Warm hearts. Warm homes. Since 1995.
- One of Scotland’s first Worcester Bosch accredited installers
- An Award-winning family business
- Proud members of Check a Trade and Trusted Trader
- Committed to protecting the planet
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To arrange an appointment, or if you would like some expert advice,
call us on 0141 212 8400
The whole process of installing a biomass boiler was complex, but Gillies made the experience as straight forward as possible. They were thorough and took as much time as I needed to ensure the job was done to my satisfaction. The quality of the finished product once installed is excellent. Highly recommended.
Fuss-free, quality installation. Pre-sales, installation team and after-sales service excellent.Thoroughly recommended.
Hugh Pollard Biggar, Lanarkshire
Like most people I shopped around for the best value deal for a new boiler - I honestly believe that this was achieved through Gillies Gas. Steve Gillies took a great deal of time to explain exactly what products were available, and the best course of action for my own circumstances, a breakdown of the work and the costs involved. He made me aware of extras to enhance the installation, but at NO time pushed these as "MUST HAVES" (unlike other companies!) - the work was carried out to a high standard by what is clearly a very professional company. On arrival home you wouldn't have known that anyone had been in my house - the house was so clean!
Mr Lanni East Kilbride
"I am writing to thank your company for your team's efforts in scheduling the work to get us up and running after our recent boiler problem. Your two engineers, Declan and David, are to be specially commended for their courtesy and hard work in resolving the problem. Please pass on our warm thanks to them."
Mr Blair Milngavie
Just a short note to say how impressed we are with the new biomass and solar installation this week.Your team have been unfailingly polite and committed to doing a good job and the subcontractors ( builders and scrap removal people) have also been excellent. Well done!
Mr D Morton Kinlochard, Stirlingshire
“We found Gillies Gas and Renewables to be a very professional and friendly service. The work was carried out to a high standard, and it was refreshing to work with a reliable company. The engineers that have worked at the property have always had impeccable timekeeping and been very polite. They seem to be honest, conscientious workers. I wouldn’t hesitate in recommending Gillies Gas and Renewables in the future, and I am proud to be Gillies Gas customer.”
Mr & Mrs Kelsey Paisley
We’ve always been happy with our dealings with Gillies Gas ever since we signed up. The contrast with your competitors could not have been more stark. Our washing machine broke a wee while before Christmas (we have our plumbing and kitchen appliances covered by Scottish Gas) - it took over 5 weeks, 4 visits and numerous phone calls to get it fixed. On the other hand Gillies repaired our boiler on the first visit and pretty much the day after I made contact. So you Lynn, and your colleagues really are top of the customer service league in my book and I continue to be happy to recommend you to anybody that asks. I really hope that the company continues to thrive and you’re going to be around for a good few years to come.
Mr S Doherty Langbank
I would recommend Gillies Gas & Renewables to anyone thinking of replacing their old or inefficient boiler. They have displayed an impressive knowledge and passion not only for biomass, but for renewable technologies in general.
Mr A Steel Burnhouse, North Ayrshire
Really nice guys - and they did a great job. Would highly recommend Gillies Gas.
Mrs Doherty Renfrew
Once again we are very happy with your standard of service. The work to install new boiler was carried out in the usual way we have come to expect from Gillies Gas. Cieran is an extremely hardworking professional young man who kept me informed throughout the day as to progress with the work.
May Cargill Erskine, Renfrewshire
Very reliable, friendly and welcoming company - the engineer was very good with my young son who was very curious about what he was doing to the boiler!
Mrs S Stalker Erskine, Renfrewshire
I was more than happy to have the men working in my house. They kept me up to date with what they were doing and were very tidy. I would highly recommend Gillies Gas. Excellent service.
Mrs Ronnie Erskine, Renfrewshire
Everything is great. Engineer Stevie was quite brilliant. He attended the repair with the minimum of disruption and without ripping up my floors.
Mr Boddy Broomhill, Glasgow
"I needed my central heating boiler replaced. Mr. Gillies visited in the morning to see and explain what work was needed, he returned in the afternoon with his quote which was very easy to understand, he went over it with me but didn't attempt to "Sell It" to me in any way, it was left with me to decide for myself, I decided a couple of days later to accept the quote (it was £600 cheaper than the nearest other quote) and a few days later the boiler was fitted by a very hard working, efficient and pleasant team of gas fitter, electricians and roofers. I am very happy with the service from everyone at Gillies Gas and would highly recommend them."
Miss S Clunas Renfrew
I was very impressed on all counts with the Gillies Gas service. The engineer explained in great detail how my new timer works and even went through 'what ifs'! I am confident that Gillies Gas have provided me with a high quality product.
