
Hassle-free
Exceptional service
Lasting comfort
"If you replace an old G-rated boiler with a modern A-rated boiler that has a programmer, room thermostat and thermostatic radiator controls, you could save around £370 a year on your heating bill."

Is your current boiler struggling to keep your home warm?
Many households struggle with old household boilers that waste energy and push bills sky-high. If your boilers' on its last legs, now’s the time to get a trusted local team for a safe, hassle-free replacement.
We’ve helped homeowners and landlords across North West London & Hertfordshire with everything from a good combi boiler installation to full boiler replacement and fitting.
Our promise is simple
We know you want a clear idea of your combi boiler and installation cost before we visit. That’s why we provide an instant online guide showing typical new boiler prices and boiler replacement price ranges based on previous jobs. From a straightforward combi boiler installation cost to a full new boiler and fitting, we make it simple and affordable.
So, if you’re looking to get a new boiler installed in either North West London or Hertfordshire, click the link below and get your instant online guide price in seconds.
Choosing the right combi boiler or modern household boiler not only keeps your home comfortable but also helps cut energy costs. With our expert team, your new boiler installation will be carried out quickly, safely, and to the highest standard.
Our boilers are built to last. When you choose a new boiler installation, you can count on minimal maintenance, fewer breakdowns, and a reliable system that keeps your home warm. And if anything unexpected happens, our warranty covers both the boiler and installation, giving you complete peace of mind.
We believe trust starts with honesty and transparency. That’s why our boiler quotes are clear and straightforward—no hidden extras or inflated boiler installation costs. From the first conversation to the final fitting, you’ll always know exactly where you stand.
Stress-Free Experience
With our all-inclusive service, you won’t need to juggle multiple contractors. From helping you choose a good combi boiler to managing the boiler and fitting process, we take care of everything. Whether it’s a simple combi boiler installation or a full new boiler and installation, our expert team ensures a smooth, stress-free experience from start to finish.
Why Invest in Your Boiler?
Immediate Savings
Our offer is just the beginning. We guarantee your new boiler will start delivering energy savings right away.
Increased Home Value
A modern, efficient heating system is a valuable asset that can boost your home’s value—an excellent investment for the future.
Peace of Mind
Knowing that your boiler is reliable and energy-efficient means fewer worries about unexpected costs or uncomfortable cold spells.

North London & Hertfordshire
Read what our customers say about us...




Frequently Asked Questions
Do you offer finance options for new boilers?
Yes! We’ve partnered with Phoenix to offer flexible finance options, making it easier to spread the cost of your new boiler. Visit Phoenix or get in touch at [email protected] to explore the plans available.
A standard boiler replacement is usually completed in a day. More complex installations may take longer, but we’ll always keep you informed.
What warranties do you offer on new boilers?
Our boilers come with 8-12-year manufacturer warranties for parts and labour giving you peace of mind. In addition, if you have any problems we are here to help for the lifetime of your boiler.
Stay Warm, Save Money!

2025© Calidra Installations. All rights reserved.
Calidra Installations is a fully licensed and insured boiler company.