Which plumbers in Cardiff AI recommends

Asked on 14 October 2026: “Who are the best plumbers in Cardiff?” and “Can you recommend good plumbers in Cardiff?”. 8 answers from ChatGPT, Gemini, Google AI Overviews, Perplexity.

Across eight recorded answers from four assistants asked twice each, 29 Cardiff plumbing businesses were named and 24 of those were named by only one assistant. Three assistants mentioned N.J Harkus Plumbing and Heating Ltd and three mentioned DM Pritchard Plumbing and Heating, while Phixing Plumbing and HVAC Solutions and Llandaff Heating were each named by two assistants and SMC Plumbing and Heating was named by one. Cited websites included hipages.com.au, mybuilder.com, cardiff.co.uk, myjobquote.co.uk and reddit.com.

CChatGPTGGeminiPPerplexityAGoogle AI Overviews

Named by the assistants

29 businesses named; 83% by only one assistant. Ordered by how often they were named.

N.J Harkus Plumbing and Heating LtdCGPA
DM Pritchard Plumbing and HeatingCGPA
Phixing Plumbing and HVAC SolutionsCGPA
SMC Plumbing and HeatingCGPA
Llandaff HeatingCGPA
RM Plumbing & Electrical LtdCGPA
Cardiff PlumbingCGPA
CH4 Plumbing & HeatingCGPA
Aqua Flow Plumbing & HeatingCGPA
PTH PlumbingCGPA
SMC Plumbing & HeatingCGPA
MJ Flook PlumbingCGPA

Websites the assistants cited: hipages.com.au, mybuilder.com, cardiff.co.uk, myjobquote.co.uk, reddit.com, google.com, trustedtraders.which.co.uk, facebook.com

What the assistants said, not our ranking or an endorsement. Is your business missing? The free check shows why.

More in Cardiff

Dentists31 named Electricians30 named Accountants34 named Lawyers27 named Estate agents33 named Car repair25 named Hair salons26 named Gyms30 named Physiotherapists34 named Skin clinics22 named Wedding photographers33 named Interior designers18 named Movers14 named Driving schools35 named Tutors and coaching24 named Vets27 named Web designers34 named Digital marketing agencies34 named Caterers22 named

Plumbers in other cities

Belfast24 named Birmingham23 named Bradford24 named Brighton24 named Bristol35 named Coventry26 named Edinburgh18 named Glasgow27 named Leeds22 named Leicester25 named Liverpool27 named London30 named

How we ran it

We asked ChatGPT, Gemini, Perplexity and Google AI Overviews the same two questions for each category and city, worded the way customers ask, from the city’s own country.

We recorded every answer and listed the businesses each one named. Directories, review sites and marketplaces are not counted. The short overview is written from these counts only.

This shows what the assistants said on the date shown, not our own ranking or an endorsement. Answers change from week to week.

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