County Offaly · Census 2022 and gas meter data
Combi boiler installation in Offaly
Oil is the main fuel in Offaly: 42% of homes. What that means for a new combi, what installers publish, and one installer who covers Offaly.
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Last checked 1 November 2026: SEAI grant position and fuel prices, CSO gas data. Installers' published prices read 22 and 23 October 2026.
In Offaly, 42% of homes heat with oil and 7% with gas (Census 2022), so most combis are oil. 1,926 homes had a gas meter in 2024 (CSO). Published prices: a gas combi swap has a median of €2,600 across 12 installers, and an oil boiler €3,000.
Tell us about the job and one installer who covers your county rings you with a price. Nothing is booked until you say yes.
What's different about a combi in Offaly?
More Offaly homes heat with coal, peat or wood than in any other county: 35%, against 9% nationally (Census 2022). Another 42% heat with oil and 7% with gas. Where a stove or range has a back boiler feeding the radiators, ask the installer what happens to it before you price a combi.
Gas is in Tullamore and Clara: 25% and 16% of households heated with gas in the 2022 Census. Edenderry is 55% oil and Birr 49% (CSO, built-up areas file). Only 1,926 Offaly homes had a gas meter in 2024, but the median one used 7,868 kWh, above the State's 7,771 kWh (CSO, Networked Gas Consumption 2024).
Offaly in figures
Every figure for Offaly, against Ireland
| Offaly | Ireland | |
|---|---|---|
| Natural gas | 7% | 33% |
| Oil | 42% | 39% |
| Electricity | 8% | 12% |
| Coal, peat or wood | 35% | 9% |
| Homes with a gas meter, 2024 | 1,926 | 695,199 |
| Median gas use per metered home, 2024 | 7,868 kWh | 7,771 kWh |
| Detached houses | 58% | 41% |
| Built before 1980 | 42% | 42% |
| Built 2001 to 2010 | 28% | 25% |
| Built since 2011 | 6% | 8% |
Sources: CSO Census 2022, Small Area Population Statistics, county file, tables 6.1, 6.2 and 6.5 (households; year built where stated), read 29 October 2026; CSO table F2007A for detached houses; CSO, Networked Gas Consumption 2024, tables 5B and 6B, from Gas Networks Ireland meter data, read 30 October 2026.
Is it gas or oil in your Offaly town?
The county figures hide a split that matters for a combi: towns on the gas network and the countryside on oil. These are the 8 biggest towns in Offaly, with the share of households on each fuel in the 2022 Census.
| Town | Homes | Gas | Oil |
|---|---|---|---|
| Tullamore | 5,601 | 25% | 36% |
| Edenderry | 2,638 | 2% | 55% |
| Birr | 1,791 | 0% | 49% |
| Clara | 1,231 | 16% | 41% |
| Banagher | 720 | 0% | 40% |
| Ferbane | 518 | 1% | 43% |
| Daingean | 428 | 4% | 39% |
| Kilcormac | 392 | 0% | 39% |
Source: CSO Census 2022, Small Area Population Statistics, built-up areas, table 6.5 (households by central heating), and CSO table F1015 (population of towns), read 30 October 2026. Shares are of all households, including those that didn't say.
What changes the job in Offaly?
- Gas combi swap. Where there's a gas meter, a like-for-like swap is the usual job, fitted by an RGI. Median published price €2,600, middle half €2,199–€2,800. See every published price.
- Oil combi. 42% of Offaly homes heat with oil. An oil combi or a standard oil boiler is fitted by an OFTEC-registered technician, often outdoors in its own casing. Median published oil boiler price €3,000. See oil combi boilers.
- Boom-years boilers. 28% of Offaly homes were built between 2001 and 2010. Their first boilers are now 15 to 25 years old, and a like-for-like swap is the usual job.
- Big detached houses. 58% of Offaly homes are detached, against 41% nationally. With two or more bathrooms in use at once, a combi shares one flow of hot water; a system boiler with a cylinder may suit better. See combis for large houses.
What does a combi cost to run in Offaly?
The median Offaly home with a gas meter used 7,868 kWh of gas in 2024, against 7,771 kWh for the State (CSO, Networked Gas Consumption 2024, table 5B). At SEAI's unit price of 13.00c a kWh for gas in band D2, including VAT and before standing charges (SEAI, 1 July 2026), that's about €1,020 a year. That sum is ours.
