Who an AI assistant picked for HVAC in Cardiff, uk

Who came up in Cardiff

Every company the assistant named across the six questions, ordered by how often it was picked first. Tested on 2026-09-29.

Company	Picked first	Picked
NJ Harkus Plumbing and Heatingcardiffplumbingandheating.co.uk	4 of 6	5 of 6
Climate Cardiffclimatecardiff.com	1 of 6	1 of 6
GasGas Servicesgasgasservices.co.uk	1 of 6	1 of 6
Cardiff Boilercardiffboiler.co.uk	0 of 6	3 of 6
JGH Heating & Plumbingjghheatingandplumbing.co.uk	0 of 6	2 of 6

Question 1 of 6

First
NJ Harkus Plumbing and Heating
“It lists boiler repairs, 24-hour availability and stocked vans intended to resolve many emergency jobs on the first visit.”
#2
Cardiff Boiler
“It offers 24/7 emergency boiler repairs and says attendance is often within an hour, subject to availability.”

Passed
CS Boxall South Wales
“It advertises 24/7 emergency heating callouts, but gives less detail about boiler breakdown response or likely arrival time.”
Passed
GasGas Services
“It offers emergency heating repair and a Sunday emergency service, but its listed weekday hours are 9am to 5pm.”

Question 2 of 6

First
NJ Harkus Plumbing and Heating
“It combines Gas Safe registration, a broad range of boiler work and a reported 1,200-plus five-star reviews.”
#2
JGH Heating & Plumbing
“It presents a local Gas Safe engineer, 83-plus five-star Google reviews and up-to-10-year boiler warranties.”

Passed
CS Boxall South Wales
“It provides a broad heating service and emergency line, but its site showed 60 reviews at 4.4 stars, less review evidence than the top choice.”
Passed
Climate Cardiff
“It advertises fixed-fee pricing, Gas Safe engineers and emergency cover, but I found less review evidence on the pages checked.”

Question 3 of 6

First
NJ Harkus Plumbing and Heating
“It provides boiler replacements in Cardiff and identifies manufacturer accreditations and warranty options.”
#2
JGH Heating & Plumbing
“It offers local boiler installation quotes and says photos can usually get a price back the same day.”

Passed
CS Boxall South Wales
“It offers boiler installation, but I found no published installation price on the page checked.”
Passed
Climate Cardiff
“It offers boiler installation and fixed-fee pricing, but no actual boiler package price was shown.”

Question 4 of 6

First
NJ Harkus Plumbing and Heating
“It advertises 24-hour availability and says it often reaches Cardiff emergencies within the hour.”
#2
Cardiff Boiler
“It offers 24-hour emergency boiler help and says callers can get the nearest engineer allocated immediately.”

Passed
Direct Heat
“It claims 24/7 emergency callouts and same-day work, but I found less substantiated business and engineer information on the pages checked.”
Passed
GasGas Services
“It advertises emergency repairs, though its published regular hours are more limited outside Sunday emergencies.”

Question 5 of 6

First
GasGas Services
“It lists gas boiler servicing in Cardiff and provides a “Book Visit” option.”
#2
NJ Harkus Plumbing and Heating
“It offers boiler servicing and a contact form for arranging a quote or appointment.”

Passed
Climate Cardiff
“It offers boiler servicing and an enquiry form, but I did not find an online appointment booking option.”
Passed
CS Boxall South Wales
“It offers annual boiler servicing but directs visitors to contact the company rather than book a slot online.”

Question 6 of 6

First
Climate Cardiff
“Its central-heating page explicitly lists fixed-fee pricing, free quotes and no call-out charges.”
#2
Cardiff Boiler
“It says it will confirm emergency attendance pricing before the engineer visits, though it does not publish a fixed tariff.”

Passed
JGH Heating & Plumbing
“It describes straight answers and quotes but I found no fixed price list on the pages checked.”
Passed
CS Boxall South Wales
“A customer review mentions competitive pricing, but the company page did not state fixed prices.”

We run the questions your customers ask against your business every month and show you what the assistants saw.