Carbon Saving Group Reviews 67

TrustScore 4.5 out of 5

4.4

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Rated 5 out of 5 stars

From the outset, James was very helpful in guiding me through my requirements in a heat pump hot water system. My old system completely failed and cold showers exacerbated by health problems. The team... See more

Company replied

Rated 5 out of 5 stars

Callum Kerr came in person rather than just look at my roof from Google Earth. There was no pressure and no underhand sales tactics (unlike other salesmen). He clearly knew his stuff.... See more

Company replied

Rated 4 out of 5 stars

Just had 1st time central heating and new boiler fitted . Plumbers were great and did there utmost to remedy any problems . Also fitted system in 2 days with a minimum of mess . Great job , only downs... See more

Company replied

Rated 5 out of 5 stars

Contacted Carbon Zero to get a quote on loft insulation and Callum came to do a survey. He kept me informed about his time of arrival and was highly professional, but still very personable, duri... See more

Company replied

Company details

  1. Heating Contractor
  2. Boiler Supplier
  3. Environmental Renewable Natural Resources
  4. Heating Equipment Supplier
  5. Solar Energy Company

Written by the company

Carbon Saving Group are true energy specialists based in Plymouth, delivering high‑quality installations, repairs, and complete home energy solutions throughout Devon, Cornwall, and across the South West. With over 40 years of combined knowledge and experience, their team brings real expertise to every project. What really sets Carbon Saving Group apart is their commitment to helping homes and businesses lower their carbon footprint while also reducing energy bills. Their bespoke, customer‑focused approach ensures every system is tailored to individual needs, and their professionalism gives you complete confidence from start to finish. If you’re looking for a knowledgeable, reliable, and genuinely dedicated energy solutions company, Carbon Saving Group are a team you can trust for outstanding service every time.


Contact info

4.4

Excellent

TrustScore 4.5 out of 5

67 reviews

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Replied to 100% of negative reviews

Typically replies within 1 week

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Rated 3 out of 5 stars

I contacted this company for cavity…

I contacted this company for cavity wall insulation and extraction Cullom kerr came to do the survey for us and told us that the in cavity insulation was there and needed to come out and said that he would sort it out for us and then we had a phone call from Catherine at the office and she said that we had to pay a deposit which we thought was ok but she was very demanding so I paid the deposit a couple of weeks wet bye so I rang Cullom and he said that he would sort it a week later we had a phone call from max energy and said that they are going to do a cavity extraction and they did and then when they finished Catherine was very persistent for the balance to be paid which Cullom had not done a survey which when I contacted him he came back and done a survey and he told me that I should contact j j crump for my cavity wall insulation so he told me that it would be better if I contacted them directly and i did and there surveyor came and did the survey and he said that some of the insulation is still in my wall at the front of my house and in the back of my house so I contacted Cullom kerr again and he told me that he would sort it out for me so i left it with him and 4 weeks later he will not answer my calls and the office will not answer my calls and my emails so in turn i have paid for cavity wall extraction which has not been done properly thanks to carbon saving energy so stay away for this company for cavity wall extraction and installation thank you.

February 28, 2026
Unprompted review
Carbon Saving Group logo

Reply from Carbon Saving Group

Thank you for taking the time to explain your experience, and we are genuinely sorry for the frustration and inconvenience this has caused you.
We acknowledge your concerns regarding communication, the handling of the survey process, and the outcome of the cavity wall extraction works. This is not the level of service we aim to provide, and we apologise that you feel let down at several stages.
Regarding the deposit and payment process, your feedback has been passed to management and the call recordings will be reviewed to ensure our procedures and communication are appropriate and respectful.
In order for us to fully investigate the extraction concerns and take corrective action, we do require the survey report completed by JJ Crump which confirms the remaining insulation. As previously requested on 29/04, once this report is provided, we can assess the findings and work with you to arrange the necessary remedial action as quickly as possible.
We also apologise for the delays in returning your calls and emails; this has been raised internally, and we will ensure a dedicated point of contact is assigned to you going forward to avoid any further breakdown in communication.
Please send the JJ Crump report directly to us at your earliest convenience so we can move this matter forward and bring it to a satisfactory resolution.

Rated 5 out of 5 stars

Just what was needed

Callum Kerr came in person rather than just look at my roof from Google Earth.

There was no pressure and no underhand sales tactics (unlike other salesmen). He clearly knew his stuff.

The survey he did was very factual (no over-promising), and did his best to find ways to maximise the number of panels.

He was also extremely patient in answering all my questions.
It was a real pleasure to deal with him. He genuinely listened to my requests and where possible made them happen.

