5.0 · 90+ Google reviews

One number for boilers, heating, plumbing and electrics.

Cardiff and South Wales since 2010. Gas Safe registered, Checkatrade approved, and now fitting air conditioning too. The quote is the price, and the same engineer comes back.

Open 7am – 7pm · 24/7 emergency line

It's urgent? Call Nigel 07545 125 168 Free · No obligation Get a fixed price

Provided a full service for our boiler. Fantastic communication from the beginning. No hidden costs.

Fflur Gwen Cardiff · Boiler service · Google review

15 years in Cardiff & South Wales
90 + real customer reviews
5.0 average on Google
7am–7pm real engineer answers

What we do

Pick the job. We handle the trade.

Boilers, plumbing, central heating, bathrooms, gas work, electrics and air conditioning, with clear pricing, tidy work and one number to call afterwards.

10-year warranty

Boiler swaps & installation

Combi boiler swaps across Cardiff. Worcester, Vaillant and Viessmann fitted with up to a 10-year manufacturer warranty, most swaps done in a day. From £1,895.

Worcester / Vaillant / Viessmann choice
Flue routing or extension
Powerflush included
Smart thermostat + zoned controls

Combi swap in a day · old boiler taken away

Boiler repair & servicing

Same-day repairs, annual services, and landlord gas safety certificates. Most boilers fixed first visit, most parts on the van.

Common heat-exchanger faults
Pump replacements (Wilo / Grundfos)
Diverter valve / 3-way valve
PCB or display replacement

Same-day callout · most parts on the van

Up to £9,000 government grant

Air source heat pumps

Air source heat pump installs in Cardiff. We handle the Boiler Upgrade Scheme paperwork — up to £9,000 off — design the system to your house, and pair with UFH or upgraded radiators where needed.

Survey-led design · we handle the BUS paperwork

Bathroom Installation

Full bathroom refits across Cardiff, covering design, plumbing, tiling, electrics, all in-house. Fixed-price quotes from £6,500.

In-house design, plumbing, tiling, electrics

EICR safety inspections

Electrical Installation Condition Reports for landlords and homeowners. Required every 5 years for rentals. Booked, attended, certificate in 48 hours.

NICEIC certificate · 48-hour turnaround

Central heating & power flushing

Radiators, system upgrades, underfloor heating, balancing and full powerflushes that cure cold-at-the-bottom rads, slow-warming rooms, and short-cycling boilers.

Cures cold rads & short-cycling boilers

24/7

24/7 Emergency Callout

Burst pipes, no heat in winter, suspected gas leak. Call now and Nigel will pick up, even at 2am.

Cardiff & South Wales · phone answered 24/7

Wall-mounted air conditioning unit in a Cardiff living room

New for 2026

We fit air conditioning now, too.

Wall-mounted split systems for Cardiff homes and small commercial units. Cooling for the two weeks a year you need it, and efficient heating for the loft conversion or home office the radiators never quite reach. Surveyed properly first, then a fixed price in writing.

See how air con works

Heats and cools one unit, both jobs
Proper survey sized, not guessed
F-Gas engineer does the refrigerant work

Built on craft

Built on fifteen years of doing the job properly the first time.

PHBLUE started in 2010 with a single van and one rule: leave the house tidier than we found it. Fifteen years later, that's still the rule. Most of our work comes from word of mouth, neighbours telling neighbours, landlords telling other landlords, and the occasional builder calling in a favour.

We're Gas Safe registered, Checkatrade approved, and we work with qualified electrical contractors for any notifiable electrical work. Certificates are provided where applicable. The paperwork matters because it's how customers check the work is being done properly.

What we don't do: hard sells, surprise charges, or rush a job to fit one more in. The quote is the price. The work is done when it's done right.

Real engineer answers the phone
Written quotes no provisional sums
Tidy work house left as we found it
Local Cardiff 15 yrs in the patch
Qualified trades Gas Safe + certified contractors

Nigel Phillips Founder & lead engineer · PHBLUE

Soldering a copper joint under a sink — On the tools Cardiff · CF11

New combi boiler fitted in a Cardiff home — New combi fitted Cardiff boiler swap

Finished bathroom refit with teal metallic tiling — Finished work Bathroom refit

How we work

Three steps. No surprises.

