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Cardiff
Your trusted plumber in Cardiff
Plumbers in Cardiff — boiler repair, emergency leaks, drain unblocking and central heating.
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Cardiff
Plumbing & heating
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What We Do
Our Services in Cardiff
What HnO Plumbers can help with
Boiler Repair
Diagnosis and repair of faulty boilers in Cardiff homes and businesses.
Emergency Leaks
Fast response to burst pipes and water leaks in Cardiff properties.
Drain Unblocking
Clearing blocked drains, toilets and sewers across Cardiff.
Central Heating
Installation, repair and maintenance of heating systems in Cardiff.
Bathroom Fitting
Design, supply and installation of bathrooms in Cardiff.
General Plumbing
Taps, pipes, radiators and routine plumbing work throughout Cardiff.
In detail
What each job covers
Emergency Leaks
Locate the source of the leak. Isolate the water supply if possible. Assess damage. Repair or replace the damaged pipe or fitting. Dry the area and check for mould risk.
When you need it. Water dripping from ceiling or walls, puddles under sinks, or visible cracks in pipes.
Before you get in touch. Find your water stopcock location. Take photos of visible damage. Mop up standing water if safe.
Drain Unblocking
Access the blocked section via inspection chamber or trap. Use rods, jet or suction equipment to clear debris. Flush the line to confirm clearance. Inspect for damage if needed.
When you need it. Sink, bath or toilet drains slowly or backs up. Multiple drains block at once. Foul smell from drains.
Before you get in touch. Identify which drain is blocked. Note when it started. Avoid pouring more water down it.
Central Heating
Design layout with customer. Install or upgrade boiler, pipes, radiators and controls. Balance the system. Commission and test all zones. Demonstrate operation and controls.
When you need it. Boiler end of life. Moving house and system is old. Rooms heat unevenly. Rising fuel bills.
Before you get in touch. Know your current heating type. Take meter readings. Measure radiator locations or take photos.
Bathroom Fitting
Plan layout and specifications with customer. Remove old suite and fittings. Install new basin, toilet and bath. Connect hot and cold supplies. Install waste and ventilation. Tile and finish.
When you need it. Bathroom is outdated, damaged, or no longer fits needs. Leak damage. Lifestyle change requires accessibility.
Before you get in touch. Measure the space precisely. Collect photos and style ideas. Check water pressure and drainage type.
General Plumbing
Repair or replace taps, valves, pipes and connectors. Fix ballcock and cistern faults. Bleed radiators. Refit loose pipes. Minor work typically done same visit.
When you need it. Dripping taps, frozen pipes, radiators not heating, low water pressure, or loose fittings.
Before you get in touch. Identify which tap or appliance is faulty. Turn off relevant isolator valve if you know its location.
Why Choose Us
The Cardiff plumber you can actually trust
- Based in Cardiff, covering the surrounding area
- Covering Boiler Repair, Emergency Leaks, Drain Unblocking and more
- Message us on WhatsApp to talk through what you need
At a glance
- Trade
- Plumbers
- Based in
- Cardiff
- Enquiries
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Good to know
Common questions
General guidance about plumbers in the UK, not specific to any one business.
How do I find my water stopcock?
The stopcock is usually under the kitchen sink, in the hallway under floorboards, or at the boundary of the property. Knowing its location allows water to be shut off quickly in an emergency.
Can I fix a leaking tap myself?
Simple jobs like replacing a washer can be DIY, but modern ceramic disc taps often need professional tools. Leaks at pipe connections usually need new fittings to stop properly.
Why is my boiler pressure rising and falling?
Pressure changes with temperature. Normal range is 1–2 bar when cold. Repeated cycling suggests a faulty pressure relief valve or expansion vessel. Continuous rise indicates a leak.
What causes frozen pipes?
Freezing occurs in unheated spaces like lofts, under floors or outside walls. Pipes slow water flow and contract, causing blockage. Lagging and gentle heat can thaw them.
Do all radiators need bleeding?
Air enters radiators over time through small leaks or during servicing. Air at the top prevents hot water from filling the radiator. Bleeding lets air out and restores heat.
What should I do if my drain keeps blocking?
Recurring blocks suggest hair, fat or roots in the line. A one-off clear solves it short-term. Persistent issues need professional inspection to identify and remove the root cause.
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Cardiff & surrounding areas
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