The Carbon Saving group were very flexible to my needs, and true to their word and beat others on price.

The panels and battery were installed in a day, and within weeks of agreeing. The installation team were good as well.

I'm extremely pleased with the installation and quality of everything.

I'm looking forward now to reducing my energy bills.

February 17, 2026
Unprompted review
Carbon Saving Group logo

Reply from Carbon Saving Group

Thank you so much for your valued review Jamie it really helps customers to see the service we provide. Many thanks

Rated 5 out of 5 stars

No hard sell

Callum came to my property and worked to try to find the best battery solution for my ( non standard) solar array. Very informative/ no hard sell/ genuine customer centred advice.

February 5, 2026
Unprompted review
Carbon Saving Group logo

Reply from Carbon Saving Group

Thank you for your honest review Chris

Rated 5 out of 5 stars

Excellent service

Excellent service, prompt, clear communication, well organised and the software is easy to monitor so I can see how the panels are doing. I highly recommend Carbon Savings Group

January 15, 2026
Unprompted review
Carbon Saving Group logo

Reply from Carbon Saving Group

Thank you for your review Eleanor we really appreciate you taking the time to write this review.

Rated 5 out of 5 stars

Excellent Professional Salesman - Callum Kerr

I, like many other people, saw a piece about 'free solar power installations' based on what transpired to be false promises. However, one of the many contacts I received was from Callum Kerr and he explained the problem about the false promises (designed to collect data then made availble to a range of solar energy installers), did not pressure me (unlike some of the other responses I received) but delivered three preliminary options based upon our dialogue. Based upon his valued input I did not go ahead with any supplier but were I to change my mind - he would be the person I would call.

August 29, 2025
Unprompted review
Carbon Saving Group logo

Reply from Carbon Saving Group

Thank you for your honest review William we really appreciate it so that future customer can see we are true to our word.

Rated 5 out of 5 stars

Extra battery installation

Engineer turn up on time with all equipment and install in hours. Ran me through all settings on computer and was happy with advise. Very happy with price and work.

October 6, 2025
Unprompted review
Carbon Saving Group logo

Reply from Carbon Saving Group

Thank you so much for your review, we are pleased that your new system was installed and working as you hoped.

Rated 1 out of 5 stars

Underperforming System and Unreliable suport

I regret choosing Carbon Saving Group for my PV system. Not only has the system underperformed from the start, but the installation wasn't even completed on the day. They forgot to install the earthing rod, and I had to chase them afterwards to come back and finish the job - something that should never happen with a professional installer.
Support since then has been just as frustrating. They respond to emails when they feel like it, and when they do there is no urgency or meaningful help.
This company might be fast to take your money, but their aftercare is poor, communication is inconsistent, and they clearly don't prioritise customer satisfaction once the install is done.
Carbon Saving Group talks a good game but in reality, you're left with an incomplete, underperforming system which you paid thousands of pounds for, and a company that doesn't stand by its work. Very dissapointing.

May 19, 2025
Unprompted review
Carbon Saving Group logo

Reply from Carbon Saving Group

Thank you for taking the time to share your feedback. We’re always working to improve our customer service, and your comments have been noted and shared with the team.
We’ve begun additional training focused on improving communication, including using phone and WhatsApp where appropriate, rather than relying solely on email.
I understand your disappointment with NAPIT’s decision not to uphold your complaint. We work closely with our accreditation bodies and, in this case, they concluded that the service provided was in line with industry standards. That said, we’ve all taken learnings from this experience and are committed to doing better.

Rated 5 out of 5 stars

Was recommended to use them

Was recommended to use them, loads better than more expensive national company. Prompt fitting when we decided to use them. Really good follow up, especially with finding better tariff - thanks Callum!

October 2, 2025
Unprompted review
Carbon Saving Group logo

Reply from Carbon Saving Group

Thank you for your review including the team its really appreciated and we hope you enjoy your new Solar PV system

Rated 5 out of 5 stars

Great service from star to finish

Great service from star to finish. Callum’s determination to get the quotes as competitive as possible.
Kathryn, overall managing of the installation.
Most importantly Neil’s actual installation and setting up of the solar system.
Faultless
Once again thank you.👍

August 6, 2025
Unprompted review
Carbon Saving Group logo

Reply from Carbon Saving Group

Thank you for your personal review, it is really appreciated that you took the time to provide this feedback

Rated 5 out of 5 stars

Just had carbon saving group round to…

Just had carbon saving group round to fit solar very happy all the team were friendly Tom the surveyor explained everything we needed to know , help us pick the right system , there were so many to chose from, the installers were all great finished on time and in the rain thanks guys great team work would highly recommend.

