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Review summary

Based on reviews, created with AI

Reviewers overwhelmingly had a great experience with this company. Customers consistently praise the staff for their professionalism, efficiency, and helpfulness, noting that the teams are knowledgeable and communicative throughout the entire process. Many people highlight the excellent quality of the work, from installations to tidiness, and appreciate the clear explanations provided about the products and services. The overall user experience is frequently described as smooth and satisfying, with many consumers recommending the company. However, some customers also noted that getting answers to queries from office staff was not always straightforward. Additionally, a few people mentioned a slow start to the installation process, though the on-site teams ultimately completed the work professionally and efficiently.

What people talk about most

Staff

Clients share positive opinions on staff, consistently praising their professionalism, helpfulness, and... See more

Service

Consumers find service to be positive, consistently praising the efficiency, responsiveness, and... See more

Product

People report positive experiences with products. Customers are pleased with the quality and functionality of... See more

Quality

Reviewers mention positive feedback about quality. Customers are very pleased with the outcome and the... See more

Sustainability

People report positive experiences with sustainability efforts. Many customers are delighted with... See more

User experience

Reviewers highlight positive aspects of user experience. Customers consistently praise the clear explanations... See more

Based on these reviews

Rated 5 out of 5 stars

Friendly staff Jordan and Keran turned up just after 08.00 wasting no time and informing us of what they were going to do and got on with it. Tidying up as they worked and assisted with our phones u... See more

Rated 5 out of 5 stars

Thankyou George and the crew. Ours was quite a big job requiring pipe work from scratch throughout in an old granite house with modern extension, the work which required maximum disruption but was ca... See more

Rated 5 out of 5 stars

Jack, James and John worked cleanly and efficiently to complete our solar panel fitting in Dorset. They made sure the panels were sitting flat on our roof, which was a challenge, but they worked tirel... See more

Rated 5 out of 5 stars

GreenGenUk have recently installed an air source heat pump to replace our old oil boiler and oil tank. We were extremely happy with the quality of the work carried out by Ali and Dan. As the system w... See more


Company details

  1. Solar Energy Company
  2. Electrical installation service
  3. Central Heating Service
  4. Heating equipment supplier
  5. Heating service
  6. Solar energy equipment supplier

Written by the company

GreenGenUK is an award-winning provider of renewable energy solutions, proudly serving the South West since 2011. Originally based in Cornwall, we specialise in the installation of Air and Ground Source Heat Pumps, Solar PV, Solar Thermal, and Battery Storage Systems. We partner with leading brands like Mitsubishi, Samsung, Vaillant, JA Solar, AIKO, Jinko, Q.Cells, Tesla, SolarEdge, and GivEnergy, delivering high-quality, energy-efficient solutions tailored to meet each customer's unique needs. Our installations are carried out to industry-leading standards, ensuring maximum efficiency and long-term performance. Customer satisfaction and peace of mind are at the core of our services. GreenGenUK provides comprehensive aftercare and support for all renewable energy installations, guaranteeing smooth operation for years to come. We offer extensive manufacturers' warranties, with some lasting up to 30 years, emphasising the durability and reliability of our products. Our commitment extends further with our workmanship warranty of up to 10 years, showcasing our confidence in the quality of our work and dedication to customer support. As an MCS-certified and TrustMark-accredited company, GreenGenUK adheres to the highest industry standards. Whether you're looking to lower your energy bills or adopt a greener lifestyle, GreenGenUK is your trusted partner for sustainable energy solutions in the South West.


Contact info

4.8

Excellent

TrustScore 5 out of 5

164 reviews

5-star
4-star
3-star
2-star
1-star

Hasn’t replied to negative reviews

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Rated 5 out of 5 stars

I have just had an airsource heatpump…

I have just had an airsource heatpump installed. The process from start to finish has been very efficient. The house plumbing was not simple but the engineers Ben E and Andrew sorted everything out and all seems to be working well. All the engineers and staff have been a pleasure to have in the house, polite, tidy and easy to deal with. I am delighted with my really warm house and would strongly recommend Greengen.

4 November 2025
Unprompted review
Rated 1 out of 5 stars

Poor customer service

Poor customer service. No show for scheduled appointments. Lack of communication and faulty equipment.