Mary McLaughlin Paisley, Renfrewshire
"Once again a great job by Gillies Gas & Renewables. Craig and Mathew were extremely professional and completed the job in a timely manner, they didn't leave until we were completely satisfied with their work. I have had various team members from Gillies doing different jobs and without exception your customer care is second to none. Thanks again."
Mr & Mrs Dunham Erskine
I look forward to reduced heating costs, and of course being environmentally friendly is a huge bonus. Without the knowledge that RHI earnings would allow me to pay a significant chunk of it back, the cost of the building conversion may not been have been financially viable. I can’t wait to have my own working space close to home where I can be near my family and take the kids to and from school.
Mr A Steel Burnhouse, North Ayrshire
Everything about Gillies Gas is extremely professional. The engineer who carried out my boiler service was brilliant and I really like the fact that it was the same engineer who did the previous service. It saves me a lot of time explaining where everything is - plus it's nice to see a friendly face every time! I wouldn't change anything about Gillies Gas. They're fantastic!
Julie Robertson Bishopton, Renfrewshire
I take the occasion to thank all Gillies Gas staff for their help, their support and their courtesy to me throughout the years. Not only has everyone's work been friendly and efficient, your company has been one in which I have developed complete trust - no mean thing in the modern world.
Ms McCormack Erskine
Thank you for an excellent service - consider ourselves lucky that we chose Gillies Gas from four other contractors!
Mrs Gizzi Glasgow
In an age where most companies let you down one way or another, Gillies Gas & Renewables were different. Everything they said they would do actually happened and nothing other than this did. It was nice not having to chase them up for something – it was all there when it was supposed to be.
Stuart Cairns Murthley, Perthshire
The engineer from Gillies Gas was courteous and caring and was very knowledgeable about the circumstances with my boiler. The workmanship was extremely high quality and we felt very comfortable having him in our home. I am highly satisfied with the whole package from beginning to end. Gillies Gas even changed their plans to suit our personal situation and did so with the greatest understanding. Very impressed.
Robert Reaper Newton Mearns
"Very professional, courteous, friendly, tidy and competitively priced. Would recommend."
Mr Wilson Erskine
Hello I am super duper happy with new boiler! It's so quiet and my flat feels so so different. Susan is an absolute star and an asset to your business. I felt super confident speaking to her on the phone and although I knew you were a good company, Susan sealed the deal on the phone. Not just customer care, but customer delight is what Susan practices.
Mrs E Bandeen Cardonald
David and Scott were first class in all aspects of the job, I would have no hesitation to recommend Gillies to anyone!
Mr Hume Inchinnan
"It was especially pleasing to get our top floor radiators working again after so many years of being inoperative. This was a job which at least 4 or 5 other firms had attempted without success but your approach was systematic, thorough and professional. Accordingly, I would like to place on record our thanks and in particular to Ceiran who kept us fully informed at all stages of the job which he had said had 'proved to be quite a challenge'!"
Mr Perfect Bearsden
Engineer was polite and well mannered. Showed great knowledge about the system we have. Respected our home i.e.tidy, took shoes off etc. We are very happy with the system we chose, it suits our household needs perfectly. The engineers are very professional and could answer every question aimed at them! Tidy workmanship.
Ms L Kerr Bridge of Weir
First class service as always. Scottish Gas could learn a lot from them.
via Trusted Trader
Satisfied customer Erskine
“Gillies Gas workers treat my house like they would treat their own…with complete respect. I would absolutely recommend to family and friends”
Mr McKechnie Gourock
Initial visit identified a defective part in the system. Rescheduled service to when new part arrived, on time, got out hover and cleaned up after service. Excellent service.
Mr C McBryde Johnstone
"Excellent, quick and efficient. Very helpful, responded quickly to queries. Information given to us very informative."
Mrs Lauder Erskine
The installers were very professional and the workmanship was first class. There was very little disturbance to paint work and my flat was left in a super tidy condition. I am absolutely delighted with my new boiler.
Ms Grant Glasgow
The tidiest heating engineer I have come across - very impressed. FIRST CLASS service.
Mr Barbour Erskine, Renfrewshire
Excellent service. The service was well described, details of current funding (subject to eligibility) were given, good and a detailed quotation with supporting information on the boiler was given. A postcard advising the customer to clear the appropriate areas was sent in advance with a caveat of not to worry if it wasn't possible to do so as the workmen would arrange. The workmen were there at the agreed times. They were courteous and tidy. Overall, an efficient and tidy job.
