Hot water cylinders in Dublin & Meath
Standard cylinders supplied, installed and replaced — copper or stainless steel, fully insulated and sized to suit the house.
A fully insulated cylinder pays for itself
A fully insulated hot water cylinder is essential for both energy efficiency and comfort.
Less heat loss
A well-insulated cylinder keeps your water hotter for longer.
Lower energy bills
Less heat loss means less work for your boiler.
Faster hot water
Because the heat is retained, hot water is readily available.
Eco-friendly
Improved efficiency means less energy usage.
How a standard cylinder works
This is the arrangement in most Irish homes. A cold water tank sits in the attic and feeds the cylinder in the hot press, and gravity does the rest — the weight of the water above gives you the pressure at the tap.
Your boiler heats the water through a coil inside the cylinder, and an immersion heater is there as a backup. It is simple, it is reliable, and there is very little to go wrong.
The one limitation is pressure. It depends entirely on how far the water falls from the attic, which is why the shower in an upstairs bathroom is often weaker than the one downstairs — there is less height above it.
Want mains pressure instead?
If the weak shower is the thing that is bothering you, the answer is a different kind of cylinder entirely — an unvented, pressurised one, fed from the mains with no attic tank at all. See our guide to unvented cylinders.
Choosing the right cylinder
Copper
The traditional choice in Irish homes, and still a perfectly sound one for a standard vented system. Copper conducts heat well, it is easy to work with, and it is fully recyclable at the end of its life.
- Cheaper to buy
- Proven in vented systems
- Excellent heat transfer
- Softer metal, so less suited to pressure
- Can corrode over time in hard water areas
Stainless steel ⭐
The better long-term buy for most homes, and the only realistic choice if you are going pressurised. It is a stronger metal, so the walls can be thinner — which means more water stored in the same footprint.
- Longer life, often with a longer warranty
- Handles pressure — essential for unvented
- Thinner walls, so more capacity for the same space
- Far more resistant to corrosion
- Costs more up front
So which should you pick?
If you are replacing like for like on a standard vented system and watching the budget, copper will serve you well and has done in Irish houses for decades.
For anything else — and certainly for a pressurised system — stainless steel is the one we would fit. The extra cost is modest against the life of the cylinder, and you are far less likely to be doing this again in ten years.
Our recommendation
We recommend choosing a fully insulated stainless steel cylinder for most homes. While the initial cost is a bit higher, the durability, efficiency, and performance more than pay off.
Signs your hot water cylinder needs replacing
Most people call it the hot water tank, and it sits in the hot press quietly doing its job until it does not. These are the signs worth acting on:
Cylinders tend to be out of sight in a hot press, so problems often go unnoticed until something goes badly wrong. It is worth replacing yours if you notice any of the following:
- The hot water runs out far quicker than it used to
- Water around the base of the cylinder, or signs of past leaks
- Rusty or discoloured hot water
- The hot press is noticeably warm — heat escaping means money escaping
- The cylinder is old, thinly insulated, or wrapped in a loose lagging jacket
A leaking cylinder is worth acting on quickly. They rarely fail gently, and a burst cylinder in a hot press upstairs causes an enormous amount of damage.
Your immersion
Every cylinder has an immersion heater as a backup for heating water without the boiler running — useful in summer, or if the boiler is out of action. If yours trips, takes forever, or has stopped working altogether, it is usually the element or the thermostat rather than the whole cylinder.
Worth knowing: an immersion is an expensive way to heat a full tank of water compared with the boiler. If you are relying on it day to day, something else is wrong and it is worth a look.
Getting the size right
Size matters more than most people expect. Too small and you run out of hot water halfway through the second shower; too large and you pay to heat water nobody uses.
The right size depends on how many people live in the house, how many bathrooms you have, and when everyone tends to use hot water. We will look at your setup and recommend a size that suits the way your household actually lives, rather than just fitting whatever came out.
What the installation involves
We handle the whole job from start to finish — draining down the system, removing the old cylinder, fitting and insulating the new one, reconnecting the controls and testing everything before we leave. Most straightforward cylinder swaps are completed in a day.
Replacing your boiler at the same time?
If you are having a new boiler fitted, it is usually the sensible time to replace an ageing cylinder too — the system is already drained down, so you save on labour doing both together.
Need a new hot water cylinder?
We supply and install both copper and stainless steel cylinders, fully insulated. Call us for a price.