March 12, 2025
Unprompted review
Carbon Saving Group logo

Reply from Carbon Saving Group

Thank you Jordan this is much appreciated and fed back to the team 👍🏻

Rated 5 out of 5 stars

This process was really easy as Sunny…

This process was really easy as Sunny was very helpful and explained everything so as I could understand. Sunny is very informative and considerate with my non existent computer skills. Thank you.

March 3, 2025
Unprompted review
Carbon Saving Group logo

Reply from Carbon Saving Group

Thank you Jennifer

Rated 5 out of 5 stars

Amazing carbon energy.

I recently had the pleasure of dealing with carbon energy,they came to my house to install a heat pump and a hot water system.from the outset all the staff I dealt with were kind,knowledgeable, professional and ,best of all for myself,human being who would do anything to help.from first to last they answered all my questions honestly and made sure I was informed with the whole process.thank you so much to ALL the staff.i would recommend them above any other company in this sector.again thank you.

February 3, 2025
Unprompted review
Carbon Saving Group logo

Reply from Carbon Saving Group

Thank you Billy

Rated 5 out of 5 stars

very pleased to work with

I recently had the pleasure of working with Ryan and his partner from Carbon Saver for the installation of a heat pump hot water unit at my home on 19/02/2025. I cannot express enough how impressed I am with their professionalism, expertise, and the overall service provided.

From the initial consultation to the final handover, Ryan was a delight to deal with. He was incredibly knowledgeable about the different options available and took the time to explain the benefits of the heat pump system in detail. His partner was equally skilled and they both worked seamlessly as a team.

The installation process was smooth and efficient. They arrived on time, were respectful of my property, and cleaned up after themselves once the job was done. Their attention to detail and the quality of their workmanship is evident in the seamless operation of the new heat pump hot water unit.

Ryan’s communication throughout the process was excellent. He kept me informed every step of the way and was always quick to respond to any questions or concerns I had. It’s clear that customer satisfaction is a top priority for them.

I highly recommend Ryan and his partner at Carbon Saver for anyone considering installing a heat pump hot water unit. Their expertise, reliability, and friendly service make them stand out in the industry. Thank you, Ryan and team, for a job well done!

February 19, 2025
Unprompted review
Rated 1 out of 5 stars

very poor after sales

very poor after sales. System doesn`t even do my hot water. I wasn`t shown how it works. Only got a few texts when i asked about it. Waste of money was actually June 23 just given up with the whole thing

February 11, 2024
Unprompted review
Rated 5 out of 5 stars

I had carbon saving group to extract my…

I had carbon saving group to extract my fibre wall insulation. My whole experience with the company has been exemplary from start to finish. They sent someone around really quickly to assess the job and give me a quote and it was all done within 6/7 weeks.
Very professional people.

February 3, 2025
Unprompted review
Carbon Saving Group logo

Reply from Carbon Saving Group

Thank you Phillipa

Rated 5 out of 5 stars

Mark was fantastic to deal with from…

Mark was fantastic to deal with from the process of purchase to installation of our heat pump.
Very Proffessional and followed up after installion to ask how everything went.
Thanks Carbon savers great experience

Regards
Gary

December 23, 2024
Unprompted review
Carbon Saving Group logo

Reply from Carbon Saving Group

Thank you

Rated 5 out of 5 stars

Solar panels

Although I haven't yet decided whether to have solar oanels installed, I found Callum to be extremely helpful and knowledgeable. He gave me several options to consider, showed me all the configurations and also advised me about my electricity tariff. I would recommend anyone to have a chat with him if you are considering this sort of system. Absolutely no pressure to buy and will only follow up if asked to do so, so no unwanted calls.

December 9, 2024
Unprompted review
Carbon Saving Group logo

Reply from Carbon Saving Group

Thank you for your feedback

Rated 5 out of 5 stars

Rapid response

From the outset, James was very helpful in guiding me through my requirements in a heat pump hot water system. My old system completely failed and cold showers exacerbated by health problems. The team prioritised my solar rebate (a big shout-out to James who got the ball rolling) and installation. The new system was installed by friendly qualified tradesmen. Nothing seemed too much trouble, and my old bones are very grateful for the rapid response.

November 13, 2024
Unprompted review
Carbon Saving Group logo

Reply from Carbon Saving Group

Thank you for your review!!!

Rated 5 out of 5 stars

Really good customer service

Although we didn't end up proceeding with the quotation, we were really impressed by Callum during his visit. He was thorough and spent a lot of time talking us through the plans and options available.

October 25, 2024
Unprompted review
Carbon Saving Group logo

Reply from Carbon Saving Group

Thank you for the feedback

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