30 October 2025
Unprompted review
Rated 5 out of 5 stars

Excellence personified

We needed to have an EV charger not sure where to go we first called a well known energy supplier who also supply EVs and a variety of other related products. The sales man told me such a different tale - making it sound horrendous, compared to the experience my cousins’ had.
So I rang GreenGen here in Helston, the lady I talked to, reassured me that it sounded wrong! She asked one of their team to come and chat to us. Alan came, he explained the whole process clearly and totally understandably, taking into account our solar panels. He proceeded to take a survey, all sounding more and more in line with my cousins’ experience!
We received a good proposal from Sophia, popped up to discuss finer details with her and paid the deposit.
On the arranged day the engineer came on time with a cherry greeting - we met Treeve, from the first he listened to us and reassured us that we could have the actual charging unit inside. He made this totally possible, he worked so hard - always smiling answering any questions we had. He was a pleasure to have around the house. Finally he got us on line using the app,
This was an excellent experience all round from our first phone call to the final finish. If there were more stars to give this very excellent group of people especially Treeve then I would!
I heartily recommend the Helston GreenGen, with absolutely no reservations.

7 October 2025
Unprompted review
Rated 5 out of 5 stars

GreenGen impressive

It was real pleasure to welcome the GreenGen team into our lives. Following one of those 'light bulb' moments my wife and I decided we must do somerthing about our dirty LPG heating and so called in GreenGen for an estimate to have solar panels fitted and a new air-source hearter installed. We were fortunate to have a budget and with the government grant for the air-source heater we agreed to go ahead. The professionalism of the teams involved and their capacity for hard work and deadlines was impressive. Their approachabiliy for people of our age (we are in our 70s) and sympathetic responses to our basic questions meant we felt safe in their hands. Naturally my wife and I would recommend them highly.

22 September 2025
Unprompted review
Rated 5 out of 5 stars

Thankyou George and the crew

Thankyou George and the crew. Ours was quite a big job requiring pipe work from scratch throughout in an old granite house with modern extension, the work which required maximum disruption but was carried on around us respectfully and we were able to live comfortably throughout it all. Our questions, however daft were always answered. The workmanship was excellent, the working area was always left tidy. It was heartening to see apprentices doing such a great job, and we’ve now got a lovely warm house. Very impressed 😀

19 September 2025
Unprompted review
Rated 5 out of 5 stars

Air source heat pump and EDDI installation professionally completed

Although a slow start on the installation, Craig and Adam were very professional and friendly, did a neat and tidy job, explained everything in an understandable way and answered any queries. They worked hard and seemed very knowledgeable and competent in what they were doing. The system works well and is responsive: our large detached house feels warm and comfortable. Time will tell with regard to whether our energy bills are reasonable.
Unfortunately, getting answers to queries from office staff was not always so straightforward.

27 September 2025
Unprompted review
Rated 5 out of 5 stars

Reference Adam Electrical Engineer

Reference: Adam Electrical Engineer

Dear GreenGenUK
Adam is a very polite young man and is an excellent ambassador for the GreenGen team. His explanation off the heating system was very clear and only had to go through it once. He is also a very neat and tidy installer. We are very pleased with his work.
Jeremy Legge MBE

19 September 2025
Unprompted review
Rated 5 out of 5 stars

Great quality Job

GreenGenUk have recently installed an air source heat pump to replace our old oil boiler and oil tank. We were extremely happy with the quality of the work carried out by Ali and Dan. As the system was an existing older system which had to be adapted they did a good job in solving any teething problems. We would recommend GreenGen.

18 September 2025
Unprompted review
Rated 5 out of 5 stars

Air Source Heat pump Falmouth

From the prompt reply to my initial email to final installation the whole team at GreenGen have been excellent.
Once I had contacted the company and explained I was working to a very tight deadline due to the loss of my original contractor. Everyone was honest and clear about what could be done.
Products options were clearly explained, and professional advice was given when I asked for it, at the initial meeting and again during the plumbing managers’ survey.
I have nothing but praise for the team who fitted the system, for their politeness, communication skills, attention to detail ability to think creatively and install the system in a way that took into consideration my future plans for my home.
Added to this, they were always punctual, finished on schedule and left the place tidy.
I would not hesitate to recommend this company to friends and neighbours.

4 September 2025
Unprompted review
Rated 5 out of 5 stars

Ryan Dodd.

