Best Hot Water Cylinder Replacement & Installation Service in Dublin

Looking for the best hot water cylinder replacement or installation service in Dublin? At Swords Plumbing & Gas, we help homeowners restore reliable hot water, improve energy efficiency, and enjoy peace of mind with high-quality hot water cylinders for your gas and oil boiler in Dublin homes.
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Swords Plumbing & Gas: Established in 2004

Dublin’s Hot Water Cylinder & Heating Service Specialists

At Swords Plumbing & Gas, we have been helping Dublin homeowners since 2004 with professional hot water cylinder services. Our certified technicians install, repair and maintain water cylinders for homes using gas and oil heating systems.

Whether you are replacing your hot water cylinder due to leaks, poor performance or rising energy bills, our team provides practical solutions tailored to your home. We never subcontract our work and every installation is completed by our own experienced engineers.

What Is a Hot Water Cylinder and How It Works?

An oil boiler is a heating appliance that uses heating oil stored in an external tank to produce heat and hot water for your home. When you turn on your heating system, the burner ignites the oil and transfers heat through a heat exchanger.

The heated water then travels through your radiators and hot water system. Modern condensing boiler technology helps improve efficiency, reduce fuel usage and deliver reliable central heating throughout your Dublin home.

Hot Water Cylinder Solutions We Provide in Dublin for Gas & Oil Boiler Homes

Hot Water Cylinder Replacement

If your existing hot water cylinder is leaking, corroded or struggling to provide enough hot water for showers, we can replace it with a modern, high quality stainless steel hot water cylinder. Our team will assess your household’s hot water usage and recommend the correct size and type.

Hot Water Cylinder Installation

Building a new home or upgrading your heating system? We install hot water cylinders for domestic hot water systems connected to gas boilers, oil boilers, heat pumps and renewable heating systems.

Hot Water Cylinder Repairs & Maintenance

Not every issue requires a replacement. Our team carries out hot water cylinder repairs to restore performance and extend the lifespan of your system. We inspect components carefully and recommend the most cost-effective solution.

Leak Repairs

Water stains, corrosion or damp patches around your hot water storage cylinder can indicate a leak. We quickly identify the cause and carry out repairs before further damage occurs.

Valve Replacements

Faulty valves can affect water pressure, efficiency and safety. We replace worn or damaged valves and carry out Annex E safety checks where required.

Immersion Replacements

A faulty immersion heater can leave you without hot water. Our engineers replace immersion heaters and ensure your hot water system operates correctly and efficiently.

Signs you need a new Hot Water Cylinder:

You have no hot water – You have had the heating on for hours on end or even the immersion and yet you still have no hot water.

Not enough hot water – The hot water you have stored seems to run out after one shower leaving you with a cold or Lukewarm shower.

Leaking – The existing hot water cylinder has water or limescale stains appearing, bottom of the tank is actively leaking

Discoloured water – When you run the hot water tap you get discoloured brown water.

Upgrading – You have had your cylinder for quite some time and would like to upgrade it to a stainless steel low heat loss cylinder

Benefits of Stainless-Steel Cylinders:

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10 Year Warranty

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Manufactured with Duplex stainless steel

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Fitted with incoloy immersion

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Water heats faster due to inbuilt rapid recovery coil

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Water stays hotter for longer compared to traditional cylinders

Repairs

Replacing your Hot Water Cylinder

At Swords Plumbing & Gas we only fit the best quality materials, in the case of Hot Water Cylinders that is Stainless Steel Cylinders. As every property is different and every person has different requirements it is best to call us if you are considering replacing or upgrading your hot water cylinder system so we can meet your specifications.

What size cylinder do I need:

Hot water cylinders come in various sizes in relation to their litre capacity and it is important to have it sized correctly. Choosing a cylinder that is too small water will result in running out of hot water during showers, while oversizing the hot water cylinder will result in wasted energy heating surplus hot water.

30” x 18”
=
96 litres

36” x 18”
=
117 litres

42” x 18”
=
140 litres

48” x 18”
=
162 litres

When choosing a hot water cylinder for your household some important factors to consider are:

How many bathrooms are in the house?

How many showers and baths are in the house?

