RETROFLOW GROUP LTD
4.6(7)Sunderland




About
RETROFLOW GROUP LTD is a solar installer based in Sunderland. They fit solar panels, battery storage, heat pumps, underfloor heating, and thermostats and heating controls. Customers say the team explain things clearly, know their work well, keep the installation tidy and respectful, and manage the job smoothly from start to finish. They are listed with SICI as an installer.
Services
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Thermostat and heating controls
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Heat pump installation
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Reviews
4.6
Several customers report good experiences with RETROFLOW GROUP LTD for solar panels and air source heat pumps. Multiple reviewers say everything was explained clearly and the team was professional, and some describe the installers as tidy and respectful of the property. One reviewer reports a smooth, well-managed installation and another says the system is working well and keeping the house comfortable. However, one reviewer describes a poor experience, saying responses were often very slow, calls and messages became hard to get answered, and the phone system was unprofessional with no proper company greeting.
My experience with Retroflow hasn’t been good. At first they seemed like they wanted to help, although their response was often very slow. Once the problems really started, though, everything changed. Calls and messages became very difficult to get answered, and it felt like once they decided something wasn’t their responsibility, they weren’t so willing to do anything. Even getting through to the office is difficult. The phone often goes through to an extension where you can’t even leave a message. There’s no proper company greeting or anything to tell you who you’ve actually reached, which I find quite unprofessional. I’ve spoken to different people and, overall, I’m very disappointed with how things have been handled. When things go wrong, they don’t seem so willing to help.
Retro flow Group installed our solar panels recently and was super impressed with the service from start to finish. Everything was explained clearly and professionally; with everything was working to a high standard before the installation team left. Already seeing benefits! Fantastic work!
We’ve recently had an ASHP, solar PV and battery system installed at our home in Houghton le Spring and the whole experience has been excellent from start to finish. From the initial survey through to completion, everything was clearly explained and we felt well informed at every stage. The entire team – from the scaffolders to the heat pump engineers and PV installers – were professional, knowledgeable, and a credit to the company. The work was carried out efficiently, with great attention to detail, and the site was kept clean and tidy throughout. Any questions we had were answered clearly and honestly, which gave us real confidence in the system and installation. A very smooth, well-managed installation process overall. Highly recommended
I have had solar panels installed yesterday by the guys at retroflow. They were fantastic !! The workmen were absolutely immaculate whilst carrying out the work , everything is so neat and tidy. I will however need to replenish my tae and coffee supplies now tho haha 10/10
We recently had solar panels installed by RetroFlow Group Ltd and couldn’t be happier with the whole experience. From the initial consultation through to installation, the team were professional, knowledgeable, and easy to deal with. Everything was clearly explained, there was no pressure, and the installation was completed efficiently and to a high standard. The system is working perfectly, and we’re already seeing the benefits. The installers were tidy, respectful of our property, and made sure we understood how everything worked before they left. I’d highly recommend RetroFlow Group Ltd to anyone considering solar. A smooth process from start to finish!
After a lot of research, we chose RetroFlow Group Ltd to install our air source heat pump — and it was definitely the right decision. What impressed us most was how thorough they were. They looked at insulation, radiator sizing, and overall heat demand before recommending anything. It felt properly engineered rather than just another install. The team worked hard, kept disruption to a minimum, and communicated clearly throughout. There were no surprises, no hidden extras — just honest, solid workmanship. Now that it’s up and running, the system is quiet, steady, and keeps the house at a really comfortable temperature. It’s reassuring knowing we’ve future-proofed our home with a more efficient heating solution. Very happy with the result and the service from start to finish.
Great team to work with — professional, organised. Communication throughout projects has been clear and responsive. Helped me save so much money with my Airsource heat pump and new solar panels.
Area
Opening times
- Monday9:00 AM – 5:00 PM
- Tuesday9:00 AM – 5:00 PM
- Wednesday9:00 AM – 5:00 PM
- Thursday9:00 AM – 5:00 PM
- Friday9:00 AM – 4:00 PM
- SaturdayClosed
- SundayClosed
Additional information
- Incorporated 2025
- MCS SICI-22852
Other solar installers nearby
Also available in Sunderland
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