Heating and Air Conditioning Specialists in Westbury-on-Trym

At AGW Gas Ltd, we’re your trusted local experts for heating and air conditioning in Westbury-on-Trym.

Heating Services in Westbury-on-Trym

We provide a full range of heating services to keep your home warm, efficient, and safe:

  • Boiler installations and upgrades – tailored solutions with extended guarantees available.
  • Boiler repairs and servicing – reliable diagnostics, expert repairs, and annual maintenance.
  • Central heating systems – design, installation, servicing, and maintenance.
  • Radiators – replacements, repairs, and MagnaCleanse® flushing.
  • Hot water cylinders and unvented systems – safe installation and servicing.
  • Gas fires – installation, checks, and routine maintenance.
  • Underfloor heating – discreet and efficient heating solutions.


We provide a responsive service across BS9 and the surrounding areas when problems arise.

Boiler Servicing

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 Westbury-on-Trym?

When you choose AGW Gas Ltd, you benefit from:

  • Gas Safe registered heating engineers for safe, compliant work.
  • REFCOM-certified air conditioning specialists.
  • Worcester Bosch Accredited Installers for the latest, energy-efficient technology.
  • Clear, upfront pricing with no hidden extras.
  • Fully insured work, backed by guarantees.
  • A proven reputation with excellent reviews on Which? Trusted Traders.

Air Conditioning Services in Westbury-on-Trym

Our air conditioning services ensure year-round comfort, keeping your home cool in summer and warm in winter.

  • Installation – quiet, energy-efficient systems tailored to your property.
  • Repairs and diagnostics – fast solutions for issues with all major brands.
  • Servicing and maintenance – including filter cleaning, refrigerant checks, electrical inspections, and thermostat testing.


Regular servicing reduces energy bills, improves air quality, and extends the life of your system.

Air Conditioning
Gas Engineer

Trusted Brands for Lasting Quality

We only work with leading manufacturers such as Worcester Bosch, known for efficiency, reliability, and long-lasting performance. By choosing trusted brands, you benefit from:

  • Lower running costs.
  • Proven reliability.
  • Extended warranties.
  • Modern, quiet technology.

Areas We Cover

As well as Westbury-on-Trym, we serve Clifton, Henleaze, Stoke Bishop, Redland, Portishead, Clevedon, Nailsea, and Long Ashton. If you’re unsure whether we cover your area, simply give us a call.

AGW Gas Ltd, Portishead

About AGW Gas Ltd

AGW Gas Ltd is a family-run business with strong local roots. Our engineers are fully qualified, insured, and chosen for their professionalism and reliability. We hold £2 million public liability insurance, comply with all regulations, and guarantee our work for complete peace of mind.

Frequently Asked Questions

Yes – we respond quickly to breakdowns in the BS9 area.

We provide free, no-obligation quotes tailored to your property.

Most installations are completed within one to two days.

Yes – we’ll dispose of it safely and leave your home tidy.

  • 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.

Typically 10–20 years with regular servicing.

Should I repair or replace my boiler?
If your boiler is unreliable or costly to repair, replacement may be best. We’ll give you honest advice.

  • Combi boilers: best for smaller homes.
  • System boilers: ideal for medium to large homes.
  • Regular boilers: suited to older properties with tanks and cylinders.

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

We recommend an annual service to keep systems safe, efficient, and reliable.

Yes – most modern systems provide both heating and cooling.

Always choose engineers who are Gas Safe registered for any boiler or gas work, and REFCOM-certified for air conditioning. At AGW Gas Ltd, all of our team hold these qualifications, so you can be confident that every job is completed safely and to the highest standards.

Yes – we provide free, no-obligation quotes for all heating and air conditioning services. Our team will assess your requirements, explain your options clearly, and provide a written estimate with no hidden extras.

We work with a range of trusted manufacturers, including Worcester Bosch, known for efficiency and reliability. Our engineers can install, service, and repair most leading boiler and air conditioning brands.

Yes. As Worcester Bosch Accredited Installers, we can offer extended guarantees on new boilers and systems. All of our installation and repair work is also backed by our own guarantee for added reassurance.

There are several types of air conditioning units to suit different needs, including wall-mounted split systems, multi-split systems for multiple rooms, and portable units. Each type offers unique benefits—such as quiet operation, energy efficiency, and the ability to cool or heat individual rooms—making it easy to find the right solution for your property.

All of our air conditioning installations feature modern, energy-efficient systems from trusted brands like Worcester Bosch. These units offer quiet operation, reliable performance, and advanced controls for year-round comfort. As accredited installers, we provide extended manufacturer warranties on new systems, along with our own guarantee on installation work—giving you complete peace of mind.

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