About Us

“RSG stands for Renzo Stephen Gistri – that’s me! We were the first company in the area to achieve MCS accreditation for renewable energy, so customers know that they are getting the very best possible service. Much of our work is through Builders & Architects whom we have worked alongside for many years and we have a truly enviable reputation in the industry.”


RSG – Resourcing Solar Ground & Air

RSG was started in1990 by Renzo Gistri, who has lived in Devizes all of his life. We are a family-run business with over 30 years in the plumbing and heating trade and we pride ourselves on the quality of our workmanship and professionalism with all of our installations.

We are accredited installers of heat pumps, giving you the assurance that from design to installation and provision of all the necessary documentation your are in safe hands.

Renzo worked for Renelec prior to starting RSG. He slowly built the business and adapted to new technologies. For the first 15 years RSG installed mainly Gas or Oil heating systems but Renzo always had a passion to adapt to new technologies, so 15 years ago he decided to get involved in renewable energy, installing Solar thermal, Ground Source heat pumps & Air Source heat pumps, and with this in mind we adapted the name of the company to include this & we became RSG Plumbing Renewables & Heating Ltd.

Kitchen interior in cream colour with island and velux windows

Our Staff

All our employees are reliable and friendly. We are all Gas Safe/ Oftec registered and have many years experience.

Our Engineers

Renzo Gistri, Founder & Company Director | 35 year experience

Jamie Wright | Foreman 35 years experience

Farley Maslen | 15 years experience

Robert Holz | 15 years experience

Adam Sollener | 12 years experience

Chris Pithouse | 5 years experience

Ashlee Gistri | 4 year experience

Office Staff

Renzo Gistri | Company Director/Tendering & design

Clare Gistri | Company Director/Secretary