Plumber in Cardiff: 10 Local Plumbing Companies to Compare

When a pipe starts leaking, the boiler stops behaving or a bathroom project reaches the plumbing stage, the first challenge is not finding any plumber in Cardiff. It is working out what kind of help the job actually needs. A dripping tap, a burst pipe, a heating fault and a full bathroom installation may all lead to the same search, but they do not require the same first conversation.

Cardiff is the city where Welsh tradition meets a modern urban centre in motion, and that is visible in the practical shape of a plumbing job. A flat close to Cardiff Central may need access and timing discussed before a visit. A home in Canton, Pontcanna or Llandaff may have a different property layout from a newer development near Cardiff Bay. A landlord with a property around Cardiff University may be working to a handover date, while a household elsewhere in the City and County of Cardiff may simply need a safe repair. Those are useful contexts, not assumptions about any provider’s service area.

This guide is an editorial comparison of 10 businesses displayed for plumber-related searches in Cardiff. It uses the supplied category, rating, review count, displayed address, phone number, website, booking route and opening status. It does not invent prices, qualifications, emergency guarantees, heating specialisms or customer claims. Where the listing does not establish a fact, the sensible next step is to ask directly.

What to establish before calling a Cardiff plumber

Describe the fault clearly

Tell the plumber what is happening, where it is happening and whether the problem is getting worse. Useful details include visible water, loss of pressure, a leaking radiator, no hot water, a blocked waste, a faulty toilet, a heating concern or damage around a fixture. Photographs may help with an initial discussion, but they do not replace an inspection where the cause is uncertain.

Separate plumbing from heating

Several businesses in this pool use “plumbing and heating” in their names, while others are listed simply as plumbers. Do not assume that every plumber handles boilers, gas work, central heating or electrical work. Ask which part of the job the business can take on and whether another qualified professional is required.

Confirm the practical visit details

Give the exact property address rather than relying on a locality or landmark. Cardiff city centre, Cardiff Central, Canton, Pontcanna, Llandaff, Roath and Cardiff Bay are useful geographic references, but a business name, customer area or nearby station does not prove a service radius. Ask about arrival windows, access, parking or building instructions directly.

Ask what the price will cover

A useful quote should explain labour, parts, diagnostic work, removal of damaged items, making good and any follow-up visit where relevant. The available data contains no comparable prices, so request like-for-like estimates rather than comparing business names or ratings alone.

Quick decision summary

• Largest displayed review profile: N.J Harkus Plumbing and Heating Ltd shows 5.0 from 1,250 reviews.
• Strong review profiles: DM Pritchard Plumbing and Heating shows 5.0 from 274 reviews; SMC Plumbing and Heating shows 5.0 from 216; Llandaff Heating shows 4.9 from 197; MPH PLUMBERS shows 4.7 from 170.
• Clearest central Cardiff address in the pool: DM Pritchard Plumbing and Heating is displayed at Cwrt Sofia, The Basement, 49 Cathedral Rd.
• Displayed 24-hour status: N.J Harkus, RM Plumbing & Electrical, Llandaff Heating, Flush Away Plumbing, Plumbaaid Cardiff and DM Pritchard Plumbing and Heating show Open 24 hours.
• Best value: Not awarded. No comparable prices or standard job scopes are supplied.
• Best overall: Not awarded as an objective ranking. The right provider depends on the fault, the required qualification and the confirmed availability.

Plumbers in Cardiff to compare

1. N.J Harkus Plumbing and Heating Ltd

Positioning. N.J Harkus Plumbing and Heating Ltd is listed as a plumber at 180 Ffordd James McGhan, with 5.0 from 1,250 reviews, Open 24 hours, +44 7859 896019, and a website. It has the largest visible review profile in this comparison and a name that combines plumbing with heating.

Evidence-based strengths. The review count is significantly larger than the other displayed profiles, giving the business a substantial public record to consider. The direct phone number, website and displayed address also make it straightforward to begin an enquiry.

Best fit for. N.J Harkus is a strong first comparison for a customer who needs to discuss a general plumbing or heating problem and wants a provider with a large visible review base. Explain whether the work concerns water, drainage, heating or a fixture rather than assuming the broad name answers the technical question.

Operational reality. Open 24 hours does not establish emergency attendance, response time or out-of-hours pricing. The supplied data does not confirm boiler work, gas qualifications, central-heating systems, prices, insurance, guarantees or service radius. Ask what the initial call covers, whether the visit is diagnostic and which parts of the job the business is qualified to undertake. Confirm the Ffordd James McGhan address and access details when booking.

2. DM Pritchard Plumbing and Heating

Positioning. DM Pritchard Plumbing and Heating is listed as a plumber at Cwrt Sofia, The Basement, 49 Cathedral Rd, with 5.0 from 274 reviews, Open 24 hours, +44 7464 059083, and a website. The displayed address places the listing within a central Cardiff context without requiring a claim about its wider coverage.

