Service area · London
Islington is a borough of elegant period terraces — Georgian around Barnsbury and Canonbury, Victorian across Highbury, Holloway and Tufnell Park — with a growing stock of modern conversions and new builds in and around Angel, King's Cross and the City Road corridor. The work we do here reflects that mix: careful period retrofits, flat conversions that need thinking about, and newer stock where specification choices are wide open.
The borough is also one of the most conservation-protected in London. Barnsbury, Canonbury, Duncan Terrace, Highbury Fields and Clerkenwell all have conservation area status, and we treat external plant siting — boiler flues, heat pump outdoor units, air conditioning condensers — with the care those rules deserve. We check designation before quoting, not after.
We quote properly, install cleanly, and look after you afterwards. The standard of work that suits a grade II terrace in Canonbury is the same standard we apply to a two-bed flat off Holloway Road. That's the approach that has built our reputation, and it's the only way we know how to work.
Borough
London Borough of Islington
Postcodes
N1, N5, N7, N19, EC1
Population
~220,000
Typical property
Period terrace or converted flat
What we work on
Georgian and early-Victorian terraces in Barnsbury, Canonbury and Duncan Terrace. Later-Victorian stock across Highbury, Holloway, Tufnell Park and Finsbury Park. Converted flats from larger period houses — much of Islington's residential stock is in flats rather than whole houses. Modern apartment developments around Angel, King's Cross and City Road. A smaller number of mansion blocks in N5 and N7.
What Islington homes ask for most
Boiler replacement is the bread-and-butter job in Islington — typically combi boilers for flat conversions, and system boilers for larger houses with multiple bathrooms. Air conditioning is growing quickly, particularly in top-floor and west-facing flats. Underfloor heating shows up regularly in basement and ground-floor extensions, which are a common Islington pattern. Heat pumps are viable but need proper siting analysis given the space constraints in central Islington.
Primary focus
Gas and electric boiler installation, replacement, repair. Viessmann-trained engineers.
Learn moreAlso available
Daikin-approved air conditioning installs for London homes. Split, multi-split and VRV systems.
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Wet underfloor heating for new builds, extensions and retrofit projects.
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Annual servicing, emergency repairs and warranty work across every system we fit.
Learn moreLocal considerations
01
Barnsbury, Canonbury, Duncan Terrace, Highbury Fields, Clerkenwell, Tufnell Park — large areas of residential Islington are in conservation areas, and listed buildings are common in the Georgian squares. External plant siting needs proper thought. We handle the research before quoting.
02
Many Islington flats are in converted period houses with complicated shared flue arrangements. We check the existing flue compliance as part of the survey — some of what we find pre-dates current regs and needs rethinking.
03
Permit-only parking across the borough. Many period houses have lightwells and basement entrances worth using for plant delivery, which we coordinate with you on survey day.
Representative projects
Illustrative of typical installations in the area. Verified customer case studies with permissions are added as they become available.
N1
postcode area
A Barnsbury flat conversion — old combi in the kitchen had been limping along for years. Like-for-like swap plus a thorough chemical flush, new magnetic filter, and fresh TRVs on every radiator. Flue terminal carefully sited in compliance with the shared flue arrangement for the building.
N5
postcode area
A Highbury top-floor flat with three west-facing rooms that became unusable in summer. Three slimline wall-mounted indoor units, condenser sited on a flat roof section invisible from street level. Full F-Gas commissioning and Daikin Online Controller set up.
N7
postcode area
A Holloway house retrofit combining a new heat pump with wet underfloor heating across the ground floor (kitchen, hallway, dining room). Manifold designed for room-by-room control, pipework laid during an existing refurbishment so no disruption beyond what was already planned.
Customer stories
Placeholder reviews shown while we build a verified Google and Checkatrade profile.
Replaced our old combi with a heat pump. Quiet, much cheaper to run, and the team left the plant room tidier than they found it.
Rachel M.
Dulwich · Heat pump
We had three quotes for a new Viessmann boiler. Thermalwerk was not the cheapest, but they were the only ones who actually explained the sizing.
David K.
Islington · Boiler replacement
Two Daikin units fitted across an open-plan living space. Clean cable runs, properly commissioned, works brilliantly. Glad we waited for them.
Priya S.
Kensington · Air conditioning
Talk to us
Tell us the postcode and the system you're thinking about — we'll come back the same working day with a proper plan and a realistic timeline.