How oil pricing works in Mayo
Kerosene (home heating oil) prices in Ireland are driven by two things: the Brent crude benchmark and the EUR/USD exchange rate. When oil rises on global markets or the euro weakens against the dollar, your delivered price per litre goes up. This happens regardless of which county you're in.
Mayo is served by many of the same regional suppliers as Galway and Roscommon. Remote townlands in west Mayo may carry a small delivery premium over more accessible areas.
Prices can vary 5–10 cent per litre between local suppliers depending on delivery distance, order size, and demand. Comparing before you order is the single easiest way to reduce your annual heating bill.
When to order
April to July is typically the cheapest window. Demand drops after the heating season ends, and prices usually follow. Many people order in April and top up again in August — this avoids the peak season entirely.
October to December is peak demand — prices are highest and some suppliers get booked up. Emergency deliveries cost more and aren't always same-day. Order before you need to, not when you're running low.
April–July
Low demand. Cheapest prices. Best time to fill the tank.
October–December
Peak season. Higher prices. Some suppliers book up.
How much to order
The minimum order from most suppliers is 500 litres. If your tank holds 900 litres or more, filling it gives you a better unit price — the per-litre cost drops as the order size increases.
If you have neighbours with oil tanks, a shared 1,000-litre order can bring the price down further. Split the delivery, split the saving. Most suppliers are happy to accommodate this.
Never let your tank drop below 10%. Sludge from the bottom can block your boiler filter and damage the pump. Set a reminder to order when you hit 25% — that gives you time to shop around.
Your oil tank
Single-skin tanks are still legal in Ireland. What matters is condition — no visible rust, no leaks, stable base, intact filler cap. Get it inspected by an OFTEC-registered engineer if it's over 15 years old.
Bunded tanks (a tank within a tank) are required near rivers, streams, or in certain flood-risk areas, and they're becoming the standard for all new installations. If you're replacing an old tank, go bunded — it's the right choice regardless of whether it's legally required for your location.
A 900-litre single-skin tank is the most common size for rural homes in the west of Ireland. Larger homes or those with older, poorly insulated walls may need 1,000–1,200 litres to cover a full winter.
Local suppliers in Mayo
Building our verified network for Mayo
We don't have a verified supplier listed for Mayo yet. Email hello@parce.ie and we'll help where we can, or ask locally — most areas have established suppliers known by word of mouth.
Thinking about switching away from oil?
Heat pumps are the main alternative for rural homes off the gas network. A modern air-to-water heat pump runs on electricity, cuts your carbon footprint significantly, and can be cheaper to run than oil — especially if you're on a night-rate tariff.
The SEAI heat pump grant covers up to €6,500 depending on your home's BER rating and heat pump type. Most homes in Mayo with a BER of C or better are suitable. Older homes with poor insulation may need upgrades first.
Common questions
When is the cheapest time to buy heating oil in Mayo?▾
April to July is typically the cheapest window — demand is low after the heating season. October to December is peak and prices are highest. Order before you need to, not when you're close to running out.
How much oil should I order at once?▾
Most Mayo suppliers have a 500-litre minimum. Ordering 900 litres if your tank allows gives a better unit price. A shared order with a neighbour can improve it further.
Do I need a bunded tank in Mayo?▾
Single-skin tanks are still legal but bunded tanks are the modern standard. If you're near a river, stream, or groundwater source, a bunded tank may be required. If you're replacing an old tank, go bunded.
Can I switch from oil to a heat pump in Mayo?▾
Yes. The SEAI heat pump grant covers up to €6,500. Suitability depends on your home's insulation level and BER rating. Older rural properties may need insulation upgrades first to make a heat pump viable.
How do I find a heating oil supplier in Mayo?▾
Parce is building its verified supplier network for Mayo. In the meantime, ask locally — most areas have one or two established suppliers known by word of mouth. Email hello@parce.ie if you'd like us to help.
What should I do if my oil tank is old?▾
Have it inspected by an OFTEC-registered engineer. Check for rust, leaks, a stable base, and an intact filler cap. If it's over 15 years old or close to a water source, replacement may be the safer option.
Related guides
- →Heating Oil IrelandHow oil pricing works, when to order, and what your tank needs.
- →Heat pumps IrelandReplace your oil boiler — costs, grants, and suitability.
- →SEAI home energy grantsHeat pump grant up to €6,500 plus insulation and solar grants.
- →Insulation IrelandImprove your home's heat retention before switching fuel.