Skip to content
A Viessmann system boiler with two mixed heating circuits, a low loss header and an unvented cylinder

Boiler and Heating Engineer in Gerrards Cross

Heating Engineers in Gerrards Cross

Local, Gas Safe registered boiler and heating engineer covering Gerrards Cross and the surrounding area. Fixed prices, no call-out fee and a one year guarantee.

Gas Safe Registered Registration 586325
Viessmann Accredited Approved installers
Heat Geek Andrew, Heat Geek Elitist
One Year Guarantee On our work and parts

Information on this page last reviewed September 2026.

Gas Safe boiler and heating engineers in Gerrards Cross

Gerrards Cross has an exact birthday. The railway opened to passengers in 1906, and the council's 2009 appraisal says property developers were already hard at work by the time the line opened. Most of what makes the town what it is, the large detached houses, the garden-suburb streets, the conservation areas, dates from what they built. Home Comfort Assured is a Gas Safe registered heating firm based in Watford, number 586325, with no call-out fee. Boiler servicing, repairs and replacements are the core of what we do here, and the number to ring is 07970 632 064.

Wall mounted white combi boiler with a digital display, copper pipework and a black magnetic filter in a tiled kitchen corner

Local knowledge

Why Gerrards Cross customers call us

Station opened in 1906

Council documents say the line carried passengers from 1906, with developers already at work by the time it opened. They describe a town that grew into a Metro-land commuter suburb of large private estates.

8.6% semi-detached

In the Census area covering Gerrards Cross, 63.2% of households live in detached houses and only 8.6% in semis, against 31.5% across England and Wales. It is the lowest semi share of the five towns we work in.

75% in bands F to H

Of 3,720 properties in the same area, 1,700 are in council tax band G and 780 in band H. Derived from rounded figures, about three in four sit in bands F to H, the highest share of the five towns.

283 mg/l, a zone named for the town

Affinity's zone is called Rickmansworth and Gerrards Cross, and all nine postcodes we sampled fell in it. Its 2025 report reads 283 mg/l from one sample, which is in Affinity's hard band.

Two conservation areas, 2009

Gerrards Cross Common, first designated in 1987, and the Centenary or Garden Village area were both designated in April 2009. The council's appraisal lists obtrusive flues and vents among the threats to their character.

A short flood record

The only council investigation here is into the M25 and Fulmer Lane in 2014, a highway drainage failure. The council's older assessment puts a strip of Flood Zone 3a along the Misbourne at the eastern edge of town.

On the ground

Areas we cover in Gerrards Cross

We cover SL9.

The Common and the town centre

SL9

Gerrards Cross Common conservation area, first designated in 1987 and re-designated in April 2009, with the Edwardian church of St James, Grade II*, on Oxford Road.

The Garden Village

SL9

The Centenary conservation area, laid out from 1905 around the new station. South Park was laid out in 1906, Bulstrode Way the same year and the Latchmoor Estate in 1907.

Packhorse Road and the shops

SL9

The commercial heart of the town, where the former Barclays Bank of 1911 to 1912 is Grade II.

Where it meets Chalfont St Peter

SL9

SL9 covers both towns and the county's own historic assessments call the boundary imperceptible. Maltmans Lane, Austenwood Common, Latchmoor Way and North Park are on the Chalfont side.

A suburb with a start date

Buckinghamshire County Council's historic assessment of the town, written with South Bucks District Council's support in 2009, says that between the late eighteenth century and the railway's arrival in 1906 Gerrards Cross was called the Brighton of Bucks. After 1906 it grew quickly into a Metro-land commuter town with extensive private housing estates aimed at London's upper-middle class, a garden suburb of large Arts and Crafts houses with spacious gardens. It divides the building into three phases: 1905 to 1920, 1920 to 1939, and everything since. South Park was laid out in 1906 and the Latchmoor Estate in 1907. The assessment says most houses built between about 1908 and 1915 were designed by renowned architects in a style with timber-beamed gables sometimes called Tudorbethan. One of them, Chiltern House on The Woodlands, built in 1907, is Grade II.

