Company

Our History

Since 1978, Grant has built a reputation for engineering excellence, product innovation and reliability. What began with Stephen Grant developing heating products in Ireland has evolved into an internationally recognised heating technology manufacturing business.

Today, our headquarters in Birr, Co. Offaly, is home to our state-of-the-art manufacturing facilities, innovation centre, customer support and training facilities. With more than 500 people contributing across research and development, engineering, manufacturing, technical support and customer service, continued investment in people, products and technology has helped establish Grant as a trusted name in home heating. Discover our heritage here. 

Our Commitment to Quality

Quality and reliability have been central to Grant's success for almost five decades. From initial product development and design through to manufacturing and technical support, Grant is committed to delivering heating technologies that meet high standards of performance, efficiency and durability.

With a focus on engineering excellence and continuous improvement, we develop products that combine advanced technology with practical, user-friendly operation. This commitment extends beyond manufacturing, with dedicated technical support, product training and heat pump commissioning services available to support homeowners and heating professionals. Explore our heating products

Our Drive for Innovation

Innovation is at the heart of Grant's approach to heating technology. At our Group Innovation Centre and state-of-the-art manufacturing facilities, our R&D team and technical specialists research, design, test and develop heating technologies to meet the evolving needs of homeowners and the heating industry.

Through continued investment in research, product development and manufacturing, we continue to advance our range of efficient and sustainable heating technologies. From the award-winning Aerona R290 air source heat pump to the Quick Recovery hot water cylinder range, we remain committed to developing technologies that support the transition towards more sustainable home heating. Discover our latest developments.

Complete Heating Solutions

Grant's expertise extends beyond individual heating products. Through its range of integrated heating technologies and professional design and specification support, Grant helps homeowners and heating professionals plan complete heating solutions tailored to the requirements of individual properties.

Combining air source heat pumps, hot water cylinders, underfloor heating and smart heating controls, Grant provides integrated heating solutions designed to deliver comfort and efficiency for new builds and deep retrofit projects.

One Home. One Complete Heating Solution. Discover our complete heating solutions.

Our Values

Grant's success is built on the expertise, dedication and commitment of its people. Our four core values - Innovation, Integrity, Excellence and Respect - guide how we work together, develop heating technologies and support our customers.

Innovation

Innovation is the cornerstone of Grant's success. We continually develop new products, technologies and solutions that respond to customer needs and the evolving heating industry.

Integrity

We are committed to acting with honesty, responsibility and integrity in everything we do, building lasting relationships with our customers, colleagues and industry partners.

Excellence

We strive for excellence through high standards, continuous improvement and a commitment to delivering quality products and services that meet our customers' expectations.

Respect

We value our people, customers and partners, fostering a culture of teamwork, collaboration, mutual respect and open communication.