RGI-registered installers · Sligo
Boiler Installation in Sligo: RGI Installers for Gas, LPG and Oil Homes
Find a registered installer for combi boiler installation, system boiler replacement or an oil boiler swap across Sligo. 2026 prices, SEAI grant guidance and RGI-registered installers from Sligo Town to Strandhill.
The law
Boiler Installation in Sligo: What the Law Requires
Boiler installation in Sligo must be carried out by an RGI-registered gas installer for any boiler running on natural gas or LPG, a legal requirement under the Gas Safety (Installation and Use) Regulations. An unregistered installer cannot certify the work, your home insurance may be invalidated, and the job cannot be included in a BER certificate.
The installers listed here cover the whole county, taking in Sligo town, Strandhill, Ballymote, Tubbercurry, Enniscrone, Collooney and Rosses Point. Every one is drawn from the RGI public register.
How Long Does Boiler Installation Take in Sligo?
A like-for-like combi swap takes one working day. Switching boiler type takes two days, while heat pumps take two to three.
SEAI Grants for Sligo Homeowners in 2026
Up to €6,500 for heat pump installation and €1,200 for solar water heating, through SEAI-registered contractors.
Local coverage
Boiler Installation Across Sligo: The Areas Covered
Sligo town has natural gas network access, making it the main hub for gas installer work in the county. However, the wider county, particularly rural Sligo and coastal areas such as Strandhill, Enniscrone and Rosses Point, relies on LPG or oil heating. Installers based in Sligo town tend to focus on natural gas boiler and appliance work, while those covering the broader county will encounter more LPG and mixed-fuel properties.
Sligo Town is the main urban centre with a range of housing from Victorian terrace to 1990s-2000s estate housing. The rural county has a scattered pattern of bungalows and farmhouses typical of the west of Ireland, with a significant proportion still on oil-fired systems and a growing number seeking SEAI-backed upgrades to heat pumps.
Sligo faces Atlantic weather with regular winter storms. Ben Bulben creates a local wind shadow effect on its south side, but the coast and the open south Sligo plain are fully exposed. Frost is regular but not extreme by inland standards.
Sligo Town has several well-established plumbing businesses. For the more dispersed rural areas, contractors typically travel from the town. Tobercurry and Ballymote have local coverage, and Enniscrone is within range of both Sligo and Ballina contractors.
Every area above is served by registered engineers in the Sligo gas installer directory.
The options
Choosing Between Gas, LPG and Oil in Sligo
Sligo town has natural gas network coverage. Rural Sligo including coastal communities, south Sligo and all areas away from the main town rely on LPG or oil.
Combi Boiler
Heats water on demand with no cylinder needed. Ideal for homes under 130 sq m and popular in Sligo Town and the larger towns on the gas network. Supply and fit.
Oil Boiler
A mainstay outside the gas-connected towns of Sligo. Modern condensing oil boilers are over 90% efficient. SEAI grants apply when replacing with a heat pump.
System Boiler
Works with a hot water cylinder. Better for larger homes with multiple bathrooms and high hot water demand. Suitable for solar water heating.
2026 prices
Boiler Installation Cost in Sligo 2026: Prices From Sligo Town to Strandhill
Typical like-for-like Sligo ranges. All figures include labour and VAT at 9%.
Combi boiler
€2,200–€3,200
Supply and fit, like-for-like replacement
System boiler
€2,800–€4,000
Supply and fit, includes cylinder if needed
Oil boiler
€3,000–€4,500
Supply and fit, tank inspection may be extra
Fit only
€600–€900
Labour only, customer supplies the boiler
Annual service
€80–€120
Recommended every 12 months
Sligo draws from Lough Gill and other local surface water sources. Water quality is generally good. The coastal areas of Strandhill and Enniscrone see elevated salt air exposure, which affects the longevity of boiler flue terminals and external metalwork.
SEAI grants
SEAI Grants for Sligo Heating Upgrades
Grants are available for heat pump installation (up to €6,500) and solar water heating (€1,200). Standard gas combi replacements do not qualify directly, 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 Sligo are listed at wallinsulationireland.ie.
See SEAI-registered plumbers →Hiring
How to Find a Registered Boiler Installer in Sligo
Every gas boiler installer in Sligo must be registered with the RGII. Here is how to verify and hire correctly.
Browse Registered Gas Installers in Sligo
Every engineer listed in the Sligo gas installer directory is RGII-registered. Browse the county, find engineers near you, and contact them directly. You can verify any registration number at rgii.ie for additional peace of mind.
Get Three Written Quotes for the Work
Quotes should specify the boiler model, labour cost, flue materials and any pipework changes required. A quote without a named boiler model is incomplete, since the specification affects warranty terms, SEAI grant eligibility and long-term running costs.
Confirm SEAI Registration if Claiming a Grant
RGII and SEAI are two separate registers. RGII registration is mandatory for all gas work in Ireland, while SEAI registration is required only for grant-eligible jobs. Your installer must be on both lists before any SEAI-funded work begins.
Request Your Gas Safety Certificate on Completion
Your installer must provide a gas safety certificate on the day the work is completed. Keep it with your home insurance documents and BER certificate, because without it the gas work is unverifiable and will affect your property’s resale.
Boiler Installation in Sligo: Common Questions
How much does boiler installation cost in Sligo in 2026?
A combi boiler supply and fit costs €2,200 to €3,200 in Sligo for a like-for-like replacement. A system boiler is €2,800 to €4,000, and an oil boiler €3,000 to €4,500. Switching boiler type adds €400 to €800 for pipework changes. Figures include labour and VAT at 9%.
Do I need an RGI-registered installer in Sligo?
Yes. All gas and LPG boiler installation in Sligo requires an RGI-registered gas installer by law. An unregistered installer cannot certify the work, your home insurance may be invalidated, and the installation cannot be included in a BER certificate.
How long does a boiler installation take in Sligo?
A like-for-like combi boiler replacement takes one working day. Switching boiler type takes two days and requires additional pipework. Heat pump installations take two to three days.
Is there an SEAI grant for a new boiler in Sligo?
A standard gas boiler swap does not qualify for a direct SEAI grant. Grants apply to heat pump installation (€6,500) and to insulation upgrades carried out at the same time. Sligo homeowners in homes built before 2011 are eligible to apply.
Can I get a gas boiler if my home in Sligo is not on the gas network?
Yes, in most cases. Homes in Sligo outside the natural gas network can run a combi or system boiler on LPG supplied from a tank, and the same RGI registration rules apply to LPG work as to natural gas. Your installer will size the tank and pipework to the property.
How do I find a registered boiler installer in Sligo?
Browse RGI-registered gas installers across Sligo on plumbersinireland.ie, drawn from the RGI public register, then request quotes directly. Always confirm current registration at rgii.ie before work begins.
Get Boiler Installation Quotes in Sligo
Boiler installation in Sligo, from combi swaps to oil replacements and heat pumps, matched to RGI-registered installers near you. Free, no obligation, reply within 24 hours.