RGI-registered installers · Sligo
Boiler Installation in Sligo: Gas, LPG and Oil
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.
Boiler installation in Sligo
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.
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 Energy (Miscellaneous Provisions) Act 2006. An unregistered installer cannot certify the work, your home insurance may be invalidated, and the job may not be accepted towards 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.
- RGI registration is a legal requirement for all gas and LPG work
- Every installer here is drawn from the RGI public register
- A gas safety certificate is issued to you on completion
How Long It Takes 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 Homes
Up to €12,500 for heat pump installation and €1,200 for solar water heating, through SEAI-registered contractors.
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.
from€2,200
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.
from€3,000
System Boiler
Works with a hot water cylinder. Better for larger homes with multiple bathrooms and high hot water demand, and suits solar water heating.
from€2,800
2026 prices
Boiler Installation Cost in Sligo 2026
Typical like-for-like ranges across Sligo. All figures include labour and VAT.
- Switching boiler type adds €400 to €800 for pipework changes
- A named boiler model on the quote protects your warranty
- An annual service keeps the manufacturer guarantee valid
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.
- Combi boiler €2,200–3,200
- System boiler €2,800–4,000
- Oil boiler €3,000–4,500
- Fit only (labour) €600–900
- Annual service €80–120
Indicative 2026 ranges. Always confirm with a written quote before work begins.
SEAI grants
SEAI Grants for Sligo Heating Upgrades
Grants are available for heat pump installation (up to €12,500) and solar water heating (€1,200). Standard gas combi replacements do not qualify directly, and the work must be carried out by an SEAI-registered contractor before any grant is 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 plumbersHiring
How to Hire a Boiler Installer in Sligo
Every gas boiler installer in Sligo must hold RGI registration. Here is how to verify and hire correctly.
Browse Registered Gas Installers in Sligo
Every engineer in the Sligo gas installer directory is RGI-registered, drawn from the public register. Browse the county, find installers near you and contact them directly. You can verify any registration number at rgi.ie for extra peace of mind.
Get Three Written Quotes for the Work
Quotes should specify the boiler model, labour cost, flue materials and any pipework changes. A quote without a named boiler model is incomplete, as the specification affects warranty terms, SEAI grant eligibility and long-term running costs.
Confirm SEAI Registration if Claiming a Grant
RGI and SEAI are two separate registers. RGI 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
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 a future sale.
Local coverage
Boiler Installation Across Sligo: Areas Covered
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.
Common questions
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.
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 may not be accepted towards 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 (up to €12,500) 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 Sligo home 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 rgi.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.
Browse Sligo gas installers