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Business Details
We are Andy Gas Southern, a trusted provider of heating, plumbing, electrical and renewable energy services based in Portsmouth and serving the surrounding areas. Our team has extensive specialist experience across all core trades we offer, ensuring every job is completed to the highest professional standard. We are fully Gas Safe registered for all gas boiler work, and NAPIT registered for all electrical installations and repairs. As Checkatrade registered and Trustpilot approved professionals, we adhere to strict industry codes of conduct for every client interaction. Our highly trained engineers can diagnose and resolve issues with boilers, air conditioning units, heat pumps, electrical systems and plumbing quickly and efficiently. We prioritise long-lasting, reliable solutions over temporary fixes to ensure your home systems run safely for years to come.

Whether you need a new energy-efficient boiler installation, routine boiler servicing, or urgent boiler repair, our team is ready to assist. We also offer full electrical services from small domestic repairs to full commercial installations, all carried out to UK safety standards. Our air conditioning and heat pump installations are designed to improve your homes comfort while reducing energy consumption and bills. We offer a full suite of boiler finance options to make new system installations more affordable for our clients. Our friendly local Portsmouth team is dedicated to supporting clients with all their home system needs. We understand how disruptive home system issues can be, so we work to complete all work as efficiently as possible without compromising on quality.
Highlights and features
  • We are fully Gas Safe registered for gas work.
  • Our electrical team holds NAPIT registration.
  • We are Checkatrade registered and Trustpilot approved.
  • We offer boiler finance options for new installations.
  • Our engineers have extensive specialist trade experience.
Services
Boiler Installations
Our boiler installation service covers both gas and LPG models for residential properties across Portsmouth and the surrounding areas. We help clients select the most energy-efficient boiler for their property, heating needs and budget. All installations are carried out by Gas Safe registered engineers to ensure safe, reliable long-term performance.
Boiler Servicing
Our annual boiler servicing is available for all gas and LPG boiler models for homes across Portsmouth. Our qualified engineers conduct thorough checks to identify small faults before they develop into costly, dangerous issues. Regular servicing improves boiler efficiency, extends its lifespan, and reduces the risk of gas leaks for safer home heating.
Electrical Services
Our full electrical services cover all domestic and small commercial electrical work across Portsmouth and the local area. From small repairs like faulty sockets to full installations including lighting, fuse boards and fault finding, our NAPIT registered team delivers safe, compliant work. We adhere to all UK electrical safety standards for every job we complete.
Air Conditioning Installations
Our air conditioning installation service provides efficient heating and cooling solutions for residential properties across Portsmouth. These systems maintain comfortable indoor temperatures year-round while improving air quality and reducing energy waste. Our qualified engineers handle all aspects of fitting and setup to ensure optimal performance from your unit.
Heat Pumps
Our heat pump installation and maintenance service offers eco-friendly, energy-efficient heating and hot water solutions for Portsmouth homes. These versatile systems reduce household energy consumption and lower carbon emissions compared to traditional gas boilers. Our experienced engineers ensure your heat pump is fitted correctly for maximum long-term efficiency and reliability.