ATAG Heating Technology Partner

City and Guilds

Gas Safe Register

Glow Worm

Vaillant

bpec Certification Ltd - Unvented Hot Water

Mr Gareth Williams

Gareth Williams Heating was formed in 2007 and now has a strong customer base throughout Newport and South Wales. We specialise in Boiler Installations and as Approved Installers, through our manufacturing partner&#39;s we can offer peace of mind on New Boiler InstallationsServing Newport &amp; South Wales with over 36 years experience, we provide expert boiler installations and a full range of heating services to keep your home warm and comfortable.Why Choose Us?<ul><li>Installers of Atag, Vaillant, Glowworm and Baxi boilers.</li><li>Expert advice: We help you choose the right system for your needs.</li><li>Reliable service: Fast, friendly, and professional.</li><li>Transparent pricing: Free quotes with no hidden charges.</li></ul>

Boiler Installations 2025

Boiler Installations 2024

A Baxi heat only boiler installed in Newport. 

Another Vaillant ecoTEC Plus combi boiler installed in Cwmbran.

Vaillant ecoTEC plus 832 installed in Caerleon.

Boiler Installations 2023

Great day at the races courtesy of Glowworm and Plumbstop.

Me, Lorenzo and Dan at the races in the summer. 

Dan in full PPE.

Vaillant system boiler in Rogerstone

Expansion Vessel IMI Hydronics

Training at IMI Hydronics

VW Transporter

Double Radiator installed in a conservatory.

We extended the pipes from this radiator behind the TV and into the conservatory.

Emissions test on a Worcester Bosch boiler. 

We discovered this split flue on a recent Landlords certificate.

Dangerous flue found on a Landlords Certificate.

Designer Radiator Installation.

Atag Boiler Service

This new regulation is in force in England but we are ready when it comes into effect in Wales.

Atag are Boiler Plus ready. 

Remove a small radiator and re site a larger double radiator with Danfoss thermostatic valves. The customer didn't want us to get the floor up so we ran the pipes along the skirting board.

Radiator Installation.

Atag One Selfie

November 2017 Action.

We use Stelrad radiators and Danfoss thermostatic radiator valves.

New Radiator Installed

Gareth Williams Heating Ltd Vans

Gareth Williams Heating

Gas Fire Repair

We are supporting the show and the Installer Magazine.

Installer 2017

Here's Gareth back in 1987 servicing a back boiler

Gareth Williams

The customer had a water leak on a Worcester Bosch boiler and replaced the supply manifold.

Repairing a water leak.

If you look closely you can see the water spraying out. Our customer was lucky that no damage was done to the rest of the boiler.

Supply Manifold leaking.

The first annual service on this Worcester Bosch 34 Cdi Classic we Installed last year. The Magnetic Filter is doing a good job.

First Annual Service

Old Ideal Classic FF250

Cleaning the Worcester Greenstar magnetic filter.

Annual service on this Worcester Bosch 28Cdi compact.

Gareth Williams Heating - Various Pics

Atag iC 24

Atag Lifetime Guarantee on the Heat Exchanger

Atag iC 28

Atag Cross section

Atag Cross section of the Heat Exchanger

Atag Heating Technology

Atag filter fun

Atag Quality Products

Atag iC Economiser 27 and One controller

The Atag One controller

Atag Boiler Installations.

Boiler, Radiators and external flue & condensate

Worcester Bosch CDi Classic

Worcester Bosch 29Cdi Classic Erp - Worcester Greenstar filter and Comfort 1Rf thermostat, 10 year guarantee

Boiler Installations 2015

Worcester Bosch 28 Cdi Compact with a vertical flue and condensate pump. Also a 10 year guarantee.

Worcester Bosch 28 Cdi compact

Excellent boiler with a great hot water flow rate of 20 litres per minute. Also a 10 year guarantee as standard.

