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G3 qualified engineer installing a direct unvented hot water cylinder in a London flat
G3 Qualified — Electric-Only Cylinders

Direct Unvented Cylinder London — Supply & Fit from £1,495

Direct (electric-only) unvented hot water cylinders installed across every London borough. Twin 3 kW immersion heaters, full G3 inlet group, Economy 7 wiring, Building Regulations Part G3 notification included. Megaflo Eco Plus Direct, Telford Hurricane, Kingspan Albion, OSO Super S and Gledhill StainlessLite specialists.

The right cylinder for all-electric London flats, solar PV homes, heat pump retrofits and properties with no gas supply. Fixed-price quote on site before any work begins.

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G3 Qualified engineers
25yr Tank warranty
£5M Public liability
BS EN 12897 compliant
Same day diagnostics
Quick Answer

A direct unvented cylinder is a sealed pressurised hot water store heated only by electric immersion heaters — no boiler involved. It is the right choice for all-electric London flats, solar PV homes and heat pump retrofits. ERL supply-and-fit pricing in London runs £1,495–£2,595 depending on size, with twin 3 kW immersions, full G3 group, Economy 7 wiring and Building Regulations Part G3 notification all included. Call 0207 046 1363 for a fixed-price quote.

What is a direct unvented cylinder?

A direct unvented cylinder is a sealed, mains-pressure hot water store heated only by electric immersion heaters. There is no boiler primary coil, no central heating involvement, no flow and return pipework. The cylinder lives entirely on the electric supply — typically two 3 kW immersion elements bolted through the cylinder body, one near the bottom and one near the top, each on its own thermostat and isolator.

The reason London property owners pick direct over indirect is almost always pragmatic. The flat or house has no gas supply. The boiler has been removed in an air-source heat pump retrofit. The customer is on a solar PV array with an immersion diverter feeding free electricity into the bottom element. The mansion-block freehold won't allow a new gas run to the upper floors. Every London estate built since 2018 with all-electric heating defaults to a direct cylinder in the airing cupboard.

The cylinder itself runs at mains pressure — typically 3.0–3.5 bar after the inlet pressure-reducing valve — so every hot tap and shower feels as strong as the cold. The compliance and safety story is identical to an indirect unvented cylinder: Approved Document G3, BS EN 12897, four layered safety devices, Benchmark logbook, annual G3 service. The difference is the heat source, and that simplification (no primary circuit, no boiler interlock, no motorised valve) is what makes direct cylinder installs typically a half-day rather than a full day. For the full route map between direct, indirect, vented and unvented, see our hub guide on hot water cylinder replacement London.

Sizing guide — direct unvented cylinder by London property

Direct cylinders need a slightly more generous sizing than indirect because the immersion recovery time is longer — you cannot rely on a fast gas reheat between back-to-back showers. Size up one bracket if everyone in the household showers inside the same hour, or if the property is on a single-rate tariff and you cannot lean on overnight Economy 7 reheats.

SizeBest forRecoveryFrom
120L1-bed flat / 1 occupant / 1 bathroomTwin 3 kW: ~3.5 hours cold-to-60°C£1,495
150L2-bed flat / 2 occupants / 1 bathroomTwin 3 kW: ~4.2 hours cold-to-60°C£1,595
180L2-3 bed flat / 3 occupants / 1 bathroomTwin 3 kW: ~5.0 hours cold-to-60°C£1,745
210L3-bed terrace / 3-4 occupants / 1 bathroomTwin 3 kW: ~5.8 hours cold-to-60°C£1,895
250L3-4 bed family home / 2 bathrooms (off-peak only)Twin 3 kW: ~6.9 hours cold-to-60°C£2,195
300L4-5 bed home / 2-3 bathrooms (Economy 7 essential)Twin 3 kW: ~8.3 hours cold-to-60°C£2,595

* Fitted prices include VAT, twin 3 kW immersions, full G3 group, discharge pipework, commissioning and Building Regulations notification. Vented-to-direct conversion adds £350–£500.

Direct vs indirect unvented — which do you need?

The choice is dictated by your heat source. If you have a working gas, oil or LPG boiler serving central heating, an indirect cylinder is normally faster and cheaper to run. If you have no gas, an all-electric flat, a heat pump that doesn't serve DHW, or a solar PV array with an immersion diverter, a direct cylinder is the right pick.

