Still waiting on post certification for both cavity wall and floor insulation. Tried to call the main phone number at 4pm but said offices were closed. Tried emailing but no response.
While we don't verify specific claims because reviewers' opinions are their own, we may label reviews as "Verified" when we can confirm a business interaction took place. Read more
To protect platform integrity, every review on our platform—verified or not—is screened by our 24/7 automated software. This technology is designed to identify and remove content that breaches our guidelines, including reviews that are not based on a genuine experience. We recognise we may not catch everything, and you can flag anything you think we may have missed. Read more
See what reviewers are saying
Arash the engineer was bang on time having driven from Glasgow. He we a very personable guy and despite having difficulty with his mobile phone reception managed to complete his service of our system.... See more
Can't fault the work or the workers they arrived early worked around each other and got the whole solar panel/air source heat pump / hot water tank /plumbing / electrical all done in just over a day... See more
Arash came along to fix a simple fault that unfortunately turned into a pain because our internet is really slow and we live in an old cottage with thick stone walls. He was here about 2 hours fixi... See more
Company replied
Company details
- Insulation Contractor
- Gas Installation Service
- Heating Contractor
- Boiler and Heating Service
- Solar Energy Company
Written by the company
Energy Pig is a multi-award winning heating & insulation company and our head office is based in Glasgow & we have hundreds of 5 star customer reviews across many platforms. We have access to the government portal and can offer funding and cash back towards most Energy Efficient Home Improvements. We can also offer monthly repayments to help spread the cost for all Home Improvements Accredited / Approved Members • CIGA • KIWA • TRUSTMARK • NIA - National Insulation Association • Buy With Confidence • Quality Mark Protection • GDGC • RECC • Gas Safe • FCA - Financial Conduct Authority • British Assessment Bureau • Elmhurst • MCS Insulation Services • Cavity Wall Insulation • Party Wall Insulation • Loft / Rafter Insulation • Underfloor Insulation • Room In Roof Insulation • Solid Wall Insulation Domestic Heating Services • Gas Boiler Replacement • LPG Boiler Replacement • Electric Storage Heaters • Full Central Heating • Smart Heating Controls • Landlord Gas Safety Certificates • Boiler Service & Repair • Boiler Homecare Plans Renewable Services • Air Source Heat Pumps • Solar PV • Glasgow Heating & Insulation • Edinburgh Heating & Insulation • South Lanarkshire Heating & Insulation • North Lanarkshire Heating & Insulation • East Renfrewshire Heating & Insulation • Renfrewshire Heating & Insulation • Inverclyde Heating & Insulation • East Dunbartonshire Heating & Insulation • West Dunbartonshire Heating & Insulation • Falkirk Heating & Insulation • Stirling Heating & Insulation • West Lothian Heating & Insulation • East Lothian Heating & Insulation • Fife Heating & Insulation • Dumfries & Galloway Heating & Insulation • Perth & Kinross Heating & Insulation • Dundee & Angus Heating & Insulation • Argyll & Bute Heating & Insulation
Contact info
120 Woodneuk Road, G53 7QS, Glasgow, United Kingdom
- 0800 955 1201
- eco@energypig.co.uk
- www.energypig.co.uk
No recent history of asking for reviews
This company hasn't invited customers recently, so reviews may not be representative
Replied to 75% of negative reviews
Typically replies within 1 month
How this company uses Trustpilot
See how their reviews and ratings are sourced, scored, and moderated.
Great from start to finish
Great from start to finish! Got heating through the government grant scheme, went from 1 working heater to 9 heaters and hot water on tap. Everything was put back the way it was. Can not thank the guys enough for what they did, was all done in 2 days!
Very satisfied with the work and how…
Very satisfied with the work and how professional the guys were .. placed the radiators in a way so my laminate floors would not have to be lifted and cleaned up behind them .. Thanks Kenny, Ian, Robert, Sean and Lewis..
Arash was professional and thorough
Arash was professional and thorough. He looked for a suspected leak and informed us there was none and what to do if we ever notice anything wrong again.
Started well and fell away
Initially our experience with Energy Pig was very positive - the installation of the cavity wall insulation and fitting the insulation in the roof space went smoothly.
Beyond that we have a number of issues.
1 - When the installation team looked at our underfloor space, they told us that they couldn’t fit the insulation (as quoted). Not only was this disappointing; it also meant that we were not able to benefit from the Scottish Government Energy grant. This grant should have been used to offset the cost of the roof space insulation. So we are out of pocket.
