Union Technical Service Ltd

I found it was not worth the hassle of asking them for help: I was looking to improve our heating and insulation. Called them twice in July and August 2025. Told I would hear back from them. Nothing. Then, with support from Home Energy Scotland, they carried out a survey. Surveyor was great, but Union Technical didn't even follow it up. When asked about this, given nothing.

Recently had solar panels, air source heater and insulation installed. Big job, does require a fair amount of redecorating afterwards but they guys were great, answered any questions I had and the job was really well managed. Special thanks to Harrison who coordinated the project and was really efficient and chasing stuff up for me when needed, really made a the experience much less stressful having one point of contact who was coordinating it all. Appreciated the quality check once the work was completed for peace of mind and answering any final questions.

Just had a really obnoxious unsolicited sales guy at my house... When told I wasn't interested, he started an argument with me as if I'm answerable to him. If this is how the rest of their company operate I can only assume they are complete chancers!

We had this company about a year ago. They came early and in the room upstairs started to throw our stuff about. And I said to the young lad about slamming the front door everytime he went in and out and he got attitude about it. We wasn't even told that the pipes was on the outside of the wall, which we will have to do something if decided to sell - looks absolute mess. He left the attic roof window open which didn't know about after a down pour of rain, also ruined an expensive carpet!!!. The system wasn't even installed correctly which took them months to come and check. We had high bills because of this. The latest the solar box in the hallway is flashing which it shouldn't and was told it needs a part etc and guess what STILL WAITING. You will notice as i phoned each time, they was waiting til after a year as they don't have anything to do with the system. I would stay clear this company as when you have problems they don't want to know!!!!.

I would not recommend Union Technical as our experience with them is a Sham. We have not had any work done by them on our house, but they have managed to damage our new roof while renewing our neighbours roof!!!! We have been promised for the last 6 weeks that somebody would be there the next day but their promises are invalid!!!! We consult with various employees with said Company who say they didn't know about it or thought it had been repaired. We now have a broken slate in our garden today plus damage to our gutters which is NOT acceptable.

This is a great company - we had several major heating upgrades done through them, including cavity wall insulation, room insulation, solar panels and a heat pump installation, and they also helped us secure the grant. They're highly professional, and I’m particularly impressed by how efficient their communication is. Whether you contact them by email or phone, they respond promptly and handle everything smoothly, and their technicians are very professional and knowledgeable. It's a company you can trust, highly recommended.

Absolute time wasters, 6 months on from application nothing. Every time I contact them they say the will call back which they never do. The sales team are incompetent and lazy.

Excellent, friendly service.

Very pleased with the professional approach Union Technical showed in all aspects of my Survey and Installation of my Air source heat pump and Solar panels just wish I got a Battery included? But very happy with the people who installed all they all made a tidy job and in a quick turnover.

Waste of time. 4 surveys dates booked for installation started survey in August 24. Called today to say no more funding. Shocking

The installation team Plumbers ,Electricians ,insulation and Solar panels did a great job. Very happy with the standard of work and the system is working well. Do have a problem in that the kitchen has nowhere to put a heater and is cold have fitted an electric towel rail but this is not enough.

Waited 3 weeks for this crap to to install a new boiler then no one came to see if we were a eligible for a free boiler. SCAM!!

Union Technical installed internal wall and loft insulation in our stone cottage in April 2023. Following an independent review of Union Technical's work, some faults were identified and it took a further 9 months for Union Technical to resolve these issues, primarily due to them failing to respond to emails and/or phone calls. Union Technical's poor handling of these issues means that we are unable to recommend them for any insulation work.

Very efficient process by all 3 teams.. solar panel, heating and plumbing and insulation all did a great job. Special shout out to Ross and his team ( plumbing and heating) who installed 15 radiators , an air source heat pump and new hot water boiler in 2.5 days… cleaned up and left the house immaculate. Thank you - great job Jb

From start to finish you were kept informed of what was going on. Yes there was a change of dates etc because of certain contractors but that's to be expected. The whole team was courteous and as careful as you would expect. Andy and Chris were particularly polite and helpful. The office staff with Kirsty and Dianne kept you informed and updated. I'm absolutely delighted with all their work and would highly recommend this company to everyone 😀

We have just had an air-source heat pump and solar panels fitted by Union Technical. We were very impressed by the standard of workmanship. Both teams were hard-working, efficient and pleasant to have about the house.

I've just had my air heat pump, solar panels and internal cladding done this week. Everything went according to the plan I was always informed about. Next week they finish and decorate to finish. These guys are very courteous and helpful. I had to call one out 90 mile round trip as my electricity was not working and I was NOT happy.....Only to find out that I was out of electricity credit..... They still remained courteous. If you're thinking about upgrading, look no further.