Mrs Frew Glasgow
May we thank you Carol, Steve, and the entire team for the excellent advice, preparation, logistics and installation. Your engineers called exactly on time. They are clean, courteous and professional. They took the time to listen to any of our concerns and explained the processes where appropriate during the install.
Mr & Mrs James Erskine, Renfrewshire
Just wanted to say thank you so much for the great service you have all given me over the past week. I really appreciate the fact that you took time to email me and keep me in the loop every step of the way. Well done, special thanks to Lynn and Dave the engineer.
Mr W Michael Erskine, Renfrewshire
"Best quote, very professional, did not push highest value boiler or thermostat. Great boiler, friendly & reliable staff, special thanks to David and Craig (fitter). Will definitely use again."
Miss L Reid Johnstone
"First class service. From first contact through fitting of hot-air unit."
Mr Mole Erskine
Engineer was efficient, friendly and courteous. Totally satisfied with Gillies Gas and would not change a thing about their service.
Mrs M Berry Erskine, Renfrewshire
The workmen were fantastic, John, Chris & Ceiran worked tirelessly & never stopped, they were very tidy & polite. Overall excellent to have in my home.
Mrs Jamieson Glasgow
"Really happy with work and reasonable price, work was well done and tidy."
Mrs K Russell Renfrew
Gillies Gas were recommended to me by two colleagues and I was delighted with the professional way they replaced my boiler in 2010 and serviced the boiler annually thereafter. They are always on time, polite, leave everything clean and tidy and I can recommend them without hesitation.
Mrs Griffiths Paisley, Renfrewshire
Thank you for all your help and assistance. The heating system is fantastic and the winter now does not seem like such a daunting prospect. Everything went smoothly with the absolute minimum of disruption and I will have no hesitancy in recommending your services in the future.
Mr D Locke Paisley, Renfrewshire
First sales visit all went very smoothly and the quality of the Information provided in the written quotation was excellent. The installers operated as a very well oiled team. I was given good information on the system handover and having just received my first FIT cheque I am very pleased. I would recommend Gillies Gas & Renewables to friends and family.
Mr Stoddart Dullatur, Cumbernauld
"We would have no hesitation in recommending Gillies Gas & Renewables. Their knowledge, workmanship and genuine advice all add up to an excellent company with integrity. Plus, they tidy up after the job is done - this doesn't always happen!"
Mr O'Donnell Denny
“We would like to thank you again for our new heating system that was installed in January. We used to pay £75 every month for our gas bill with our old boiler, we got an e.mail from British Gas to say our heating bill will now be £28 per month, great saving. Our house is lovely and warm with constant hot water.”
Mr & Mrs Lindsay Paisley
Thank you for a job well done. Your personnel carried out the work very efficiently and were extremely polite and explained everything to me in details. I would have no hesitation in recommending your company.
Mrs Kidger Houston
Turned up at stated time, removed old boiler and installed new boiler. When work was complete I was shown how to work the controls, but more importantly I was given a contact number that I could phone for further advice, I have used this and they are very patient and will talk you through what you need to know. They also clean up and take away all rubbish.
John Whyte Paisley, Renfrewshire
The boiler is working well and oh so quiet compared with the old one it replaced.
Mr T Marshall Bishopton
This company was professional, and efficient throughout. The guys were very hard working but also friendly and tidy. I felt very happy with the work they did for us.
Mrs M Smith Erskine
All the workmen were very skilled. They had a good work ethic. They did an extremely good and aesthetically pleasing job.
J Thomson Whiting Bay, Arran
We have been using Gillies Gas since they started up in business and have never been anything other than extremely pleased with all aspects of our business interaction. First class service.
Nicholas Larkin Ayr
Very pleasant to deal with. The workers were very helpful, clean and tidy.
Mr Murison Paisley, Renfrewshire
I have recommended Gillies Gas & Renewables to others and I am very happy with all the details and interaction with Gillies!
Graham Goodwin Hurlford, Kilmarnock
Lydia and I would like to thank so you very much for bringing heat back into our house. Although I was working all day and couldn't be at the house Lydia was extremely pleased in the professional and very polite manner of your team of engineers. Lydia said that was the cleanest the house had been for months (ha ha ha) but seriously when I came home from work I was very pleased that the house was really warm again. I also expected there to be a bit of a mess but no, it was as if there was no one but Lydia at home and your team were still working hard. I would have no hesitation in recommending Gillies Gas to anyone who had central heating issues.
I know you had to re-jig your schedules to fit us in and I really appreciate that you were able to do so.