Worcester Bosch Highflow 440 Cdi

Worcester Bosch 42 Cdi Classic

Worcester 32 Cdi Compact

Worcester Bosch 32 Cdi Compact

Worcester 38 Cdi Classic - Worcester Combi Installation in an airing cupboard with a vertical flue and 10 year guarantee.

Worcester 38 Cdi Classic - Condensate Pump and Greenstar Filter. All with a 10 year guarantee.

Worcester Combi Installation - Worcester Greenstar 30i Installation with mechanical clock.

Worcester boiler and Nest Learning Thermostat - Here we Installed a Worcester 34 Cdi Classic with a Nest Learning Thermostat. We replaced a very old ferolli boiler and re-located its position.

Worcester Combi boiler - Here was just before the electricians finished off. We fitted a Worcester combi boiler with a Greenstar Filter and a Condensure Siphon.

Thermal Images. A very dirty system that needed flushing out. We used Fernox chemicals and a Magnacleanse machine.

Powermax boiler out new Worcester In - Customer wanted to replace an old Powermax and maximise space in the airing cupboard. 10 Year Guarantee.

Worcester Smartphone Thermostat. - We are Installing a lot of these Worcester Waves recently. Installed with a Worcester boiler the system can be 98 efficient.

IMG_8336

IMG_8312

Boiler Installations 2016

Atag iC Economiser 35 and One controller.

Atag iC Economiser 27 and One controller.

Atag iC Economiser 35 combi boiler.

Dan's lovely pipework and Installation.

Being added to the system through the magnetic filter.

Corrosion Inhibitor Sentinel x 100

Incoming temperature 11 degrees. Heated to 45 degrees with a flow rate of 16 litres a minute.

Superb Hot water delivery

Atag iGuard Magnetic Filter.

So here we have an incoming water temperature of 12 degrees. Its been raised by 35 to 47 degrees and is flowing at 15.5 litres per minute which is very impressive.

iC 35 hot water flow rates

One reason we love to Install Atag's is the solid wall jig. We hang the jig onto the wall then pipe up the system. When its all piped up we simply place the boiler onto the jog to commission. 

Atag iC Economiser 35 and Jig 

Atag iC Economiser 27 combi boiler with an iGuard magnetic filter and a vertical flue.

Atag iC Economiser 27 

We gave the old system and radiators a good flush with our Magnacleanse machine. We removed this slu

System flush.

Vertical flue installation.

We tried our best to keep this back boiler alive but the heat exchanger had failed. Only one thing to do, replace it with a more energy efficient boiler.

Baxi Bermuda fire and back boiler

We re routed the gas supply to the boiler externally so the customer can have a new Porch built.

New Gas Supply.

We replaced an old Ariston boiler with this super efficient Atag combi boiler.

Atag iC Economiser 27 and iGuard magnetic filter.

Atag iR 18

We replaced with a Glowworm Betacom 3 30c and a new filter and controls.

Replaced another leaking boiler.

Atag iC Economiser 27 and Nest Learning Thermostat 

Atag iC Economiser 35

We always respect our customers properties

The Atag One internet control.

Atag iC Economiser 35 with a Vertical Flue

The existing flue was Installed incorrectly so we re positioned it as per Manufacturers Instructions.

Flue Installation and making good.

Atag iR 15 Regular gas boiler

Getting the het back on for our customer in Bassaleg, Newport.

Atag iC Economiser 27 Boiler Installation

Mini Expansion Vessel, Greenstar Filter and Wireless Comfort Controls

Mini Expansion Vessel, Greenstar Filter and Comfort Controls

Using our Adey Magnacleanse to flush the system water.

Magnacleanse 

Vibrating the radiators to remove sludge and help with efficiency.

Josh Tyrrell 'Apprentice'

Before and after, cold spots on the radiators all removed.

Dan removing an old flue ready for a new boiler

Worcester Bosch 34 Cdi Classic installation.

New Boiler installed in the Attic

Dual Fuel Towel Radiator

Designer radiator

Stelrad Softline radiator and Danfoss Thermostatic radiator valve.

