Calisen Reviews 

1,076
TrustScore 3.5 out of 5

3.7

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Review summary

Created with AI, based on recent reviews

Looking at 198 reviews, most reviewers were somewhat happy with their experience overall. Many customers praise the professionalism and helpfulness of the engineers, often highlighting their friendly and courteous demeanor. Reviewers frequently highlight their efficiency, punctuality, and ability to complete jobs quickly and without issue. Many also appreciate the clear communication from installers, including updates on arrival times and explanations of the work. However, some customers also noted significant issues with the booking process, experiencing repeated cancellations and long delays for appointments. People reported poor customer service, including a lack of communication regarding changes and rude interactions. There were also complaints about receiving excessive, repetitive reminders and difficulties with contact, such as unprofessional phone etiquette. A few people experienced problems post-installation, such as non-working meters or unactivated display panels, and even safety concerns with loose connections.

What people talk about most

Service

Customers consistently note ambiguous experiences with service, with many expressing frustration over missed... See more

Staff

Users describe positive interactions with staff, frequently highlighting their professionalism, efficiency,... See more

Customer communications

Reviewers highlight negative aspects of contact, with many customers reporting extreme difficulty reaching... See more

Booking process

Customers had negative experiences with the booking process, often reporting that appointments were cancelled... See more

Customer service

People report negative experiences with customer service, often citing awful and unprofessional interactions.... See more

Reviews shaping this summary

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

Rated 4 out of 5 stars

I've night storage heaters so I had the related meter installed. The installation guy was good. Still waiting for my Smart meter display from Ecotricity...

Company replied


3.7

Average

TrustScore 3.5 out of 5

1K reviews

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Replied to 20% of negative reviews

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3.7

All reviews

(1,076)

206 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 1 out of 5 stars

An engineer was booked in to install or…

An engineer was booked in to install or connect meter to mains weeks ago ,x1 engineer turned up very cheerful and friendly,as soon as the engineer got all his tools out and ready to connect he received a call asking him to leave my job and attend another and another engineer will be on his way,half n hour later 2nd engineer turned up realy grumpy and picky from the get go once inside the building he refused to go into basement due to top step to stairs missing which dosnt effect access to basement and refused to carry out the works for a person with an attitude of a 8 year old I don't even know how he passed his induction ,realy frustrated as have no power/ electricity at all to the building ,now have to rebook with suppliers but the amount of time n money wasted by this calisen engineer is ridiculous and I think someone in the calisen company should look into it as this engineer is wasting time and MONEY also not mentioning the reputation of calisen.

26 May 2026
Unprompted review
Rated 1 out of 5 stars

This company is a complete joke

This company is a complete joke, a sum of incompetency that can only deserve zero stars.

Four appointments in 3 months and the gas meter is still faulty.
Two visits with the wrong meter, two appointments cancelled at the end of the time window in a completely unprofessional manner.

I've nowcfiled complaints and escalated to Ofgem, asked for a penalty repayment and please all do this because Calisen is incompetent.
After 8 weeks, if the matter is unresolved, I will take with Ofgem ombudsman to the next level.

Ecotricity should change smart meter partner company, Calisen is tarnishing their brand.

11 May 2026
Unprompted review
Rated 1 out of 5 stars

NEVER HEARD OF THIS COMPANY

Someone random person just turned up, knocks on my door. Despite noone awsnering the door, would have thought he would have left and not come back. He walked off and come back again started going down my meters both electric and gas. After I mentioned am not currently at the property he left. Had no warning they was even attending. But just to going down meters is unprofessional but even more dont seem that my address was down for a job. Seems he's gone to the wrong house and not checked addresses. Very unprofessional

8 May 2026
Unprompted review
Rated 5 out of 5 stars

Abdul from Calisen came to fit a new…

Abdul from Calisen came to fit a new energy meter on behalf of Scottish power yesterday. He was very polite and efficient in his Work. Shown me how to use the Smart reader so I can see live usage stats from the meter and overall was a top guy. Would recommend.

16 April 2026
Unprompted review
Rated 1 out of 5 stars

One star is far too many

One star is far too many. Person arrived, spent all the time on his phone to a lady. Left heating on full without saying he had turned it on. Shower no longer worked. Contacted them and Scottish Power neither of which were interested. Fobbed me off with a load of rubbish saying if the lights in house were working shower would be wired correctly. They said showers run off main system which they don’t. It’s illegal. Called an independent electrician out . He stated shower wires just hanging out of box , nothing connected, and there is no way of turning power off shower, making it dangerous to use. He wouldn’t touch it for legal reasons. Now been reported to Ofgem

31 March 2026
Unprompted review
Rated 1 out of 5 stars

Unprofessional- Keep Cancelling On The Day

Timewasters. After being referred to Calisen via my gas provider for a smart meter installation they have proceeded to mess me around for the past 6 weeks.

