HERTFORDSHIRE, BEDFORDSHIRE & CAMBRIDGESHIRE
New boilers in St Albans from Gas Safe engineers: combi, system and regular swaps from £2,375 + VAT (£2,850 including VAT), the old boiler removed and the warranty registered for you.

St Albans is one of the more challenging towns to fit boilers across Hertfordshire, and that’s because of its housing mix. The district has 19 designated conservation areas, more than almost anywhere comparable. We work regularly on the medieval and Tudor properties around the Cathedral and French Row, the Georgian terraces along Holywell Hill and Fishpool Street (many of them listed), the Victorian and Edwardian villas around Clarence Park and Bernard’s Heath, the Edwardian and inter-war terraces through Fleetville, and the 1920s and 30s garden suburb of Marshalswick. Then there are the post-war estates and the 1970s and 80s housing in Jersey Farm. Every one of those property types throws up something different on a boiler installation.
We price every job honestly and tell you upfront whether yours involves conservation area considerations, gas supply upgrades, or pipework that needs attention.
St Albans is supplied by Affinity Water from underground chalk aquifers via the St Albans South Treatment Works, and the water hardness in town runs around 338 mg/l of calcium carbonate. That puts St Albans in the UK’s top 10 hardest water areas. For a modern combi boiler, that translates to significant heat exchanger scaling within five or six years if it isn’t protected from day one.
We almost always fit an inline scale reducer on the cold mains feed as part of the install. Small added cost, large protection for the heat exchanger over the life of the boiler. Some Worcester and Vaillant warranties are conditional on a scale reducer being fitted in very hard water postcodes like AL1, AL3 and AL4. We’ll always check whether yours qualifies before committing to a warranty length on the quote.
Call and talk to an engineer on 01462 506 374, or send us the details and we will come back to you with a fixed price.
Easily the most-requested brand in central St Albans. Customers ask for it by name, and the compact Greenstar 4000 range fits comfortably inside the kitchen cupboards typical of Victorian terraces around Clarence Park, Fleetville and Bernard’s Heath. Parts availability is excellent if anything needs attention years later.
Our preferred choice for system boiler upgrades, particularly the ecoTEC plus range. We fit these regularly in the substantial Victorian and Edwardian villas around Marshals Drive, Clarence Park and the larger detached homes in Marshalswick and Jersey Farm, anywhere there’s an existing hot water cylinder the homeowner wants to retain.
Sensible mid-budget choice for the post-war and inter-war housing across Fleetville, parts of Marshalswick, and the 1970s and 80s estates in Jersey Farm. Logic Max and Vogue Max are reliable, easy to service, and the warranty terms are competitive.
Get a fixed price before we start
Call and talk to an engineer, or send us the details and we will come back to you with a price.
Many of these are listed buildings, which means flue placement, condensate routing and any external pipework needs careful design. We’ve worked on enough of these to know what listed building consent typically allows. Internal routing, discreet rear-elevation terminations, and sympathetic positioning are usually the answer.
Substantial period homes with original cylinders still in airing cupboards, often original 15mm gas supply that needs upgrading to 22mm for a modern combi. We do a gas working pressure test on the survey and tell you exactly what’s needed, the cost is on the quote, not added later.
The narrow Victorian terraces along Cambridge Road, Hatfield Road and the streets around Fleetville Recreation Ground often have flue routing constraints because of adjoining party walls and rear extensions added in the 1980s. We measure carefully on the survey.
Larger semis and detached houses with relatively generous bathroom and kitchen layouts. These are typically our most straightforward St Albans installs, sensible pipework, clear airing cupboards, no conservation complications outside the small Marshalswick Conservation Area itself.
Modern construction with standard 22mm gas runs and predictable flue routes. Often the existing boiler is being replaced because the warranty has just expired and the homeowner wants better efficiency. Most are completed in a single day.
Combi, system and regular swaps, the old boiler removed and the system cleaned, with a fixed price before we start.
A like-for-like combi swap in St Albans usually lands £2,200 to £3,400 fitted, depending on brand and warranty length. More involved jobs, system conversions, back-boiler removals, relocations, larger system boilers with cylinder work in the bigger Marshals Drive or Clarence Park properties, typically sit £3,400 to £5,200. Listed buildings can run higher because of the design care required.
★★★★★
Rated 4.9 on Google by the people we work for
Rated 4.9 on Google from more than 750 reviews across Google, Checkatrade and Trustatrader. Qualified, accredited engineers, a fixed price before any work begins and a labour guarantee on every job, from an established local company with an office team you can actually reach. No job too small.
Gas Safe registered
Company registration 956889. Every gas engineer carries their own Gas Safe ID card, and you can ask to see it.
Refcom F-Gas certified
REF1024550. Legally required for air conditioning installation and servicing, and we hold it.
CHAS Elite accredited
Veriforce CHAS assessed for health and safety, which is why commercial clients and landlords use us.
City & Guilds and BPEC qualified
Qualified, insured engineers on every job. No subcontracted strangers.
750+ reviews, 4.9 on Google
Across Google, Checkatrade and Trustatrader. Read them before you book.
Labour guarantee on every job
12 months on repairs, installations and everything else. Two years on a full bathroom refit. If anything we did develops a fault, we come back and put it right.
Fixed price before we start
The price is agreed with you before any work begins. No hidden extras on the invoice.
24/7, answered by a person
The emergency line is answered every day of the year by someone who can send an engineer, not a call centre.
Fully stocked vans
Five vans carrying the parts that fail most often, so most jobs are fixed on the first visit.
An office team behind every job
An established local business with multiple engineers and a dedicated office team to keep you informed.
Vaillant myREWARDS and Ideal Max accredited
Accredited installer status means extended manufacturer warranties on the boilers we fit.
Emergency response within the hour
Our average response to an emergency call is under an hour across Hertfordshire, Bedfordshire and Cambridgeshire.
It depends on the property and where the flue needs to terminate. Conservation areas don’t usually need permission for boiler installations themselves, but flue placement on prominent elevations can be a planning consideration. Listed buildings (different from conservation areas) need listed building consent for any external alterations. We tell you honestly during the survey.
For a planned install, usually within 3 to 5 working days. If your old boiler has packed up and you’ve got no heat or hot water, we prioritise, same-day or next-day in most cases.
Often it needs upgrading to 22mm to support a modern combi at full output. Very common in the older terraces around Clarence Park and Fleetville. We test on the survey and tell you whether yours needs upgrading, with the cost itemised on the quote.
We can advise on what’s likely to be acceptable based on our experience, but listed building consent is normally something the homeowner handles directly with the council (sometimes through their architect). We provide technical specifications for the application if you need them.
Generally we don’t. The manufacturer warranties we offer (up to 12 years on Worcester and Vaillant) are conditional on us being an accredited installer and registering the install. If you supply, the warranty drops to the standard 2 years.
We’re based in Hitchin, around 30 minutes from St Albans, with engineers working AL1, AL3 and AL4 regularly. Not a national outfit routing through a call centre, you’ll speak to the same office team every time.
Not every heating call turns out to be the boiler. For taps, leaks, stopcocks and the rest of the everyday work, see everyday plumbing in St Albans.
Online quote in under 2 minutes. Fixed price by email, no obligation, no follow-up sales calls.
Fixed price swaps from £2,375 + VAT
Annual service, £99 + VAT
Sludge out, heat back, from £595 + VAT
Full systems, designed properly
G3 installs and servicing
Every rate, published
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