How to fix a running toilet: replace the flapper
A toilet that keeps running is usually the flapper. How to confirm it, pick a 2-inch or 3-inch size, fit it and set the chain in about 20 minutes.
Write to the editors[email protected]
Safety firstWe say when a job needs a pro

Leak detection, radiator care and blocked drains, explained in plain English

A dripping tap, a radiator that stays cold at the bottom, a toilet that won't clear: most plumbing faults give clues long before they become emergencies. These guides explain what is going on, what you can safely check yourself and when a qualified professional should take over.
More about these guidesA drain snake and a toilet auger look alike but do different jobs. Which clog each one is for, how to use both, and the mistakes that scratch porcelain.
Grease, starch, coffee grounds and appliance waste cause most kitchen sink blockages. How each one builds up, and how to clear and prevent it.
A stage-by-stage method for clearing a slow or blocked basin, from lifting the pop-up plug to removing and cleaning the trap.
Stop flushing, use the right plunger, and know when the blockage is in the drain rather than the pan. Plus what never to put down a toilet.
A toilet that keeps running is usually the flapper. How to confirm it, pick a 2-inch or 3-inch size, fit it and set the chain in about 20 minutes.
Work out which tap you have and where the leak starts, then swap the washer, O-ring or cartridge without flooding the basin.
Where pipes freeze, how to insulate them, which heating settings help, and exactly what to do if a pipe freezes or bursts this winter.
Water leak detection & repair: the full guide
How to Do a Water Meter Leak Test in Under an Hour
Signs of a hidden water leak and how to confirm each one
Electronic leak detection explained: the tools and the survey
How to bleed a radiator properly, and what the air is telling youGuides to the faults that actually happen at home, written to help you decide what to do next
What to check, switch off or photograph in the first ten minutes, before anyone is called out.
How traps, valves, sealed systems and drains actually work, without the trade jargon.
Every guide is clear about the jobs that belong with a qualified, registered professional.
What builds up inside radiators, the signs a heating system needs flushing, and how manual cleaning, chemical flushes and power flushing compare.
Read the guide
How wet and electric underfloor heating compare with radiators on warm-up time, flow…

How to read a combi boiler's pressure gauge, the usual reasons a sealed system loses…

Shower filters cut chlorine and odour but don't soften water. What they remove, what really…

A simple monthly, quarterly, seasonal and annual routine for taps, traps, pipes and boilers…
EasyPoint-and-read surface temperatures, handy for finding the cold patch on a radiator, checking flow and return pipes or an underfloor loop.
$18.99 Amazon price, 18 October 2026, 20:01 UTC
Buy on Amazon
EasyA hard foam-lined cap that loops over an outside tap to keep frost off the valve once the line has been drained.
$6.79 Amazon price, 18 October 2026, 20:01 UTC
Buy on Amazon
EasyA small battery alarm that sounds when water reaches it; place one by the water heater or sump.
$39.99 Amazon price, 18 October 2026, 20:01 UTC
Buy on AmazonProduct prices and availability are accurate as of the date/time indicated and are subject to change.
Some tool links earn us a commission. As an Amazon Associate I earn from qualifying purchases. Open the full Toolbox
Boilers & Heating · 18 October 2026
When and how to bleed a radiator, which one to start with, how to top up a sealed system afterwards and why some radiators keep needing it.
Keep readingBathroom & Kitchen · 17 October 2026
Shower filters cut chlorine and odour but don't soften water. What they remove, what really tackles scale, filtered heads, cartridges and who they suit.
Keep readingBathroom & Kitchen · 16 October 2026
A toilet that keeps running is usually the flapper. How to confirm it, pick a 2-inch or 3-inch size, fit it and set the chain in about 20 minutes.
Keep readingBlocked Drains · 15 October 2026
A drain snake and a toilet auger look alike but do different jobs. Which clog each one is for, how to use both, and the mistakes that scratch porcelain.
Keep readingHome & Living · 23 September 2026
A simple monthly, quarterly, seasonal and annual routine for taps, traps, pipes and boilers that catches small faults before they turn into leaks.
Keep readingLeak Detection · 14 August 2026
A step-by-step meter test to find out whether water is leaking, how fast, and whether the loss is in the supply pipe or inside the house.
Keep reading