Gas boilers and central heating installed, serviced and repaired across Flintshire, Chester and North Wales.

J.A Gas Services is James Antrobus's heating business in Northop Hall, near Mold. James fits new boilers, looks after the ones you already have and puts faults right, with a Gas Safe registration and a Worcester Bosch accreditation behind every visit.

4.9 from 16 Google reviewsGas Safe 595318Northop Hall, Mold

A new Baxi boiler fitted on a brick wall with fresh copper pipework

A new Baxi boiler with fresh copper pipework.

Install
Service
Repair

Install, service, repair

Plumbing and heating for homes across Chester and North Wales. Gas, LPG and heat pumps, from a first fit to the yearly service and the call when the heating stops.

Tall white vertical radiator fitted in a room mid-renovation
Tall white vertical radiator on a grey tiled wall

Install

  • Gas Boiler Installation
  • Gas Central Heating Installation
  • LPG Boiler Installation
  • LPG Central Heating Installation
  • Air Source Heat Pump Installation - ASHP
  • Ground Source Heat Pump Installation - GSHP
  • Gas Cooker Installation
  • Smart Thermostats

Service

  • Gas Boiler Servicing / Repair
  • Gas Central Heating Servicing / Repair
  • LPG Central Heating Servicing / Repair
  • Air Source Heat Pump Servicing / Repair - ASHP
  • Ground Source Heat Pump Servicing / Repair - GSHP
  • Gas Safety Checks - CP12

Repair

  • Emergency Central Heating Repair

Recent jobs

  • Annual gas boiler service and fitting of a new radiator TRV
  • Hive Hub installation
  • Boiler fault find and service
  • Provision and installation of a heating control panel
  • Zone valve motor diagnosed and replaced

Boilers on the wall

A handful of recent installs, from Worcester and Ideal boilers to the copper pipework behind them. James is a Worcester Bosch Accredited Installer.

  • Ideal boiler fitted in a kitchen cupboard

    Ideal, kitchen cupboard

  • Worcester boiler fitted in an alcove

    Worcester, alcove

  • Worcester boiler with installer label

    Worcester

  • Worcester boiler with copper pipework on a wall mid-refurb

    Worcester, new pipework

  • Worcester boiler fitted in a kitchen

    Worcester, kitchen

  • Worcester boiler beside a window on a tiled wall

    Worcester, tiled wall

  • Worcester boiler on a brick wall with copper pipework

    Worcester, brick wall

  • Ideal boiler on a tiled wall

    Ideal, tiled wall

Reading the gauges

The scores our customers have left on Google and Checkatrade.

Google rating, from 16 reviews
Checkatrade score, from 34 reviews
Reliability on Checkatrade, past 12 months

Gas Safe Register

J.A Gas Services Ltd

Registration number
595318
Address
Northop Hall, Mold, Flintshire
Check any engineer on the Gas Safe Register

Worcester Bosch Accredited Installer

Checkatrade member since October 2024

Vetted by Checkatrade. Free estimates, cards accepted, and insurance work undertaken.

See the Checkatrade profile
“Contacted Tuesday afternoon, booked in for Wednesday morning, James arrived early, diagnosed the problem quickly (Zone valve motor), replaced it efficiently and charged for the service and part fairly. No upselling and very pleasant.”
Luke Robert, Google review, Nov 2025
Glass walk-in shower with a rainfall head

What customers say

4.9 from 16 Google reviews

“Booked 8am, James arrived and all repairs completed within 4 hours. No upselling, no uneccessary repairs/parts, and very reasonably priced. Cannot fault. Will 100% use services again.”
David Kenyon, Google, Dec 2024
“Very pleased with the work carried out and my new boiler. James did a very tidy job, very prompt, respectful and competitive price. Would definitely recommend thank you.”
Jennifer Bowden, Google, Feb 2021
“Recently had a combi boiler installed by James. the work was done with minimal disruption to the rest of the house and was very well done. great work, great person and also great price and i would highly recommend”
Adrian Duncan, Google, Feb 2020
“Emailed Saturday evening with a heating problem. Received a response within two hours and appointment made for Monday afternoon. James arrived on time, the heating problem was sorted, along with a boiler service which was an additional request. All this done within the hour, quietly and efficiently. Very impressed and would certainly use this Company again!”
Jeanette Hamilton, Google, Sep 2025

On Checkatrade

9.61 out of 10 from 34 reviews

10 / 10Provision and installation of heating control panel.
“great communication, good problem solving, got the job done quickly and efficiently.”
Joanne D, Checkatrade
9.67 / 10Hive Hub Installation
“Was great communication and arrived on time. Really nice guy and did a great job, would 100% recommend”
Owen V, Checkatrade
9.33 / 10annual gas boiler service and fitting of new radiator TRV
“James arrived on time when he said he would and was very tidy and completed the job quite quickly”
David N, Checkatrade
9.33 / 10Boiler fault find and service
“Very efficient. Quickly identified and repaired the problem”
Michael B, Checkatrade
9.33 / 10Boiler Repair
“Came to look at a fault on the boiler. Turned out it just needed a service. Work completed quickly and efficiently at a reasonable cost.”
Richard B, Checkatrade

More recent work

A few more of our plumbing and heating jobs.

  • Walk-in shower with white marble-effect tiles and brushed brass fittings
  • Bathroom with freestanding bath, brass towel rail and fittings
  • Bathroom with patterned tiles, chrome towel radiator and vanity unit
  • Stainless shower tower panel on slate-effect tiles
  • Floor-standing brushed nickel bath tap on black marble tiles
  • Shower enclosure with grey stone-effect tiles

Where we work

Based in Northop Hall, near Mold. We cover:

  • Flintshire
  • Chester
  • Wrexham
  • Denbighshire

Opening hours

Mon-Fri
8am-5pm
Sat-Sun
Closed

Northop Hall, Mold, Flintshire CH7

Book a visit or ask for a quote

Tell James what's going on with your boiler or heating and where you are. Estimates are free.

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