Evidence-based strengths. Two hundred and seventy-four reviews at 5.0 provide a substantial visible profile. The combined plumbing-and-heating name, direct phone number and full displayed address make this a useful comparison for a customer whose problem may involve more than a cold-water repair.

Best fit for. DM Pritchard is worth considering for an enquiry where plumbing and heating need to be discussed together. A customer near Cardiff city centre, Pontcanna or the civic area can provide the exact property address and ask whether the business attends the site.

Operational reality. The displayed status is Open 24 hours. It does not confirm immediate attendance or the availability of a particular heating service. Prices, qualifications, Gas Safe status, insurance, guarantees and detailed services are not supplied. Ask whether the quoted work is plumbing, heating, diagnosis or a combination, and what happens if another trade or qualification is required.

3. SMC Plumbing and Heating

Positioning. SMC Plumbing and Heating is listed as a plumber at 41 Llanon Rd, with 5.0 from 216 reviews, Open · closes 5 pm, +44 7377 500077, and a website. Its name gives a clear plumbing-and-heating identity, while the profile has a large visible review count.

Evidence-based strengths. The 5.0 rating from 216 reviews is one of the strongest review profiles in the pool. The address, phone number and website provide clear ways to identify the business and ask about the job.

Best fit for. SMC is a useful comparison for a planned plumbing or heating enquiry where the customer wants to establish the exact scope before arranging work. Describe the fault, appliance or system involved and ask whether the business handles that type of job.

Operational reality. Google shows Open · closes 5 pm. That is not evidence of emergency availability outside those hours. The supplied data does not confirm boiler servicing, gas work, qualifications, insurance, guarantees, prices or response times. Ask whether the Llanon Road address is the operating base and whether the provider currently attends your part of Cardiff.

4. Llandaff Heating

Positioning. Llandaff Heating is listed as a plumber at 9 Victoria Ave, with 4.9 from 197 reviews, Open 24 hours, +44 7909 855013, and a website. The business name references Llandaff, an approved Cardiff locality, while the displayed category is plumber.

Evidence-based strengths. The business has a substantial visible profile of 197 reviews at 4.9. The Llandaff name and Victoria Avenue address provide a specific local identity, and a direct phone number and website support an initial enquiry.

Best fit for. Llandaff Heating is a natural comparison for a Cardiff customer who wants to discuss a plumbing or heating-related problem with a business carrying a clear local name. A property in Llandaff or elsewhere in the City and County of Cardiff should still be confirmed directly with the provider.

Operational reality. Open 24 hours is the displayed status, not a guarantee of urgent attendance. The data does not establish central-heating systems, boiler work, gas qualifications, prices, insurance or guarantees. Ask what the business can diagnose, what information it needs before visiting and whether out-of-hours work is available on the day you call.

5. MPH PLUMBERS

Positioning. MPH PLUMBERS is listed as a plumber at 376 Newport Rd, with 4.7 from 170 reviews, Open · closes 5 pm, +44 29 2167 3516, and a website. It has a substantial review profile and a clear displayed address.

Evidence-based strengths. One hundred and seventy reviews provide a meaningful public profile, while the plumber category and direct contact details make the service fit clear. The website offers another route for gathering current information, although its content is not included in the supplied provider data.

Best fit for. MPH is a sensible comparison for a general plumbing quote or repair enquiry. Explain whether the job is in a domestic, rented or commercial property and whether the issue is urgent, but do not assume a particular emergency service from the listing alone.

Operational reality. Google shows Open · closes 5 pm. Prices, qualifications, gas work, heating systems, insurance, guarantees, response times and service radius are not supplied. Confirm whether 376 Newport Road is the operating location, whether the provider covers the exact property and what the first visit includes.

6. RM Plumbing & Electrical Ltd – Cardiff

Positioning. RM Plumbing & Electrical Ltd – Cardiff is listed as a plumber at 73 Brithdir St, with 5.0 from 86 reviews, Open 24 hours, +44 29 2169 0044, and a website. Its name identifies both plumbing and electrical work, although the displayed category is plumber.

Evidence-based strengths. The 5.0 rating from 86 reviews gives a strong visible profile. The combined business name may be relevant when plumbing work sits alongside an electrical issue, and the direct phone, address and website make the provider easy to contact.

Best fit for. RM may suit a customer whose project includes connected plumbing and electrical questions, such as a bathroom or kitchen alteration. Ask which parts of the work are covered and whether separate qualified tradespeople are involved.