Ryan, Jordan and the team were spot on for the two weeks that there were in our home fitting the new heat pump system. Everything they did they asked before hand, kept us informed and cleaned up at the end of every day. Good system knowledge which made what was a disruptive job be not an issue. Obviously proof will be in the system test but I have no worries that’s it all done to a great standard. Well done team and GreenGen 👏

12 September 2025
Unprompted review
Rated 5 out of 5 stars

Very difficult to fault

From my initial contact to completion of the install, Green Gen have been an excellent company to deal with. No hard sell at any time, just helpful people that know there product willing to help the customer through the process with as little fuss as possible.
The price for my large domestic system was very competitive, all high end products installed. The guy’s who fitted my system were neat, tidy, funny and knowledgeable a great bunch.
Green Gen a Cornish company very hard to fault. Highly recommended, Thank you.

11 August 2025
Unprompted review
GreenGenUK logo

Reply from GreenGenUK

Hi Philip

Thank you so much for your feedback. It’s great to hear that the installation process felt smooth, straightforward, and supportive.

We really appreciate your comments about our team on site — they’ll be delighted to know their efforts (and humour!) made a difference.

Thank you again for choosing GreenGenUK.

Rated 4 out of 5 stars

Info from Cameron was extendjj in ve…

Info from Cameron was extensive, and he updated several times without complaint.
Installers of the PV roof equipment were quick, tidy and polite. Special praise to the electricians, Ben, Fin and Felix for their work and feedback.
However, the length of time it is taking; 3 weeks and counting, to get the service pack and Solis App sorted is disappointing. Please get a move on with this guys!
Geoff Pring

8 September 2025
Unprompted review
GreenGenUK logo

Reply from GreenGenUK

Hi Geoff,

Thank you very much for your feedback and for the kind words about both our sales and installation teams — we will make sure Cameron, Ben, Fionn and Felix hear your praise.

We’ll be chasing up the outstanding pack and Solis App for you today and will come back to you with an update by email. It really shouldn’t take this long, so completely understand your frustration and appreciate your patience.

Thanks again for choosing GreenGenUK.

Rated 3 out of 5 stars

no problems with the fitters

We had no problems with the fitters, they informed us what they were doing, how long it would take, always tidied up.
The problem we have encountered is with the office staff and their lack of customer service, saying they will get back to us, but not doing so. This is trying to make appointment for engineer to come and check a problem we are having. Poor customer service from phone conversation (with whoever answers the phone) lack of response from our email follow up, if this is customer service how will we fare if we take out the service plan?

21 July 2025
Unprompted review
GreenGenUK logo

Reply from GreenGenUK

Thank you for sharing your feedback. We’re really pleased to hear the positive feedback about our installers however we’re very sorry to read about your experience with our office team — that’s not the level of service we aim to provide.

As we can’t identify you from the review, please could you email your details to sales@greengenuk.com and our MD Rob will call you back asap.

Rated 5 out of 5 stars

Great installation experience

GreenGen have just installed solar panels, a battery and a heat pump for me, and I am very pleased with the outcome. I was extremely impressed with the guys who did the installations – they were very professional, working to extremely high standards, and very pleasant to have around the house. In addition Ben E, who did the Heat Pump installation, was creative in thinking around various issues that arose, including advising a much better location for my pump, and made all the pipework and trunking look absolutely immaculate. Max handled the installation of the battery and the inverter with similar precision and professionalism. The guys who installed the solar panels were also great. I was also impressed with Josh in the sales team who was patience personified with my endless questions and requests for more information at the start of the process.

19 August 2025
Unprompted review
GreenGenUK logo

Reply from GreenGenUK

Hi Caroline

Thank you for sharing such a detailed review. It’s fantastic to hear how pleased you are with your new solar, battery and heat pump system.

We’ll make sure your feedback is passed on to Ben E, Max, Josh and the rest of the installation team!

We really appreciate your trust in GreenGenUK and wish you many years of clean, efficient energy from your new system.

The GreenGenUK Team

Rated 5 out of 5 stars

I initially placed the contract for…ASHP

I initially placed the contract for having a ASHP with another company but eventually cancelled that after having trust issues.
Went back to GreenGen who have been excellent in sorting my needs. No problems in communication from them,and when it came to installation time Ryan turned up, was prompt every day, respected my property and was polite and kept me informed as to what was going on. Then Zack and Treeve came to do the electric side and were understanding in all of my questions.
Overall well satisfied so far with the installation, now waiting for the colder weather to test out the heating side.
Will always recommend GreenGen.

4 August 2025
Unprompted review
GreenGenUK logo

Reply from GreenGenUK

Hi Tony

Thank you for sharing your experience. We’re really pleased you felt confident coming back to us after your initial plans changed.

