Gas Boiler Installation Services in
Welwyn Garden City

New combi, system or regular boiler for your Welwyn Garden City home, fitted by Gas Safe registered engineers. We survey first, plan the flue, gas pipe and hard water protection properly, and give you a fixed written quote before any work starts.

07342 171269 Get a Free Quote

Boiler Installation Welwyn Garden City

New Boilers Planned Around Welwyn Garden City Homes

Most problems with new boilers come from what was not checked first: a gas pipe that is too small, a flue in the wrong place, a condensate pipe that freezes or a system that was never cleaned. We survey properly before we quote, and in Welwyn Garden City three things matter most.

Much of the original Garden City is covered by the Estate Management Scheme, so we plan the flue to the side or rear and tell you at the survey if a position may need checking with the council. The water is hard, so we fit scale protection where it is needed. And many older homes still have a 15mm gas supply, so we check the gas rate and include any upgrade in the quote.

We then size the boiler for your home and your hot water use. A combi suits most homes with one bathroom, and a system boiler with a cylinder usually suits homes with two. See our gas boiler installation page for more.

What Our Boiler Survey Covers

Every quote starts with a survey at your home. Where an old boiler vented into a chimney, a modern condensing boiler needs its own flue, and on a tank-fed system we check whether a combi or a system boiler will give you better hot water. These are the checks that decide what goes in your quote.

Flue Route and Position: Where the flue can terminate safely, the clearances needed from windows and boundaries, and whether the position is visible from the street under the Estate Management Scheme.
Hot Water Demand: How many bathrooms you have, how many people shower at once and how long the run is from the boiler to the furthest tap.
Gas Supply: A gas rate and pressure check, and whether the pipe from the meter needs upgrading for a modern boiler.
Existing System Condition: The state of the system water, radiators and pump, and whether a clean is needed before the new boiler goes on.
Condensate Route: Where the condensate pipe can drain, and how to keep any outside run from freezing.

Signs It Is Time for a New Boiler

If two or more of these sound familiar, replacing the boiler is often better value than another repair.

Repeat Breakdowns

The same faults coming back every winter, with parts getting harder and more expensive to find.

Hot Water Running Hot and Cold

Often scale in the heat exchanger of an older combi, which gets worse in hard water areas.

Rising Gas Bills

An older non-condensing boiler can use far more gas than a modern condensing model for the same heat.

Over 15 Years Old

Boilers of this age are usually less efficient and harder to repair economically.

Boiler Installation Services in Welwyn Garden City

We install new gas boilers across AL7 and AL8, from like for like swaps to full conversions. Every system is cleaned and protected with a magnetic filter and inhibitor, and every boiler is notified for Building Regulations and registered with the manufacturer.

Combi Boiler Installation

Heating and hot water on demand with no tank or cylinder, ideal for homes with one bathroom.

System Boiler Installation

A boiler with an unvented cylinder for homes with two bathrooms or high hot water demand.

Regular to Combi Conversions

Old tanks and cylinders removed, freeing up the loft and airing cupboard.

Like for Like Replacements

A new boiler in the same position, with the pipework and flue updated to current standards.

Flue and Gas Upgrades

New flue routes and gas pipe upgrades planned at survey and priced in the quote.

System Cleaning and Protection

The system cleaned, a magnetic filter fitted and inhibitor added to protect the new boiler.

07342 171269 Get a Free Quote

How We Work

How Your Boiler Installation Works

Survey and Advice

We visit, check the flue route, gas supply, system and hot water demand, and recommend the right boiler.

Fixed Written Quote

You get a clear quote listing the boiler, controls, flue, gas work and system cleaning, with no surprises.

Install and Commission

We fit the boiler, clean and protect the system, commission it, register the installation and show you how it works.

Why Welwyn Garden City Chooses APH

We plan the parts of a boiler installation that cause problems later, the flue, the gas pipe, the condensate and the system water, and put them all in a fixed written quote. Every boiler is fitted by a Gas Safe registered engineer, notified for Building Regulations and registered with the manufacturer.

Fast response times

Along the A414 from our St Albans base.

Qualified professionals

Gas Safe registered engineers on every job.

Transparent Pricing

A fixed written quote before we start.

5-Star Customer Reviews

Consistently rated 5 stars by local customers.

07342 171269 Get a Free Quote

What Our Customers Say

Customers often tell us our survey covered things that other quotes had missed, and that the installation day ran exactly as planned.

      EXCELLENT  
   Based on 326 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Penny Smith 
 
 
 
 Trustindex verifies that the original source of the review is Google. Really happy with the work carried out by Alban Plumbing and Heating. They fitted several new radiators in my home and the whole process was smooth from start to finish. They arrived on time, were friendly and professional, and took great care while working in the house.
The installation was completed to a high standard, everything was left clean and tidy, and the new radiators look fantastic and heat up perfectly. It's refreshing to find a company that is reliable, communicates well, and clearly takes pride in their work.
I wouldn't hesitate to use Alban Plumbing and Heating again and would happily recommend them to friends and family.
  
 
      Posted on Google  
   
   Inaam Mahmood 
 
 
 
 Trustindex verifies that the original source of the review is Google. Really professional dealings, knows what he talking about does it all, wont leave you hanging like others and gave me good advice that's froom for my house and my pocket. Very hard to find people like this nowadays.
  
