Boiler Installation

Installing a new boiler is an important investment in your home’s comfort and energy efficiency. At JTS Plumbing & Heating, we provide expert boiler installation services throughout London, ensuring your property remains warm and your system operates reliably for years to come.

Whether you’re replacing an old, inefficient boiler or fitting one in a new property, our Gas Safe registered engineers will guide you through the process—from selecting the right model to professional, compliant installation. We provide honest advice, fixed transparent pricing, and top-quality workmanship to deliver peace of mind and long-term value.

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Why Choose Us for Boiler Installation Services?

1. Skilled & Certified Technicians

Our engineers are Gas Safe registered and trained in the latest boiler technologies. We install top boiler brands with precision and care to ensure optimal performance and safety.

2. Commercial & Residential Expertise

Whether it's a single-family home, rental property, or commercial building, we tailor each installation to your needs—ensuring energy efficiency, proper sizing, and seamless operation.

3. Fast & Hassle-Free Boiler Installation

Enjoy quick, professional boiler installation with minimal disruption. We help you choose the right energy-efficient system and install it safely—so your home stays warm, sooner.

When to Call for Boiler Installation Service

  • Frequent Breakdowns and Costly Repairs
    If you’re constantly calling out engineers for repairs, it may be more cost-effective to invest in a new boiler. Repeated faults are often a sign your current system is beyond its prime.
  • Boiler Over 10–15 Years Old
    Older boilers lose efficiency over time and may no longer meet modern energy standards. Installing a new, energy-efficient model can reduce bills and ensure consistent heating.

     

  • Inconsistent Heating or Hot Water
    Struggling with cold radiators or unreliable hot water? This could indicate your boiler can no longer meet your home’s needs—making an upgrade the smarter choice.

Residential & Commercial Services

Explore our trusted plumbing and heating solutions across Hertfordshire—delivered by certified experts with no hidden fees and no hassle.

Boiler Servicing

Trusted boiler experts for servicing, repairs, and efficiency in every home and business.

Emergency Plumbing

Expert plumbing from small leaks to full bathrooms — your trusted, local plumber.

Boiler Repair

Fast, reliable boiler repair by trusted engineers — available seven days a week.

General Plumbing

Expert plumbing services for reliable repairs, installations, and maintenance solutions.

Service You Can Trust!

We are available 24/7 for heating and plumbing repairs

Testimonial

What They Say About Our Service

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Christopher Phelps profile picture
Christopher Phelps
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Jordan and his team were incredibly polite, punctual and respectful. Excellent job with doing a whole new boiler change. Highly recommend JTS Plumbing. Thank you.
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Charlotte Bower profile picture
Charlotte Bower
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I needed advice about upgrading and moving the boiler from the kitchen to the airing cupboard. Jordan spent time taking through the options, answering my questions and gave me the reassurance that the job could be done without the pipe work showing. The outcome was excellent, really happy with the decision and quality of work and worth every penny! Would highly recommend Jordan and his team if you need any advice or work done
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CK Cheung profile picture
CK Cheung
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👍👍
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Stewart Dymock profile picture
Stewart Dymock
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Really good guys. Turned up on time and explained clearly what they were doing.
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Eddy profile picture
Eddy
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Fully recommend JTS. We just had our bathroom fully renovated and couldn’t be happier. Jordan and the team were great to work with from the start. Professional, efficient and tidy - couldn’t ask for more.
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Andrew A profile picture
Andrew A
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Thanks you Jordan for popping over at short notice when you had other things to do to fix a blocked toilet. Will be my first choice plumber from now on !
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Phil profile picture
Phil
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Brilliant service from start to finish. Work completed quickly and efficiently. Ibz was our engineer and he was brilliant. Couldn't recommend enough
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ashmi badiyani profile picture
ashmi badiyani
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Taylor and Owen were very good and arrived 30mins before agreed time. Got the job done in time are coming back for more work as we liked their professionalism and their work skill
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M S profile picture
M S
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Excellent service

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FAQ

Frequently Asked Question

How much does a gas boiler cost to install?

Gas boiler installation in the UK typically costs between £1,800 and £3,500 for a straightforward combi replacement. More complex installations, system conversions, or larger boilers can range from £3,500 to £5,500. The final cost depends on boiler type, output, and installation complexity.

No. UK law requires all gas boiler installations to be carried out by a Gas Safe registered engineer. DIY gas work is illegal and dangerous, and can lead to gas leaks, carbon monoxide risks, invalid warranties, and insurance issues.

The correct boiler size depends on your property size, number of bathrooms, radiators, and hot water demand. Small flats typically need 24–27kW combi boilers, while larger homes may require 30–40kW or system boilers. A heating engineer will perform a heat-loss calculation to recommend the correct output.

The most common causes of boiler failure are worn internal components, low system pressure, pump or valve faults, and lack of annual servicing. Sludge or debris in the heating system can also damage parts over time.

Signs a boiler may need replacing include frequent breakdowns, expensive repairs, poor efficiency, inconsistent heating, unusual noises, and age over 12–15 years. If repair costs approach replacement cost, installing a new boiler is usually the better option.

Yes, we can. We offer boiler replacement services with modern, energy-efficient models that help lower your heating bills and carbon footprint.
The best way is to schedule a boiler service before cold weather sets in. We check for pressure issues, faulty parts, and other common winter problems and solve it efficiently that will gives you peace of mind.

Need More Help?

At JTS Plumbing and Heating, our expert team is here to assist you with any heating or boiler concerns—reach out today for reliable support.