How to find the cheapest home heating oil

If you use oil to heat your home, here’s how to find the cheapest heating oil and save money.

Heating your home with kerosene is more expensive than natural gas, so it’s helpful to cut costs where you can. Here are our top tips for the biggest savings:

1. Avoid seasonal hot spots

Although you can’t control the price of heating oil, you should avoid topping it up between October and February - and in particular, December - when the cost is usually higher. Opt for the spring or summer months instead.

Doing a big order around August/September can last you right through the winter.

2. Buy in bulk and reduce your orders

The more oil you buy in one go, the lower the price per litre will be. Avoid ordering less than 500 litres if you can, and opt for 1,000 litres or more for the best rates.

The fewer orders you make, the less you’ll spend on delivery charges, too.

3. Buy online and check extra charges

It’s nearly always cheaper to order online than over the phone or in store.

As well as checking the oil price per litre and buying online, there are other costs to look out for, including:

  • Delivery charges: These depend on the supplier and how rural your location is.
  • Credit card fees: E.g. 2% of the total or a flat rate per order - around €4.95 - may be added.
  • Paying in instalments: Paying upfront is usually the cheapest option, so do this if you can.

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4. Join a community oil club

Consider bulk ordering oil with others in your area, for cheaper rates. You’ll get a better rate per litre of oil if you place a larger order, and you’ll spend less on delivery charges.

If there isn’t a club in your locality, consider asking neighbours if they’d be interested in setting one up.

5. Shop around and compare oil prices

By comparing suppliers that deliver to your area, you can find the best rate available. allows you compare prices from different companies. Simply select your location and you’ll get a list of local suppliers you can sort by price.

There’s also a link to each supplier’s website, so you can use their quick quote tool to get an exact amount.

* only displays prices for kerosene, not gas oil which will be a different price.

What about your electricity bill?

If you haven’t switched your electricity provider in over a year, you’re probably on a standard tariff and paying more than you need to.

Here’s how to find the cheapest electricity tariff and compare plans. Once you’re ready to switch providers, our guide explains the switching process step by step.

Don’t be put off if you’re a tenant. It’s usually the case that you can switch your electricity supplier too.

Take a look at our guide on how to switch energy suppliers as a tenant.

Save hundreds off your electricity bill

It only takes a few minutes to find a cheaper deal and start saving

Home Heating Oil FAQs

How do I find my local community oil club?

If nothing has come up after a Google search, ask neighbours, clubs and businesses in your area if they’ve heard of one.

If there isn’t an oil club in your locality, you could gauge how much interest there is and set one up yourself.

How much kerosene would I use in a year?

The amount of home heating oil you use depends on things like:

  • The size of your home/household
  • How often the heating is on
  • Whether you use kerosene to cook food

An average 3 bedroom household uses around 1,500 to 2,000 litres of kerosene a year.

If your household is bigger or smaller than this, the amount you use is likely to go up or down.

Most households need to buy oil two or three times a year, depending on the tank size.

How much oil does a domestic tank hold?

The capacity of an oil tank varies greatly but an average size tank can hold around 1,000 to 2,500 litres.

If you’re not sure how much your oil tank holds, there should be a product label on the side or back of the tank confirming its maximum capacity.

Otherwise, you can take some measurements yourself using a tank size calculator.

What affects the price of kerosene?

The price of home heating oil changes frequently, affected by things like:

  • Weather conditions
  • Seasons
  • Demand
  • Stock market oil prices
  • Exchange rates
  • Conflict where the oil is produced

What else is gas oil known as?

Gas oil is dyed green so that it’s not mistaken for regular diesel. It’s also known as:

  • Marked Gas Oil (MGO)
  • Green diesel
  • 35 second oil

It’s used in older outdoor burners only.

What else is kerosene known as?

Kerosene, which is orange in colour, is also known as:

  • Jet A1 kero
  • Standard kero
  • 28 second oil

It’s used in modern burners and is suitable for inside use, e.g. in cookers and ranges.

What happens if I order too much oil for my tank?

If you’ve overestimated how much oil will fit in your tank, most suppliers will top it up to a safe level and only charge for the amount you take.

The less oil you order, the higher the rate per litre.