2 - The trickle vents that were fitted to two of our windows have reduced the effectiveness of our double glazing. Not only have we lost soundproofing, we are also getting draughts through these windows. It seems to me that the vents installed are not fit for purpose - they cannot be opened/closed effectively.
3 - We have not yet received an updated EPC for the work that has been completed.
Overall, we are not satisfied with the service that we have received. At this point, we would not recommend Energy Pig.
(We sent the above to Energy Pig in December 2023 - we have not had any response to date.)

Reply from Energy Pig Heating & Insulation Funding
Consistently good service
The same engineer has serviced my boiler for the past 5 years and I have always been impressed by his quietly efficient and professional conduct. The input from office staff has also been very helpful.
Excellent service and advice
Excellent service and advice. Gary Low was extremely knowledgeable, and answered all my questions.
Energypig annual service
Energypig annual service, second year its been completed by Arash.
Arash was punctual, professional and polite a credit to energy pig. Great job from office girls booking to finish. 26
Today I received my yearly boiler…
Today I received my yearly boiler service, having previously bought my boiler through Energy Pig. For the last two or three years the same engineer called Arash has attended. He is consistently professional, mild mannered, polite and knowledgeable. Today was no exception he is a credit to the organisation.
Gary Low energypig
Gary Low arrived to do a full survey of the property, he was very prompt considering the traffic, he was very thorough and respectful of the property & our puppy.
He is obviously very professional and passionate about his job.
A credit to Energypig.
Just a pleasure to have in my home
It’s same guy I have had coming last few years.He is punctual well mannered and tells you what he is doing and what he has done.Just gets on with the job.Such a pleasure to have in my home.His name is Arash and is very clean and tidy 👍
had Energy pig out to do a retrofit…
had Energy pig out to do a retrofit assessment on my property and the RA Gary Low was thorough and explained the whole process.
The rest of the Guys who came out Jim and David where on the ball as well
Gary Low Insulation Survey
Gary Low visited our house to complete an insulation survey. He arrived on time, explained what he was going to be doing and the reasons for it. He was respectful of our young children that were about to go for a nap and carried out the noisy work first so as not to disturb them once they were asleep. Gary was able to answer all my questions and explained exactly how the work would be completed. He was a lovely, friendly, professional person and I would recommend energypig based on our experience. Thank you Gary!
Gary Low Gary Low was very good at explaining…
Gary Low was very good at explaining everything, he also had a pleasant manner.
Would recommend
David Campbell came around and gave a good inspection of the house and gave me a clear description of the current insulation needs. Very pleasant guy. Would recommend.
Visited by Gary Low for a survey
Visited by Gary Low for a survey prior to installing wall insulation. He was both friendly and professional, something you rarely find today. Gary explained everything in detail and answered every question satisfactorily. Top marks!!!!
Good service
Cavity wall survey
Gary Low was very thorough with the cavity wall inspection, taking time to explain things to me as he went along. Very nice bloke.
Home energy survey
A cavity wall survey was undertaken at my home by Gary Low as part of the ECO4 energy grant scheme. Gary was prompt, polite, very thorough and knowledgeable and went the extra mile by answering all my questions with helpful information. He explained the whole process at each stage of the survey and was even considerate enough to ensure that gates and doors were closed to ensure the dog didn't get out. First class customer service!
I found this company excellent.
I found this company excellent in every way. Installing my new heat pump they turned up on time and worked like beavers over three days till it was completed. They were a friendly bunch and on completion they left minimal mess. I did have some issues with the installation for about a week afterwards, but they sent an engineer twice all the way from Glasgow ( I live in Caithness and it's a 10 hour round trip.) in order to get the problem solved. The cause was an issue regarding a faulty pump, a manufacturing rather than an installation fault. I have since been in touch with them via email regarding some documents I required, and I received them promptly. I would highly recommend the company.
Garry Low came to my property to…
Garry Low came to my property to complete the energy survey. He was extremely helpful, professional and courteous. His approach made everything much easier and I was reassured by the quality of his work.
The Trustpilot Experience
Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.
We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.
Learn about Trustpilot’s review process.
Here are 8 tips for writing great reviews.
Verification can help ensure real people are writing the reviews you read on Trustpilot.
Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.







