Rayotec Limited

Sunbury-On-Thames4.7· 23 reviews · 2 sources
Companies House
Active incorporated business
Trust score
66out of 100
Rating4.7★
Review volumeLow · 23
Source diversity2 sources
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About

We are an award winning, family business now in its 2nd generation and have been established since 1987. We offer high levels of service and competitive prices. Our services include: Solar Repair and Maintenance Solar PV – We are able to undertake repair works on domestic and commercial photovoltaic systems. Whether your solar systems has stopped generating, suffered storm damage or just needs a planned maintenance. Solar Thermal / Hot Water – Our solar heating engineers are able to fix faulty solar thermal systems, replace the antifreeze and repair leaks / air locks. We can also remove / reinstall solar panels when a roof needs to be replaced or repaired. Electric Underfloor Heating We have a wide range of electric under floor heating mats that can be used under tiles, carpet, wood laminate, engineered wood and vinyl tiles such as Amtico and Karndean. We can also provide an installation service for complete ease of mind.

Reviews · public evidence

What customers say

4.7out of 5
23 reviews in public evidenceCross-checked across 1 source
Which? Trusted Traders23 reviews · 4.7 avg

Highlights

"I don't have sufficient memory of the day the work was done to write a reliable review. I just remember the man who did the work. He worked professionally and explained what and why he was doing."

Which? Trusted Traders ConsumerWhich? Trusted Traders5.0 rating

"I've had underfloor heating and solar panels fitted by Rayotech, I'm very happy with both the work done and the top service they gave me. They are friendly, professional, I had a small problem with the boiler system, which they very kindly took the time to explain how it all worked so the issue was resolved. They really went above and beyond the call of duty, and I recommend them highly to others, no problems at all. I'll be booking them again for another job on another property very soon."

Which? Trusted Traders ConsumerWhich? Trusted Traders5.0 rating

"I panicked when I thought my inverter on my FIT system had failed. Reza was extremely helpful and gave me much confidence. The quote was reasonable and he was on hand to explain a few questions I had. Although the inverter rectified itself I have no reservation in dealing with this company again as they left a very impressive customer experience"

David HughesWhich? Trusted Traders5.0 rating

Detailed reviews

Which? Trusted Traders Consumer5.0 / 5

I don't have sufficient memory of the day the work was done to write a reliable review. I just remember the man who did the work. He worked professionally and explained what and why he was doing.

Which? Trusted Traders
Which? Trusted Traders Consumer4.7 / 5

3 large rooms and 2 bathrooms fitted with electric underfloor heating. After measuring the rooms, James arrived 3 days later with his team and installed all rooms in 3 hrs - everything up and running correctly. Very impressed how quickly it was installed.

Which? Trusted Traders
Which? Trusted Traders Consumer5.0 / 5

I've had underfloor heating and solar panels fitted by Rayotech, I'm very happy with both the work done and the top service they gave me. They are friendly, professional, I had a small problem with the boiler system, which they very kindly took the time to explain how it all worked so the issue was resolved. They really went above and beyond the call of duty, and I recommend them highly to others, no problems at all. I'll be booking them again for another job on another property very soon.

Which? Trusted Traders
David Hughes5.0 / 5

I panicked when I thought my inverter on my FIT system had failed. Reza was extremely helpful and gave me much confidence. The quote was reasonable and he was on hand to explain a few questions I had. Although the inverter rectified itself I have no reservation in dealing with this company again as they left a very impressive customer experience

Which? Trusted Traders
Customer in Surrey5.0 / 5

My generation meter on the solar panels stopped working but I managed to contact Rayotec during 'lockdown' They made an appointment for an engineer to call and a week before the date he rang to say he had had a cancellation and could he come round in an hour. Two hours later he had found the (expensive) answer to the problem and fitted a new invertor. He was very careful and well aware of distancing and wore a mask. I would definitely recommend this firm to anyone needing this sort of help.

Which? Trusted Traders
Customer in Greater London1.0 / 5

Professional and courteous appointment organisation. Work completed in a tidy, safe and knowledgeable manner despite extremely hot weather. Support and advice provided as required.

Which? Trusted Traders
Customer in Surrey5.0 / 5

Moved into a house with two systems already installed. Called regarding systems was told it needed to be serviced. The first engineer arrived and could not fit into the crawl space. I had to take another day off work as a different engineer had to come out. Then asked for remote monitoring on the pv system, told the engineer had to visit. The engineer on site a few minutes said a cable had been unplugged and I had to contact solax, the manufacturer to access remotely. Wish I was told this on the phone and not charged a large amount for a call out.

Which? Trusted Traders
Customer in Berkshire4.7 / 5

I was very impressed with Rayotec which I found on Google. I suspected I needed a new inverter for my solar panels. First contact suggested a call out to assess the problem. Their engineer came out on time and was very polite and friendly. It was established that the invert was in fact faulty . Inverter ordered and fitted in quick time 4 days later at a good price. I was able to pay for my purchase over the phone to yet again a polite friendly young lady. Paperwork and photos came back to me in quick time. I would certainly recommend Rayotec and would have no problem using the again.

Which? Trusted Traders
Customer in Surrey5.0 / 5

Rayotech were very professional in identifying and replacing the inverter in the loft which had caused the solar panels to stop recording.

