Heating Engineer in St Albans
Heating Engineer in St Albans
Local, Gas Safe registered heating engineer covering St Albans and the surrounding area. Fixed prices, no call-out fee and a one year guarantee.
Information on this page last reviewed October 2026.
Gas Safe heating engineers in St Albans
In St Albans, where a flue can go depends on the street. The city has 19 conservation areas, one of them so large that the council publishes it as 28 character areas, and in one road a flue needs planning permission on any wall at all. Home Comfort Assured is a Gas Safe registered heating firm based in Watford, number 586325, with no call-out fee, and we work on central heating, radiators, controls and boilers. Ring 07970 632 064 and tell us the address.
What we do
Our services in St Albans
Boiler repairs and servicing
Breakdowns, fault finding, annual servicing and replacement, on every major brand.
Read moreCentral heating
Radiators, valves, controls, power flushing and full system installation.
Read morePlumbing
Leaks and burst pipes, taps, cylinders, bathrooms and appliance installation.
Read moreUnderfloor heating
Design, installation and repair, wet systems in new builds and retrofits.
Read moreViessmann boilers
Why we are accredited, what the range does well, and how it compares.
Read moreNew boiler installations across St Albans
New boiler installation and replacement in St Albans by Gas Safe registered, Viessmann accredited engineers. Fixed quotes, all major brands, one year guarantee.
Read moreLocal knowledge
Why St Albans customers call us
Cunningham Avenue: a flue on any elevation
An Article 4 direction in force since 3 November 2014 means a chimney, soil pipe, vent pipe or flue there needs planning permission whatever wall it goes on, and so does an oil tank. The conservation area itself was designated on 28 January 2014.
19 conservation areas, one the size of a city
St Albans council counts 19 in the district, and publishes the St Albans Conservation Area as 28 numbered character areas, from Verulamium and the Abbey to Clarence Park and the Spencer Park Estate. The list is council-published and names streets, not vague districts.
The national flue rule, from the legislation
Elsewhere in those areas a flue on a wall or roof slope that fronts a highway and forms the principal or side elevation needs planning permission, under Class G of the 2015 order. The council publishes no restatement, so we cite the legislation.
Over 800 listed buildings, interiors included
The council says the protection covers the inside, internal features and later additions, and lists altering fireplaces and subdividing rooms as works needing consent. There is no fee for a listed building consent application.
St Albans Central: 55.8% flats
That is the Census 2021 share, derived from four categories, with Clarence Park at 48.9%, against 23.0% across the district. In the centre only 62.0% heat with mains gas alone, the lowest in the district.
On the ground
Areas we cover in St Albans
We cover AL1, AL2, AL3 and AL4.
Verulamium and the Abbey
Character areas 1 and 2a, the first entries in the council's published list of 28 for the St Albans Conservation Area.
Fishpool Street and St Michael's Village
Character area 4c. Verulam and Fishpool Street has an Article 4 direction, but its text is a scanned PDF that we could not read, so we do not say what it covers.
Clarence Park
Character area 7i, and a Census area of 3,294 households of which 48.9% live in flats.
Sopwell
A conservation area of its own, with an Article 4 direction for Sopwell Lane and Albert Street whose text we also could not read.
Mount Pleasant and Victoria Street
Character areas 5c and 7c, two more entries in the council's published list of 28.
Nineteen conservation areas, one the size of a city
The council's own page says there are 19 conservation areas in the district. Eighteen are named and each has a character statement: Amwell, Childwickbury, Cunningham Avenue, Gustard Wood, Harpenden, London Colney, Mackerye End, Napsbury, Old Bricket Wood, Park Street Frogmore, Potters Crouch, Redbourn, Sandridge, Shafford Mill, Sleapshyde, Sopwell, Waterend and Wheathampstead. The nineteenth is the St Albans Conservation Area itself, so big that its statement is split into 28 numbered character areas, from Verulamium and the Abbey to Clarence Park and the Spencer Park Estate.
That list is the best map of the city we have. It is council-published, and it names streets and quarters, not vague districts. The council does not publish which conservation area sits in which postcode district, so we do not claim a postcode-level rule. The address is what decides it.
Cunningham Avenue: the hardest rule in the district
The Cunningham Avenue Conservation Area was designated on 28 January 2014, and its Article 4 direction came into effect on 3 November 2014. It removes permitted development rights for the enlargement, improvement or other alteration of a dwelling house, and the council's own wording includes "chimneys, soil pipes, vent pipes, flues" among the additions. It also withdraws the right to put an oil storage container in the curtilage and to install microgeneration equipment.
In practice that means the national test that applies elsewhere, which turns on which wall a flue is on, does not save you in Cunningham Avenue. A chimney, soil pipe, vent pipe or flue there needs planning permission whichever elevation it goes on. The wording is the council's own.
Everywhere else in the conservation areas
For the other conservation areas the rule is national. Under Class G of the 2015 General Permitted Development Order, installing, altering or replacing a chimney, flue or soil and vent pipe on a dwellinghouse is permitted development, but not on land that counts as a conservation area where the work would be on a wall or roof slope that fronts a highway and forms the principal or side elevation of the house. The same rule says a flue may not stand a metre or more above the highest part of the roof. A flue out of the back of the house is not caught by the highway clause.
St Albans council publishes no restatement of that rule, and its leaflet "Living in a Conservation Area" does not mention flues, chimneys or vent pipes, so we work from the legislation itself.
