Same-Day & Next-Day Installations Available

Boiler Installation in Islington — new boilers fitted across N1, N5, N7 & EC1

Supply and fit from £1,800. Covering Angel, Highbury, Barnsbury, Canonbury, Holloway and Archway. Gas Safe certified, with warranties — so you never have to worry about breakdowns again.

Get Fixed Price Quote Speak to our experts

⭐⭐⭐⭐⭐ 160 Google Reviews • Gas Safe • Up to 10-Year Warranty

New Boiler Installation in Islington — N1, N5, N7 & EC1

Gas Safe registered — Angel, Highbury, Barnsbury, Canonbury & Holloway

Islington’s Georgian and Victorian housing is some of the most sought-after in North London, but it presents real challenges for boiler installations. Narrow flue routes through period walls, restricted boiler cupboard access in Barnsbury and Canonbury terraces, and ageing pipework that often needs attention alongside a new unit — these are the things we plan for on the survey, not discover on installation day. We work across the full borough: Angel N1, Highbury N5, Holloway N7, Archway N19, Tufnell Park N7, and Clerkenwell EC1. For a standard combi swap in a period Islington terrace, supply and fit from £1,800 all-in. For larger houses or more complex pipework, we quote after a free site survey — no surprises., it may be time to upgrade to a new system. For professional boiler installation in Islington, Koncore Plumbing & Heating provides expert installations carried out by Gas Safe registered engineers, ensuring your new boiler is fitted safely and performs properly from day one. Whether you’re replacing a failed boiler or upgrading to improve efficiency, we install modern systems designed to deliver reliable heating and hot water without ongoing issues.

We install leading boiler brands including Vaillant, Worcester Bosch, Ideal and Baxi across Islington, Angel, Highbury, Canonbury, Barnsbury, Holloway and nearby areas such as Finsbury Park and Archway, helping homeowners and landlords upgrade to energy-efficient systems with long warranties. With fixed pricing, clear advice and no hidden costs, you’ll know exactly what to expect from start to finish. Our focus is on installing the right system for your property, ensuring long-term performance, lower running costs and improved comfort.

If your boiler can still be repaired, we also provide boiler repair in Islington as a cost-effective option. To keep your new system running efficiently and maintain manufacturer warranties, we also offer boiler servicing in Islington.

Problem & Solution

PROBLEM → SOLUTION

If your boiler can be repaired instead. Islington’s hard London water also means heat exchangers scale up faster than in softer water areas, which is why we always include a full system flush and inhibitor dose with every installation — it protects the new boiler and keeps the warranty valid., see our boiler repair services. We install modern, energy-efficient boilers with long warranties.

Problem & Solution

FIXED PRICE PACKAGES

choose the package

Our fixed-price boiler installation packages in Islington include everything needed

Main Compact

5 Year Warranty

From

£2,180

Vaillant ecoTEC Pro

7 Year Warranty

Worcester Bosch 8000

10 Year Warranty

From

£3,390

WHAT’S INCLUDED

Regular maintenance helps prevent breakdowns — see our boiler servicing page

Trusted local experts

Why Islington homeowners choose Koncore for boiler installation

160 Verified Google Reviews

Rated 4.9 out of 5 by homeowners across Islington for reliable, high-quality service.

Gas Safe Registered Engineers

Fully qualified and certified engineers you can trust for safe, compliant work.

Fixed Transparent Pricing

Clear upfront quotes with no hidden costs or surprise charges.

Same-Day Installation Available

Fast response and flexible booking with same or next-day availability.

Up to 10-Year Warranty

Long-lasting boilers with manufacturer-backed warranties for peace of mind.

Local Islington Expert

Trusted boiler specialists covering Islington, Angel, Highbury, Canonbury, Barnsbury, Holloway and nearby areas such as Finsbury Park and Archwaye.

HOW IT WORKS

Clear. Simple. No guesswork.

Every boiler is different. We assess your system properly and provide clear, honest installation recommendations.