Mr Dunham Erskine
Gillies Gas engineer was professional. He carried out our yearly service to our boiler with no problems at all. All the Gillies engineers and office staff are friendly and I would not change them for anything!
Ms Laurie Erskine, Renfrewshire
We had 5 other companies and all were hard sell & no technical information. They all said we could get a 4kW system on our roof but that was impossible. Don't know how they would have handled it if we had went with one of them.
Then Gillies Gas & Renewables came along. They had some expensive measuring equipment & sized a system that could be fitted. No selling just good information.
The install team were first class, even carrying out some free repairs on roof. Highly recommend this company.
Mrs S Ewing Lenzie, East Dunbartonshire
Your engineer was very patient and answered my many questions. I was very impressed that my new boiler was installed, and up and running in one day. Very impressed.
Mr S McMilan Glasgow
At first I thought Gillies Gas had just sent a young inexperienced lad to install boiler and was preparing for all sorts of problems - I was IMMEDIATELY reassured by the knowledge and expertise that he showed - even though I live in a listed building - he seemed to have great expertise in all aspects.
Mrs A Sawers Paisley, Renfrewshire
Gillies Gas contacted me to arrange annual service and I have always found staff very courteous at all times. The engineer was very professional and friendly and the service provided is great value for money. Carry on what you are doing GG&R!
Mrs M Campbell Erskine, Renfrewshire
Well planned installation with a responsive team. Gilles made the whole process easy. We highly recommend this company for your heating needs.
Mr Del Priore Kilcreggan, Argyll & Bute
We had a very good experience with Gillies. It's a long process, but their communication was good, their technical knowledge was excellent and we felt we could trust them. The install went very smoothly, the engineers that did the install were polite and friendly and seemed to have good knowledge of the system.
Iain Hamilton Lugton, East Ayrshire
"As soon as I contacted Gillies I felt that we had made the correct decision - both in our choice of boiler & the Company to provide it. From the very first contact Gillies have been most helpful, very polite & punctual.
The installation was quickly completed, the engineers & fitters knew exactly what they were doing, were very tidy & caused no disruption.
As for the system itself, we are absolutely thrilled. It has exceeded our expectations. The house is quite old with stone walls over 2ft thick and in a rather exposed position, but once the new plumbing had been connected to the biomass boiler the whole house was transformed & now is as warm as we want it, with ample hot water
All in all I would thoroughly recommend Gillies to anyone looking for a supplier of renewable energy."
Mr P McMullan Inveraray
Very knowledgeable, gave good explanation of what was required. Advice give re grants available. Tidy working, and work carried out in a timely fashion.
Mr & Mrs MacLeod Erskine, Renfrewshire
“New boiler installation ... Excellent from start to finish! ...Friendly, professional, great workmanship, progress reports as they went along and worked past their scheduled time as a result of some unanticipated challenges. Cleaned thoroughly and took us through all the operating instructions. First class and would highly recommend. Well done and thanks again.”
Mr Anderson Greenock
"Just a Wee email to say thanks for the work you and your guys did when replacing our boiler and to Matthew yesterday when he came to finish the flushing. Great service from the very start and have no complaints at all, will definitely recommend yourselves to anyone that asks."
Mr Wood Clydebank
Found overall experience of Gillies Gas excellent. A thorough service and explanation about the system from a courteous and interested engineer.
Mr W Blair Milngavie
Efficient, thorough and attentive to detail. Listened to my questions and endeavoured to respond to each of them. Demonstrated a professional approach with a courteous manner. I would have no hesitation in recommending Gillies Gas to anyone considering a new boiler. I have always appreciated their prompt service, attention to detail and customer follow up.
Mrs Rankin Kilmacolm
Just a quick note of appreciation to all the workers who helped with the installation of our new central heating system from the two men who delivered all the equipment and to Craig, Steven and John. The three of them worked so hard to which we are extremely grateful for. The three of them are an asset to Gillies Gas and the company should be proud that they employ such polite, considerate and hard working guys and nothing phases them.
Ms K Gaffney Coatbridge
"The engineer was fantastic. Never stopped the whole day and kept me up to date with everything that was happening. Delighted with the work."
Mr A Dooner Johnstone
The quotes we received were timely, accurate and full of detailed information to help us make our decision. Gillies Gas & Renewables were extremely courteous and obliging with our requirements and professional in all aspects of installation.
Mr Quye Kilmacolm
A big thanks to all at Gillies Gas for the service provided with the installation of our new boiler. From the initial visit from Steve right through to the installation itself, the service was top class. Our new boiler was installated within two days and the boys worked extremely hard and were a pleasure to deal with. The whole customer experience was second to none.
