Local plumbers · Laois
Immersion Heater Services in Laois: Elements, Dual Immersion and Timers
Find a plumber for immersion element replacement, a new cylinder immersion or a night-rate timer across Laois. 2026 prices, off-peak running-cost tips and local plumbers from Portlaoise to Stradbally.
How they work
Immersion Heaters in Laois: How They Work and When to Replace
An immersion heater is an electric element inside your hot water cylinder that heats the water directly, used across Laois as the main water heater or as backup when the boiler is off. The plumbing side, draining the cylinder, fitting the new element or thermostat and refilling, is done by a plumber, while the final electrical connection to a new unit should be made by a registered electrician on the Safe Electric (RECI) register. Elements fail when they burn out or fur up with scale, and a slow-heating tank usually points to a worn element or a drifting thermostat.
The plumbers listed here cover the whole county, taking in Portlaoise, Portarlington, Abbeyleix, Mountmellick, Mountrath, Rathdowney and Stradbally, so an element replacement or timer setup is never far away.
How Long Does Immersion Work Take in Laois?
An element or thermostat swap takes an hour or two once the cylinder is drained. A new immersion or a dual and timer upgrade is a half-day job.
Cut Laois Running Costs With Off-Peak Heating
Pairing an immersion with a timer lets it heat on cheaper night-rate electricity, filling the tank overnight for use the next day.
Local coverage
Immersion Heater Services 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
Elements, Dual Immersion and Timers 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.
Dual Immersion & Timer
A top element for a fast boost and a bottom element for a full tank, on a night-rate timer. The most cost-effective hot water setup for larger Laois homes off the gas grid.
Immersion Element Replacement
The job plumbers see most in rural Laois, where the immersion often does the heavy lifting. A tired element is drained, swapped and refilled. Supply and fit.
New Immersion Installation
Fitting an immersion to a cylinder that has none, or replacing an old unit and its thermostat in full. Ideal as backup water heating or a summer standalone. Supply and fit.
2026 prices
Immersion Heater Cost in Laois 2026: Prices From Portlaoise to Stradbally
Typical Laois ranges for immersion work. All figures include labour and VAT at 9%.
Immersion element replacement
€120–€250
Supply and fit, cylinder drained and refilled
New immersion installation
€200–€450
Supply and fit, new element and thermostat
Thermostat replacement
€80–€160
Swap only, restores accurate temperature control
Timer / off-peak wiring
€120–€250
Sets the immersion to heat on night-rate electricity
Dual immersion upgrade
€300–€550
Top and bottom elements for boost and full tank
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.
Running costs
Cut Laois Hot Water Costs With an Off-Peak Timer
Night-rate and smart tariffs price overnight electricity well below the day rate. Wire the immersion to a timer and the cylinder fills while units are cheapest, giving Laois homes a full tank for the morning. Pairing a dual immersion with a timer, the bottom element on overnight and the top for a quick daytime boost, is the most cost-effective hot water setup for most homes here.
Find a Laois plumber →Hiring
How to Find a Plumber for Immersion Work in Laois
The plumbing side of immersion work in Laois is done by a plumber, with the final electrical connection to a new unit made by a registered electrician. Here is how to hire correctly.
Browse Plumbers in Laois
Browse local plumbers in the Laois plumber directory. Find plumbers near you who handle immersion elements, thermostats and timer setups, and contact them directly. No fees and no sign-up to get in touch.
Get a Clear Quote for the Work
A good quote names the element and thermostat rating, the labour to drain and refill the cylinder, and whether a timer or fresh wiring is included. Ask whether the plumber arranges the electrical connection or whether you need to book an electrician separately.
Confirm the Final Electrical Connection
The plumbing is done by a plumber, but the final electrical connection to a new immersion should be made by a registered electrician on the Safe Electric (RECI) register. For a like-for-like element swap on existing wiring, most plumbers complete the job in one visit.
Check the Element and Thermostat Rating
In hard-water areas an Incoloy element resists scale far better than a standard copper one and lasts longer. Confirm the thermostat is set to 60 to 65 degrees, hot enough to kill bacteria without wasting electricity or scalding.
Immersion Heaters in Laois: Common Questions
How much does it cost to replace an immersion element in Laois in 2026?
An immersion element replacement costs €120 to €250 in Laois, including labour and VAT at 9%. The cylinder has to be drained and refilled, which is where most of the time goes. A thermostat swap on its own is €80 to €160, and a dual immersion upgrade €300 to €550.
Why does my immersion keep tripping or stop heating in Laois?
The usual causes are a burnt-out element, a failed thermostat, or limescale that makes the element overheat and trip the switch. A Laois plumber tests the element and thermostat, and a scaled or open-circuit element is replaced rather than repaired.
Is a dual immersion worth it for a Laois home?
For larger Laois homes, and anywhere the immersion does the main water heating, a dual immersion is well worth it. The top element gives a fast boost while the bottom element heats a full tank overnight on a timer, keeping running costs down through the colder months.
Can I fit a timer for night-rate electricity in Laois?
Yes. A timer set to a night-rate or smart tariff heats the cylinder overnight on cheaper units, giving Laois homes a full tank for the morning. Timer and off-peak wiring costs €120 to €250 and is one of the quickest ways to cut hot water running costs.
Do I need an electrician as well as a plumber in Laois?
For a like-for-like element or thermostat swap on existing wiring, a Laois plumber usually completes the job. For a brand-new immersion, new circuit or timer wiring, the final electrical connection should be made by a registered electrician on the Safe Electric (RECI) register.
How long does an immersion replacement take in Laois?
An element or thermostat swap takes an hour or two once the cylinder is drained. A full new immersion, or a dual immersion and timer upgrade, is a half-day job. Draining and refilling the cylinder is the slowest part of any immersion job.
Find a Plumber for Immersion Work in Laois
Immersion work in Laois, from element and thermostat swaps to dual immersion and timer setups, matched to local plumbers near you. Free, no obligation, reply within 24 hours.