Heating and Air Conditioning Specialists in Chepstow

At AGW Gas Ltd, we’re your trusted local choice for heating and air conditioning services in Chepstow and across Monmouthshire.

Heating Services in Chepstow

Our heating services cover everything you need to keep your home or business comfortable and efficient:

  • Boiler installations and upgrades – including extended warranties on new Worcester Bosch systems.
  • Boiler servicing and repairs – from annual checks to emergency breakdowns.
  • Central heating systems – design, installation, and full maintenance.
  • Radiators – replacements, repairs, and MagnaCleanse® system flushing.
  • Hot water cylinders and unvented systems – safe, professional installations.
  • Gas fires – installation, checks, and servicing.
  • Underfloor heating – discreet, energy-efficient comfort.

We’re also on hand for fast-response repairs across Chepstow, Tutshill, Sedbury, and surrounding areas.

Thinking about a new boiler in Chepstow?

Get a free, no-obligation quote today from our Gas Safe registered engineers. We’ll assess your home, explain your options clearly, and provide a written estimate with no hidden extras.

Boiler Servicing Westbury on Trim

We will only use the details you provide to us about you or your company directly in connection with the services we provide to you.

Why Choose AGW Gas in Chepstow?

When you work with AGW Gas Ltd, you benefit from:

  • Gas Safe registered engineers for all heating and gas work.
  • REFCOM-certified specialists in air conditioning.
  • Worcester Bosch Accredited Installers for the latest energy-efficient systems.
  • Clear, honest pricing with no hidden extras.
  • Fully insured work, backed by our guarantees.
  • Excellent reviews and reputation on Which? Trusted Traders.

Air Conditioning Services in Chepstow

Our air conditioning services help you stay cool in summer and warm in winter – ideal for homes and offices in Chepstow:

  • Installation – energy-efficient, quiet systems tailored to your property.
  • Repairs and diagnostics – covering all leading brands.
  • Servicing and maintenance – from filter cleans to refrigerant checks.


With regular servicing, your system will run more efficiently, last longer, and improve air quality indoors.

 

Get An Air Conditioning Quote

Stay cool in summer & cosy in winter with air conditioning in Chepstow.
Our REFCOM-certified team installs energy-efficient systems from trusted brands, with extended warranties available.

Air Conditioning Long Ashton
Gas Engineer North Somerset

Working With Trusted Brands

We only install and maintain systems from leading manufacturers such as Worcester Bosch. That means:

  • Modern, quiet, energy-saving technology.
  • Lower running costs.
  • Proven reliability.
  • Extended manufacturer warranties.

Areas We Cover

We’re based in Portishead – just down the M48 and around 25 minutes from Chepstow – so we’re ideally placed to serve homes and businesses across South Wales and North Somerset. Alongside Chepstow, we also work in Tutshill, Sedbury, Caldicot, Portskewett, Magor, Clevedon, Nailsea, and the surrounding areas. If you’re unsure whether we cover your location, please don’t hesitate to contact our friendly team.

AGW Gas Ltd Chewmagna

AGW Gas Ltd is a family-run business with strong local roots. All our engineers are fully qualified, insured, and known for their professional, reliable service. With £2 million public liability insurance and a guarantee on every job, you’ll have complete peace of mind when choosing us.

Contact us today to arrange boiler, heating and air conditioning services in Chepstow.

Call us: 01275 846 437 or 07796 132 327

Email Us: enquiry@agwgas.co.uk

Frequently Asked Questions

Yes – we offer a quick-response breakdown service across NP16 and surrounding areas.

Most new boilers are fitted within one to two days.

Yes – we’ll safely dispose of your old system and leave your property tidy.

Yes – as accredited installers, we can also offer extended manufacturer guarantees.

  • An indoor unit (mounted high on a wall inside your home) removes warm air and replaces it with cooled or heated air.
  • An outdoor unit (fitted to a wall, roof, or balcony) releases warm air outside and brings in fresh air to be cooled or heated.

The system runs quietly and discreetly in the background, keeping your home comfortable.

We recommend booking an annual service for both your boiler and air conditioning system. Regular servicing is essential to:

  • Maintain efficiency – helping your systems run smoothly and keep energy bills down.
  • Ensure safety – especially for boilers, where Gas Safe checks can detect carbon monoxide risks or leaks.
  • Prevent breakdowns – early detection of minor issues reduces the risk of costly repairs.
  • Extend lifespan – well-maintained systems last longer and perform better.
  • Protect warranties – many manufacturers require annual servicing to keep guarantees valid.

In Chepstow’s varied climate, where heating is vital in winter and cooling is increasingly useful in summer, an annual service gives peace of mind that your home will stay comfortable all year round.

Yes – most modern systems provide both functions, making them a great year-round solution

Absolutely – all quotes are free, clear, and without obligation.

Wall-mounted split systems are ideal for bedrooms or conservatories, while multi-split units work well for larger homes and offices.

Yes – all our work is backed by our guarantee, along with extended warranties on new Worcester Bosch systems.

Yes – alongside our heating and air conditioning work, we carry out a wide range of general plumbing repairs and maintenance. Our qualified engineers can help with leaking or burst pipes, dripping taps, faulty toilets, blocked drains, and water pressure issues. We also install and maintain hot water cylinders, tanks, and other domestic plumbing systems. Whether it’s a small repair or a larger job, our team provides reliable, professional plumbing services to keep your home running smoothly.

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