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Trusted Plumbing & Heating Services in Trowbridge
G4 Gas is a dedicated team of plumbing and heating engineers based in Trowbridge, serving clients across the local area and beyond. With over 25 years of combined experience, we specialise in gas, oil, and LPG boiler services, emergency plumbing, and central heating installations. Our Gas Safe registered engineers ensure all work meets the highest safety and regulatory standards, providing peace of mind for every customer. We prioritise reliability, transparency, and efficiency, offering free site visits, no call-out fees, and competitive pricing. Our commitment to excellence has earned us an excellent local reputation, with a focus on long-term customer satisfaction. We cover a wide geographical area, including Westbury, Warminster, Frome, and Bath, ensuring accessible services for both residential and commercial clients.

Our team stays at the forefront of industry advancements, offering SMART thermostat installations and sustainable solutions like air source heat pumps and solar thermal power flushing. Customer testimonials highlight our prompt, professional service, particularly during emergencies, and our ability to deliver cost-effective, durable solutions. We are fully insured and committed to maintaining the highest standards of workmanship, ensuring every project aligns with legal requirements and manufacturer guidelines. Whether it's routine maintenance, urgent repairs, or system upgrades, G4 Gas combines technical expertise with a customer-centric approach to meet diverse heating and plumbing needs.
Services
Boiler Servicing Plumbing Repairs Central Heating Emergency Plumbing Gas Safe Certificates Water Softeners Heat Pump Installation Solar Thermal Flushing
Highlights and features
  • Gas Safe registered engineers ensure safe, compliant boiler services
  • Over 25 years of combined experience in plumbing and heating systems
  • SMART thermostat installations for energy-efficient home control
  • Excellent local reputation with 66+ 5-star reviews
  • Free site visits and no call-out fees for all services
Associations and certifications
  • Gas Safe Register
  • FSB (Federation of Small Businesses)
What people say
Prompt service Great price Professional engineers Excellent value Reliable repairs
Services
Boiler Servicing
Our Gas Safe engineers provide comprehensive boiler servicing for gas, oil, and LPG systems. Regular maintenance ensures safety, efficiency, and compliance with legal requirements. We identify potential issues before they become emergencies, extending boiler lifespan while maintaining warranty validity. Services include carbon monoxide checks, pressure adjustments, and component cleaning.
Emergency Plumbing
Available for urgent plumbing issues including leaks, burst pipes, and heating failures. Our rapid response team resolves critical problems within hours, minimising property damage. We handle both domestic and commercial emergencies with 24/7 availability, ensuring immediate restoration of essential services.
Central Heating
Complete central heating solutions from system design to installation and maintenance. We specialise in radiator upgrades, boiler replacements, and SMART thermostat integration. Our engineers optimise system efficiency, reduce energy bills, and ensure consistent warmth across residential and commercial properties.
Water Softeners
Installation of Harvey Water Softeners to combat limescale issues in hard water areas. Our systems remove calcium and magnesium minerals, protecting appliances and improving water quality. Benefits include reduced scaling, softer skin/hair, and extended lifespan of plumbing systems and household appliances.
Heat Pump Installation
MCS-certified installation of Viessmann air source heat pumps. These low-carbon systems extract ambient heat for efficient home heating. We provide full assessments, system sizing, and government grant assistance through the Boiler Upgrade Scheme, helping reduce long-term energy costs.
Questions
Do you offer emergency call-outs?
Yes, we provide emergency plumbing and heating services with rapid response times for urgent issues like leaks and boiler failures.
Are your engineers Gas Safe registered?
All our boiler engineers are Gas Safe registered, ensuring legal compliance and safety standards for gas appliance work.
Can you install SMART thermostats?
We install SMART thermostats compatible with gas, oil, and LPG systems, enabling remote temperature control and energy savings.
Do you service commercial properties?
Yes, we provide boiler servicing, plumbing maintenance, and heating solutions for both residential and commercial clients.
What areas do you cover?
We operate across Trowbridge, Westbury, Frome, Bath, Chippenham, and surrounding Wiltshire areas.
Do you offer boiler replacement finance?
While we don't provide direct financing, we offer competitive pricing and can advise on government grant eligibility for system upgrades.