KB Heating & Plumbing — Gas Safe Engineer Cardiff

KB Heating & Plumbing van — Cardiff gas engineers

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Our Story

Cardiff's straight-talking gas engineers & plumbers.

KB Heating & Plumbing is a Cardiff-based gas engineering and plumbing company serving homeowners and landlords across the city — from Roath and Cathays to Pontcanna, Splott, Grangetown and Cardiff Bay. Gas Safe registered, fully qualified and insured, the team provides a comprehensive range of gas and plumbing services from emergency callouts through to annual gas safety certificates, boiler repairs and gas appliance installations.

We're known for being straight with clients — finding the problem, explaining it clearly, fixing it properly and leaving. No call-out charge just to diagnose. No surprises on the invoice. If you're not sure whether your situation is an emergency, just call.

Gas Safe Registered — required by law for all gas work
Fully qualified, fully insured, locally owned
Same-day service available across Cardiff
Landlord CP12 certificates with tenant records

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Why Cardiff chooses us

Honest engineering, start to finish.

Six reasons homeowners and landlords across Cardiff keep our number saved — and call us first when something goes wrong.

Certified

Gas Safe Registered

Every engineer is on the Gas Safe Register — the only legal way to work on gas in the UK. ID checked before we start.

24/7

Emergency Response

45-minute average response across Cardiff. Local dispatch, not a national call centre — we know the streets.

Same-Day

Same-Day Service

Most boiler breakdowns, leaks and faults are dealt with the same day — often within hours of your call.

No Fee

Free Diagnosis

No charge just to tell you what's wrong. You only pay if you go ahead with the work — and you'll know the price first.

Guaranteed

Fixed Right or Free

If it's not fixed properly first time, you don't pay. We stand behind every job — full stop.

Local

Cardiff Owned

Based at Wyfan Place in Cardiff. Family-run, locally accountable, and proud to serve our community.

Our Services

Twelve gas & plumbing services — handled properly.

Browse what we do day-to-day across Cardiff. If it isn't here and it involves gas, water or heating — just call. There's a good chance we cover it.

24/7

Emergency Gas Engineer

Gas leak, no heating, boiler shutting down, smell of gas — these aren't things to wait on. Our 24/7 emergency line is answered around the clock, with a 45-minute average response across Cardiff.

Gas leak detection & make-safe
Boilers cutting out / lockouts
No hot water or heating

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CP12

Gas Safety Certificate

Full CP12 inspection for landlords and homeowners — every gas appliance checked, every flue tested, every result documented. Booked, completed and emailed the same week, often the same day.

All gas appliances tested
Digital certificate emailed
Tenant records included

Book CP12

Annual

Landlord Gas Safety Check

Annual Regulation 36 compliance checks for rented properties in Cardiff. We coordinate access with your tenants, complete the check, and supply both you and the tenant with the records you're legally required to keep.

Regulation 36 fully compliant
Tenant copy supplied
Renewals reminded in advance

Schedule Check

Urgent

Gas Leak Detection

Professional leak finding with proper detection equipment — we trace, isolate, make safe and confirm clear. If you smell gas, leave the property, open windows, and call from outside. We'll be there fast.

Detection equipment on every van
Make-safe before repair
All-clear confirmation

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Same-Day

Boiler Repair

Cutting out, losing pressure, weird noises, error codes — we diagnose the fault, explain it in plain English, and tell you whether it's worth fixing or replacing before you spend a penny.

All major boiler brands
Free diagnosis — no surprise bills
Repair-or-replace honest advice

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Install

Gas Cooker Installation

Supply, disconnect, reconnect — Gas Safe certified cooker installs done right. Includes test, certificate of installation and disposal of the old appliance if needed.

Free-standing & range cookers
Certificate of installation
Old appliance removed

Book Install

Kitchen

Gas Hob Installation

Kitchen refit gas hob connections — best booked before the worktop goes down. We coordinate with your kitchen fitter to make sure everything lines up the first time.

Hob isolation valve fitted
Worktop coordination
Tested & certified

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Period

Gas Fire Service

Cleaning, flue check, combustion check — keep your gas fire running safely and efficiently. We specialise in Cardiff's period properties where flues and chimneys need experienced eyes.

Full clean & safety check
Flue integrity test
Period property specialists

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Pipework

Gas Pipe Installation

New gas pipework for extensions, loft conversions and appliance moves. Sized correctly, routed neatly, pressure tested before sign-off.

