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 Registered
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 Registered
Trustpilot 4.9★
Vented and unvented hot water cylinders replaced by Gas Safe registered engineers across Lewisham — fixed price agreed before any work starts, no call-out charge.
SE4
SE6
SE8
SE13
SE23
🔒 No obligation. Fixed price confirmed before any work starts.
Most cylinders last 10–15 years. These are the warning signs we see most often across Lewisham.
Water pooling around the base, or discoloured water from the hot tap, usually means internal corrosion.
Running out of hot water quickly, or water that’s never quite hot enough, points to a failing cylinder.
Limescale build-up inside older cylinders can cause knocking sounds as water heats.
Poor pressure at the taps and shower, especially in older vented systems, often signals it’s time to upgrade.
The right cylinder depends on your existing system, mains pressure, and what you want to improve.
A straightforward like-for-like swap fed from a cold water storage tank in the loft — usually the simplest and most cost-effective option if your existing system works well.
Fed directly from the mains, giving strong, consistent pressure at every outlet without a loft tank. Requires Building Regulations G3 compliant installation, which we handle as standard.
From your call to a working shower, in four steps.
Tell us about your bathroom and the best time for you. Takes under 2 minutes.
We call you back within 15 minutes to confirm an appointment time.
Your engineer assesses your pipework and water pressure, and confirms the price before starting.
Cylinder fitted, tested and certified where required, with a 12-month workmanship guarantee.
Fixed prices agreed before we start — no call-out charge, no hidden extras.
Fixed Price
Most Popular
Fixed Price
After Survey
Honest advice on which cylinder suits your home, not just the most expensive option.
Reg. No. 123456 — for any wider heating work needed alongside your replacement.
The price agreed before we start is the price you pay.
All installations across Lewisham carry our written workmanship guarantee.
Based in and around South East London for fast scheduling.
Full insurance cover on every job.
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“Noticed our cylinder leaking one evening and had it replaced within a couple of days. Clear pricing from the start..”
“Upgraded from vented to unvented for better pressure. Explained the Building Regs side clearly, no surprises.”
“Old cylinder kept making banging noises. Replaced with a new unvented one, water pressure has never been better.”
A vented cylinder is fed from a cold water tank in the loft, while an unvented cylinder is fed directly from the mains, giving stronger and more consistent pressure. Unvented systems require Building Regulations G3 compliant installation, which we carry out as standard.
It can be urgent if your cylinder is actively leaking, but most replacements are planned rather than emergency callouts. Call us and we'll advise on the best timing for your situation.
A vented cylinder swap typically takes half a day, while an unvented replacement or upgrade usually takes a full day due to the additional certification requirements.
We cover the whole borough, including SE4, SE6, SE8, SE13, SE23 and SE26 — from Brockley and Deptford through to Catford, Hither Green, Forest Hill and Sydenham.
Fixed price agreed before we start, Gas Safe registered engineers, 12-month guarantee.
We also cover these neighbouring boroughs — same fixed prices, same-day availability.