Get a Fixed Price Quote

Get a fast, fixed-price quote in minutes.

Book Your Installation

Choose a time that suits you best.

We Install Your Boiler

Installed safely by expert engineers.

Client Testimonials

Join the homeowners who trust us for reliable heating 

      EXCELLENT  
   Based on 160 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Kay Perera 
 
 
 
 Trustindex verifies that the original source of the review is Google. excellent service. great communication. highly recommend.
  
 
      Posted on Google  
   
   Uzuriuk 
 
 
 
 Trustindex verifies that the original source of the review is Google. Mohammed is excellent.  He is always on time, totally professional and helpful.  My tenant is very happy, and that is important to me.  I will be using Koncore Plumbing & Heating from now on.

New Review April 2026:  Mohammed and his team have replaced my old boiler, which had reached the end of its life and had caused a leak to the property below.  A thorough investigation to check all pipework in the affected room, and removal of sodden insulation material (itchy stuff).  Boiler fully commissioned, and Hive working too.  Once again tenants are happy.  Thank you so much once again Mohammed - you are amazing and helped me out so much.
  
 
      Posted on Google  
   
   tez tes 
 
 
 
 Trustindex verifies that the original source of the review is Google. Koncore Plumbing took on the problems i had and resolved them with ease at a very reasonable price. I do recommend them.
  
 
      Posted on Google  
   
   Jerisfou 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent job done by Koncore. We recommend them strongly
  
 
      Posted on Google  
   
   Aidid Laari 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great service
  
 
      Posted on Google  
   
   Maria Huseyin 
 
 
 
 Trustindex verifies that the original source of the review is Google. Mohammed is very reliable and always trys to fit jobs in as soon as possible.
  
 
      Posted on Google  
   
   Hong 
 
 
 
 Trustindex verifies that the original source of the review is Google. Had Koncore team did a smart thermostat installation, powerflush and radiators installation. They are a group of professionals that take pride in their work and they charge a reasonable price. Would surely recommend them.
  
 
      Posted on Google  
   
   ugonna edomobi 
 
 
 
 Trustindex verifies that the original source of the review is Google. Really helpful and quick assistance with my boiler issues.
  
 
      Posted on Google  
   
   Tony Engle 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent - prompt, efficient, friendly - did a great job
  
 
      Posted on Google  
   
   Richard murphy 
 
 
 
 Trustindex verifies that the original source of the review is Google. Mo & the team did a very quick and brilliant job replacing our boiler.

We have had trouble with the previous boiler for the last year and unfortunately it finally died on us.

Mo had come out previously to fix the boiler and when it eventually died we came back to him and his team.

Would highly recommend!

Services area

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FAQ

Common Questions, Answered Clearly

Simple answers to help you make the right call.

Do you offer same-day or next-day boiler installation in Islington?

Yes. Subject to availability we can often survey your Islington home and fit the new boiler the next day, sometimes the same day. Call 020 7108 6322 to check the soonest slot.

Which boiler brands do you install in Islington?

We install Worcester Bosch, Vaillant, Ideal, Baxi and other leading brands. We recommend the right model and output for your Islington property rather than the one with the biggest margin.

What warranty comes with a new boiler?

Depending on the brand and model, warranties run up to 10 years. Because we are Gas Safe registered (918817) and register every Islington installation, your warranty stays fully valid.

Should I choose a combi, system or regular boiler?

It depends on your home's size and hot-water demand. Many Islington flats and conversions suit a combi, while larger townhouses with two or more bathrooms often work better on a system boiler. We advise at your survey.

Do you remove and dispose of my old boiler?

Yes. Every fixed-price Islington installation includes removing and safely disposing of your old boiler and any redundant parts, with a full tidy-up before we leave.

Are your engineers Gas Safe registered?

Yes. Koncore is Gas Safe registered (918817) and fully insured. Every Islington installation is carried out by a qualified engineer and notified to Building Control on your behalf.