Excellent service the guys who carried out my insulation and air force heating and with solar panels.did a first class job they were clean and tidy and Excellent trades men. Plus the Excellent back up from there head office. 10 out of 10. Barry there contract manager is a great guy and coverd all aspects of the instation at my property. So well done all congratulations. From john retired senior site manager.

Work done to a high standard. Just took 2daysthe men were really nice no mess left .would recommend them to any one

Quite superb service from start to finish. Very well organised worked well as a team, everyone knew their job. Everything was explained to me after solar setup. Would highly recommend Union Technical.

Good communication, keeping me up to date with what was happening. Very accomodating when arranging times for surveys etc. Installation went very smoothly and everything explained to me when they were finished.

Work completed to a good standard. Air source pump not in best position. Did not always call me back.

Great service. Was kept informed at every step and everything was left neat and tidy as possible.

Would like to give max çredit to union technical for the installation of solar panels ,the job was installed and completed extremely professional, from installation of scaffolding, solar panels ,and installation of battery and invertor. Thankyou for your professional expertise.

I have found Union Technical to be an excellent company . There is always someone on the end of the phone to give advice on anything that you need help with . From the Insulation Team the Solar Panel Team and the Heating Team the workers were all very professional and pleasant . Thank you for our brilliant heating system .

Great service from start to finish. Answered any questions I had , very tidy with all work carried out and friendly. All work was done with the time allocated. Highly recommended and impressed with the work All the different work that was carried out. Again very tidy job .

New air source heat pump keeps breaking down, new radiators don’t always turn on. Communication poor.

I have given 1 star only because I had to, otherwise would be not even worth it 1 star! Please! Please! If you don't want to have ruined house and feel as we feel, devastated. Do not go with this company! We should have free grant - isolation, air pump heating, solar panels, but only what we got a ruined pre installation house! The communication is shocking, they are on you till you say yes, and they leave you in doubts without any communication further. We had to ask a lot of questions. They booked themselves for 3 days. Well, if I would let them do it, they would do it in weeks. So the team on phone lied about time of work. They came in the afternoon of the day of work, checked my house again( after 2 people took measurements and took photos of everything in my house)The joiners started - this won't work on this wall, this won't work here .... When I spoke with them what is going on and asked for more details, they said they changed an isolation system, which I have never agreed.. ... (build a wall on the wall inside - like really?) We should have the sheets thin of isolation put on our walls). I called to the manager, he called that " we forgot to update you about this information ". Obviously, I have sent them away as from couple cm would be a fair length of my rooms taken.....!!!!!! I sent the manager some photos of my house (he asked) The house was ruined as I signed pre installation agreement and prepared house for work. I have never received an email of apologies or some suggestions of compansation!!!!! So I am working now over day/night over week to get my house to livable place, spending my own money on paint and wood. Please if you don't want unprofessional work, try to look somewhere else! I decided after this horrendous experience I won't go for anything like this. (I even didn't want this, but was pushed a lot with selling guy door to door), but there are plenty decent companies who will work better l!!! Again! Don't feel sorry as I am! Choose wisely 😌

Mick & Ross have worked tirelessly throughout the horrendous weather we have encountered recently to get the housing complex ready for new cavity wall insulation which is being installed They are on site early and have worked in the dark to clear up ensuring the area is clean and safe prior to leaving Their company should be proud of there work ethic I would recommend this company especially if there colleagues are as conscientious as them

Professional, work done to a high standard and good communication

Very professional from start to finish, Had cavity wall insulation, solar panels and a heat pump installed and everyone I dealt with from people in office to every worker on site could not have been more helpful. Wouldn't hesitate to recommend union technical to anyone.

Very poor communication I have tried to contact them about solar & battery installation but get no response then when I call a girl says they will call me back but no one ever did. They where doing the house next door and I was talking to there subcontractors who where friendly. We have now found another company who have done a full survey. They seem to just want people who are on benefits.

Recently had solar installed, no issues and great service. I would highly recommend!

This company did my solar panels and battery back up and I could not be happier with the service I received. From start to finish I was well informed each step of the way. The help with the loan application was seamless. 10/10 would recommend!

