Greenwatt Ltd

Greenwatt Limited is a SEAI‑registered one‑stop‑shop specialising in high‑end retrofit solutions that transform existing houses into warm, energy‑efficient homes. By handling every stage of the retrofit process—from Building Energy Rating (BER) assessments and grant applications to the installation of insulation, heating upgrades and renewable technologies—Greenwatt removes the complexity for homeowners and delivers a seamless, low‑disruption experience.

The company’s core services include comprehensive energy‑efficiency audits, design and installation of insulation, ventilation and heating systems, and full management of SEAI grant eligibility and paperwork. As a recognised contractor with both the Sustainable Energy Authority of Ireland (SEAI) and the National Standards Authority of Ireland (NSAI), and a member of the Irish Green Building Council, Greenwatt guarantees quality workmanship and compliance with the latest sustainability standards.

Operating from bases in Rathfarnham, Dublin 14 and Cavan, Co. Cavan, Greenwatt serves Irish homeowners who wish to reduce their energy bills, lower their carbon footprint and enjoy a cosy, future‑ready residence.