Mrs Alexander Erskine, Renfrewshire
All Gillies Gas engineers are lovely, however the engineer that called today was exceptionally nice and helpful.
Mrs Stewart Erskine, Renfrewshire
Just to say a big thank you for your engineer who called this morning. I phoned at 9 am today as my boiler had a problem and the advisor who took my call said you were extremely busy but would try and get an engineer out, if possible. Your engineer called and showed me which valve to operate in the event of it happening again. I must say the guy was very well presented and I think the new uniforms are very smart and does the Company proud. Keep up the excellent work.
Mrs M Campbell Erskine
Excellent service, polite professional engineers who left everything clean and tidy. I have always had first class service from this company.
Ms J Burgess Johnstone
I have found Gillies Gas to be very responsive and reliable. I am very satisfied with my Worcester Bosch boiler installation and the subsequent servicing and follow up care. I would strongly recommend Gillies Gas for both boiler installation and servicing.
Mr Slavin Glasgow
The install team knew what they were doing, took exactly the quoted time and left everything as it should be. The electrician did a great job on integrating into my existing installation. [On the system handover] Again a good job. As a professional engineer myself I poked my nose into all he did. His explanations were more than adequate and obviously based on full ability.
Mr Heuchan Gourock
On time, polite, efficient, brilliant company.
via Check a Trade
Satisfied customer Bishopton
Excellent company to deal with from MD down. Ceiran, John and Steven were a great team and a pleasure to have in our home. Would thoroughly recommend to friends and family. Also a pleasure to deal with Lorna at head office.
via Trusted Trader
I have dealt with Gillies Gas for about 12 years since system installation - and service is always prompt and well carried out. Engineers are always pleasant and courteous and leave everything tidy.
Ms L Blair Renfrew, Renfrewshire
Your engineer David was the best workman I have dealt with, without a shadow of a doubt, GREAT!
Mr Stark Renfrew, Renfrewshire
Apart from excellent servicing of fire and boiler, I asked some questions regarding future replacement of the latter, and the answers were given clearly in that I understood what action would need to be taken. Very satisfied with service.
Mrs I Walsh Glasgow
Nothing but praise from start to finish. Smooth easy transition. Quality workmanship. Any problems have been ironed out quickly. Easy contact to the team.
Would highly recommend Gillies Gas.
Graham Steel Symington, Ayrshire
[via Facebook] Had fantastic service today from Gillies Gas & Renewables, a local company. The engineer was very thorough stripping a few parts out the boiler, cleaning and checking it and checking radiators etc, very knowledgeable guy who was happy to advise on a few issues, took nearly an hour. Last year I used a squad from Glasgow who did a flue analysis and left in 10 minutes, no names but starts with a single F.! Big up local companies who provide good service
Mike Tomenson Bishopton
All colleagues that I have dealt with from Gillies Gas & Renewables have been very pleasant and approachable. It is clear that they have a good knowledge of the biomass market, and paid close attention to detail on all aspects of the project to ensure everything works as it should. Although there were slight delays during the installation, it was evident that the installation team were doing everything that they could to complete the job in a timely and professional manner.
Mr A Steel Burnhouse, North Ayrshire
Delighted with the service. I cannot praise the engineer highly enough. First class service .
Ms Clark Stepps
Your engineer David was courteous and extremely professional in his approach and carried out a thorough boiler service. Afterwards he cleaned up all traces of his visit before completing the necessary paperwork. It's been over 3 years now since Gillies Gas installed out boiler and radiators and we've never had any problems. We're extremely happy with the service received from Gillies Gas.
via Trusted Trader
Satisfied customer Houston
A big thanks to all at Gillies Gas for the service provided with the installation of our new boiler. From the initial visit from Steve right through to the installation itself the service was TOP CLASS. Our new boiler was installed within two days and the boys worked extremely hard and were a pleasure to deal with. The whole customer experience was second to none.
Mrs Alexander Erskine, Renfrewshire
Gillies did a fantastic job from when I first contacted them to enquire about renewables, through to installation and post-install support.
As a company they clearly understand the biomass market well, and their assistance in providing quotes and guidance was first-rate. Their workmen were friendly, professional and knowledgeable.
When I had a query about the wood pellet boiler, Gillies had a direct line to the manufacturer and got a quick response to questions.
Overall, highly recommended.
Stuart Cotterell Milton of Campsie, North Lanarkshire
Engineer very polite, knowledgeable and professional. It was immediately apparent he was approachable and customer focussed. Explained and demonstrated how to reset digistat monitor - fantastic service.
Mrs P Dowd Bearsden