My appointment has now been cancelled twice on the day for unforseen (imaginary) emergencies for their engineers.

Do not even have the courtesy to call on the day to let you know they are cancelling. You need to sit on hold with their customer service team only to be told they were just about to call to let you know. What a coincidence.

Next available slot is unfortunately in 2 weeks time. And then the cycle begins again...

Looking at their other reviews, definitely not an isolated incident. I'd recommend considering switching energy providers rather than relying on Calisen.

7 April 2026
Unprompted review
Rated 1 out of 5 stars

Completely unprofessional and wasting…

Completely unprofessional and wasting individuals time.

Applied for a Talent Advsior role.
Jumped through recruitment hoops including online testing.
Radio silence for two weeks to receive an email that they are
"Currently reviewing the scope and requirements of the role. As part of this process, the parameters for the position have changed significantly from what was originally advertised"

Good advice would be to know the position you need to hire for within your business, the businesses needs and stick to it.

However, I do feel like a bullet has been dodged as if this is the disorganisation and unprofessionalism of your internal recruitment team I am unsure whether I would have now wanted to be an employee associated with it!

19 March 2026
Unprompted review
Rated 5 out of 5 stars

Broken meter

Have not been able to submit readings for 5months switched provider and they sent calisen out to fit a new gas meter within 2 weeks of me being with them.

Ryan came fitted my meter and was very respectful. I know there are some painful thing with my house and one was him not being able to get the gas to speak to the sender with the electric.. however i have been submiting manually for over 9 years so it didnt phase me. Just having a working meter filled me with happiness after a stressful cold xmas and couple of months as a budgetted household. Thank you ryan and thank you calisen top tier

10 March 2026
Unprompted review
Rated 1 out of 5 stars

Meter reader man verbally rude

Meter reader man turned up unannounced, tried to pressure me into letting him in and was very rude when told it wasnt convenient to read our business smart meter. I requested that an appointment was prearranged in future. He was very agitated and sarcastic in response.

5 March 2026
Unprompted review
Rated 1 out of 5 stars

Would have given no stars had that been an option

Would have given no stars if that was possible. Having been badgered by my utility provider for a number of years to have a smart meter installed , I agreed and a date was set for 7 January. Late in the afternoon of 6th I received a call to say that "due to unforseen circumstances" they were unable to keep the appointment. It was rebooked for 18th February - no priority given for having cancelled. I received a number of reminders about the appointment the last one being on 17th February. Later in the day I recieved another email saying "Great news, your installation appoinement is booked for 10 April". I contacted my provider who conformed that the appointment had been cancelled. Following two lengthy conversations with the provider, they were unable to resolve the issue with Calisens. Calisens claimed to have attempted to call me and then left a text message, needless to say this was untrue. Phone working normally, no missed calls and no text message. No explanation as to why the appointment was cancelled and not able to attend for another 8 weeks. There is no priority for customers that have been let down & no consideration for people having to make arrangements to facilitate these random appointments. Like many reviewers on here, I am baffled as to why my provider is still dealing with them. The service is appalling

18 February 2026
Unprompted review
Rated 1 out of 5 stars

I can only respond on behalf of my 83…

I can only respond on behalf of my 83 year old Mum, a meter reader took a reading a few months ago he told her that the meter was outdated and would need replaced and he placed a call to another team and got my mum to verify her id and booked a replacement for this February, I advised her that it would be replaced with a SMART meter which she didn't want, as, in my opinion the meter reader was not qualified to make that technical comment, I subsequently cancelled the appointment on my Mum's behalf only to be asked why, told them my Mum does not want a SMART meter until it becomes mandatory. So is Scottish Power et al using this company to carry out meter readings and trying to ply customers to change to SMART meters? I think so.

6 October 2025
Unprompted review
Rated 1 out of 5 stars

Absolutely wasting you time waiting in for them!

Just had a very last minute cancellation by the engineer advising that they didnt have stock of what was required to change my meters to smart meters. I'm sorry but all they do is change peoples meters to smart meters so how can they not have stock on there van! They must have known how many jobs they had for the day so why didn't they message me in the morning. Then at least i wouldn't have wasted a day waiting in! Absolutely terrible service and total disregard to people's valuable time.

29 January 2026
Unprompted review

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