FactorDirect unventedIndirect unvented
Heat sourceElectric immersion heaters only — typically twin 3 kW elements built into the cylinder.Boiler primary coil heats the stored water indirectly. Immersion is backup only.
Best forAll-electric flats and homes, no gas supply, properties with heat pumps or solar PV, off-grid London builds.Homes with a working gas, oil or LPG system boiler that already serves central heating.
Recovery timeSlower — 4–8 hours full reheat on 3 kW. Twin immersions running together cut this in half.Faster — 24 kW boiler can reheat a 180L tank in under 60 minutes from cold.
Running cost (UK avg)Peak electric ~28p/kWh. Economy 7 night rate ~12p/kWh — direct cylinders shine on dual-tariff.Mains gas ~6.5p/kWh — typically the cheapest unit cost in a gas-supplied London property.
Install footprintSmaller — no primary pipework, no motorised valve, no boiler interlock. Often a half-day install.Larger — primary flow / return to boiler, motorised diverter or zone valve, S-plan or Y-plan wiring.
Suits heat pump?Yes — direct cylinders pair with most ASHPs that have an immersion-only DHW mode, though dedicated ASHP cylinders give better COP.Yes — preferred for ASHP / hybrid systems because the heat pump heats via the primary coil at low flow temps.

Need the indirect version? See our indirect unvented cylinder London page. Still on a vented system? See vented-to-unvented conversion.

Brand comparison — direct unvented cylinders we fit

Every brand below is a duplex stainless steel cylinder with a 25-year tank warranty when serviced annually. The differences are parts warranty, element type, footprint and supply lead time. We carry vessels, elements and T&P valves for all six on the van.

Megaflo Eco Plus Direct unvented cylinder installed in a London airing cupboard

Heatrae Sadia Megaflo Eco Plus Direct

70L–300L (direct range)
ElementsTwin 3 kW Incoloy 825 (corrosion-resistant)
Warranty25-year tank, 2-year parts
NotesMost stocked direct cylinder in London. Vessels, T&Ps and elements on every G3 van. Industry standard.

Telford Hurricane Direct

120L–300L
ElementsTwin 3 kW Backer (UK-made)
Warranty25-year tank, 2-year parts
NotesSlightly cheaper than Megaflo at supply. Strong on smaller sizes for 1-bed and 2-bed flats.

Kingspan Albion Ultrasteel Direct

90L–300L
ElementsTwin 3 kW Incoloy
Warranty25-year tank, 5-year parts
NotesBest parts warranty in the direct sector. Slim variants available for tight London airing cupboards.

Gledhill StainlessLite Plus Direct

90L–300L
ElementsTwin 3 kW with high-limit cut-out
Warranty25-year tank, 1-year parts
NotesBritish-made duplex stainless. Strong choice for HMO installs where simultaneous draw matters.

OSO Super S Direct

150L–300L
ElementsTwin 3 kW Incoloy, dual stat
Warranty25-year tank, 5-year parts
NotesPremium Norwegian-built duplex. Quietest direct cylinder we fit. Slight price premium.

Range Tribune HE Direct

120L–300L
ElementsTwin 3 kW (top + bottom)
Warranty25-year tank, 2-year parts
NotesSolid mid-market option. Compact footprint, good for compact 2-bed Victorian conversion flats.

Cross-shopping a specific model? Read Megaflo Direct London, the Telford comparison, or the 2026 best cylinder pillar guide.

Direct unvented cylinder cost London — 2026 prices

Every figure below is a fixed quote given on site after a 30-minute survey. Cylinder, twin immersions, G3 inlet group, discharge pipework, electrical safety check, commissioning, Benchmark logbook and Building Regulations notification all included. No hidden parts mark-up, no parking add-ons, no surveyor fee.