The same process for a leaky tap, a boiler repair or a larger installation. Clear, written down where needed, never improvised on the doorstep.

Job photos and a postcode coming in by message — Phone / WhatsApp

Call or message us

Phone, WhatsApp or web chat. We aim to reply inside the hour during the day, and overnight messages are answered first thing.

An itemised quote being written out — Written quote

Free, honest quote

Clear pricing before work starts. Smaller jobs can often be priced from photos; bigger jobs get a written quote after a proper look.

Shower cabin being installed — Install in progress

Job done right

Tidy work, the house left as we found it, the old kit taken away. Itemised invoice, full guarantee, and annual service reminders. We don't disappear after the invoice.

Where we work

Cardiff, the Vale, and a short drive beyond.

One yard in Llandough, ten regular postcodes. Most of our work lands within 25 minutes of the van. The pin shows the typical response radius. Anything outside, we'll still consider, just call first.

See every area we cover →

Yard Llandough Industrial Estate, Cardiff CF11 8RR Response 60 min · Cardiff & the Vale

Routinely covered:

Cardiff
Penarth
Barry
Caerphilly
Llandough
Roath
Rhiwbina
Whitchurch

Open larger map →

In their own words.

Real customer review excerpts from PHBLUE's existing public reviews, selected to show the kinds of work customers mention.

5.0 from 90+ reviews

15 yrsin Cardiff
90+verified reviews
Triage linegenuine emergencies

Boiler emergency

We had a boiler pressure issue leaving us with no hot water or heat. Arrived within the hour and fixed. Reasonable after hours call out rate and very friendly.

Plumbing

If you look for a professional plumber who is very skilled, polite, tidy and communicative look no further. Thank you Nigel for installing our shower.

Boiler service

Provided a full service for our boiler. Fantastic communication from the beginning. No hidden costs. Efficient and friendly service. Reliable, professional and trustworthy.

Boiler install

Great guy installed my boiler, very professional turned up when he said and done the job, definitely recommend.

Gas safety

Request a boiler service and gas safety certificate for a property that I was going to rent. Nigel's depth of knowledge was excellent.

Radiators

Installed two radiators for me for a very reasonable price. He did an excellent job and is definitely experienced and knowledgeable.

From the journal

Plain answers,monthly.

A short, useful article every month covering the questions Cardiff homeowners ask before they call.

Browse the archive

Common questions

The questions we hear most.

How quickly can you come out for an emergency?

For genuine emergencies (gas leak, no heat in winter, burst pipe) we aim to be on site within 60 minutes anywhere in Cardiff and within 90 minutes for Penarth, Barry, and the Vale. Out of hours, your call goes to a triage line that wakes Nigel for true emergencies.

Do you charge a call-out fee?

No call-out fee for jobs we go on to quote. Diagnostic visits where we don't carry out work are charged at our standard hourly rate, which we'll always tell you about up front.

How does the heat pump grant work?

The Boiler Upgrade Scheme pays toward an air-source heat pump install at one of two rates. If your home currently runs on oil or LPG you get £9,000, an uplift for off-gas-grid homes that runs until 31 March 2027. If you're on mains gas it's £7,500. The voucher is applied for through the installer before the work starts, so you never handle the paperwork or the money. The grant is discounted at the point of sale.

Are you Gas Safe registered?

Yes, every gas engineer who works under PHBLUE is Gas Safe registered. You'll see our registration number on every quote, every invoice, and every Gas Safety Certificate. You can also verify us directly on the Gas Safe Register's public lookup.

What areas do you cover?

Cardiff and the surrounding South Wales region, primarily Cardiff, Penarth, Barry, Caerphilly, Llandough, Roath, Rhiwbina, Whitchurch, and Cowbridge. If you're nearby and we don't cover your postcode yet, drop us a message and we'll see what we can do.

Ready when you are

Whatever's broken, Nigel can fix it.

Phone answered by a real engineer. Same-day quote. Honest pricing, tidy work.

Same working day reply
Clear pricing before work starts
Gas Safe · NICEIC · Checkatrade