About
Get to Know Gwresogi
North Wales Heating & Plumbing, Done the Right Way.
At Gwresogi, we believe heating should be smarter, greener, and built to last. Based in North Wales, we specialise in renewable heating systems, air source heat pumps, boiler upgrades, and plumbing services — with every project tailored to the unique needs of our customers.
Founded by Robert Williams, Gwresogi has grown from a local plumbing business into a trusted renewable energy specialist. With over a decade of hands-on experience, we’ve helped countless homeowners and businesses cut energy costs, reduce carbon emissions, and enjoy reliable heating and hot water year-round.
Projects
100+
Happy Clients
80+
Commitment
110%
Our Approach
Every home and business is different, which is why we never take a one-size-fits-all approach. From the very first consultation, we focus on understanding your property, your energy needs, and your long-term goals.
We pride ourselves on getting it right the first time, every time.
Careful design and planning for maximum system efficiency
Precision expert installation using only trusted technology
Exceptional aftercare and servicing to protect your investment
real foundation
Our Story
Our journey began in 2010, working with central heating and renewable systems. In 2014, we launched Robert Williams Plumbing and Heating, serving communities across North Wales with reliable heating and plumbing services.
As the demand for sustainable energy solutions grew, we evolved into Gwresogi — a company dedicated to renewable heating and tailored system design. Today, we continue to combine traditional craftsmanship with modern technology, delivering installations that balance performance, efficiency, and environmental responsibility.