JobWhat's includedTypical cost
Direct unvented install — 120L (1-bed flat)Supply & fit 120L direct unvented cylinder, twin 3kW immersions, G3 inlet group, expansion vessel, T&P, discharge pipe to outside, dedicated immersion circuit check, commissioning, Building Regs G3 notification.£1,495
Direct unvented install — 150L (2-bed flat)150L direct unvented (Telford Hurricane / Heatrae Sadia Megaflo Eco Plus Direct), full G3 group, twin immersion wiring, certificate.£1,595
Direct unvented install — 180L (3-bed terrace)180L direct cylinder, factory-fitted Economy 7 wiring loom for dual-tariff users, full G3 kit, discharge route, commissioning, certificate.£1,745
Direct unvented install — 210L (3-4 bed)210L direct stainless cylinder, twin 3kW immersions with separate isolators, full inlet group, discharge to outside, electrical safety check, certificate.£1,895
Direct unvented install — 250L (large family home)250L direct cylinder, dual immersion install, off-peak timer wiring if Economy 7 fitted, full G3 group, secondary circulation if specified, certificate.£2,195
Direct unvented install — 300L (HMO / large home)300L stainless steel direct cylinder, twin 3kW immersions, dedicated Economy 7 circuit, full G3 kit, commissioning, certificate posted within 30 days.£2,595
Immersion heater element replacementDrain to immersion boss, swap element + thermostat (Megaflo / Tesla / Backer), refill, vent, electrical safety check, recommissioning.from £225
Twin immersion upgrade (single → dual)Add second immersion to existing single-element cylinder where boss is available, new dedicated immersion circuit from CU, Economy 7 timer optional.from £385
Vented to direct unvented conversionStrip out loft tank + vented cylinder, fit direct unvented + full G3 group, decommission loft pipework, rewire immersion circuits, Building Control notification.from £2,495
Annual G3 service (direct unvented)Expansion vessel pre-charge, T&P witnessed lift, PRV outlet pressure, both immersion elements resistance-tested, both thermostats verified, anode check, certificate emailed.£155

* Prices include VAT and Building Regulations G3 notification where applicable. Full price list on the pricing page; see also the in-depth 2026 cost guide.

Need a quote on a specific size or brand?

Call 0207 046 1363

Our 5-step direct unvented install process

1

Free phone consultation + indicative quote

10 min

Call 0207 046 1363 or WhatsApp 07456 975436 with the size you have or want, the airing-cupboard dimensions, and whether you have Economy 7. We give an indicative supply-and-fit figure on the call inside ten minutes.

2

On-site survey

30–40 min

G3 engineer attends, measures cylinder space, confirms mains pressure (1.5 bar minimum dynamic), checks the immersion circuit at the consumer unit, plans the discharge route to outside, and issues a fixed-price written quote.

3

Booked install date

1–7 days

Cylinder ordered from the wholesaler the same day. Typical lead time from quote to install day is 3–5 working days for standard sizes (120–250L). Larger 300L stock orders may stretch to 7 days.

4

Install day

4–6 hours

Old cylinder drained and decommissioned. New direct cylinder set, G3 inlet group fitted (PRV, expansion vessel, T&P, tundish), discharge pipework run to outside, immersion circuits terminated and tested, system pressurised, both elements run-up to 60°C and witnessed.

5

Commissioning + Benchmark

Same visit

Both safety devices witnessed-tested, thermostats verified, all readings logged into the Benchmark logbook, Building Regulations G3 notification filed via our Competent Persons Scheme, certificate posted within 30 days.

G3 compliance & Benchmark commissioning

Direct unvented cylinders are treated identically to indirect cylinders under the Building Regulations — every install is a controlled service requiring G3 qualification, notification to Building Control, and a completed Benchmark logbook entry to activate the manufacturer's 25-year tank warranty. ERL self-certifies via the WaterSafe Competent Persons Scheme; your Compliance Certificate arrives by post within 30 days of the install date.

Temperature and pressure relief valve and tundish on a direct unvented hot water cylinder
G3

Approved Document G3 — Hot water supply and systems

Every direct unvented cylinder over 15 litres is a controlled service. Installation, modification and commissioning must be carried out by a person holding a current G3 (BPEC HWSS) qualification, and the work notified to Building Control directly or via a Competent Persons Scheme. We self-certify via WaterSafe and BESCA — your compliance certificate is posted within 30 days.

BS EN 12897

Directly heated unvented hot water storage

The product standard that governs cylinder construction and the layered safety devices: working thermostat, non-self-resetting energy cut-out, expansion device and temperature & pressure relief valve. Every direct cylinder we fit carries the EN 12897 mark on the data plate.

BS 7671

18th Edition Wiring Regulations (2018+A2:2022)

Direct cylinders are entirely electric — the immersion circuits must comply with BS 7671. Each immersion needs a dedicated 16A or 20A circuit from the consumer unit, RCD-protected, on the correct cable size. We notify Part P alongside G3 where the immersion circuit is new or modified.