Two directions we cannot read
Three of the district's four main Article 4 areas are in the city: Verulam and Fishpool Street, Sopwell Lane and Albert Street, and Cunningham Avenue. The first two are published as scanned images with no text we could read, so we do not say what they withdraw. If your house is in either, the council can tell you, and it is worth asking before a flue is planned. The fourth, Childwickbury, withdraws every class of permitted development at Childwick Green and its text names flues, but it uses the old lettering of the order, which is not today's.
Over 800 listed buildings, and the inside counts
The council says there are over 800 listed buildings in the district, and that the listing protects the whole building: the outside, the inside, internal features and later additions. Anything within the curtilage that dates from before 1 July 1948, or is attached to a listed building, may be treated as curtilage listed.
Two of the works the council lists as needing listed building consent come up in heating jobs all the time: altering internal walls or subdividing rooms, and any alterations to features like fireplaces and cornicing. There is no fee for a listed building consent application. Unauthorised works to a listed building are a criminal offence, and the council recommends checking with its design and conservation team if you are unsure.
The city centre is a different job
Across the district flats make up 23.0% of households, about level with England and Wales on the same four-category measure (21.7%). The figure hides two areas. St Albans Central is 55.8% flats and Clarence Park 48.9%, and in the centre only 62.0% of households heat with mains gas alone, the lowest in the district. A flat is a different job from a house: before anything else, who owns the boiler and who decides.
What we do
Central heating installation, repair and maintenance, radiators and valves, heating controls, and underfloor heating. Boiler work has its own pages: boiler servicing and repair in St Albans and new boiler installation in St Albans. Plumbing, from a leak to a bathroom, is on our plumbing page. We are gas engineers and do not work on oil.
Who does the work
Andrew Millward has forty years in the trade, is a Heat Geek Elitist and is Viessmann accredited. Elis Harizi does all of our bathroom work. We do the jobs ourselves.
Around St Albans
We are based in Watford, and Hemel Hempstead has a page of its own.
To get a flue route checked against the rule for your street, or to book heating work, call Andrew or Elis on 07970 632 064.
Need us in St Albans?
Call and speak to the engineer who will do the work, or ask for a quote. No call-out fee, and a one year guarantee on what we do in St Albans.
Step by step
Booking a heating engineer in St Albans
In St Albans the rules on a flue change from street to street, so we start with the address and what kind of building it is.
Ring and describe the job
Call 07970 632 064 and tell us what the heating is doing or what you want changed. You speak to Andrew or Elis.
Give us the address and the building
The road tells us whether you are in one of the 19 conservation areas, and whether it is Cunningham Avenue, where a flue needs permission on any wall. Tell us if it is a flat, a listed building or a house, because each is a different question. There is no call-out fee.
We check the flue route against that address
We look at the existing system and at where a flue could legally come out for your street. If the address is under one of the two city-centre directions we could not read, we ask the council what it withdraws.
The work
Andrew or Elis does the job. We are gas engineers, so oil and bottled gas systems are not something we take on.
Common questions
Do I need permission to move a flue in Cunningham Avenue?
Yes, on any wall. The Article 4 direction in force since 3 November 2014 means a chimney, soil pipe, vent pipe or flue there needs planning permission whichever elevation it goes on, unlike the national rule that applies elsewhere in conservation areas. The conservation area itself was designated on 28 January 2014.
I am in another St Albans conservation area. What is the rule?
The national one. In a conservation area a flue on a wall or roof slope that fronts a highway and forms the principal or side elevation of a house needs planning permission, under Class G of the 2015 order. A flue out of the back of the house is not caught by that clause. The council publishes no restatement of the rule, so we cite the legislation.
What if I am not in a conservation area at all?
The same order still has a height limit: a flue that would stand a metre or more above the highest part of the roof is not permitted development. Outside conservation areas the highway-facing test does not apply. A listed building or a specific Article 4 direction can still change that, so we check the address.
My house is listed. Does that affect a new boiler or flue?
It can. The council says listing protects the whole building, including the inside, internal features and later additions, and lists altering fireplaces and subdividing rooms among works needing listed building consent. There is no fee to apply, and unauthorised works are a criminal offence, so check with the council's design and conservation team if you are unsure.
I am in a flat in the city centre. Is it different?
It usually is. St Albans Central is 55.8% flats and Clarence Park 48.9%, and in the centre only 62.0% of households heat with mains gas alone, the lowest in the district. The first questions are who owns the boiler and who decides, before anyone looks at the flue.
Are you Gas Safe registered?
Yes, number 586325. You can look it up on the Gas Safe Register.
Recent work nearby
See more of our work
What our customers say
See more reviews on TrustATraderAndrew was prompt, polite, respectful, assured and reassuring in resolving a problem with the central heating in my parents house.
We used Elis again because he is brilliant. Efficient and helpful.
Elis and Andrew installed our new boiler system and tank. They saved us a fortune by finding a leak and working out a cost effective solution. I honestly believe they are the best in the business. We have asked Elis back for several jobs since.
Meet your engineers
The engineers who turn up
Two engineers, both Gas Safe registered under registration 586325. When you book Home Comfort Assured, this is who does the work.
Andrew Millward
Founder and heating engineer
- 40+ years experience
- Heat Geek Elitist
- Viessmann accredited
Andrew has over 40 years in the trade and specialises in fault finding, boiler and heating repairs, and the design of energy efficient systems like heat pumps and underfloor heating.
Andrew on YouTube
Elis Harizi
Director and plumbing & heating engineer
- Plumbing since 2007
- Heat Geek member
- Gas qualified
Elis trained as a plumber in Greece in 2007, moved to England to gain his gas qualifications, and now designs and installs energy efficient heating as a Heat Geek member.
Got a job that needs sorting?
Call and speak to an engineer, or request a quote. No call-out fee, and we work across Hertfordshire and south Buckinghamshire.