Eco4 energy saving Reviews 

115
•
TrustScore 4.5 out of 5

4.7

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Review summary

Created with AI, based on recent reviews

Looking at 42 reviews, reviewers overwhelmingly had a great experience with this company. Customers consistently appreciate the highly efficient service and dedicated professional staff who handle home installations quickly, cleanly, and smoothly from the initial application to final completion. People frequently mention how supportive, polite, and knowledgeable the team is throughout the entire grant application process and subsequent property setup. Though some customers noted issues with installation quality, including messy work areas, debris left behind, or unexpected service delays. A few reviewers also experienced communication gaps regarding follow-up queries, unresolved problems, or temporary disruptions to essential household supplies.

What people talk about most

Service

Reviewers highlight positive aspects of service, frequently praising the fast and efficient installation of... See more

Staff

Clients share satisfaction on staff, praising the team for being very nice and helpful throughout the... See more

Customer service

Customers had positive experiences with customer service, frequently praising certain staff members for being... See more

User experience

Consumers find user experience to be a fantastic experience from start to finish. Reviewers highlighted that... See more

Reviews shaping this summary

Rated 5 out of 5 stars

Amazing and helpful company. The application process was easy and fast. Great communication and quick responses to all my enquiries. My little one and I used to live in a freezing cold flat with... See more

Company replied

Rated 5 out of 5 stars

I experienced excellant service, the boiler, radiators valves and electronic thermostat was fitted along with roof insulation, trickle vents and 2 extracter fans with a couple of weeks of apply for th... See more

Rated 5 out of 5 stars

From start to finish we had excellent service, very little mess considering the work we had done. Connor was our go to guy when we had any questions and he helped us through the whole process.

Rated 5 out of 5 stars

This post is in relation to a grant allowing free energy saving improvements to a rented property. I dealt with Slater at the company who was outstanding. I was contacted for all the evidential paperw... See more


Company details

  1. Solar Energy Company

Written by the company

Apply today to have your old & inefficient boiler replaced for FREE. Many people now qualify for free Boiler Grants under the 2023 Government’s ECO scheme.


Contact info

4.7

Excellent

TrustScore 4.5 out of 5

115 reviews

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1-star

No recent history of asking for reviews

This company hasn't invited customers recently, so reviews may not be representative

Replied to 50% of negative reviews

Typically replies within 24 hours

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4.7

All reviews

(115)

42 reviews in the last 12 months

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Companies on Trustpilot aren't allowed to offer incentives or pay to hide reviews. Reviews are the opinions of individual users and not of Trustpilot. Read more

Rated 5 out of 5 stars

A big thank you to ECO 4 for the…

A big thank you to ECO 4 for the support and advice and helping me upgrade our heating system an amazing customer service thanks to Ozzy and Connor for ensuring a smooth process from the initial surveys and all the way thru to the installation of our new heating system everything was smooth and promptly completed

10 December 2025
Unprompted review
Rated 5 out of 5 stars

Warm Happy Bunny

Many thanks to Slater, Harris and all the rest of the team for both negotiating the grant and the professionally installation of a new boiler and upgraded loft insulation.
I am now a warm Happy Bunny.
Thank You

27 November 2025
Unprompted review
Rated 5 out of 5 stars

Amazing and helpful company

Amazing and helpful company.
The application process was easy and fast. Great communication and quick responses to all my enquiries. My little one and I used to live in a freezing cold flat with a 40-year-old boiler and almost non-existent insulation. Eco4 and especially Connor, helped us to get approved for a grant. We now live in a cosy and warm place.

Thank you, Eco4, and Connor, for all your help and assistance.

3 November 2025
Unprompted review
Eco4 energy saving logo

Reply from Eco4 energy saving

Thank you so much for your wonderful feedback! We’re thrilled to hear that Connor and the team were able to help make your home cosy and warm. It’s great to know the application process was smooth and that our communication made things easier for you.

We truly appreciate your kind words and are so happy we could help improve your home comfort!

Best regards,
The ECO4 Energy Saving Team

Rated 5 out of 5 stars

Totally amazing from start to finish…

Totally amazing from start to finish very efficient very professional all the way through from application to instalation. Slater ,thank you very much for all your kindness and support.

4 October 2025
Unprompted review
Eco4 energy saving logo

Reply from Eco4 energy saving

Thank you so much for your kind words! We’re delighted to hear that everything from application to installation was smooth and professional. Slater will be thrilled to know his support and kindness made such a positive impact.

We really appreciate your feedback and recommendation!

