Who delivers to Castlebar
Corrib Oil
Connacht
- Min order
- 500L
- Lead time
- 2–3 days
- Coverage
- All of Connacht
- Est. price
- €1.09/litre
Mayo Fuels
Castlebar, Co. Mayo
- Min order
- 500L
- Lead time
- 1–2 days
- Coverage
- Castlebar, Westport, Claremorris, Ballinrobe
- Est. price
- €1.10/litre
Connacht Energy
Connacht
- Min order
- 500L
- Lead time
- 2–4 days
- Coverage
- Mayo, Galway, Roscommon
- Est. price
- €1.11/litre
Prices are estimates updated monthly. Always confirm today's price when requesting a quote.
Order cost calculator
Estimate your order cost before calling a supplier.
Estimated total
€817.50
Litres ordered
750L
Tank after
100%
💡 You could stretch to 900L if your tank allows — a larger order often means a lower price per litre.
Live Brent crude oil price
Weekly spot price in USD per barrel — a leading indicator for your delivered heating oil price.
Current
$114.43
USD/bbl
1-month change
+2.7%
1-year change
+68.9%
Seasonal price pattern
Typical relative price levels across the year — based on historical demand trends.
Aug–Sep
Best time to order — demand at its lowest, prices typically at their cheapest.
Oct–Nov
Order before November if you're below half — prices climb fast as winter demand kicks in.
Dec–Feb
Peak pricing season. Avoid running low — emergency deliveries cost significantly more.
Order size guide
500L
The minimum
Most Connacht suppliers require a 500-litre minimum. This is the floor — useful if you're topping up or on a budget, but you'll pay the highest price per litre.
900L
The sweet spot
A 900-litre order typically unlocks the best per-litre rate. It sees most households through a full winter season without needing a second delivery.
Never below 10%
Rule of thumb
Running below 10% risks sludge from the bottom of the tank being drawn into your boiler. Order before you reach a quarter tank.
Grants & schemes for Mayo homeowners
SEAI offers government-backed grants for reducing your reliance on heating oil.
Boiler Upgrade Scheme
Replace your oil boiler with a heat pump and receive an SEAI grant of up to €6,500. Most Connacht homes with a BER of C or above are eligible.
SEAI heat pump grants →Home Energy Upgrade Loan
A low-interest government-backed loan for home upgrades including insulation, windows, and heating system improvements. Available through participating banks.
SEAI upgrade loan →Warmer Homes Scheme
Free energy upgrades for homeowners receiving certain social welfare payments. Upgrades typically include insulation and heating controls.
Warmer Homes details →Solar PV Grant
Reduce electricity bills with a rooftop solar panel system. SEAI grants of up to €2,400 available. Pairs well with a heat pump to replace oil heating entirely.
Solar installers in Mayo →Tank & boiler maintenance
A well-maintained system burns less oil and costs less to run.
Annual boiler service
Service your boiler every 12 months. A clean, well-tuned boiler runs 10–15% more efficiently — which directly reduces your annual oil consumption and spend.
Tank inspection
Check your oil tank annually for rust, leaks, and bund condition. A leaking tank is both a financial loss and an environmental liability under Irish law.
Bleed radiators
If radiators are cold at the top and warm at the bottom, trapped air is reducing their efficiency. Bleed them at the start of each heating season.
Thermostatic controls
Fitting a programmable thermostat and thermostatic radiator valves can cut your heating bill by up to 20%. SEAI grants cover the cost of controls upgrades.
Common questions
- How often should I order heating oil in Castlebar?
- Most households in Castlebar order once or twice per year. The typical approach is to fill up in late summer (July–September) when prices are lowest, then top up in early spring if needed. Ordering a full tank (around 900 litres) once per season is cheaper per litre than multiple smaller orders. Avoid letting your tank drop below 10% — running out risks drawing sediment into your boiler.
- What factors affect heating oil prices in Co. Mayo?
- Prices in Co. Mayo are driven by three main factors: (1) the global Brent crude oil price, which sets the baseline for all refined petroleum products; (2) seasonal demand — prices peak December–February and are lowest in summer; (3) order volume — suppliers offer lower per-litre rates for larger orders, typically 900 litres or more. Local delivery costs also vary by how rural your address is.
- Is kerosene the same as heating oil in Ireland?
- Yes. In Ireland, "heating oil", "kerosene", and "28-second oil" all refer to the same product — Kerosene C2, a refined petroleum product used in domestic oil boilers. These terms are interchangeable when ordering. It is different from gas oil (also called "red diesel" or "35-second oil"), which is used in agricultural and commercial machinery, not domestic boilers.
- How much heating oil does an average Irish home use per year?
- The average Irish home uses between 1,000 and 1,500 litres per year, depending on property size, insulation levels, and thermostat habits. A well-insulated 3-bedroom home typically uses around 900–1,100 litres annually. Older homes with poor insulation can use 1,500 litres or more. A programmable thermostat and thermostatic radiator valves can reduce consumption by 15–20%.
Heating Oil Prices in Castlebar, Co. Mayo
Castlebar is the county town of Mayo and the commercial hub of the western midlands. With a population of around 12,700, it is the largest settlement in the county and one of the best-served towns in Connacht for heating oil supply. Multiple suppliers route deliveries through Castlebar, which means reasonable competition on price and good lead times by west of Ireland standards.
Like most of Mayo, the town sits beyond the reach of the natural gas network. Kerosene heating oil is the dominant domestic fuel, used in the majority of homes across the town and the wider suburban ring that has grown steadily over the past two decades.
What affects the price of heating oil in Castlebar?
Castlebar benefits from its position at the intersection of several major routes — the N5 to Roscommon and Dublin, and the N60 south to Claremorris. Suppliers can reach it efficiently from multiple directions, which keeps delivery costs lower than in more isolated Mayo towns. Order volume still plays the biggest role: households ordering 900 litres or more at once typically secure a better per-litre price than those ordering 500.
How to get the best price
- Compare at least three suppliers before placing your order
- Aim to fill up in late August or September before winter demand peaks
- Order 900 litres or more if your tank allows — it reduces the per-litre cost
- Confirm whether the quoted price includes VAT and delivery
Nearby towns
Looking for heating oil in a nearby area? Parce also covers Westport, Ballina, and Claremorris.