The plasterers will be making good the wall in this picture.

3rd Generation Nest learning thermostat.

Worcester Bosch 34 Cdi Classic, Nest and Greenstar Filter

The Atag iCon 2 Heat Exchanger. This has a lifetime warranty from Atag, also see all the major components are made from Brass.

This is sludge that we removed from a customers radiators with our Magnacleanse machine. All the cold spots from the radiators are now gone.

Sludge

More Sludge

Dan Meglio with the Magnacleanse results.

Installed in a customers attic to make space for a bathroom conversion.

We lagged all the pipes that supply the boiler to increase efficiency and protect from freezing.

Copper pipes all lagged.

The Cylinder was removed so the customer can extend the existing bathroom.

Old airing cupboard

Copper pipes supplying the boiler in the attic.

Pipes all lagged

From an old Open Vented system to a new sealed combi system.

Boiler Changeover.

All the pipes neatly clipped in the attic.

Heating Flow and return pipes. Hot and cold water pipes and Gas supplying the Atag iC Economiser 35.

Copper pipework

The Atag iC Economiser 35 Combi boiler with the Internet based One controller. All with a 10 year Warranty.

Atag iC Economiser 35 and One Controller.

Worcester Bosch 32Cdi compact

During the job carrying out a Magnacleanse

Sludge we took out of the radiators

Thermal image of Dan carrying out a Magnacleanse.

The customer wanted a simple room thermostat, we like this one because of the big dial.

Esi Room Thermostat

Some more sludge removed from the radiators 

Atag One controller

We got some great results with our Kamko Powerflush machine (including dual magnets) A huge amount of sludge removed from the existing system.

Kamko Powerflush Machine

This figure of 16.1 is the amount of hot water flowing through the boiler. An impressive 16.1 litres a minute.

We replaced an old Ideal Mexico free standing boiler with an Atag ic Economiser 35 and One controller. we also gave the system a Powerflush.

System Changeover in Blaenavon

This is our favourite boiler to Install. 10 year Warranty and 16.1 litres of hot water a minute.

We had quite a bit of work removing all this.

Our Kamko Quantum CF90 Powerflush machine.

Thermal image of the most efficient boiler in Europe.

The Hot water flow rate of 15.5 litres per minute. Incoming cold water temperature is 22 degrees and outgoing is 63 degrees, with a rise of 41 degrees. Impressive.

New Atag boiler and a One Controller (smart internet thermostat) with a super hot water flow rate of 15.5 litres a minute.

Some more sludge removed from the radiators.

Powerflush

This is the water in the existing system before cleaning.

Combi Powerflushing Magnets

This system took us all day to flush. We had excellent results.

Kamko Powerflush Machine CF90

Another super Atag boiler. This one gave us 16.5 litres a minute of hot water. 

We got the bricks from The Matching Brick Company.

Making good the flue hole.

Some more sludge removed from the radiators. I asked him to "look as shocked as you can"

This is the water in the new system after cleaning. This will prolong the life of the boiler and improve the efficiency of the system dramatically.

Old Baxi replaced with a Vaillant Ecotec Plus 825

Boiler Installations 2017

Baxi EcoBlue Advance heat only boiler.

Atag iC Economiser Plus 27 Combi Boiler Installation.

Potterton Suprima - Baxi Ecoblue Advance boiler swap.

Magnacleanse flush and sludge removal. 

We replaced the Powermax with an Atag iC Economiser plus 35.

Powermax replaced.

Powermax replacement.

Powermax replacement

Baxi 624 - Commissioning this compact combi boiler.

Baxi ecoBlue Advance Heat 19kW

Atag iC Economiser plus 27

Boiler Installations 2018

Gareth Williams Heating Ltd

Gareth Williams Heating has a strong customer base throughout Newport and South Wales offering a professional and friendly service. We specialise in Boiler Installations. Contact us today.

You are reviewing

Gareth Williams Heating Ltd

In your words, share your experience

Give your review a title