Hot Water Cylinder Installation
We Offer Services in London and Hampshire, West Sussex, South West Surrey, East Wiltshire.
Hot Water Cylinder Installation | Local Gas London
Professional Hot Water Cylinder Installation Services – Fast, Reliable, and Affordable
Looking for a hot water cylinder installation? Local Gas London provides expert installation, replacement, and servicing for vented and unvented hot water cylinders. Our fully qualified Gas Safe engineers ensure your system is safe, efficient, and ready to use.
Fixed Price Hot Water Cylinder Installation
We offer transparent pricing with no hidden fees. The listed price includes labour and call-out charges, and we are not registered for VAT, so there is no VAT charge on our services.
Available Same-Day Service:
Most installations completed within 5 hours.
Engineers call ahead so you know exactly when they’ll arrive.
Exclusions (pay on-site if applicable):
Parking fees (hourly charge)
Congestion Charge
Ultra Low Emission Zone (ULEZ) charge
At Local Gas, we make it simple – great service at great prices!
What’s Included in Your Hot Water Cylinder Installation
When you book with Local Gas London, you get:
Professional installation by G3 registered Gas Safe engineers
Free disconnection of your old cylinder
12-month warranty covering installation
Full commissioning, documentation, and handover
Commissioning Certificate and Declaration of Safety for insurance purposes
Your hot water cylinder will be installed, fully functional, and ready for use.
Hot Water Storage Tank Overview
A hot water storage tank (also called a hot water cylinder, thermal storage tank, or heat storage unit) stores hot water for domestic use or space heating.
Key Features:
Can retain heat for days if heavily insulated
Can be heated by gas, oil, electric immersion heaters, or external heat sources (wood stove, district heating)
Water has a high specific heat capacity, is non-toxic, and almost free
Maintenance Considerations:
High mineral content water (hard water) can cause corrosion
Insulation reduces heat loss and energy costs
Annual servicing is recommended to maintain warranty and safety
Unvented Cylinder Installation
We offer a fixed price installation for unvented hot water cylinders, including professional installation following manufacturer’s instructions.
Simple 4-Step Booking Process:
Book Online: Choose your cylinder package, select a date, and pay a £350 deposit
Consultation Call: Our engineers call within 1 hour to discuss any questions
Reserve Your Date: Once confirmed, the installation day is blocked exclusively for you
Installation: Engineers arrive between 7:30–9:30 AM, install your cylinder, and complete commissioning
Inclusive: Labour and call-out (no VAT).
Not Inclusive: Parking fees, cylinder parts, and materials.
What We Do for Unvented Cylinders
Locate the most appropriate installation spot
Connect cold water inlet, hot water outlet, and primary flow/return pipework
Fit expansion vessel and thermostats in compliance with G3 regulations
Install zone valves, relief valves, and immersion heater
Complete commissioning and provide handover with documentation
Tip: Annual servicing is recommended to maintain warranty and ensure safety.
Vented Hot Water Cylinder (Indirect) Installation
Traditional vented hot water systems use a cold water tank in the loft and a hot water cylinder in the airing cupboard. These are common in older UK properties.
Cold water from the loft tank enters the cylinder at the bottom
Heated water rises to the top and is delivered to your taps
Some systems require a pump for low-pressure supply
Indirect heating via central heating boiler is standard
Fixed Price Installation: Labour and call-out included; parts/materials extra.
Installation Steps:
Book Online & Pay Deposit
Consultation Call
Pick & Reserve Installation Day
Installation by Gas Safe Engineers
Cylinder Replacement Process:
Isolate and drain old cylinder
Disconnect plumbing and electrical connections
Remove old cylinder and prepare the base
Install new cylinder and connect pipework
Reinstall immersion heater, refill cylinder, and check for leaks
Commission system and handover
Annual servicing is recommended for safety, warranty, and efficiency.
Why Choose Local Gas?
Fast same-day installation
Qualified Gas Safe & G3 engineers
Transparent fixed pricing with no hidden fees
Comprehensive warranty and safety certification
Friendly, reliable service from start to finish