Best regards,
The ECO4 Energy Saving Team

Rated 5 out of 5 stars

Eco4 fantastic

Got to admit when I first heard about the scheme i was very sceptical about the whole thing...sounded to good to be true. However it's been a very good experience with eco4 from the first phone call to the last installment.
Communication was excellent especially with a lady called Rachel who kept in contact throughout.
All the chaps that turned up to do the work were great not one issue.
Would highly recommend eco4 to anyone who qualifys for the scheme definitely 5 star rating

23 September 2025
Unprompted review
Eco4 energy saving logo

Reply from Eco4 energy saving

Thank you so much for your fantastic feedback! We completely understand the initial scepticism, and we’re delighted to hear that your experience with us turned out to be such a positive one. Rachel will be thrilled to know her communication and support made a real difference.

It’s great to hear that our installation team delivered excellent service from start to finish. We truly appreciate your 5-star recommendation and are so pleased we could help make your home more energy-efficient and comfortable.

Kind regards,
The ECO4 Energy Saving Team

Rated 5 out of 5 stars

Eko4 Slater did great job with my…

Eko4 Slater did great job with my tenant , required patience on access , engineers on the day were punctual and good communication, happy with result for our tenant.

17 September 2025
Unprompted review
Eco4 energy saving logo

Reply from Eco4 energy saving

Thank you for your kind review! We’re really pleased to hear that Slater and the installation team provided great communication and handled everything with patience and professionalism. It’s wonderful to know your tenant is happy with the results.

We truly appreciate your feedback and your trust in ECO4 Energy Saving.

Best regards,
The ECO4 Energy Saving Team

Rated 5 out of 5 stars

The whole process was hassle free and…

The whole process was hassle free and easy from the start. Brilliant workers whole procedure done in 4 hours. Rebecca kept in touch with me through the whole process. Very highly recommended and a brilliant scheme.

11 September 2025
Unprompted review
Eco4 energy saving logo

Reply from Eco4 energy saving

Thank you for your wonderful feedback! We’re so pleased to hear that the whole process was smooth and hassle-free for you. Rebecca will be delighted to know her support and communication made everything easier.

It’s fantastic that the installation was completed efficiently and to your satisfaction. We truly appreciate your kind words and recommendation!

Best regards,
The ECO4 Energy Saving Team

Rated 5 out of 5 stars

I am so very greatful to Rebecca for…

I am so very greatful to Rebecca for her assistance with my install of eco4 grants loft insulation, trickle vents extractor fans and new combi boiler. Very professional service and great communication through out. The workmen were clean polite and very efficient. Can't thank them all enough.

11 September 2025
Unprompted review
Eco4 energy saving logo

Reply from Eco4 energy saving

Thank you so much for your kind words! We’re delighted to hear that you’re pleased with your new installations and that everything went smoothly. Rebecca will be so happy to know her support made the process easy and stress-free for you.

It’s great to hear our installation team provided a clean, polite, and efficient service. we’ll be sure to pass on your appreciation to everyone involved. Thank you again for choosing ECO4 Energy Saving!

Best regards,
The ECO4 Energy Saving Team

Rated 5 out of 5 stars

They were amazing from start to finish…

They were amazing from start to finish very professional and explained everything to me
Stayed in contact and would highly recommend this service I am over the moon thank you , Connor was fab and Harris they are a really genuine / people / company and I felt safe with the whole team I would recommend them to everyone

8 September 2025
Unprompted review
Eco4 energy saving logo

Reply from Eco4 energy saving

Thank you so much for your lovely review! We’re delighted to hear that you felt supported and informed throughout the whole process. Connor and Harris will be so pleased to know their efforts made such a positive impression. It means a lot to us that you felt comfortable and confident with our team that’s exactly the experience we aim to provide for every customer. We truly appreciate your kind words and recommendation!

Rated 5 out of 5 stars

Quick easy and efficient.

Quick easy and efficient.
Connor initially made contact and explained fully what was required and helped giving support and always in contact to ensure everything was correct. Harris was the second person to assist and both were very supportive and ensured everthying ran smoothly.

8 August 2025
Unprompted review
Eco4 energy saving logo

Reply from Eco4 energy saving

Thank you for your kind review! We’re so pleased to hear that Connor and Harris provided clear guidance and support throughout the process. Our team always aims to make everything as straightforward and stress-free as possible, and it’s great to know everything ran smoothly for you.

We’ll be sure to pass on your kind words to both of them — they’ll be delighted to hear your feedback.

Best regards,
The ECO4 Energy Saving Team

Rated 5 out of 5 stars

I spoke to Connor who was very helpful…

I spoke to Connor who was very helpful and polite. He definitely got the wheels in motion very quickly. I was amazed how simple it all was obviously these people have great contacts absolutely ecstatic with how it all materialised.
Thank you to this great company ECO4 energy saving

10 July 2025
Unprompted review
Eco4 energy saving logo

Reply from Eco4 energy saving

Thank you so much for your wonderful feedback! We’re delighted to hear that Connor was able to assist you promptly and make the process smooth and straightforward. It’s great to know you’re so pleased with how everything came together. We truly appreciate your kind words and your support for ECO4 Energy Saving!

