HIES Reviews 

1,389
•
TrustScore 5 out of 5

4.8

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Review summary

Created with AI, based on recent reviews

Considering 471 reviews, reviewers overwhelmingly had a great experience with this company. Customers frequently praise the staff for their exceptional professionalism and technical knowledge, noting that installations are handled smoothly, cleanly, and efficiently from start to finish. Many people also appreciate the clear communication, helpful guidance, and ongoing reassurance provided throughout the entire process by the dedicated team. However, some customers also noted significant issues with dispute resolution and perceived a lack of proper consumer safeguards or support from the organization. A few other people also felt that certain projects suffered from frustrating delays, unexpected extra costs, or poor handling by the management during implementation.

What people talk about most

Service

Reviewers highlight positive aspects of service, noting that installations were carried out smoothly and... See more

Staff

Consumers find staff to be exceptionally helpful, professional, and knowledgeable throughout the entire... See more

User experience

Reviewers mention positive feedback about user experience, noting that the whole process was very smooth and... See more

Customer service

Customers consistently note positive experiences with customer service, highlighting professional, responsive... See more

Product

Users describe positive interactions with product, expressing great satisfaction with the performance and... See more

Reviews shaping this summary

Rated 5 out of 5 stars

Politeness of the guys whilst working for two days at our house (David, Lee & Davy) plus electrician Mike who also spend the second full day working here. Very professional job carried by a well exp... See more

Company replied

Rated 5 out of 5 stars

I had already had a some quotes from other solar companies, and I almost went with another company, a dear friend and colleague passed me details for this company, really pleased I did, Andrew and... See more

Company replied

Rated 5 out of 5 stars

Solar is a big investment with a slow return - Optimising is important and also having the assurance, just in case something goes wrong. HIES gives you that assurance and ensures compliance with stan... See more

Company replied

Rated 5 out of 5 stars

From start to finish Aira were great, especially the everyone that completed the install. Very professional, neat and tidy work. Everything arrived on the morningnof fitting, with the fitters arriving... See more

Company replied


Company details

Written by the company

HIES is committed to the highest standards in consumer protection for the home energy sector. Through our Chartered Trading Standards Institute (CTSI) approved Consumer Code and Alternative Dispute Resolution (ADR) service, we promote fairness, accountability, and protection for both homeowners and installers.


Contact info

4.8

Excellent

TrustScore 5 out of 5

1k reviews

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Asks customers to review

This company invites their customers to review, whether positive or negative

Replied to 100% of negative reviews

Typically replies within 1 week

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4.8

All reviews

(1,389)

460 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

As it should be….

For once, a trade association that monitors its members and reaches out to check they have performed as expected.

A worthy ‘ticket to trade’

Thank you.

1 July 2026
Unprompted review
HIES logo

Reply from HIES

Hi there. Thank you for taking the time to leave a 5-star review - we really appreciate it. Kind regards, HIES.

Rated 5 out of 5 stars

UK Energi - Cannot recommend them enough

I cannot recommend UK Energi highly enough. The whole solar and battery installation process was seamless and timely. All the team are professional and they communicate well. Thank you for your work!

23 June 2026
Unprompted review
HIES logo

Reply from HIES

Good morning, James. We’re pleased to hear that your installers, UK Energi, were professional. Thank you for leaving a review. Kind regards, HIES.

Rated 5 out of 5 stars

Should have gotten solar earlier, don't wait any longer!

From quote to installation took about a month. Other providers were giving me install dates 3 or more months ahead. The package was tailored for my residence and I have no regrets. Slight issue with the 3rd party scaffolding company not coming on various stated removal dates, nothing to do with Infinity directly. Panels are working better than expected and you'll just have to be patient to get the paperwork sorted and your MPAN/DNO resolved ( again by your provider/3rd party) so you can start exporting and getting additional revenue to offset your layout. Finally, the price at the time was great , the staff at infinity were helpful, the installers were chill and professional. I would recommend them to anyone.