 
      Posted on Google  
   
   Thor Conor 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent service from Alban Plumbing and Heating Ltd. I contacted them for a plumbing and heating issue at my property in St Albans, and the whole experience was excellent from start to finish.

The engineer arrived on time, quickly identified the problem, and explained everything clearly before carrying out the work. The job was completed to a high standard, and everything was left clean and tidy afterwards.

What stood out most was their professionalism, reliability, and honest approach. Communication was great throughout, and the pricing was fair with no unexpected surprises.

I would highly recommend Alban Plumbing and Heating Ltd to anyone in St Albans and the surrounding areas looking for a trustworthy plumbing and heating company. I will definitely use them again in the future.
  
 
      Posted on Google  
   
   Omar Mohammed 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent service from Alban Plumbing & Heating Ltd. Very professional, reliable, and efficient from start to finish. The work was completed to a high standard and everything was left clean and tidy afterwards. Communication was great throughout, and they arrived on time as promised. I would highly recommend them to anyone looking for trustworthy plumbing and heating
  
 
      Posted on Google  
   
   Alban City Dental 
 
 
 
 Trustindex verifies that the original source of the review is Google. Asif has done a great job looking after our plumbing and heating for several years now. He also recently attended in under an hour to fix an emergency leak that he and his son sorted with great efficiency allowing us to get back to work and continue operating with minimal disruption to our business and patients. He’s reasonably priced and friendly and I’m sure we will be using him for many years to come.  His 5 star status is well deserved.
  
 
      Posted on Google  
   
   Mr Afridi 
 
 
 
 Trustindex verifies that the original source of the review is Google. So helpful and has such a good heart. Fixed the stuff with no problem at all at of course the customer service is juts really good . Very friendly very kind I would definitely recommend
  
 
      Posted on Google  
   
   Xell 
 
 
 
 Trustindex verifies that the original source of the review is Google. amazing experience beautiful people
  
 
      Posted on Google  
   
   Parsa Yamin 
 
 
 
 Trustindex verifies that the original source of the review is Google. Fast, cheap and easy fix for my home, 100% recommend for all house problems

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Planning a New Boiler in Welwyn Garden City?

07342 171269

Boiler Installation Welwyn Garden City: Your Questions

Do I need permission for a new boiler flue in Welwyn Garden City?

A boiler replacement does not usually need planning permission, but much of the original Garden City is covered by the Estate Management Scheme, which controls visible changes to the outside of houses. We route the flue to the side or rear where possible, and if it would be visible from the street we tell you at the survey so you can check with Welwyn Hatfield Borough Council before going ahead.

How does hard water affect a new boiler?

Hard water leaves limescale in the parts that heat your hot water, especially the plate heat exchanger on a combi. Over time this causes hot water that runs hot and cold and reduces efficiency. We fit scale protection on the cold supply where it is needed, and a magnetic filter on the heating side to catch sludge.

Should I choose a combi or a system boiler?

A combi suits most homes with one bathroom, because it heats water on demand and needs no cylinder. If you have two bathrooms, or several people shower at the same time, a system boiler with an unvented cylinder usually gives better hot water. We recommend the type that suits how your household uses hot water.

Will my gas pipe need upgrading?

Sometimes. Older homes often have a gas supply in 15mm pipe, which can be too small for a modern combi when it is heating hot water. We check the gas rate and pressure at the survey and, if an upgrade is needed, it is included in your quote.

How long does a boiler installation take?

A like for like replacement in the same position is usually finished in one day. Moving the boiler, or converting from a tank-fed system to a combi, normally takes two to three days, depending on the pipework involved.

What paperwork do I get?

Every installation is notified for Building Regulations through the Gas Safe Register, so you receive a compliance certificate. We also complete the Benchmark commissioning record and register the boiler with the manufacturer so the warranty is active.

Get a Boiler Quote in Welwyn Garden City

Call 07342 171269, message us on WhatsApp or send the form to book a survey. You will get a fixed written quote with everything included.

Gas Boiler Installation Services inWelwyn Garden City

Best Price Guaranteed

Same Day Service

Upfront Pricing

New Boilers Planned Around Welwyn Garden City Homes

What Our Boiler Survey Covers

Signs It Is Time for a New Boiler

Repeat Breakdowns

Hot Water Running Hot and Cold

Rising Gas Bills

Over 15 Years Old

Boiler Installation Services in Welwyn Garden City

Combi Boiler Installation

System Boiler Installation

Regular to Combi Conversions

Like for Like Replacements

Flue and Gas Upgrades

System Cleaning and Protection

How Your Boiler Installation Works

Survey and Advice

Fixed Written Quote

Install and Commission

Why Welwyn Garden City Chooses APH

Fast response times

Qualified professionals

Transparent Pricing

5-Star Customer Reviews

What Our Customers Say

Trusted by Leading Brands

Boiler Installation in Nearby Towns

Planning a New Boiler in Welwyn Garden City?

Boiler Installation Welwyn Garden City: Your Questions

Get a Boiler Quote in Welwyn Garden City

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Gas Boiler Installation Services in
Welwyn Garden City