WRAS / Water Fittings 1999

Water Supply (Water Fittings) Regulations 1999

All wetted components — PRV, expansion vessel, tundish — are WRAS-approved. The install is notifiable to Thames Water (or your supplier) where the system arrangement changes. We handle the notification on every conversion job.

HSG274 / L8

Legionella control in water systems

Stored water must be held at or above 60°C and reach the furthest outlet at 50°C within one minute. Direct cylinder thermostats are commissioned to 60°C as standard. On HMO and care installs we cycle a weekly 65°C anti-legionella pasteurisation via the timer.

Benchmark (HHIC)

Hot water commissioning scheme

Every Megaflo, Telford, Kingspan, OSO, Gledhill and Range cylinder ships with a Benchmark logbook. Completion of the commissioning page is the condition that activates the 25-year tank warranty. We complete and sign every page on handover.

Want to read the regulatory deep-dive? See our G3 engineer London page for the credential framework and notification process.

Real London direct cylinder jobs

Anonymised examples from the last twelve months of direct unvented work across London. Every figure is the final invoiced amount inc. VAT — no hidden line items added afterwards.

1-bed flat, Camden — Megaflo 120L Direct install (all-electric block)

Conversion of an old vented copper cylinder + loft tank to a 120L Megaflo Eco Plus Direct in a 1980s purpose-built block with no gas supply on the floor. New G3 group, twin 3 kW immersions wired off a new 20A circuit, discharge through the external wall to the rear gully. Full day on site. Final invoice: £1,495 fitted inc. VAT, certificate posted Day 14.

Top-floor maisonette, Islington — Telford Hurricane 180L on Economy 7

Owner on Economy 7 tariff (off-peak 00:30–07:30). 180L Telford Hurricane Direct fitted with the bottom 3 kW immersion on the cheap-rate timer and the top 3 kW on a manual switch for boost. Cylinder fully heats during the night, free-rides through the day on the stored 180 litres. Cost: £1,745 fitted inc. VAT.

Converted Victorian flat, Hackney — 150L direct after ASHP retrofit

New air-source heat pump install required a direct cylinder as the customer chose immersion-only DHW (the ASHP feeds heating only). 150L Heatrae Sadia Megaflo Eco Plus Direct fitted in the same airing-cupboard footprint as the removed vented cylinder. Tied into the same Economy 7 wiring. Cost: £1,595 fitted inc. VAT.

1-bed studio, Wandsworth — failed immersion on existing direct cylinder

Tenant report: no hot water for 36 hours. Diagnosis: bottom immersion element open-circuit (resistance infinity), thermostat working. Replaced Incoloy 825 element + thermostat from van stock, recommissioned, witnessed T&P lift. Time on site: 90 minutes. Cost: £225 inc. VAT.

HMO 3-bed conversion, Tower Hamlets — 250L direct for 5 tenants

Licensed HMO with five rooms shared two bathrooms. Upgraded from a tired 150L cylinder to a 250L Kingspan Albion Ultrasteel Direct on twin Economy 7 immersions, weekly anti-legionella cycle scheduled, TMV2 outlets re-set to 43°C, written HMO compliance pack delivered. Cost: £2,195 fitted inc. VAT.

Direct unvented cylinder install this week?

Standard sizes (120–250L) fitted within 3–5 working days of survey. Same-day diagnostics on failed immersion elements, blown T&P or expansion vessel failure. Building Regulations G3 notification included on every install.

Call 0207 046 1363WhatsApp 07456 975436Book online

Areas covered across London

Direct unvented cylinder work carried out across every London borough. Heaviest call volumes from Camden, Islington, Hackney, Tower Hamlets, Wandsworth and Southwark where new-build all-electric blocks dominate the cylinder market.

CamdenWestminsterIslingtonHackneyTower HamletsSouthwarkLambethWandsworthHammersmith & FulhamKensington & ChelseaHaringeyGreenwich

