24/7 EMERGENCY
Burst pipe? Boiler down? No hot water? Engineers on call right now —
Mon–Fri 8am–6pm · Sat 9am–5pm ·
Emergency line open 24/7
Gas Safe Reg: 123456
Trustpilot 4.9★
24/7 EMERGENCY
Burst pipe? Boiler down? No hot water? Engineers on call right now —
Emergency line open 24/7
Gas Safe Reg: 123456
Trustpilot 4.9★
We replace vented and unvented hot water cylinders across Islington — from airing cupboard cylinders in Barnsbury and Canonbury’s Georgian and Victorian houses to compact unvented systems in Angel and Holloway’s flats. Fixed price, same-day survey, 12-month guarantee.
N1
N4
N5
N7
N19
🔒 No obligation. Fixed price confirmed before any work starts.
Cylinders typically last 10 to 15 years, and many properties across Barnsbury and Canonbury are still running original units well past that age. Here are the signs our engineers see most often.
Water pooling around the base of the cylinder or damp patches in the airing cupboard usually means the tank itself has started to corrode and fail — a clear sign replacement is needed.
A cylinder that can't keep up with demand, or produces lukewarm water where it used to run hot, often points to a failing heating coil or a cylinder that's simply too small for the household.
Scale build-up inside an older cylinder can cause kettling and banging noises, particularly in Islington's older systems that have never been serviced or descaled.
Even without an obvious fault, an older cylinder becomes more prone to sudden failure over time. Many Islington homeowners choose to replace proactively rather than risk a leak.
The right cylinder type depends on your existing system, available space and hot water demand.
Fed by a cold water tank in the loft, vented cylinders are typically the lower-cost option and suit properties without the space or budget for an unvented upgrade — common across Islington's Georgian and Victorian terraces.
Fed directly from the mains, unvented cylinders deliver strong, consistent pressure to every outlet without needing a loft tank — a popular upgrade for flats in Angel and Holloway without loft space for a tank.
A full survey-to-sign-off service — carried out at a fixed price agreed before any work begins.
We assess your current system, water pressure and hot water demand to recommend the right cylinder type and size.
You receive a fixed price for the full replacement, including removal of the old cylinder, before any work starts.
The old cylinder is drained and removed, the new unit fitted and connected, and all work carried out to current water regulations.
The system is tested, you're shown the controls, and the installation is covered by our 12-month workmanship guarantee.
Cost depends on cylinder type and size, and whether it’s a like-for-like swap or an upgrade. All prices are confirmed before we attend — no call-out charge.
Standard replacement, same size and position
Upgrade to a larger cylinder for higher demand
Standard replacement, same size and position
Diagnosis and replacement of faulty component
Cold spots, no heat, or thermostat fault investigation
Safety check and expansion vessel test
Fixed price policy: all prices confirmed before work begins — no call-out charge, no hidden extras, no inner-London zone surcharge. The price you approve is the price on the invoice.
Fast arrival for power flushing across N1, N4, N5, N7, N19 and EC1 — without the delays of London-wide dispatch.
We're experienced with both cylinder types and recommend the right one for your property, not just what's quickest to fit.
From Barnsbury's vented airing cupboard cylinders to Angel's compact unvented flat systems — we've replaced every type across the borough.
Same pricing whether you're in N1 Angel or N19 Archway.
A 4.9★ rating from local customers on both Trustpilot and Google.
All installation work carries our 12-month workmanship guarantee, issued in writing before we leave your property.
Read all reviews on Trustpilot →
Old cylinder in our Barnsbury airing cupboard had started leaking. Replaced same day with a like-for-like unit, tidy job and explained the warranty clearly.
No space for a loft tank in our Angel flat, so a compact unvented cylinder was fitted instead. Water pressure is fantastic now compared to before.
Cylinder in our Highbury house was making a horrible banging noise. Turned out to be scale build-up — replaced with a new unit and it’s silent now.
Yes. We cover the entire Islington borough including Angel, Islington, Highbury, Holloway, Canonbury, Barnsbury, Finsbury Park and Archway — postcodes N1, N4, N5, N7, N19 and EC1. Our engineers are based locally across North London.
A like-for-like vented cylinder replacement starts from £900, rising to £1,030 for a larger capacity upgrade. A like-for-like unvented cylinder replacement starts from £1,700, and a full vented to unvented upgrade starts from £2,500. All prices are confirmed before work begins.
This depends on your mains water pressure, available space, and how much stronger hot water pressure would benefit your household. Flats without loft space, common across Angel and Holloway, often benefit particularly well from an unvented system. Our survey confirms whether your property is suitable.
Most cylinders last 10 to 15 years with normal use. Beyond that, the risk of leaks and failures increases, and many homeowners in Islington choose to replace proactively rather than wait for a failure to occur.
Same-day callouts, fixed price agreed before we start. Call now or book online.
We also cover these neighbouring boroughs — same fixed prices, same engineers.