Thinking about a new boiler? We make it easy.
Our team specialises in fitting energy-efficient boilers from all major brands. We’ll help you choose the right model for your home or business, then install it safely, quickly, and with minimum fuss.
As certified Gas Safe engineers, we install to the highest standards — giving you peace of mind and full access to manufacturer warranties.
Not sure if you need a powerflush? Give us a call and we’ll assess your system honestly and professionally. If it’s not needed, we’ll tell you — no hard sell.
No heat? No hot water? No worries.
Boiler problems can strike anytime — that’s why we’re available 24/7. Our experienced engineers quickly diagnose and fix all types of boiler issues, so you’re not left in the cold.
We’ll arrive on time, fix the problem efficiently, and leave your space clean and tidy.
Regular servicing keeps your boiler safe, efficient, and running smoothly.
Our annual boiler check includes:
This small step can save you big on future repairs and energy costs — and help your boiler last longer.
If your boiler is over 10 years old or giving you constant headaches, it may be time to upgrade.
We’ll assess your current system and recommend modern, energy-saving options that fit your home and budget. Newer models use less energy and reduce your carbon footprint — all while keeping you warmer for less.
All our engineers are Gas Safe registered, meaning we meet the strictest safety standards on every job. Whether it’s an installation, repair, or service, your safety is our top priority.
At Castro’s, we’re more than just plumbers — we’re a family-run team that’s been proudly serving London for over 15 years.