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

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

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

How this company uses Trustpilot

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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

Always kept me informed and upto date

Always kept me informed and upto date, great professional service and care, thank you.

2 August 2026
Unprompted review
HIES logo

Reply from HIES

Hi there. We’re pleased to hear that you have received professional service and care. Thank you for leaving a positive review. Kind regards, HIES.

Rated 5 out of 5 stars

The team allocated my job were 1st…

The team allocated my job were 1st class nothing was too much trouble they were neat and tidy and very professional

1 July 2026
Unprompted review
HIES logo

Reply from HIES

Good morning, Chris. We’re thrilled to hear that your installers have been first class. Thank you for leaving a review. Kind regards, HIES.

Rated 5 out of 5 stars

Clear and timely communication…

Clear and timely communication explaining the process

31 July 2026
Unprompted review
HIES logo

Reply from HIES

Good morning, Gerry. Thank you for leaving a review. We’re pleased to hear that your installers have been clear and timely with their communication. Kind regards, HIES.

Rated 5 out of 5 stars

Professional performance

HIES have performed their role in the background giving us information when required and leaving us assured

31 July 2026
Unprompted review
HIES logo

Reply from HIES

Good morning, Paul. We’re delighted to hear that we have left you feeling assured. Thank you for taking the time to leave a positive review. Kind regards, HIES.

Rated 1 out of 5 stars

Absolutely useless

Absolutely useless. Not at all interested in undertaking more than a cursory assessment of my situation, ignoring their own code of conduct, and clearly biased towards Octopus. They provide a veneer of consumer protection that is hollow is practice.

28 July 2026
Unprompted review
HIES logo

Reply from HIES

Hi Johnny, we’re sorry to hear about your negative review. After reviewing the case, we believe that we provided support throughout the process. HIES is committed to treating all parties fairly and in line with our Code of Practice. If you would like to discuss this further, please contact us on 0344 324 5242 or email info@hies.org.uk. Kind regards, HIES.

Rated 5 out of 5 stars

solar panels

very good service and no complaints with them

12 March 2026
Unprompted review
HIES logo

Reply from HIES

Good morning, Kevin. Thank you for leaving a positive review. We’re delighted to hear that you received a very good service. Kind regards, HIES.

Rated 5 out of 5 stars

Really professional and brilliant…

Really professional and brilliant workmanship . Full experience was really smooth

15 June 2026
Unprompted review
HIES logo

Reply from HIES

Good morning, Adam. We’re thrilled to hear that your experience has been really smooth. Thank you for taking the time to leave a review. Kind regards, HIES.

Rated 5 out of 5 stars

Great company

Great company

28 July 2026
Unprompted review
HIES logo

Reply from HIES

Good morning. 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

Information was given freely and was…

Information was given freely and was patient with all my questions which were many .. very professional and polite . Clean and tidy after job done .. and at the end of the phone if needed .. 5*

23 June 2026
Unprompted review
HIES logo

Reply from HIES

Good morning, Greg. Thank you for leaving a review. We’re pleased to hear that your installers were very professional and polite. Kind regards, HIES.

Rated 1 out of 5 stars

Utterly worthless 'assurance'

In our case they proved utterly useless. Their member company (EDF Contact-Solar) ignored the HIES code of conduct apparently without consequences.
They only agreed to investigate our 'allegations' IN SECRET after considerable prodding on our part.
They appeared to be there for their members not the end user of the solar system.
We are left to conclude that HIES does not provide the ASSURANCE that they and their members advertise.

2 July 2026
Unprompted review
HIES logo

Reply from HIES

Hi there, we’re sorry to see your 1-star review. We take all feedback seriously and would welcome the opportunity to address any concerns you may have. HIES is committed to treating all parties fairly and in line with our Code of Practice. If you would like to discuss this further, please contact us on 0344 324 5242 or email info@hies.org.uk. Kind regards, HIES.

Rated 5 out of 5 stars

Heat Pump Installation Management

HIES made sure our heat pump was correctly installed to a high standard, keeping us informed and working seamlessly with Octopus Energy. Afterwards sending us all appropriate paperwork and advising us on next steps if anything was needed.

24 June 2026
Unprompted review
HIES logo

Reply from HIES

Good morning, Ewen. Thank you for leaving a positive review. We’re pleased to hear that everything has gone seamlessly. Kind regards, HIES.

Rated 5 out of 5 stars

Made the whole process effortless &…

Made the whole process effortless & stress free, I would 100% recommend to anyone. Every staff member we dealt with was polite & professional.

27 July 2026
Unprompted review
HIES logo

Reply from HIES

Hi there, Peter. Thank you for leaving a review. We’re delighted to hear that the whole process was effortless and stress-free. Kind regards, HIES.

Rated 5 out of 5 stars

All very good

All veey good

23 June 2026
Unprompted review
HIES logo

Reply from HIES

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

Rated 3 out of 5 stars

The Tesla product does what we want

The Tesla product does what we want. Octopus have a well defined process for installation with, in principle, one point of contact before sales, and one project manager for implementation. The potential is v good. Unfortunately, numerous little problems spoilt the implementation. It took over 8 months to install the battery storage, I had to pay nearly £4k more for new EV chargers I did not need, and some aspects I had to project manage due to the PM not being trained in all aspects. Having said this, the product is good and we are saving money.

25 June 2026
Unprompted review
HIES logo

Reply from HIES

Good morning, Paul. Thank you for leaving a review. We’re pleased to hear that the product is performing well and helping you save money. Kind regards, HIES.

Rated 5 out of 5 stars

Fabulous company

Fabulous company - totally customer driven unlike most companies that talk the talk but never walk the walk!

1 May 2026
Unprompted review
HIES logo

Reply from HIES

Good morning, Robert. Thank you for leaving a review. We’re thrilled to hear that your installers have been fabulous. Kind regards, HIES.

Rated 5 out of 5 stars

I did not realise I needed this…

I did not realise I needed this insurance but I am glad I had it. They covered the Installer and now cover my system installation. Excellent!

12 June 2026
Unprompted review
HIES logo

Reply from HIES

Good morning, Stephen. We’re delighted to hear that you think HIES is excellent. Thank you for leaving a review. Kind regards, HIES.

Rated 5 out of 5 stars

Very straightforward

Very straightforward

25 July 2026
Unprompted review
HIES logo

Reply from HIES

Good morning, Mark. Thank you for taking the time to leave a review. We’re pleased to hear that everything has been straightforward. Kind regards, HIES.

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