Which? Trusted Traders
Customer in Greater London5.0 / 5

I reached out to Rayotec for help with a failed inverter unit which typically was just months out of its 10 year warranty (not with them). After supplying details of the current system, they advised replacing it with a smaller capacity one, as the existing unit was over-sized. Within a week we had their team around, very prompt and quick to replace the current unit, and test everything was working. Very polite and helpful chaps!

Which? Trusted Traders
Customer in Hampshire5.0 / 5

I found Rayotec on the Internet in 2021 when I needed a new Inverter for the Solar Panel System. They were extremely efficient in arranging a visit of their engineers who diagnosed the faulty inverter and replaced it with a new unit there and then. A few months later they installed a Solar Boost unit which enabled the use of energy from the panels to heat the hot water. unfortunately, the Solar Boot unit failed after15 months. Mr Marchant at Rayotec subsequently arranged a replacement unit under warranty from the manufacturer and it was fitted by their engineer. Throughout my association with Rayotec personnel and their engineers, I have been treated with absolute respect and they have been so efficient.

Which? Trusted Traders
Customer in Surrey5.0 / 5

David Merchant at Rayotec was professional throughout resulting in the replacement of two existing inverters with a single new inverter on time and on budget. In comparison with other installers Rayotec insisted on a site visit to ensure the new inverter was compatible with my PV array. Rayotec were totally transparent about the whole process and the timetable for caring out the work providing regular updates in a timely manner. When the new inverter would not connect wirelessly to my router, Rayotec promptly returned to install an ethernet cable at no extra cost. I could not praise Rayotec more for a professional job well done and great customer service.

Which? Trusted Traders
Customer in Hampshire4.7 / 5

Had forgotten about this provider as the service was provided over 2 months ago, but goes to prove how seamless and trouble free the experience was. Cannot fault this company

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Customer in Surrey5.0 / 5

On contacting RAYOTEC they were polite and extremely helpful .Having completed home tests and sending photos of the installation it was decided that a new inverter was required.They turned up on time on the date arranged and the work was completed efficiently. I would highly recommend this company.

Which? Trusted Traders
Customer in Hampshire4.7 / 5

A company to be recommended. From David in the office, who was endlessly helpful and patient, to the two young men who did the installation, we were delighted with both the customer service and the work done.

Which? Trusted Traders
Customer in Berkshire4.7 / 5

We were alerted to the fact our solar panels were not working when we sent off our FIT reading to the energy company. Looked up companies who may help and found Rayotec. Gave them a call and spoke to David who was extremely helpful and after liasing with him via a few emails and some photos of our system in the loft, he sent out an engineer to check and consequently replace our faulty inverter. All sorted start to finish in 20 days. Very good service and trustworthy firm. Thank you.

Which? Trusted Traders
Customer in Surrey5.0 / 5

Engineer arrived promptly and removed Solar hot water panels and decommissioned the system as agreed and was very efficient and tidy.

Which? Trusted Traders
Customer in Hampshire5.0 / 5

Didn't know who to call as had a fault on the inverter. Luckily chose Rayotec. David Merchant their man in the office understood my problem and arranged for an engineer to either repair or replace. I was told the cost and the invert was replaced. Excellent job done, well done. Would definitely recommend the company.

Which? Trusted Traders
Customer in Greater London5.0 / 5

The old 'inherited' Solar Hot Water System was malfunctioning. There was excessive heat build-up in the loft and a 'kettling'cylinder. The old cylinder and pipework needed replacing due to age and leakage' The loft/heat problems were dealt with speedy efficienty. The new copper work and cylinder replacement were also accomplished to a very high standard. Definitely a work of art. Rayotec kept me fully informed with every step of the work, costings, etc. A stream of communication so rarely encountered nowadays and I felt reassured throughout.

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Customer in West Sussex5.0 / 5

They are a family firm that really cares about their customers. They fully understand that word of mouth is the best marketing tool any company has. They are attentive and efficient and I would not hesitate to recommend them to other customers.

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Companies House registration

Active incorporated business

Active

RAYOTEC LIMITED is linked to a Companies House entry. This shows the business registration, not evidence of workmanship or service quality.

Legal nameRAYOTEC LIMITED
Company number02209397
Incorporated
Registered activitySpecialised construction
Official checkListed
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Public evidence checks

Trust checks and red flags

Public evidence shown
Public review evidence4.7★ from 23 public reviewsAcross Which? Trusted TradersCompanies HouseWhich? Trusted Traders
Sources

Every signal, traced to its origin

2 named sources
Public evidence checks

What's strong, and what to check yourself

Strong signals
Rating: 4.7★
Source diversity: 2 sources
!Worth checking yourself
!Review volume: Low · 23
!Verification: Listed

Public evidence last checked May 2026

Good to know

Common questions about Rayotec Limited

What do customers say about Rayotec Limited?

Rayotec Limited has 23 public reviews, averaging 4.7 out of 5, gathered across 2 independent sources. You can read the individual reviews and where each came from in the reviews section above.

How do I know Rayotec Limited's reviews are genuine?

Rayotec Limited's 23 public reviews are gathered and cross-checked across 2 independent public sources. Reviews spread across several named sources are harder to fake than a single polished page. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show where every review came from rather than selling rankings, so you can weigh the evidence for yourself.

Is Rayotec Limited a registered business?

RAYOTEC LIMITED is a registered business on Companies House (company number 02209397), incorporated 30 Dec 1987, listed as active. This confirms the legal registration of the business — not evidence of workmanship or service quality.

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