The figures still show it. In the Census area covering the town, which also includes 32 Denham postcodes, 63.2% of households live in detached houses and only 8.6% in semis, the lowest semi share of the five towns we work in. 77.2% own their home. Of 3,720 properties, 250 date from 1900 to 1918, 410 from the 1930s, 630 from 1955 to 1964 and roughly a quarter from 2000 onward, which is the infill. Council tax is unusually high: 1,700 properties are in band G and 780 in band H, and about three in four are in bands F to H. Private renting at 20.2% in the wider ward matches the national rate, the highest of the five.

What size and age do to a heating system

A large house asks different things of a boiler from a small one. It usually means more than one bathroom, more hot water drawn at once, more radiators on a longer circuit, and a system that has probably been extended more than once in a hundred years. That is why the combi or system boiler question here is about the house and not the brand, and why we look at the house before recommending anything. A heating system in a house of this age has often been added to in pieces, so what matters is how the pieces fit together.

Gerrards Cross also has a second permission layer that most towns do not. The council's 2009 appraisal says the Garden Village's character has held largely because the restrictive covenants imposed by the Edwardian developers are still enforced. A covenant is separate from planning, and planning permission does not override it. If your deeds carry one, check it before a flue, a pipe run or an external unit is planned.

Flues and the two conservation areas

The town has two conservation areas: Gerrards Cross Common, first designated in 1987 and re-designated in April 2009, and the Centenary area, the Garden Village, designated in April 2009. The appraisal for both was written by South Bucks District Council. It lists obtrusive flues and vents as a negative feature on the Common, and notes numerous pipes and flues as an unsympathetic alteration in the Garden Village. It also names chimneys among the threats to the Garden Village's character, alongside uPVC windows and doors.

This is the only one of our five Buckinghamshire towns where a council document says so outright. The leaflet for residents at the back of the 2009 appraisal says that in a conservation area planning permission is needed for chimneys, flues, soil and vent pipes on a principal or side elevation fronting a highway, and adds that a public footpath counts as a highway. It is a legacy document and describes the rules of its day. The current national rule says the same in substance for a house: a flue on a wall or roof slope that fronts a highway and forms the principal or side elevation needs planning permission, and a flue at the back normally does not. Flats and maisonettes have no permitted development rights at all. Buckinghamshire Council publishes no flue wording of its own now, and there is no Article 4 direction covering the town on its current list of ten.

The town is not in the Chilterns National Landscape. The neighbourhood plan says Gerrards Cross is in close proximity to it, not inside it, and an indicative postcode test puts the town about three kilometres outside.

Water named for the town

Affinity Water supplies Gerrards Cross. Its own postcode lookup put all nine sampled postcodes in the zone called Rickmansworth and Gerrards Cross, which reads 283 mg/l of total hardness in the 2025 report from a single sample. Affinity's own scale calls 151 to 300 hard. That is lower than Amersham at 325, but scale forms wherever water is heated, in heat exchangers and around cylinder elements, and an annual service is how it gets caught early.

A flood record that is mostly about a motorway

Next door in Chalfont St Peter the council has written three flood reports. In Gerrards Cross it has written one, and it is about the M25. On 7 February 2014 blocked, silted ditches could not carry away the water from 20 millimetres of overnight rain, and three of the motorway's four lanes closed. The report records no earlier flood at that location and treats it as a highway drainage failure. The council's older flood assessment, from 2018, puts the Misbourne along the town's eastern boundary, with several properties and land in Flood Zone 3a, and an undated 2011 list names roads including Packhorse Road and Oak End Way, where the entry mentions springs and sewer problems, as known flooding sites. We found no recent council record of groundwater or sewer flooding in the town.

A Gerrards Cross boiler is not usually part of a flood story, and we would rather say so than invent one.

What the council has locally listed

Buckinghamshire Council's local heritage list, which is non-statutory, carries 184 adopted records with a Gerrards Cross address, most of them adopted in November 2024. We counted them by hand from the council's portal, so treat the figure as approximate, and they are houses, a station and a handful of landmarks, not listed buildings in the statutory sense. The statutory list includes the church of St James, Grade II*, built in 1859 to a design by Sir William Tite, and Bulstrode Park, where a house of 1676 to 1685 was rebuilt in 1860 to 1862. For a boiler the lesson is narrow: an older Gerrards Cross house may have a listed neighbour or a covenant, and it is sensible to ask first.

Who does the work

Andrew Millward has been at it for forty years, is a Heat Geek Elitist and is Viessmann accredited. Elis Harizi does all of our bathroom work. We will fit whichever make suits the house, and Viessmann is the one we reach for first.

