Tria is West Cork Oil, City Oil, Brosnan Oil & Osborne Oil.

Tria is West Cork Oil, City Oil, Brosnan Oil & Osborne Oil. Founded by Michael & Kathleen Kirby in 1991, Tria has grown exponentially since foundation and in 2016, the Tria brand was established to bring our family of companies together under one brand. 

Headquartered in Caheragh, West Cork, the Tria group combines more than 110 years of history and experience in delivering fuels, including Home Heating Oil, agricultural diesel, road diesel, unleaded petrol, & marine diesel. Whether domestic, farming or commercial, Tria always puts its customers first by offering competitive pricing with convenient and dependable delivery. This would not be possible without our fantastic team and local experienced drivers.

“We put the customer at the centre of everything – their satisfaction is key to us having a successful business”

Micheál Kirby
Founder & CEO

Order online here or by calling Sam on 1800 470 470 or email

Remember we deliver six days a week and can arrange same day or next day delivery in Cork where possible with our delivery promise.

I'm Sam, let me get you the best offer on Home Heating Oil