Frequently asked questions

What is a direct unvented cylinder?
A direct unvented cylinder is a sealed, pressurised hot water store heated only by electric immersion heaters built directly into the tank — usually two 3 kW elements, one near the bottom and one near the top. There is no boiler coil and no primary heating circuit. The cylinder runs at mains pressure (typically 3.0–3.5 bar after the inlet pressure-reducing valve), so every hot tap and shower feels as strong as the cold. They are the standard choice for all-electric London flats and homes with no gas supply, properties with solar PV exporting to the immersion via a diverter, and many heat-pump retrofits where the customer keeps DHW independent of the heat pump.
What is the difference between a direct and indirect unvented cylinder?
Direct cylinders heat the water electrically via internal immersion elements — there is no boiler involvement. Indirect cylinders have a primary heating coil running through them, fed by a boiler, that heats the stored water by conduction. Indirect cylinders almost always also have one immersion fitted as electric backup. The choice is dictated by your heat source: no gas supply means direct; a working system boiler means indirect is faster and usually cheaper to run on gas. Full comparison and pricing on our hub page at /hot-water-cylinder-replacement-london.
How much does a direct unvented cylinder cost to install in London?
Supply and fit pricing in London for 2026 runs from £1,495 for a 120L install in a 1-bed flat up to £2,595 for a 300L install in a 4–5 bed home. The price includes the cylinder, twin 3 kW immersions, full G3 inlet group, expansion vessel, T&P, tundish, discharge pipework to outside, electrical safety check on the immersion circuits, commissioning, Benchmark logbook completion and Building Regulations Part G3 notification. A like-for-like swap is typically a 4–6 hour single-day job. A vented-to-direct conversion (removing the old loft tank + vented cylinder) adds £350–£500 to the figures above.
What size direct unvented cylinder do I need?
Rule of thumb: 35–45 litres of storage per person, plus 50 litres for any property with a daily bath user. A 1-bed flat for a single occupant is fine on 120L; a 2-bed flat for two people on 150L; a 2–3 bed flat for three on 180L; a 3-bed terrace for four on 210L. Direct cylinders need a slightly more generous sizing than indirect because the immersion recovery time is longer — you cannot rely on a quick gas reheat between showers. If everyone in the household showers in the same hour, size up one bracket.
How long does a direct unvented cylinder take to heat up?
A 3 kW immersion delivers around 10.3 megajoules per hour — enough to heat 150 litres from 10°C to 60°C in about 4 hours and 15 minutes. Running both immersions together (6 kW total) halves that to roughly 2 hours 10 minutes. In practice, properly sized cylinders on Economy 7 charge fully overnight off the cheap-rate bottom element and only need the top boost a handful of times a year. A 250L cylinder on twin 3 kW immersions full-on takes around 3 hours 30 minutes from cold.
Is a direct cylinder cheaper to run than an indirect cylinder?
Almost never on like-for-like volume — at 2026 UK average tariffs gas costs around 6.5p per kWh and peak-rate electricity around 28p per kWh, so a gas-fed indirect cylinder beats a peak-rate direct cylinder by roughly 4:1 on running cost. The exception is Economy 7 night rate (around 12p/kWh in London) on a 7-hour off-peak window — when most or all of the daily hot water is heated overnight, a direct cylinder gets within 25–35% of the running cost of an equivalent gas-fed indirect cylinder. Solar PV with an immersion diverter (Eddi / iBoost) tips the balance further by sending free PV surplus straight into the bottom element.
Do I need a G3 engineer to install a direct unvented cylinder?
Yes. Approved Document G3 of the Building Regulations applies to every unvented hot water vessel over 15 litres regardless of heat source. Direct cylinders are treated identically to indirect for compliance purposes — the engineer must hold a current G3 ticket (BPEC HWSS, City & Guilds 6189, or LCL Awards equivalent, renewed every 5 years), the work must be notified to Building Control directly or via a Competent Persons Scheme, and the Benchmark logbook must be completed on commissioning. A non-G3 install voids the 25-year manufacturer warranty and exposes the homeowner to enforcement under the Building Act 1984.
Can a direct unvented cylinder be paired with solar PV?
Yes, and it is one of the strongest use-cases for the direct format. A solar PV diverter (Myenergi Eddi, Marlec SolarIBoost, Wattson) modulates surplus PV power into the immersion element rather than exporting it to the grid for a few pence per unit. On a south-facing 4 kWp London array, this can put 1,500–2,500 kWh of free hot water into the cylinder per year — covering roughly 80–100% of a 2-person flat's hot water demand from April to September. We pair Eddi and StorPay diverters with Megaflo and Kingspan direct cylinders on most PV retrofits.
How often does a direct unvented cylinder need servicing?