22 April 2026
Unprompted review
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Reply from HIES

Good morning. We’re thrilled to hear that your installers were professional and that you would recommend them. Thank you for leaving a review. Kind regards, HIES.

Rated 5 out of 5 stars

HIES: An extremely professional supplier and installer

HIES are extremely professional. No nonsense salesmanship. A bespoke solution for our circumstances and budget. Supplied the products we wanted and the installation was completed quickly, without damage or mess and in the minimum timescale. the system is already saving us 99% on our electricity bills and we are intending to convert our water central heating to their electric radiator versions in stages, Sales, installers and support service staff are well trained and experienced and do a really first class job for you. Excellent warranty on products

24 July 2026
Unprompted review
HIES logo

Reply from HIES

Good morning, Roger. Thank you for taking the time to leave a 5-star review - we really appreciate it. Kind regards, HIES.

Rated 4 out of 5 stars

Great deal…

I found the process and installation reasonably trouble free. Benefits day 1 on taking it closer to self sufficiency.
My only ongoing issue is obtaining a Gen2 meter to allow to sell back energy to the grid…(not directly related to the installation/providers of my solution).
Overall a good deal and on budget.
Thanks

23 July 2026
Unprompted review
HIES logo

Reply from HIES

Good morning, Stuart. Thank you for leaving a review. We’re pleased to hear that your installation has been reasonably trouble-free. Kind regards, HIES.

Rated 5 out of 5 stars

Great work


Great work
appointment on time comprehensive explanation and thorough installation and advice

15 June 2026
Unprompted review
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Reply from HIES

Good morning, Adlan. Thank you for taking the time to leave a review. We’re pleased to hear that you’re happy with your installation. Kind regards, HIES.

Rated 5 out of 5 stars

They use there own Installers

they used there own installers,only a small deposit was required.this all come with long guarantee and were friendly on the phone.all done in a day ...nice

29 June 2026
Unprompted review
HIES logo

Reply from HIES

Good morning, Martyn. We’re thrilled to hear that your installers were friendly. Thank you for leaving a review. Kind regards, HIES.

Rated 5 out of 5 stars

Solar Therm (solar panels)

If Solar Therm was a football team then they would definitely be in the Premier league

19 June 2026
Unprompted review
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Reply from HIES

Good morning, Andrew. Thank you for your positive feedback. We’re pleased to hear about your positive experience with your installer. Kind regards, HIES.

Rated 5 out of 5 stars

HEIS gave piece of mind to the installation process

HEIS gave piece of mind to the installation process (and beyond), and combined with my installer, all documents and updates were received in a timely fashion giving me further confidence things were being executed properly. They seem much more useful than FENSA and organisations like that in the past where guarantees seemingly meant nothing.

20 June 2026
Unprompted review
HIES logo

Reply from HIES

Hi there, Eric. We’re thrilled to hear that we’ve provided you with peace of mind. Thank you for leaving a positive review. Kind regards, HIES.

Rated 5 out of 5 stars

Professional service and no complaints

Professional service and no complaints

19 July 2026
Unprompted review
HIES logo

Reply from HIES

Good afternoon, Paul. Thank you for taking the time to leave a review. We’re happy to hear that your installers provided a professional service. Kind regards, HIES.

Rated 5 out of 5 stars

HIES an unexpected bonus

When I had my heat pump installed HIES was an added bonus I had no knowledge of. In fact if they hadn’t been so proactive I probably wouldn’t have realised they were involved at all. However it became clear they’d insured my deposit and then emailed me to say that, on completion, they offered to extend that to cover the installer going bust and prompted me to contact my installer when they hadn’t received the information they required to extend that insurance. Both surprised and very happy to have them on board

12 May 2026
Unprompted review
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Reply from HIES

Hi there, Jenny. We’re pleased to hear that you’re happy with HIES. Thank you for taking the time to leave a review. Kind regards, HIES.

Rated 5 out of 5 stars

My entire experience with Octopus…

My entire experience with Octopus Energy has been a dream every member of staff I spoke and dealt with were fantastic! They are all extremely knowledgeable and helped me with all my random questions. The installation of our heat pump is an engineering work of art!