Rated 5 out of 5 stars

Call handler rebecca amazing

Call handler rebecca amazing. To fabulous installation team Muhammad and team. Amazing experience. Thank you from the bottom of my heart. You have no idea how much I appreciate everything. Thanks

28 July 2025
Unprompted review
Eco4 energy saving logo

Reply from Eco4 energy saving

Thank you for your feedback and the 5 Star review.

Rated 5 out of 5 stars

Eco4 energy saving

Eco4 energy saving

Dear Sirs,
I would like to thank you and your company on behalf of myself and my wife for sorting out the grant to exchange our 40year old gas boiler.
The guys you sent to us where extremely polite and carried out their work in a very professional manner. Clearing up all the mess and leaving our home spotless.
We cannot believe the difference in savings, as our old boiler was costing us approx £3.50 a day just to have 2hours of hot water. The new boiler is £0.81 and hot water at the turn of a tap. It would take us 20mins plus to fill a bath and now just a couple of minutes. Having to give up work as a construction director due to I’ll health this was one of our biggest outlay in costs and worry as our old boiler was so expensive to run we couldn’t use the central heating.
We thank you so much for what you have done for us and sending such wonderful tradesmen.
Yours faithfully
Gary and Julie

19 July 2025
Unprompted review
Eco4 energy saving logo

Reply from Eco4 energy saving

Thank you so much for taking the time to share such a thoughtful and detailed review. We’re absolutely delighted to hear that your new boiler has made such a positive difference to your home and energy costs. It’s wonderful to know our team provided a professional and tidy service — we’ll be sure to pass your kind words on to them.

We understand how important reliable heating and hot water are, and we’re truly glad we could help make things easier and more affordable for you both. Thank you once again for choosing ECO4 Energy Saving, and we wish you continued comfort and savings for many years to come.

Kind regards,
The ECO4 Energy Saving Team

Rated 5 out of 5 stars

Excellent service from Connor and his team

I was very impressed with Connor and his team. They all worked extremely hard and were a pleasure to meet and deal with. Connor co-ordinated everything superbly and kept me fully updated throughout the whole process. The team that undertook the works arrived punctually and completed all of the works without any issues or delay.

27 June 2025
Unprompted review
Eco4 energy saving logo

Reply from Eco4 energy saving

Thank you for your feedback and the 5 Star review.

Rated 5 out of 5 stars

Absolutely fantasitic

Absolutely fantasitic. Big job but kept it very clean. Trustworthy and reliable. Connor was fab sorting this out for me.
Thank you

3 July 2025
Unprompted review
Eco4 energy saving logo

Reply from Eco4 energy saving

Thank you for your feedback and the 5 Star review.

Rated 4 out of 5 stars

It was a bigger job than l first…

It was a bigger job than l first thought, but now it’s all done, l am very happy. Obviously l haven’t had the heating on yet with the warm weather, but it tested well. l still can’t not believe it was all free, so for me it was well worth the upset. Any issues or worries l had was dealt with by the representative Joe Taylor most efficiently,which gave me confidence in the programe

17 June 2025
Unprompted review
Eco4 energy saving logo

Reply from Eco4 energy saving

Thank you for your feedback and the 5 Star review.

Rated 5 out of 5 stars

If you are eligible for Eco4 grant then do it!

I contacted Eco4 after finding them on Google, they got back to me the next day (Saturday) and arranged a survey for Monday. The survey confirmed our eligibility for loft insulation and a replacement combi boiler, and the install was conducted by an approved partner the following Monday and Tuesday. Eco4 liaised with us throughout the process and were helpful and informative. To be honest I was very sceptical that I would get completely free insulation let alone a replacement boiler, and have to pinch myself to believe it is true, as we have only owned to house for a couple of weeks! If you are eligible then do not hesitate to proceed with Eco4. Thanks guys!

9 June 2025
Unprompted review
Eco4 energy saving logo

Reply from Eco4 energy saving

Thank you so much for sharing your experience! We’re thrilled to hear that everything went smoothly from your first enquiry through to installation. It’s great to know our team kept you informed and that you’re happy with your new boiler and insulation. We completely understand the initial skepticism. it’s always nice to see how pleasantly surprised our customers are once everything is complete!

We really appreciate your recommendation and are so glad we could help make your new home more energy-efficient and comfortable.

Best regards,
The ECO4 Energy Saving Team

Rated 5 out of 5 stars

Excellent company

Excellent company. Slater guided us through the application carefully. Very friendly and professional. When it came to the installation. The installers were quick, no mess and friendly. I have no hesitation in recommending this company.

13 June 2025
Unprompted review
Eco4 energy saving logo

Reply from Eco4 energy saving

Thank you for your feedback and the 5 Star review.

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