Annually — same as any unvented cylinder. Every UK manufacturer (Heatrae Sadia, Telford, Kingspan, OSO, Gledhill, Range) requires an annual G3 service as a condition of the 25-year tank warranty. The service covers expansion vessel pre-charge, T&P witnessed lift, PRV outlet pressure, both immersion elements resistance-tested, both thermostats checked, anode inspection where fitted, discharge pipework integrity, and a refreshed Benchmark logbook entry. ERL's flat-rate G3 service on a single direct cylinder is £155 inc. VAT, with reminders for landlord portfolios under our PPM contract.
Why are immersion elements the most common failure on direct cylinders?
On a direct cylinder the immersion elements are doing the entire heating job — they cycle every day, often twice a day, year-round. In London's hard water belt (most of north and west London) the elements scale up over 5–8 years, the thermostat boss corrodes, and one element typically fails 7–10 years from new. Twin-element cylinders mean the cylinder keeps producing hot water on one element while you book the swap — a key reason we always specify twin immersions rather than single. Replacement runs £225 fitted from van stock, with the second element checked and the anode inspected on the same visit.
Will my old vented pipework work for a direct unvented?
Some of it. The hot distribution downstream of the old cylinder usually carries over straight. The cold feed changes completely — the old gravity-fed cold tank in the loft is removed, and a new mains cold feed runs into a G3 inlet group (stop-cock, strainer, pressure-reducing valve, single-check valve, expansion vessel, T&P). The vent and overflow pipes are decommissioned. The immersion circuits are normally pulled back to the consumer unit and re-terminated, because the existing single-immersion supply is rarely rated for the new twin-element load. Conversion adds £350–£500 to a like-for-like swap quote.
Can a direct cylinder be installed in a top-floor London flat?
Yes — direct cylinders are the most common choice in top-floor London flats because the airing cupboard rarely has a gas boiler nearby and the loft tank is being removed. The two checks are mains pressure (1.5 bar dynamic minimum at the cylinder inlet) and a viable discharge route to outside. In mansion blocks the discharge route is often the single hardest engineering question — we have run discharge pipes through fire-rated voids, into communal soil stacks with the freeholder's written consent, or laterally across a roof to the nearest external wall. Always covered at the survey, never priced after the fact.
Do direct cylinders work with heat pumps?
Yes, in two ways. If the heat pump only serves the central heating circuit, a direct cylinder gives entirely independent DHW heated by immersion — the simplest, most resilient setup. If the heat pump is sized for DHW too, an ASHP-specific indirect cylinder with a large low-temperature coil is normally a better fit because the heat pump runs at far lower kWh cost than the immersion. We size and quote either route — many London Victorian conversions end up with a direct cylinder for simplicity and the heating-only ASHP, especially when the existing electric supply is generous.
How long does a direct unvented cylinder last?
A properly serviced duplex stainless direct cylinder typically lasts 20–30 years on the tank itself, matching the 25-year warranty. The components inside have shorter lives: expansion vessels 7–12 years, T&P valves 10–15 years, PRV cartridges 8–12 years, immersion elements 7–10 years in London hard water. By the time the second round of components needs replacing — somewhere around year 18–22 — the smarter spend is usually a new cylinder with a fresh 25-year warranty rather than a third generation of parts. We will always give you both numbers on the same quote and let you decide.
What warranty do you provide on a new direct unvented install?
Cylinder warranty is whatever the manufacturer offers — most commonly 25 years on the tank (Megaflo, Telford, Kingspan, OSO, Gledhill, Range) plus 1–5 years on parts depending on brand. Workmanship and labour warranty from ERL is 12 months from install date, covering anything we fitted (G3 group, discharge pipework, immersion circuits, commissioning). The cylinder warranty is conditional on the cylinder being serviced annually by a G3 engineer with the Benchmark logbook updated each year — we send automatic reminders 11 months from the install date and discount the second-year service for direct customers.

Question not answered? Call 0207 046 1363 and talk to a G3 engineer directly — no call centre, no triage.

Service area

Direct Unvented Cylinder — Greater London Coverage

G3 qualified cylinder engineers based in central London with same-day cover across all 32 London boroughs and the City. Average response time inside Zone 2 is 60 minutes for emergencies, 3–5 working days for booked installs.

Direct unvented cylinder install or repair in London?

G3 qualified engineers across every London borough. Supply-and-fit from £1,495 inc. VAT, fixed-price quote on site, Building Regulations Part G3 notification filed and Compliance Certificate posted within 30 days. £5M public liability, fully insured.

0207 046 1363WhatsApp 07456 975436Book online

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