I can highly recommend Octopus Energy

3 June 2026
Unprompted review
HIES logo

Reply from HIES

Good morning, Sarah. We’re pleased to hear about your fantastic experience with Octopus Energy. Thank you for taking the time to leave a positive review. Kind regards, HIES.

Rated 5 out of 5 stars

Great work. Highly recommended.

Great communication, installation and follow-up. Easy to deal with and quality work delivered.

29 May 2026
Unprompted review
HIES logo

Reply from HIES

Good morning. Thank you for leaving a review. We’re delighted to hear that your installers were easy to deal with. Kind regards, HIES.

Rated 4 out of 5 stars

Good apart from communication

The design and information about the solar panels and battery was informative. They answered all our questions in a clear way. The only problems we had were with scheduling as no one turned up on installation day and we were not contacted. Eventually rescheduled but in retrospect I wish we had kept phoning to check things were on track. We are happy now with the finished product and at least we could speak to someone on the phone.

14 July 2026
Unprompted review
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Reply from HIES

Good morning. We’re pleased to hear that you’re happy with the finished product. Thank you for leaving a review. Kind regards, HIES.

Rated 5 out of 5 stars

From the first phone conversation,to…

From the first phone conversation,to the consultation with the person that came out to explain everything to us. Lime staff and the service was first class. I would highly recommend them to anyone thinking about installing a solar panel system.

5 May 2026
Unprompted review
HIES logo

Reply from HIES

Good afternoon, Allan. We’re pleased to hear that the service you received was first-class. Thank you for taking the time to leave a positive review. Kind regards, HIES.

Rated 5 out of 5 stars

FROM FIRST DECISION TO INSTALL SOLAR…

FROM FIRST DECISION TO INSTALL SOLAR AND CHECKING REVIEWS I CALLED SOLAR SIMPLICITY AND WAS TREATED TO A VERY POLITE CONVERSATION WITH CURTIS WHO THEN CALLED AT ADDRESS AND DISCUSSED WHAT WAS NEEDED AND THEN AGREED SOLAR PACKAGE FROM START TO COMPLETION VERY HAPPY WITH TEAM AND ALL WENT SMOOTHLY 10/10 HIGHLEY RECOMMEND

11 May 2026
Unprompted review
HIES logo

Reply from HIES

Good afternoon. We’re delighted to hear that you would highly recommend your installer. Thank you for leaving a positive review. Kind regards, HIES.

Rated 5 out of 5 stars

The whole process was slick

The whole process was slick. Competative quote and install was flawless, really very good.

13 June 2026
Unprompted review
HIES logo

Reply from HIES

Hi there. Thank you for taking the time to leave a 5-star review - we really appreciate it. Kind regards, HIES.

Rated 5 out of 5 stars

From start to finish the installation…

From start to finish the installation was seamless with minimal disruption. The scaffolding was up and down the same day, which was really impressive.

The team were friendly, professional and respectful of our property, leaving everything neat and tidy when they finished.

A great experience all round. I'd happily recommend Advanced Eco to anyone considering solar panels.

27 November 2025
Unprompted review
HIES logo

Reply from HIES

Good afternoon, Tania. Thank you for taking the time to leave a review. We’re thrilled to hear that your installation has been seamless. Kind regards, HIES.

Rated 5 out of 5 stars

They vetted Green Glow

They vetted Green Glow, provided deposit protection, and provided our installers guarantee as well as providing customer support and dispute resolution

10 June 2026
Unprompted review
HIES logo

Reply from HIES

Good morning, Ellie. Thank you for taking the time to leave a 5-star review - we really appreciate it. Kind regards, HIES.

Rated 5 out of 5 stars

No problem from start to finish

No problem from start to finish

8 June 2026
Unprompted review
HIES logo

Reply from HIES

Good morning, Raymond. Thank you for taking the time to leave a review. We’re delighted to hear that there were no problems from start to finish. Kind regards, HIES.

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