Watford's Most Trusted Heating & Plumbing Experts for Over 20 Years
From emergency boiler repairs to luxury bathroom renovations, J&L Gas & Renewables provides Gas Safe registered excellence across Hertfordshire and North London. Professional, friendly, and always reliable.
20+ Years
Experience
Gas Safe
Registered
Local
& Reliable
Welcome to J&L Gas & Renewables
For over two decades, J&L Gas & Renewables has been the trusted choice for homeowners across Watford and Hertfordshire seeking reliable, professional heating and plumbing services. Founded by Lawrence Giandri, our company combines old-fashioned values—honesty, punctuality, and respect for your home—with the latest in heating technology and industry best practices.
We understand that inviting a tradesperson into your home requires trust. That is why we have worked hard to build a reputation based on quality workmanship, transparent pricing, and genuine customer care. Our 4.93-star rating on TrustATrader, earned from dozens of verified reviews, reflects our commitment to exceeding expectations on every job we undertake.
Whether you need an emergency boiler repair, a new central heating system, or someone to fix that annoying dripping tap, J&L Gas & Renewables delivers the same high standard of professional service. We are Gas Safe registered, fully insured, and dedicated to keeping your home warm, safe, and comfortable.
Our Featured Services
From boiler installations to emergency repairs and general plumbing, we offer a comprehensive range of heating and plumbing services tailored to meet the needs of homeowners across Watford and Hertfordshire. Every service is delivered with the same commitment to quality, safety, and customer satisfaction.
Boiler Installations
Expert new boiler installations and replacements with up to 10 years warranty.
- Free site survey
- All major brands
- Finance available
Emergency Repairs
Fast response for boiler breakdowns and heating emergencies when you need us most.
- Quick response
- Expert diagnosis
- Quality parts
General Plumbing
Complete plumbing services from leak repairs to full bathroom installations.
- Leak detection
- Pipe repairs
- Installations
Complete Heating & Plumbing Solutions
At J&L Gas & Renewables, we pride ourselves on being a one-stop solution for all your home heating and plumbing needs. Our team has the expertise and experience to handle projects of any size, from routine maintenance to complex installations.
Boiler Services
Expert boiler installations, repairs, servicing, and replacements. We work with all major brands and offer warranties of up to 10 years on new installations.
Central Heating
Full central heating system design, installation, and maintenance including radiators, thermostats, zone controls, and system upgrades.
Plumbing Repairs
Comprehensive plumbing services including leak repairs, pipe installations, tap replacements, toilet repairs, and water pressure issues.
Bathroom Fitting
Professional bathroom renovations and installations from plumbing and drainage to complete fitouts with luxury finishes.
What Our Customers Say
“Lawrence was knowledgeable, polite, reliable, honest and professional throughout. Highly recommend J&L Gas & Renewables for any heating work.”
Dom and Keiysha
Boiler Installation
Why Choose J&L Gas & Renewables?
With over two decades of experience serving Watford and the surrounding areas, we've built our reputation on quality workmanship, honest pricing, and reliable service you can trust.
- Gas Safe Registered & fully insured
- 20+ years of industry experience
- No job too big or small
- Clean, tidy, and professional work
Request a Free Quote
Proudly Serving Watford & Surrounding Areas
Based in Watford (WD19 5AY), we provide heating and plumbing services across a 20-mile radius covering Hertfordshire and North London. Our local knowledge means we understand the specific needs of homes in this area, from Victorian properties with traditional heating systems to modern new builds.
Frequently Asked Questions
Got questions about our heating and plumbing services? Here are answers to the most common questions we receive from homeowners in Watford and Hertfordshire. If you cannot find what you are looking for, give us a call and we will be happy to help.
Need a Heating or Plumbing Expert?
Get in touch today for a free, no-obligation quote. Whether you have a plumbing emergency, need a new boiler installed, or want to discuss a bathroom renovation, we are here to help with all your heating and plumbing needs across Watford and Hertfordshire.