Boiler Installation
in Radlett

Boilers sized and installed for Radlett homes, from flats near the station to large family houses with several bathrooms. Gas Safe registered engineers, a proper survey and a clear quote before work is booked.

07342 171269 Get a Free Quote

Boiler Installers Covering WD7

Heating Larger Homes Properly

Many Radlett houses, particularly around Newberries, Gills Hill and Aldenham Avenue, are large detached homes with several bathrooms, extensions and long pipe runs. Replacing the boiler in a house like that is not a simple swap. Get the size or the system wrong and you end up with showers that lose pressure, rooms that never warm through or a boiler that cycles on and off all day.

So we start with the house rather than the boiler: how many bathrooms are used at once, how much heat the house needs, the size of the gas supply and the existing cylinder and controls. In most larger homes that points to a system boiler with an unvented cylinder, while the flats and smaller houses near the station are usually best served by a combi.

We come straight down Watling Street from our base in St Albans. For other plumbing and heating work in the village, see our Radlett plumbing and heating page.

What Matters in a Larger Installation

These are the details that decide whether a new boiler in a big house performs well for years or disappoints from the first winter.

Correct Sizing: A boiler that is too small struggles on cold days, and one that is far too big wastes gas by switching on and off. We size it to the house, not to the old boiler.
Hot Water Demand: Several bathrooms in use at once need stored hot water. A system boiler with an unvented cylinder keeps the pressure up at every shower.
Heating Zones: Under the Building Regulations, homes over 150 square metres need at least two separately controlled heating zones. We set these up so upstairs, downstairs or an extension can run on their own timings.
Gas Supply: Larger boilers need a gas pipe big enough to feed them. We check the run from the meter and upsize it where needed.
Unvented Cylinder Safety: An unvented cylinder runs at mains pressure and needs a yearly service to keep its safety valves working. We install and service them.

Signs Your Heating Has Outgrown Its Boiler

In bigger houses the problem is often not that the boiler has failed but that it no longer keeps up. These are the usual signs.

Showers Losing Pressure

If a shower drops to a trickle when someone else turns on a tap, the system cannot meet the demand of the house.

Hot Water Running Out

An undersized cylinder, or a combi trying to feed several bathrooms, leaves the last person in the morning with a cold shower.

Rooms That Never Warm Up

Extensions and top-floor rooms that stay cold often point to a boiler, pump or zoning setup that was never designed for the size of the house.

Constant Cycling

A boiler that fires up and cuts out every few minutes is often oversized or badly controlled, wasting gas and wearing out parts.

Installations for Every Size of Radlett Home

From compact combis in flats to full system upgrades in large family homes across WD7.

Combi Boilers for Flats

For flats and smaller houses near the station and Watling Street, a combi saves space and gives hot water on demand.

Boiler Replacement

Old or unreliable boilers removed and replaced with a correctly sized condensing model, reusing pipework that is still sound.

System Boiler and Unvented Cylinder

The usual choice for larger homes, giving strong, steady pressure across several bathrooms at once.

Heating Zone Upgrades

Separate zones and controls for different floors or an extension, so you only heat the parts of the house in use.

Multi-Zone Smart Controls

App-based controls that manage each zone separately and can be adjusted from your phone.

Breakdown Replacement

If your boiler has failed and is not worth repairing, we quote for a replacement and tell you honestly how soon we can fit it.

07342 171269 Get a Free Quote

How We Work

How We Plan a Radlett Installation

Survey the Whole System

We look at the boiler, cylinder, gas supply, flue route and controls, and work out the heat and hot water the house needs.

Design and Quote

We explain the system we recommend and why it suits the house, and give you a clear quote before anything is booked.

Install and Commission

We fit, flush and commission the system, set up the zones and controls, and register the installation as the law requires.

Why Radlett Homeowners Choose APH

Gas Safe registered engineers who take the time to size and plan an installation properly, from a firm that has worked across Hertfordshire since 2009.

Fast response times

Straight down Watling Street from our St Albans base.

Qualified professionals

Gas Safe engineers who plan zones, cylinders and gas supply properly.

Transparent Pricing

The full system costed up front, including cylinder and zoning work.

5-Star Customer Reviews

Consistently rated 5 stars by local customers.

07342 171269 Get a Free Quote

What Our Customers Say

Customers tell us what matters most is clear advice before the work starts and a tidy, well-finished installation.

      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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Boiler Installation Beyond Radlett

From our St Albans base we also install boilers in these Hertfordshire towns.

Call Today For Free Quote

Is Your Radlett Home Ready for a New Boiler?

07342 171269

Radlett Boiler Installation: Your Questions

Is a combi big enough for a house with several bathrooms?

Usually not. A combi heats water as you use it, so two or three showers running together will struggle. For larger Radlett homes we normally recommend a system boiler with an unvented cylinder.

What size boiler does my house need?

It depends on how much heat the house loses, not on the size of the old boiler. We work it out during the survey, taking into account the rooms, the insulation and your hot water demand.

Do you install unvented cylinders?

Yes. We install and service unvented hot water cylinders, which run at mains pressure and need a yearly service to keep the safety valves working properly.

Can you set up separate heating zones?

Yes. Homes over 150 square metres need at least two heating zones under the Building Regulations, and splitting upstairs, downstairs or an extension makes the heating cheaper to run and easier to control.

How much does a new boiler cost in Radlett?

It depends on the boiler, the cylinder, any zoning or gas pipe work and how much of the existing system can be reused. We survey first and give you a clear quote before any work begins.

Which parts of Radlett do you cover?

We cover all of Radlett in WD7, including Gills Hill, Newberries, Aldenham Avenue, Shenley Hill, Theobald Street, Watling Street and the area around the station.

Get a Boiler Survey in Radlett

Tell us about your house, how many bathrooms you have and what is installed now, and we will arrange a survey and a clear, no-obligation quote.

Boiler Installation in Radlett

Best Price Guaranteed

Same Day Service

Upfront Pricing

Heating Larger Homes Properly

What Matters in a Larger Installation

Signs Your Heating Has Outgrown Its Boiler

Showers Losing Pressure

Hot Water Running Out

Rooms That Never Warm Up

Constant Cycling

Installations for Every Size of Radlett Home

Combi Boilers for Flats

Boiler Replacement

System Boiler and Unvented Cylinder

Heating Zone Upgrades

Multi-Zone Smart Controls

Breakdown Replacement

How We Plan a Radlett Installation

Survey the Whole System

Design and Quote

Install and Commission

Why Radlett Homeowners Choose APH

Fast response times

Qualified professionals

Transparent Pricing

5-Star Customer Reviews

What Our Customers Say

Trusted by Leading Brands

Boiler Installation Beyond Radlett

Is Your Radlett Home Ready for a New Boiler?

Radlett Boiler Installation: Your Questions

Get a Boiler Survey in Radlett

Send Us a Message

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Boiler Installation
in Radlett