Around Gerrards Cross

Chalfont St Peter runs straight on from the town, Denham lies the other side, and Chalfont St Giles is up the valley. Our heating page lists the full range of heating work.

To talk through a replacement, a service or a fault, ring Andrew or Elis on 07970 632 064.

Need us in Gerrards Cross?

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 Gerrards Cross.

Step by step

Booking a heating engineer in Gerrards Cross

Large houses and older conservation areas, so we start with the house.

  1. Ring and say what the system is doing

    Call 07970 632 064 and describe the fault or the job. You speak to Andrew or Elis.

  2. Tell us about the house

    How many bathrooms, roughly how large, and whether it is in the Common or the Garden Village conservation areas. If your deeds carry a restrictive covenant, say so, because it is a separate permission from planning.

  3. We check before we quote

    We look at the existing system and where a flue could come out. There is no call-out fee.

  4. The work

    Andrew or Elis does the job.

Common questions

Does Gerrards Cross flood?

Not in the council records we read. The council's 2018 flood assessment places the Misbourne along the eastern boundary of the town, with several properties and land in Flood Zone 3a, and its only investigation here was into the M25 and Fulmer Lane in February 2014, which was blocked ditches and a motorway, not homes. We found no recent council record of groundwater or sewer flooding in the town centre. That is a short list, and it is worth saying so.

I am in a conservation area. Do I need permission to move a flue?

For a house, not if the flue comes out of a wall or roof slope that does not face a highway. A 2009 South Bucks leaflet for the two conservation areas says permission is needed for chimneys, flues and soil and vent pipes on a principal or side elevation facing a highway, and adds that a public footpath counts as one. That leaflet predates the current rules, which say the same in substance, and Buckinghamshire Council publishes no flue wording of its own. There is no Article 4 direction covering Gerrards Cross on its current list.

Do restrictive covenants affect my boiler?

They can affect external alterations, which is a separate question from planning. The council's own appraisal says the character of the Garden Village has held partly because restrictive covenants imposed by the Edwardian developers are still enforced. Planning permission does not override a covenant. If your deeds carry one, check it before a flue, a pipe run or an external unit is planned.

What kind of boiler suits a large detached house?

It depends on the house and the hot water it uses, not on its size alone. More than one bathroom, a large floor area and several people drawing water at once usually point to a system boiler with a cylinder, not a combi. A smaller cottage or a flat is a different answer. We look at the house and the hot water it needs before recommending anything.

How hard is the water in Gerrards Cross?

Affinity Water's own postcode lookup put all nine Gerrards Cross postcodes we sampled in its Rickmansworth and Gerrards Cross zone, named for the town. The 2025 report gives total hardness of 283 mg/l from one sample, which is in the band Affinity calls hard. That is lower than Amersham, but scale still forms wherever water is heated.

Are you Gas Safe registered?

Yes, number 586325. Look it up on the register first if you like, and expect to be shown a card.

Recent work nearby

See more of our work
White Vaillant wall mounted boiler inside a narrow cupboard with copper pipework below and a vent above
White Vaillant wall mounted boiler inside a narrow cupboard with copper pipework below and a vent above. Photographed in St Albans.
Close up of a boiler control screen reading installation assistant completed, with the shadow of a person visible
Close up of a boiler control screen reading installation assistant completed, with the shadow of a person visible. Photographed in Chorleywood.
Wall mounted boiler on a plywood board with copper pipework, grey expansion vessel and filter in a bare room
Wall mounted boiler on a plywood board with copper pipework, grey expansion vessel and filter in a bare room. Photographed in Rickmansworth.

What our customers say

See more reviews on TrustATrader
Andrew specified what on the face of it looks like a complex set up, with mixing valves and weather compensation on a Viessmann 200 boiler. The system is logical and its operation is simplicity itself, which is the sign of good engineering. The comfort levels in the house are much greater.
Brian · Google review
Our underfloor heating had been installed with an outdated design and basic controls, so it never worked particularly well. Andrew optimised the system with intelligent controls and completely reworked plumbing. It has already saved us about 20% on our gas bill compared with the winter before.
Chris · Google review
Excellent service, reliable, friendly and professional.
Danny · Google review

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 at Home Comfort Assured

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 at Home Comfort Assured

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.