Gas Boiler & Cylinder installation
Looking to replace your old gas boiler or hot water cylinder?
Looking to replace your old gas boiler or hot water cylinder?
Looking to replace your old gas boiler or hot water cylinder?
At Gas Safe Plumbing, we specialise in the expert installation of gas boilers and unvented hot water cylinders, with over 15 years of experience serving homes across London and Hertfordshire.
We’re fully qualified and Gas Safe registered, certified to install both gas appliances and G3 unvented systems — delivering work that’s safe, profes
At Gas Safe Plumbing, we specialise in the expert installation of gas boilers and unvented hot water cylinders, with over 15 years of experience serving homes across London and Hertfordshire.
We’re fully qualified and Gas Safe registered, certified to install both gas appliances and G3 unvented systems — delivering work that’s safe, professional, and fully compliant with current building regulations.
✅ Replacing an old boiler? Older systems can burn up to 30% more gas as they lose efficiency over time. A modern condensing boiler could significantly cut your energy bills and carbon footprint.
✅ We proudly install Vaillant boilers, known for their reliability and efficiency — and their latest range is even hydrogen-ready, helping future-proof your home for greener energy.
🔧 We install all major brands, including:
Looking to replace your old gas boiler or hot water cylinder?
Looking to replace your old gas boiler or hot water cylinder?
- Vaillant – our top choice: hydrogen-ready, highly efficient, and covered by 7–10 year warranties
- Baxi – budget-friendly and reliable
- Worcester Bosch, Ideal, Glow-worm, and more – all brands fitted to suit your needs
📋 What’s Included
Looking to replace your old gas boiler or hot water cylinder?
📋 What’s Included
- ✅ Removal of your old boiler
- ✅ Full installation of a new energy-efficient boiler
- ✅ Magnetic system filter and system flush (if needed)
- ✅ Smart thermostat installation (on request – Hive, Nest, etc.)
- ✅ Benchmark certificate and building control notification
Hot Water Cylinder Installation – What We Offer:
- ✅ Unvented (pressurised) and vented cy
- ✅ Removal of your old boiler
- ✅ Full installation of a new energy-efficient boiler
- ✅ Magnetic system filter and system flush (if needed)
- ✅ Smart thermostat installation (on request – Hive, Nest, etc.)
- ✅ Benchmark certificate and building control notification
Hot Water Cylinder Installation – What We Offer:
- ✅ Unvented (pressurised) and vented cylinder installation
- ✅ Replacement of old copper or indirect hot water cylinders
- ✅ G3-certified engineers for unvented systems
- ✅ Ideal for homes with multiple bathrooms or poor water pressure
- ✅ Full pipework and insulation upgrades where needed
💡 Why Choose Us?
Looking to replace your old gas boiler or hot water cylinder?
📋 What’s Included
- ✅ Gas Safe Registered engineers
- ✅ Vaillant and Baxi specialists (we install all makes/models)
- ✅ Competitive fixed pricing – no hidden costs
- ✅ Clean and tidy work, guaranteed
- ✅ 10-year warranties available on selected boilers
- ✅ Unvented cylinder qualified engineers (G3 certified)
- ✅ £5 million public liability insurance for your peace of mind
- ✅ Re
- ✅ Gas Safe Registered engineers
- ✅ Vaillant and Baxi specialists (we install all makes/models)
- ✅ Competitive fixed pricing – no hidden costs
- ✅ Clean and tidy work, guaranteed
- ✅ 10-year warranties available on selected boilers
- ✅ Unvented cylinder qualified engineers (G3 certified)
- ✅ £5 million public liability insurance for your peace of mind
- ✅ Real reviews from real local customers in the local area
📞 Get in touch today for a free site visit and no-obligation quote.