The various teams of workers seemed to be under a lot of pressure with various job sites active. They were all courteous, pleasant and professional. From the scaffolds, panel team and electricians. Contact with the Head office was efficient and professional as well in obtaining up to date information on when the various teams would be arriving. Allen Tenbury Wells.

GSL supplied and fitted a battery. The job was done really well. GSL were excellent in communicating with us, and we were able to contact them by phone very easily. They arrived on time and the installers were pleasant and helpful.

Turned up on time ,did a good job and cleaned up afterwards. Thankyou Josh and Dan

I’ve been very impressed with all your team that have been here on 02/10/2024 to install the new boiler system D.oneill and Robert Daniel. Brilliant job well done. And also the survivor Dave Joyle and the team member that came on Wednesday 05/02/2025 Rob leyland I think his name was ( if not I apologise) thank you again. James Stretch 69 Salisbury Hill View TF9 1DN

Simon Harrington visted my property today to fit the boards in my loft. He is such a lovely man, really polite and professional. 100% recommended 👌

GSL and their staff could not be more helpful. Zoe in the office and Mark engineer all brilliant. We had a problem with datalogger, sent us a new one and Mark engineer installed, up and running all good now. Thank you GSL!

I think the measure of a good company is not just the installation, as in this case solar panels , the battery and inverter, heat pump and the central heating . It's after care, and to be fair we did have a few teething problems with the system grant store had installed. So why five star? Well everytime ther was a problem the lovely staff at the wigan office were always polite and professional, with an engineer out asap . Then thankfully we had a few really good engineers , I even had calls from Dean one of the directors. But the top chap was the very experienced John, not only was he a fantastic engineer , he really was the nicest man you could hope to meet, anyway the first thing was he spotted a few problems ,they changed some radiators, fully lagged the loft, installed a more powerful pump , brand new and fitted a new gateway all free of charge. John just kept saying we'll get it right and they have . They have never let us down , and have been absolutely fantastic to us . That's why they get five stars from us , and this is the measure of a great company .we couldn't fault them in anyway. So thinking heat pump , solar, don't bother with anyone else go to gsl a company you can trust.

Liam the electrician came and wired my mums boiler and extractor fans and was first class from start to finish

Jonny and Ryan did a good job installing the vent for my fan

Just had Adam,your electrician to wire and set up my new heating system,what a pleasant guy neat tidy and very polite and friendly,it was a pleasure to have him in my house