About Us

O’Hara & Harrison Ltd. is a leading Electrical Contractor in the North West. The company is based in Letterkenny, Co. Donegal. O’Hara & Harrison Ltd. have been successfully trading in Ireland for 40 years and our success is due to our ability to provide our clients, many of whom are long-standing, with a quality and efficient service on a continual basis.

We have a skilled and professional workforce and our focus is on maintaining high standards and combining quality with efficiency in every project we undertake.

Many years of experience on a wide range of electrical services, high standards of quality and safety is what we offer our clients. As a company we strive to deliver an excellent service on time, within budget and to the highest standards.

O’Hara & Harrison are one of very few Electrical Contracting Firms that provide a wide and varied range of services for all areas in the construction sector. Based in Letterkenny, Co. Donegal, this family run business has been providing advice on electrical design, value engineering and services co-ordination while supplying high quality, efficient and professional expertise to their customer base for over forty years.


We provide the full range of services when it comes to electrical work. Many of our customers have been with us for years and they come from a wide range of Industries including Commercial, Industrial, Pharmaceutical, Healthcare and Domestic, Educational etc.

Quality is of upmost importance in the construction industry and O’Hara & Harrison Ltd. have gone to great lengths to ensure that they deliver to the highest standard possible.

Our company focuses on quality assurance and we operate their Quality Assurance Management System which fully meets those requirements.  We aim to deliver high quality Electrical Installation Works using quality materials together with high quality workmanship which can be delivered within specific time frames.

It is Company Policy to comply with the Safety, Health and Welfare at Work Act 2005, the Health, Safety & Welfare (General Application) Regulations 2007 and the Safety, Health & Welfare at Work (Construction) Regulations 2013 as outlined in the Safety Statement.

The Management of O’Hara & Harrison Ltd make it their priority to provide and maintain safe working conditions, equipment and systems of work for all employees who work on sites managed by the company, ensuring all can work safely and remain free from injury and ill health.

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