Local plumbers · Laois
Hot Water Cylinders in Laois: Vented, Twin-Coil and Mains-Pressure
Find a plumber for cylinder replacement, a twin-coil solar and heat-pump cylinder or a mains-pressure upgrade across Laois. 2026 prices, correct sizing and local plumbers from Portlaoise to Stradbally.
The choice
Hot Water Cylinders in Laois: Vented vs Unvented
The right cylinder for your Laois home comes down to how it is plumbed. A vented copper cylinder is fed by gravity from a tank in the attic and is the traditional Irish setup. An unvented cylinder runs at mains pressure for stronger showers with no loft tank, but it stores water under pressure and needs a competent installer with the correct discharge pipe and safety controls.
The plumbers listed here cover the whole county, taking in Portlaoise, Portarlington, Abbeyleix, Mountmellick, Mountrath, Rathdowney and Stradbally. Sizing, mains pressure and safety all shape the right choice for your home.
How Long Does a Cylinder Replacement Take in Laois?
A like-for-like vented swap takes a few hours to half a day. An unvented conversion or a relocation takes a full working day.
SEAI Grants for Laois Homeowners in 2026
Up to €1,200 for solar water heating and €6,500 for a heat pump, both of which need a compatible twin-coil cylinder.
Local coverage
Hot Water Cylinders Across Laois: The Areas Covered
Laois is an inland midlands county centred on Portlaoise, which serves as both the county town and a significant regional hub for the midlands. The natural gas network covers Portlaoise and extends to some other towns in the county. Rural Laois, which is largely agricultural, relies on oil and LPG for heating. Portlaoise's growing population and active residential development means consistent demand for gas boiler installation and service work.
Laois has an inland, largely rural character with market towns as service hubs. Portlaoise has significant recent growth due to its position on the M7 Dublin-Cork motorway corridor. Portarlington has expanded as a Midlands commuter town. The rural county has a high proportion of older farmhouses and bungalows with oil-fired systems, many of which qualify for SEAI upgrade support.
Laois sits in the Irish Midlands with no coastal moderating influence. Cold temperatures are common in winter, with some of the most persistent frost periods in Leinster recorded in this area. The Slieve Bloom Mountains in the north-west of the county can receive significant snowfall in winter.
Portlaoise has a solid local plumbing trade serving both the town and much of the county. Portarlington and Mountmellick have local coverage. Rural south Laois around Abbeyleix and Rathdowney is typically served by travelling contractors from Portlaoise or Kilkenny.
Every area above is served by local plumbers in the Laois plumber directory.
The options
Vented, Twin-Coil or Mains-Pressure for Laois Homes
Portlaoise has natural gas network coverage, as does Portarlington. Rural Laois and smaller towns including Abbeyleix, Mountmellick and Rathdowney rely primarily on oil or LPG.
Vented Cylinder
The default in older Laois cottages and farmhouses, fed by gravity from a tank in the attic. Reliable and the cheapest cylinder to replace like for like. Supply and fit.
Heat-Pump / Solar Cylinder
The go-to upgrade across rural Laois, where solar thermal and heat pumps are common. A twin-coil cylinder stores heat from the renewable source and a boiler or immersion backup.
Unvented (Mains-Pressure) Cylinder
Runs straight off the mains for strong, balanced pressure at every tap and shower, with no attic tank. Stores water under pressure, so it needs a competent installer.
2026 prices
Hot Water Cylinder Cost in Laois 2026: Portlaoise to Stradbally
Typical like-for-like Laois ranges. All figures include labour and VAT at 9%.
Cylinder replacement
€600–€1,100
Like-for-like vented copper cylinder, supply and fit
Unvented mains-pressure install
€1,200–€2,200
Mains-pressure cylinder with safety controls
Upsizing or relocation
€900–€1,600
Larger cylinder or a move with new pipework
Immersion element and thermostat
€150–€300
Replacement element and stat, supply and fit
Annual check
€70–€110
Recommended every 12 months for unvented units
Laois is served from the Emo Court wellfield and other groundwater sources. Water hardness varies by area; some parts of the county are on moderately hard limestone aquifer water, making scale inhibition in boilers a worthwhile investment.
