Calisen Reviews 

1,094
TrustScore 3.5 out of 5

3.7

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Review summary

Created with AI, based on recent reviews

Considering 227 reviews, most reviewers were somewhat happy with their experience overall. Customers frequently commend the engineers for their professionalism, efficiency, and helpfulness during installations. Many appreciate that staff arrive on time, explain the process clearly, and ensure the work area is left tidy. However, some people were dissatisfied with communication and the booking process, noting a lack of contact for appointments, unexpected cancellations, or re-scheduling issues. Problems with customer service were also mentioned. A few customers reported engineers arriving without necessary parts or installations leading to subsequent issues like power loss.

What people talk about most

Service

Consumers find service to be ambiguous, with many reviewers praising engineers for being on time, polite,... See more

Staff

People report positive experiences with staff, often highlighting their professionalism, efficiency, and... See more

Customer communications

Customers had negative experiences with contact, frequently reporting difficulties reaching the company, with... See more

Customer service

Clients share ambiguous opinions on customer service, with some reviewers praising the good customer care,... See more

Booking process

Reviewers mention ambiguous feedback about the booking process, with some finding it acceptable while others... See more

Reviews shaping this summary

Rated 4 out of 5 stars

Very professional and excellent person came to do the work and asked appropriate questions about our house and explained what he needed in order to do checks, etc. So actual chaneover was carried... See more

Company replied

Rated 4 out of 5 stars

Miles, the young man who installed the meter was very helpful and answered all our questions. He let us know when he would arrive, got on with the job and was very pleasant. I would give him 5 stars... See more

Company replied

Rated 4 out of 5 stars

Engineer was on time but delayed as meter serial numbers did not tally. Installation completed quickly and without issue. The indoor monitor does not read the gas meter and is therefore of very limite... See more

Company replied

Rated 4 out of 5 stars

Your technician arrived as scheduled and completed the meter change successfully. He could have arrived informed about the installation he was replacing. This would have saved him time, taking advi... See more

Company replied


3.7

Average

TrustScore 3.5 out of 5

1K reviews

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1-star

Asks customers to review

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

Replied to 19% of negative reviews

Typically replies within 24 hours

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3.7

All reviews

(1,094)

224 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 3 out of 5 stars

Horrible interaction with the guy on the phone

Horrible interaction with the guy on the telephone who arranged the booking process. He sounded like he was was working from home with kids in the background. He sounded bored and distracted and was obviously lacking knowledge when it came to trying to answer my questions. I was left feeling angry and frustrated.
On the other hand, the guy that fitted my meter was punctual, smart, friendly, polite and efficient and displayed a pleasant personality. if the whole review was based on that alone - i would have rated 5 stars.

March 9, 2026
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Reply from Calisen

Hi - while we're delighted you were happy with the installation of the meter the feedback regarding your interaction with out contact centre team is disappointing. We will take this feedback and review.

Thanks for taking the time to leave us a review.

Rated 5 out of 5 stars

Your engineer was Excellent

Your engineer was polite, knowledgable, and keen to give the best service he could. Which he did.

June 3, 2026
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Reply from Calisen

Hi - we're delighted you were pleased with the service our engineer provided!

Rated 5 out of 5 stars

Helpful

Helpful, polite,informative. The work was tidy.

June 3, 2026
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Reply from Calisen

Hi - thanks for taking the time to leave us a review!

Rated 5 out of 5 stars

Top Work

Had to wait a little to get this appointment fixed. The worker who did the installation was great and made a real effort to fit the smart meter as requested. Really appreciated his efforts and hoe he went about the installation.

May 7, 2026
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Reply from Calisen

Hi - thanks for taking the time to leave us a positive review and calling out the workmanship of our operative!

Rated 5 out of 5 stars

At first he said the meter is old n…

At first he said the meter is old n complicated . But UW said still do it. JOSHUA was very efficient n explaining very well the situation I'm old and its very helpful that your engineer is friendly . He did the job patiently I am very please .he did the job professionally. Because of Him I will still stay in Uw .

June 10, 2026
Unprompted review
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Reply from Calisen

Hi - thanks for leaving us a review and calling out the professional job our engineer did!

Rated 5 out of 5 stars

Bradley

Bradley, the engineer did a great job, quicker than expected

June 2, 2026
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Reply from Calisen

Hi - thanks for the great feedback for Bradley and thanks for taking the time to review!

Rated 5 out of 5 stars

Great service

Great service. Electrician was very helpful.

June 9, 2026
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Reply from Calisen

Hi - we're glad you were pleased with the service!

Rated 3 out of 5 stars

Not as good as it should be.

Our smart meter was installed quickly and efficiently although only at the third attempt after the first two appointments were cancelled by Calisen with very little warning and after we had arranged to stay in (twice) to facilitate installation. After the meter was installed we received three e-mails to say that we shouldn’t contact Ecotricity as the monitoring device would be set up on their system. After a month I contacted Ecotricity to ask why it still wasn’t working and the issue was resolved the next day - clearly we had been overlooked!

June 9, 2026
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Reply from Calisen

Hi - We're sorry you experienced issues with your appointment but are pleased the installation went well when we attended.

Feedback is important to help us improve the services we offer so thank you for taking the time to leave a review.

Rated 5 out of 5 stars

The process was easy to understand

The process was easy to understand, it was completed efficiently and I had no issues with the installation.

June 8, 2026
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Reply from Calisen

Thanks for your feedback, we're pleased the installation was a success!

Rated 5 out of 5 stars

Efficient service

The booking process was easy and we were given an appointment the following week. The Engineer attended on time and was through & efficient.

June 5, 2026
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Reply from Calisen

We're glad you found the process easy! Thanks for your feedback!

Rated 4 out of 5 stars

Engineer was on time but delayed as…

Engineer was on time but delayed as meter serial numbers did not tally. Installation completed quickly and without issue. The indoor monitor does not read the gas meter and is therefore of very limited use.

June 8, 2026
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Reply from Calisen

Thanks for your feedback.

Please contact your energy supplier who should be able to remotely resolve this issue for you, if you don't get any success, please contact us at trustpilotqueries@calisen.com and one of our team will see if we can help.

Rated 1 out of 5 stars

Was long and guy didnt commission…

Was long and guy didnt commission display so cant use it fully

June 8, 2026
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Reply from Calisen

Hi - thanks for leaving us feedback, its disappointing to hear you are not able to use the new meter fully. We're sorry for the inconvenience this has caused.

Please email trustpilotqueries@calisen.com with your name and address one of our team will be in touch to see how we can help.

Rated 3 out of 5 stars

I can't fault the guys who came round

I can't fault the guys who came round . However I lost money on my meter when I transferred from a key to online top up. Now I have to prove I had money on there which I can't.

June 8, 2026
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Reply from Calisen

Hi - we're sorry to hear about the issues you've had regarding the credit on your meter.

Please email trustpilotqueries@calisen.com with your name and address and one of our team will be in touch to see how we can help.

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