Operational reality. The listing shows Open 24 hours, but that does not prove round-the-clock attendance or an emergency guarantee. The supplied data does not confirm electrical qualifications, gas status, prices, insurance, guarantees or service radius. Request a clear division between plumbing, electrical and any other work before accepting a quote.

7. Flush Away Plumbing Ltd.

Positioning. Flush Away Plumbing Ltd. is listed as a plumber, with 5.0 from 86 reviews, Open 24 hours, +44 7841 785060, a website and a Book online option. No street address is displayed in the supplied extract.

Evidence-based strengths. The business has 86 reviews at 5.0, a direct phone number, website and an online booking route. The plumbing category is a direct match for the search intent.

Best fit for. Flush Away is worth considering when the customer values an online enquiry route or wants a general plumbing conversation. Describe the leak, blockage, fixture or water issue and ask whether the online booking is for diagnosis, repair or a specific service.

Operational reality. Open 24 hours does not establish response time, emergency attendance or pricing. No address, service radius, qualifications, insurance, guarantees or detailed work list is supplied. Confirm the Cardiff operating location and whether the business attends the property before relying on the city search context.

8. Plumbaaid Cardiff

Positioning. Plumbaaid Cardiff is listed as a plumber at 20 Sunnybank Cl, with 4.7 from 38 reviews, Open 24 hours, +44 29 2066 6620, and a website. The Cardiff name and displayed address give the listing a clear local signal.

Evidence-based strengths. Thirty-eight reviews at 4.7 provide useful visible evidence, while the address, phone number and website make it easy to begin a quotation or repair enquiry. The plumber category is direct and unambiguous.

Best fit for. Plumbaaid is a practical comparison for a general household plumbing problem. Give the precise property location and explain whether the problem is active, intermittent or related to a fixture, heating system or drainage point.

Operational reality. The listing shows Open 24 hours, but no response guarantee, emergency pricing or immediate attendance is confirmed. Prices, qualifications, insurance, guarantees, service scope and radius are not supplied. Confirm what the Sunnybank Close address represents and what the first call-out includes.

9. The Cardiff Plumbers

Positioning. The Cardiff Plumbers is listed as a plumber at 26 Barmouth Rd, with 4.8 from 20 reviews, Open · closes 12 am, +44 29 2010 3009, and a website. The business name is directly aligned with the city-level search intent.

Evidence-based strengths. The listing provides a clear plumber category, a Cardiff-focused name, a displayed address, phone number and website. The 4.8 rating from 20 reviews offers a useful but smaller public profile than the leading providers.

Best fit for. The Cardiff Plumbers may suit a customer seeking a local general plumbing quote or an enquiry later in the day. Ask whether the displayed closing time means the office, phone line or on-site service availability.

Operational reality. Google shows Open · closes 12 am. This does not establish 24-hour emergency attendance. Prices, qualifications, gas status, insurance, guarantees, response times and service radius are not supplied. Confirm the Barmouth Road location and whether the business takes the specific type of work required.

10. N R Plumbing Ltd

Positioning. N R Plumbing Ltd is listed as a plumber, with 5.0 from 133 reviews, Open · closes 5 pm, +44 7935 138066, and a website. No street address is displayed in the supplied extract.

Evidence-based strengths. One hundred and thirty-three reviews at 5.0 provide a substantial visible profile. The plumber category, phone number and website create a clear route to establish the job details.

Best fit for. N R Plumbing is a useful comparison for a planned repair, installation enquiry or general plumbing quote. Ask about the property type, fault and timing, then confirm whether the business attends your exact Cardiff address.

Operational reality. Google shows Open · closes 5 pm. The supplied data does not show an address, service radius, prices, qualifications, insurance, guarantees, heating or emergency services. Do not infer a Cardiff neighbourhood or service area from the search context. Confirm location and availability directly before arranging access.

Comparison table

Provider	Displayed category	Rating / reviews	Address shown	Displayed hours / contact
N.J Harkus Plumbing and Heating Ltd	Plumber	5.0 (1,250)	180 Ffordd James McGhan	Open 24 hours; +44 7859 896019
DM Pritchard Plumbing and Heating	Plumber	5.0 (274)	Cwrt Sofia, The Basement, 49 Cathedral Rd	Open 24 hours; +44 7464 059083
SMC Plumbing and Heating	Plumber	5.0 (216)	41 Llanon Rd	Closes 5 pm; +44 7377 500077
Llandaff Heating	Plumber	4.9 (197)	9 Victoria Ave	Open 24 hours; +44 7909 855013
MPH PLUMBERS	Plumber	4.7 (170)	376 Newport Rd	Closes 5 pm; +44 29 2167 3516
RM Plumbing & Electrical Ltd – Cardiff	Plumber	5.0 (86)	73 Brithdir St	Open 24 hours; +44 29 2169 0044
Flush Away Plumbing Ltd.	Plumber	5.0 (86)	Not displayed	Open 24 hours; +44 7841 785060; book online
Plumbaaid Cardiff	Plumber	4.7 (38)	20 Sunnybank Cl	Open 24 hours; +44 29 2066 6620
The Cardiff Plumbers	Plumber	4.8 (20)	26 Barmouth Rd	Closes 12 am; +44 29 2010 3009
N R Plumbing Ltd	Plumber	5.0 (133)	Not displayed	Closes 5 pm; +44 7935 138066