What Type of showers: electric showers, pumped showers? A pumped shower is capable of using 18 litres of hot water per minute and this can drain your hot water cylinder quite quickly if you enjoy long showering experiences?

What are the number of occupant in the house that will increase my hot water usage

What is my Heat source: gas, oil, solar, solid fuel?

Your Local Hot Water Cylinder Specialists

Why Dublin Homeowners Trust Swords Plumbing & Gas

Established in Dublin Since 2004

We have been serving homeowners across Dublin since 2004. Our team understands local homes, local heating systems, and the challenges that come with older water cylinders and oil boilers in Dublin properties.

RGI Registered & Certified Engineers

Our certified technicians are RGI Registered Gas Installers and work to the highest industry standards. We also carry out Annex E Safety Checks to ensure your hot water system operates safely.

No Subcontractors Ever

We do not subcontract our work out. Every hot water cylinder installation, repair and maintenance visit is completed by our own experienced engineers.

Fully Stocked Vans For Faster Repairs

Our vans arrive fully stocked with various parts and components. This helps our team complete many hot water cylinder repairs during the first visit where possible.

How it Works

From Free Quote To Installation – Our Booking Process

Free Home Assessment & Quote

We start by understanding your home, your hot water usage and your existing heating system. Then we provide a free quote now with clear recommendations.

Choosing The Right Cylinder

Our team will recommend suitable types of hot water cylinders based on your household size, water pressure, domestic hot water demand and heating source.

Professional Installation & Testing

Once approved, our engineers install your new hot water cylinder, test the complete hot water system and ensure everything operates safely and efficiently.

Local Heating Services Experts Covering Dublin And Surrounding Areas

Based at 14 Berwick Court, Swords Manor, Swords, Co. Dublin, K67 W8P5, we provide hot water cylinder services throughout Dublin City and surrounding areas.
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Malahide

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Portmarnock

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Donabate

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Rush

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Lusk

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Skerries

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Balbriggan

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Kinsealy

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Ballyboughal

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Santry

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Coolock

Get A Free Hot Water Cylinder Quote Today!

If you are dealing with no hot water, a leaking hot water tank, rising heating bills or an ageing system, our team is ready to help. At Swords Plumbing & Gas, we provide professional hot water cylinder replacement, installation and maintenance services throughout Dublin.

As RGI Registered Gas Installers and certified technicians, we focus on long-term solutions, not temporary fixes. We offer free quotes, high quality products, strong warranties and honest advice. Contact our team today and let us help restore reliable hot water to your home.

Contact our team today for your free quote now.

FAQs

How Does a Hot Water Cylinder Work?
A hot water cylinder stores heated water from your boiler or immersion heater, keeping domestic hot water ready whenever needed.
How Long Should Hot Water Stay Hot in a Cylinder?
A modern insulated cylinder should keep hot water warm for many hours. Swords Plumbing & Gas recommends energy-efficient models.
How Many Litres Are in a Hot Water Cylinder?
Hot water cylinders typically range from 90 to 300 litres. Our team helps choose the correct size.
How Do You Size a Hot Water Cylinder?
Cylinder sizing depends on occupants, bathrooms, showers and heating source. Swords Plumbing & Gas provides professional recommendations.
Do I Need a Hot Water Cylinder?
You may need a cylinder if your home uses stored hot water rather than an on-demand heating system.
Why Does My Hot Water Cylinder Have No Hot Water?
No hot water may result from boiler faults, immersion issues or cylinder problems. Our engineers can diagnose it.
Why Is My Hot Water Cylinder Not Getting Hot?
A faulty immersion heater, thermostat, valve or heating system connection may prevent your cylinder from heating properly.
Why Is My Hot Water Cylinder Leaking From the Immersion?
A leaking immersion heater may indicate a failed seal or component. Swords Plumbing & Gas can inspect it.
What Causes Air in a Hot Water Cylinder?
Air can enter through plumbing faults, maintenance work or system issues, affecting water flow and performance.
What Is the Difference Between Vented and Unvented Hot Water Cylinders?
Vented cylinders use gravity-fed systems, while unvented cylinders operate under pressure and provide stronger water flow.