Extensions & conversions
Correct pipe sizing
Pressure tested & signed off

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Tested

Gas Line Testing (Tightness Test)

A pressure test for gas pipework — after work has been done, or just as a peace-of-mind check. Required after gas pipe installation and recommended periodically for older systems.

Formal pressure test
Pass/fail certificate
Older systems welcome

Book Test

Repair

Gas Appliance Repair

Boilers cutting out, gas fires playing up, cookers not igniting — fault finding and repair across all gas appliances. We diagnose first, then quote.

Boilers, fires, cookers, hobs
Intermittent fault finding
Repair-or-replace advice

Book Repair

Plumbing

General Plumbing

Emergency and scheduled plumbing — leaks, drips, drainage, tap replacements, ball valves, isolators, the lot. Same engineers, same straight pricing, same fixed-right guarantee.

Leak repair & pipe work
Taps, valves, isolators
Drainage & emergencies

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Our Customers

What Cardiff homeowners say.

01 / 04

Boiler died on a Sunday night with two small kids in the house. KB answered within minutes, was at our door inside an hour, and had us back on by midnight. Straight, polite, fair price — exactly what you want in an emergency.

★★★★★

Roath Homeowner

Cardiff

02 / 04

I manage four flats in Cathays and the CP12 renewals used to be a headache. KB handles all of them on one day, sends the certificates straight through to me and the tenants, and gives me a heads-up before they're due each year. Brilliant.

★★★★★

Cathays Landlord

Cardiff

03 / 04

New kitchen, new gas hob, and I needed it done before the worktop went down. KB rang the kitchen fitter directly, sorted out timings, came in, did the hob and the testing in one visit. Properly tidy work.

★★★★★

Pontcanna Homeowner

Cardiff

04 / 04

Smelled gas in the kitchen and panicked. Called KB, they walked me through what to do until they got here, found the leak in the cooker connection, made it safe and fitted a new isolator. Calm, professional, didn't make me feel daft. Saved my evening.

★★★★★

Llandaff Homeowner

Cardiff

Frequently Asked

Straight answers to common questions.

Ten of the questions Cardiff homeowners and landlords ask us most often. If yours isn't here, just call — we'll happily walk through it.

Call 07812 510121

Yes. Every engineer at KB Heating & Plumbing is on the Gas Safe Register — the only legal way to work on gas in the UK. We'll happily show our ID before starting any job, and you can check us on the Gas Safe Register directly.

Yes — we serve every Cardiff postcode including Roath, Canton, Pontcanna, Cathays, Llandaff, Grangetown, Splott, Cardiff Bay and Pontprennau, plus surrounding South Wales areas. We're based at 13 Wyfan Place, Cardiff CF14 3DT.

No. Diagnosis is free — we'll come out, find the problem and tell you what it is and what it costs to fix. You only pay if you decide to go ahead with the work. No surprises on the invoice.

Our average response across Cardiff is 45 minutes. Because we're locally dispatched (not a national call centre), most genuine emergencies in central Cardiff are seen within the hour. If you smell gas, leave the property and call us from outside.

Often yes, if there's availability and access. Most CP12 inspections take about 30–45 minutes per property and the certificate is emailed the same day. Call us and we'll tell you straight away whether we can fit you in.

Under Regulation 36 of the Gas Safety Regulations, every rented property in the UK with gas appliances must have an annual gas safety check by a Gas Safe registered engineer. We complete the check, provide you with the certificate, and supply a copy for your tenants — fully compliant with your legal obligations.

Leave the property immediately, open windows if it's safe to do so on your way out, do not switch electrics on or off, and call the National Gas Emergency line on 0800 111 999. Then call us — we'll come out, find the leak, make it safe and confirm the property is clear.

Yes — we install free-standing cookers, range cookers and built-in gas hobs across Cardiff. For kitchen refits, it's best to get us in before the worktop goes down so we can route the gas supply neatly. Every install comes with a certificate.

Honestly — sometimes a £150 repair gets you another 5 years; sometimes it's throwing good money after bad. We'll diagnose it, tell you what's wrong, give you the cost to fix, and let you know if we'd recommend replacing. The decision stays with you.

Bank transfer or card payment on completion. You'll know the price before we start work, and we'll send you a proper invoice. No deposits for standard jobs.

Cardiff's trusted gas engineers & plumbers — straight answers, proper fixes.

5-Star Reviews