, no-obligation quotes. Most calls answered within 30 seconds.
Trusted experts
Why choose Maxfix
Gas Safe Registered
Every engineer registered & ID-checked
Manufacturer Accredited [to be confirmed]
[accreditations to be confirmed]
Open 24 Hours, Every Day
Call any time — including nights and weekends
Fixed Price, Always
Agreed before we start — no hourly creep
Frequently asked
Your questions, answered
Why is water dripping from a pipe outside my wall?
That's the cistern or tank overflow, and it means the float valve isn't shutting off. Replacing the valve stops it — leaving it can soak the brickwork.
Can a noisy filling toilet be fixed?
Yes. A modern quiet-fill valve removes most of the hiss and the water-hammer knock that older valves cause in Kingston upon Thames's older pipework.
Do you replace loft tank valves too?
Yes, including the delayed-action valves used on cold water storage tanks, plus tank lid and insulation checks while we're up there.
How long does the replacement take?
Most float valve swaps take under an hour, including isolating, fitting and setting the level correctly.
Which areas of South West London do you cover for float & fill valve replacement?
We provide float & fill valve replacement across the whole of South West London, including Kingston upon Thames, Richmond, Wimbledon, Twickenham, Surbiton, Fulham, Putney, Teddington, New Malden, Molesey, Hounslow, Brentford, Isleworth, Long Ditton, Worcester Park, Roehampton, Raynes Park, Morden, Petersham, Motspur Park and the surrounding KT, TW and SW postcodes. Local engineers means short call-out times wherever you are.
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Ready when you are
Book float & fill valve replacement with a Gas Safe engineer — fixed pricing, open 24 hours.
Related repairs
Common bathroom & wc plumbing faults we fix in Kingston upon Thames and across South West London — plus the wider room-by-room services these repairs sit under.
Ready to book?
Book float & fill valve replacement today
Free quotes, fixed pricing and Gas Safe engineers across Kingston upon Thames, Richmond, Wimbledon, Twickenham and the rest of South West London.