Met Éireann's 1991 to 2020 averages give Tullamore about 2,046 heating degree days a year, about the same as the Irish average of 2,079 (Met Éireann 30-year averages; degree days are our calculation from the 1 km grid, base 15.5 °C). Size the boiler for the house and the bathrooms, not the county.
Oil is priced the same everywhere: kerosene was 12.60c a kWh on SEAI's 1 July 2026 schedule prices, against 13.00c for gas. See combi running costs for the cost per shower and per year.
How much does a new combi cost in Offaly?
We found no Offaly installer that publishes a price. Nationally, a like-for-like gas combi swap has a median published price of €2,600 across 12 installers, a conversion €3,400 and an oil boiler €3,000.
We found no installer based in Offaly that publishes a supplied-and-fitted price on its own website (checked 22 and 23 October 2026). The national figures are the benchmark: 35 installers' published prices, every one linked on the price page.
| Job | Median published price | Middle half | Installers |
|---|---|---|---|
| Combi boiler swap | €2,600 | €2,199–€2,800 | 12 |
| Conversion to a combi | €3,400 | €3,100–€4,000 | 3 |
| System or regular boiler | €2,500 | €2,199–€2,650 | 32 |
| Oil boiler | €3,000 | €2,590–€3,500 | 6 |
Most prices don't say whether VAT is included. Ask for a written price with VAT, the flue, the flush, the filter and the certificate.
Which parts of Offaly do we cover?
All of County Offaly, including Tullamore, Edenderry, Birr, Clara, Banagher and Ferbane. The six biggest towns had 34,846 people between them in 2022 (CSO Census 2022, table F1015). Put your town or Eircode in the form and we pass it to one installer who covers your county.
Nearby: combi boilers in Westmeath · combi boilers in Laois · combi boilers in Kildare · combi boilers in Tipperary · combi boilers in Galway · every county.
FAQ
Questions people ask
How much is a combi boiler installed in Offaly?
We found no Offaly installer that publishes a price. Nationally, a like-for-like gas combi swap has a median published price of €2,600 across 12 installers, a conversion €3,400 and an oil boiler €3,000.
Is there gas in Tullamore?
Yes. 25% of Tullamore households heated with gas in the 2022 Census, and 36% with oil. Edenderry and Birr are almost all oil. 1,926 Offaly homes had a gas meter in 2024 (CSO).
Do most homes in Offaly need an oil or a gas combi?
Oil, on the 2022 Census: 42% of Offaly homes heat with oil and 7% with gas. A meter box on an outside wall means gas; a tank in the garden means oil.
Is there a grant for a new combi boiler?
No. In SEAI's own words: "We do not give grants for new or replacement fossil fuel boilers, such as gas or oil" (SEAI, read 1 November 2026). You may get the €700 heating controls grant if your home was built and occupied before 2011 (SEAI), and with a combi SEAI requires an extra heating zone as part of that work. The €2,000 boiler scrappage grant only applies when a heat pump replaces the boiler.
Guides
Near Offaly
- Combi boilers in Westmeath10% of homes on gas, 50% on oil.
- Combi boilers in Laois25% of homes on gas, 43% on oil.
- Combi boilers in Kildare38% of homes on gas, 37% on oil.
- Combi boilers in Tipperary12% of homes on gas, 60% on oil.
- Combi boilers in Galway8% of homes on gas, 54% on oil.
- Oil combi boilersMedian oil boiler €3,000.
- Combi boiler pricesMedian combi swap €2,600.
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Where these numbers come from (9 public sources, checked 29 October 2026)
- CSO: cso.ie/en/releasesandpublications/ep/p-ngc/networked…
- CSO, built-up areas file: cso.ie/en/media/csoie/census/census2022/SAPS_2022_BU…
- CSO Census 2022, Small Area Population Statistics: cso.ie/en/census/census2022/census2022smallareapopul…
- CSO table F2007A: data.cso.ie/table/F2007A
- CSO table F1015: data.cso.ie/table/F1015
- SEAI, 1 July 2026: seai.ie/publications/Domestic-Fuel-Cost-Comparison.pdf
- Met Éireann 30-year averages: met.ie/climate/30-year-averages
- SEAI: seai.ie/grants/home-energy-grants/individual-grants/s…
- SEAI: seai.ie/grants/home-energy-grants/individual-grants/h…