How to choose a plumber in Cardiff

For an active leak or burst pipe

Prioritise clear communication and safety. Explain where the water is, whether the stopcock is accessible and whether electricity is affected. A displayed 24-hour status is not a guarantee of immediate attendance, so ask for a realistic arrival window and any call-out terms before agreeing to work.

For heating or hot-water problems

Start with the businesses whose names include plumbing and heating, such as N.J Harkus, DM Pritchard or SMC, but confirm the exact service and qualifications. Do not assume that a plumber is authorised for every boiler, gas or heating task.

For bathroom or kitchen work

Ask whether the plumber handles only the pipework or also coordinates installation, fixtures, electrical work and making good. RM Plumbing & Electrical has a combined name, Complete project details and any other trades involved should be separated in the quote.

For a property near Cardiff city centre or Cardiff Central

Provide the full address and access instructions. Cardiff Central is a transport entity, not a provider service area. Ask about loading, parking, stairs, shared entrances and appointment windows rather than assuming the business can attend from its listed location.

For Cardiff Bay, Canton, Pontcanna or Llandaff

Use the locality to explain where the property is, not to assume a neighbourhood specialism. Llandaff Heating has Llandaff in its business name and a Victoria Avenue address, but no provider should be treated as covering every Cardiff locality without confirmation.

For landlords and student properties

Explain the tenancy deadline, tenant access, whether water can be isolated and whether the repair needs certification or a written invoice. The supplied data does not confirm landlord packages, student-property services or compliance documents, so ask directly.

For an online booking

Flush Away Plumbing Ltd. displays a Book online option. Confirm what the booking represents: a call, diagnosis, quotation or repair slot. An online route does not establish the price or scope.

FAQs

Which plumber has the largest visible review profile?

N.J Harkus Plumbing and Heating Ltd shows 5.0 from 1,250 reviews. DM Pritchard Plumbing and Heating shows 5.0 from 274, while SMC Plumbing and Heating shows 5.0 from 216. Review volume is a comparison signal, not a guarantee for a specific fault.

Are all the 24-hour listings emergency plumbers?

No. N.J Harkus, RM Plumbing & Electrical, Llandaff Heating, Flush Away Plumbing, Plumbaaid Cardiff and DM Pritchard show Open 24 hours. The supplied data does not confirm emergency response times, availability or out-of-hours prices.

Which providers mention heating?

N.J Harkus Plumbing and Heating, DM Pritchard Plumbing and Heating, SMC Plumbing and Heating and Llandaff Heating use heating-related wording. The listing names do not prove a particular boiler, gas or central-heating qualification, so confirm the exact requirement.

Can I compare prices from this article?

No. The provider data contains no comparable prices or standard scopes. Request written, like-for-like quotes that separate diagnosis, labour, parts, emergency call-out, follow-up visits and making good.

Does a Cardiff address prove coverage across the whole city?

No. A displayed address identifies the listing, not its full service radius. Give the exact property address in Cardiff or the City and County of Cardiff and ask whether the business currently attends there.

Is a plumber also qualified for electrical work?

Not necessarily. RM Plumbing & Electrical Ltd – Cardiff has a combined name, but the supplied category is plumber and the data does not establish qualifications. Ask who will perform each part of the job.

What should I do before the plumber arrives?

If safe, isolate the water supply, move belongings away from the leak, record visible damage and explain any access restrictions. If electricity is affected by water, treat it as an urgent safety matter and use appropriate professional or emergency guidance rather than waiting for a routine visit.

Should I choose the highest-rated provider?

Not automatically. Match the provider’s confirmed service to the problem, consider the review count, check availability and ask what the quote includes. A 5.0 from 20 reviews is different evidence from a 5.0 from 1,250.

Does “closes 12 am” mean emergency attendance?

No. The Cardiff Plumbers shows Open · closes 12 am, but this does not establish 24-hour attendance or an emergency guarantee. Confirm what hours apply to calls and on-site work.

Cardiff’s everyday infrastructure links its civic centre, university quarter, neighbourhood streets and Cardiff Bay, but the plumbing decision remains grounded in the fault itself. Explain the problem, confirm the relevant qualification, ask what the visit and quote cover, and compare providers on a like-for-like basis. That is more useful than treating a city name, a rating or a 24-hour label as a promise.