SEAI grants
SEAI Grants for Laois Water Heating Upgrades
Grants are available for solar water heating (up to €1,200) and heat pump installation (up to €6,500). Both need a compatible twin-coil cylinder, so a cylinder upgrade is often the first step, and work must be carried out by an SEAI-registered contractor before any grant can be claimed. A fabric-first upgrade makes the biggest difference to running costs, and SEAI-registered insulation contractors covering Laois are listed at wallinsulationireland.ie.
See SEAI-registered plumbers →Hiring
How to Find a Plumber for a Cylinder in Laois
A cylinder swap is standard plumbing work, but an unvented unit needs a competent installer. Here is how to hire correctly in Laois.
Browse Plumbers in Laois
Browse local plumbers in the Laois plumber directory, find someone near you, and contact them directly. For an unvented cylinder, check that they hold the relevant competency, as mains-pressure units carry discharge and safety requirements.
Get Three Written Quotes for the Work
Quotes should name the cylinder make, its capacity in litres, whether it is single or twin coil, and any pipework, controls or discharge work needed. A quote without a stated capacity is incomplete, since sizing drives both comfort and the price you pay.
Confirm SEAI Registration if Claiming a Grant
A compatible twin-coil cylinder is part of any solar water heating or heat pump job. Where a grant is involved, the wider works must be carried out by an SEAI-registered contractor, so confirm registration before the cylinder is ordered.
Get Your Commissioning Paperwork and Warranty
An unvented cylinder must be commissioned with its discharge pipe, expansion vessel and safety valves set correctly. Keep the commissioning record and register the warranty, as most manufacturers require an annual check to keep cover in place.
Hot Water Cylinders in Laois: Common Questions
How much does it cost to replace a hot water cylinder in Laois in 2026?
A like-for-like vented copper cylinder replacement costs €600 to €1,100 in Laois, including labour and VAT at 9%. A full unvented mains-pressure install runs €1,200 to €2,200, upsizing or relocation is €900 to €1,600, and an immersion element and thermostat is €150 to €300.
Vented or unvented cylinder: which is better in Laois?
A vented cylinder is cheaper and simpler where a loft tank already feeds the house, but pressure depends on the height of that tank. An unvented cylinder gives mains pressure at every outlet with no attic tank, at a higher price and with stricter safety requirements. Laois homes with power showers and multiple bathrooms usually benefit most from unvented.
What size hot water cylinder do I need for my Laois home?
Sizing follows the number of bathrooms and occupants rather than the county. A one or two-bathroom Laois family home is typically well served by a 150 to 210 litre cylinder, while larger homes with several bathrooms move to 250 to 300 litres. Your plumber sizes the cylinder to peak demand so you are not left short or heating water you never use.
What are the benefits of a mains-pressure unvented cylinder in Laois?
An unvented cylinder delivers strong, balanced hot and cold pressure at every tap and shower in your Laois home, removes the need for an attic tank, frees up loft space and cuts the risk of tank freezing or contamination. The trade-off is a higher fit cost and a required annual safety check.
Is there enough mains pressure for an unvented cylinder in Laois?
Most homes on the public mains in Laois have enough flow for an unvented cylinder, but rural properties on a private well or a shared group scheme may not. Your plumber checks the incoming flow and pressure first, and where the mains is weak a vented cylinder or a pumped system is the better fit.
How do I find a plumber for a cylinder in Laois?
Browse local plumbers across Laois on plumbersinireland.ie and request quotes directly. For an unvented cylinder, confirm the plumber holds the relevant competency, as mains-pressure units carry discharge and safety requirements that a standard vented swap does not.
Get Hot Water Cylinder Quotes in Laois
Cylinder work in Laois, from vented swaps to unvented mains-pressure and twin-coil upgrades, matched to local plumbers near you. Free, no obligation, reply within 24 hours.