It’s great to hear that Ryan, Zack and Treeve looked after you so well during the installation, keeping you informed and respecting your home throughout the process.

We look forward to hearing how the system performs for you as the colder months arrive, and we truly appreciate your recommendation.

— The GreenGenUK Team

Rated 5 out of 5 stars

Solar, battery and Air Source Heat pump installation

We have just had a solar system with battery and an Air Source Heat pump fitted by GreenGenUK and the experience was excellent throughout. Alan came to see us twice to discuss our requirements and help us to decide what system would be right for us…… no pushy sale talk just good honest advice. All of the trades people (roofers, electricians and heating engineers) that came to do the install (which was quite complicated) were very polite and friendly and showed a huge respect for our property;they were always prepared to answer any questions we had. They were all very professional and worked very hard to finish the install within the time quoted, which they did. All of GreenGen’s office staff were friendly and helpful whenever I raised any queries. It was great to get our install completed by a local Cornish based company and I would have no hesitation in recommending them to anyone who is thinking about ‘going green’ with their energy. We have seen a huge difference in our energy usage since we had the solar and battery fitted and are now ‘selling’ excess electricity back to the grid. Thank you GreenGen.

4 August 2025
Unprompted review
GreenGenUK logo

Reply from GreenGenUK

Hi Mike:

Thank you for such a thoughtful review. It’s fantastic to hear that from Alan’s advice at the start right through to the installation and office support, the whole process felt smooth and supportive.

We’re delighted that our teams on site looked after you so well and that you’re already seeing the benefits of your solar, battery and heat pump system — including exporting back to the grid.

As a South West company we really value your recommendation, and we’re proud to have helped you make the switch to greener energy.

— The GreenGenUK Team

Rated 5 out of 5 stars

GreenGenUK have provided very good…

GreenGenUK have provided very good advice and a very good installation service. I would highly recommend them to anyone.

They were happy to answer my silly questions and the installers Max E and Treeve were very polite, clean and professional. They were also very understanding and helpful when I could not get the car charger mobile app to work. Thank you.

17 July 2025
Unprompted review
GreenGenUK logo

Reply from GreenGenUK

Hi Pauline

Thank you for your kind words and recommendation. We’re really pleased you found our advice and installation service helpful, and that Max E and Treeve made the process smooth and professional for you.

- The GreenGenUK Team

Rated 5 out of 5 stars

Greengen carried out our air source…

Greengen carried out our air source heating installation last month. We would particularly commend the installation engineers, Ben and Andrew. They were polite, friendly, tidy and communicative, making every effort to consult us when there were any options on positioning. A little electrical tidying up was required after but was dealt with quickly and any questions we have had have been answered fully and with courtesy

9 June 2025
Unprompted review
GreenGenUK logo

Reply from GreenGenUK

Hi Sue

Thank you for taking the time to leave your feedback. It’s great to hear that Ben and Andrew made such a positive impression during your installation — we’ll be sure to pass on your commendation.

We’re also pleased that the follow-up electrical adjustments were handled quickly and that your questions have been answered clearly. We really appreciate your comments and your trust in GreenGenUK.

— The GreenGenUK Team

Rated 5 out of 5 stars

Amazing professional and thoughtful

Craig and the team worked professionally and really went the extra mile to make sure we were inconvenienced as little as possible throughout the works. We had solar and heat pump installed and it was a complex job. They worked the weekend and long days to get it completed to schedule and were polite and diligent throughout cleaning up everyday before they left. We couldn't be happier with how the job went and we are left with a very professional set up. Thank you!

18 June 2025
Unprompted review
GreenGenUK logo

Reply from GreenGenUK

Hi Robyn

Thank you for your wonderful feedback. We’re delighted to hear that Craig and the team went the extra mile to keep disruption to a minimum and complete your complex solar and heat pump installation on schedule.

It’s fantastic to know their hard work, professionalism and attention to detail left you with a set-up you’re so happy with. We’ll be sure to share your comments with the whole team.

— The GreenGenUK Team

Rated 5 out of 5 stars

First class local firm

GreenGen installed our solar panels 3 years ago and did such an excellent job that when our air source pump packed up it was a no brainier to ask GreenGen to do the job. From Alan coming to give a quote to the boys coming to install everything was done professionally. Everything was explained to me, my carpets were covered and every day everything was cleared away. Special thanks to Morgen & Adam for doing such a great job, not forgetting Rachael in the office, always friendly and getting things sorted. A great local team who I would have no hesitation in recommending.

7 April 2025
Unprompted review

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