Hot Water Cylinder Services in County Sligo

Losing your hot water supply is a deeply inconvenient problem that affects every part of daily life - no showers, no baths, no washing up, no clean laundry. For many homes across County Sligo, the hot water cylinder is the unsung hero of the household, quietly storing and delivering hot water around the clock. When it fails, you notice it immediately.

Whether your hot water has stopped completely, the water is not getting hot enough, the immersion heater has packed in, or the cylinder itself is leaking, our qualified plumbers diagnose and repair hot water cylinder problems across County Sligo. If your cylinder is beyond repair, we supply and install quality replacements including modern unvented mains-pressure cylinders that deliver significantly better performance.

What We Offer

Our hot water cylinder service covers the full range of repairs, replacements, and upgrades:

• Cylinder repair - Leaking connections, faulty thermostats, and temperature control issues diagnosed and fixed.
• Cylinder replacement - When the cylinder itself has failed (typically due to internal corrosion), we remove the old unit and install a new one. We work with copper, stainless steel, and modern insulated cylinders.
• Immersion heater repair and replacement - The immersion heater is an electric element fitted into the cylinder that heats water independently of the boiler. When it fails, we replace the element and thermostat.
• Thermostat replacement - If the water is too hot, not hot enough, or fluctuating wildly, a faulty thermostat is often the cause. We replace cylinder thermostats and immersion thermostats.
• Unvented cylinder installation - An upgrade from a traditional gravity-fed system to a mains-pressure unvented cylinder. This eliminates the need for an attic tank and delivers much better water pressure throughout the house.
• Expansion vessel and safety valve servicing - Unvented cylinders have safety devices that require periodic inspection and testing. We service these as part of our hot water cylinder maintenance.

Understanding Your Hot Water System

Most Sligo homes have one of two main types of hot water system, and knowing which you have helps you understand the likely cause when problems arise:

Vented (gravity-fed) systems are the most common in older and mid-age Sligo properties. A cold water storage tank in the attic feeds the hot water cylinder by gravity. The boiler heats the water in the cylinder via a coil, and the immersion heater provides a backup or supplementary heat source. These systems are reliable but deliver relatively low water pressure because they rely on the height of the attic tank.

Unvented (mains-pressure) systems are increasingly found in newer Sligo homes and renovations. The cylinder is fed directly from the mains water supply at much higher pressure. There is no attic tank needed. The result is powerful hot water at every tap and shower in the house. However, unvented systems operate at higher pressures and temperatures, so they must be installed and maintained by a qualified plumber with the appropriate certification.

Some newer homes in Sligo use combi boilers, which heat water on demand and do not have a cylinder at all. If you have a combi boiler and are experiencing hot water problems, our boiler repair service can help. For homeowners with traditional cylinders wondering whether it is time for a replacement, our hot water cylinder guide for Irish homeowners covers repair versus replacement decisions.

When to Call a Professional

Hot water cylinder problems should always be dealt with by a qualified plumber. Here are the situations where you need professional help:

• No hot water at all - Whether the boiler is running or not, if you have no hot water it needs investigating. The fault could be in the cylinder, the immersion, the thermostat, a valve, or the boiler itself.
• Water not hot enough - If the water is lukewarm rather than properly hot, the thermostat may be faulty, the immersion element may have partially failed, or there could be a circulation problem.
• Water too hot - Scalding hot water from the taps is a safety hazard, particularly in homes with children or elderly residents. A stuck thermostat or a faulty temperature and pressure relief valve needs immediate attention.
• Leaking cylinder - Water dripping or pooling around the base of the cylinder usually means the cylinder body has corroded through and needs replacing. Do not delay, as a small leak can become a major flood.
• Immersion heater not working - If the immersion does not heat the water when the switch is on, the element may have burned out, the thermostat may have tripped, or there could be an electrical fault.
• Noises from the cylinder - Rumbling, hissing, or banging from the hot water cylinder can indicate limescale build-up on the immersion element or a pressure issue.

Upgrading to an Unvented Cylinder

If you are tired of weak showers and slow-filling baths, upgrading from a traditional vented cylinder to a mains-pressure unvented cylinder can be life-changing. The benefits include:

• Powerful hot water pressure at every tap, shower, and bath in the house
• No attic tank required - freeing up loft space and eliminating the risk of tank leaks and frost damage
• Better shower performance without the need for a booster pump
• Consistent pressure even when multiple taps are used simultaneously
• Reduced risk of contamination because there is no open tank in the attic

An unvented cylinder installation typically takes one day and involves removing the old cylinder, fitting the new unit, connecting the mains supply, and installing the required safety devices. Our plumbers hold the G3 unvented hot water certification required by Irish regulations to carry out this work.

Restore Your Hot Water Supply

Do not put up with unreliable hot water. Whether you need a quick immersion heater repair or a full cylinder replacement, call us on 087 341 0745. We serve all of County Sligo with transparent pricing and carry common parts on the van for fast repairs. Let us get your hot water flowing properly again.