A canvasser from Union Technical knocked on my door at the start of August. He said I could have air source heating, solar panels & house insulation installed for £3500. A surveyor then called and did a full survey a week later It’s now well over 2 months later. I’ve had no communication from Union Technical what so ever. I’ve called them a few times and each time I get told all is fine with the survey. Each time I call i get the same clueless sounding girl on the other end of the phone saying and I quote her exact words, “ we’re drawing up your plans and that”. I’m not sure what ‘and that’ means but this is the unprofessional way she talks to customers. They’ve obviously not interested so I’ve now gone elsewhere and been approved for an air source heating & insulation grant. I’ve no idea what the point of union technical is to be honest. They’ve completely wasted my time and their own time & expense. They have proven themselves to be unprofessional incompetent time wasters. Avoid these people and get your grant from your local council approved supplier line I had to do. Good riddance to union technical.

Poor boiler installation. The engineer kept making difficult comments regarding installation and 6 months later we have realised theres a drop in pressure. We've had to get it refitted and pipes redone ourselves to correct this poor job.

Found Union Technical very reliable, friendly efficient staff. Explained where I could improve on my home energy efficiency. They found my shower tray was leaking when fitting my insulation. Marked where the leak was so the plumber could find it. Left a section out so I could get the work done then came back and fitted the rest. Very good service no glitches what so ever. Would not have a problem recommending them to anyone.

Was a bit nervous about getting all of the work done in our home but all workmen have been great with us. Unfortunately had some issues getting services booked in but these things happen. Once sorted all work was carried out so fast and efficiently, we’ve had our cavity walls, vents and boiler replaced and wouldn’t hesitate to recommend. Thank you 😊

Union Technical sent Scott and David up to Aberdeen to complete underfloor insulation in my very draughty house. The weather was bitter cold and we were having storms, they must have been absolutely freezing but continued to be cheery and worked well together throughout. I cannot thank them both enough as all the very cold draughts that used to come up through the floor has stopped and the house was much warmer after that even before the new boiler went in which shows that they did a very good job of insulating it well. I would recommend Scott and David to anyone and a couple of my neighbours want to see them back in Aberdeen to do their houses. Thanks so much guys and happy 2022 to you and your colleagues.

Heavily funded boilers and insulation get your house energy efficient call these guys. Best around

Service is absolutely outstanding! From start to finish communication was excellent! Every single tradesperson that came to the house was polite & had good banter! Customer service team are brilliant as well! Highly recommend Union Technical! (I had my boiler replaced, wall cavity instalation & vents)

Excellent service all works (underfloor insulation, ventilation system and new boiler and controls) carried out expertly and on time

An excellent highly professional company. I had a new boiler fitted as well as underfloor insulation. I am delighted with the service and products I received and would recommend Union Technical to anyone

Great service from start to finish.

From start to finish we had a superb experience with Union Technical. We got cavity wall insulation and a new boiler with them. Right from the start the communication was spot on, we were kept up to date throughout the whole process with regular phone calls. From survey through to boiler installation the standard of work was excellent. Everybody was so friendly and professional and adhered to Covid regulations at all times. The standard of work carried out was of a very high standard and we have no complaints whatsoever. We would highly recommend Union Technical 👍

Service given was absolutely great. Couldn't fault it at all.

Very professional company with first class tradesmen,Great to Deal with.

May 2021 Horrendous experience! Avoid this company at all cost! Starts from the top and works its way all the way down. Over promises and massively under delivers. Untidy unfinished work, damaged property flooring, unhappy workforce (all subcontracted) and despite showing East Renfrewshire Council logos / lanyards they are not approved by or working for the council. Useless - use the opposition!!

I've very good experience with Union Technical, I've got insulation done, boiler replaced. They have arranged scaffolding for my conservatory at minimal price which is not covered. The overall experience was good and I would recommend union technical to anyone looking/eligible for this.

Had old wall insulation removed and then new installed, plus a new bolier. Very pleasant to deal with, very tidy and despite it being slightly complicated to remove the old insulation from a wall where we had an extension there was minimal disruption to us. Would definitely recommend.

Union Technical have fitted underfloor insulation and replaced our boiler. We were extremely impressed with the efficiency at every stage of the process, everyone was so pleasant and helpful, and all the work is perfect.

Great service highly recommend

Great company, Great workmanship, very professional and could not be happier, would definitely recommend to others

Very let down and disappointed by this company. We had been approved a boiler and underfloor insulation, back in January, but after our second visit by a gas engineer, we were told that we no longer qualified, with no reason what so ever. My partner's emails were not being responded to. I then contacted the company on 3 separate occasions and every time I was told; union technical will look into the matter and get back to me. At the end of my last phone call, I was told I would get a call back in 5 minutes; it's been 4 days. We have since given up and reached out to another company. Save your time and go else where.

Horrendous company to deal with. We had a 90 min survey carried out at our property, after which we were told we qualified for a boiler and Insulation. We have children and our current boiler isn't functioning so it was a relief to be told we would recieve a new boiler. However this company clearly changed their mind about carrying out the work, and we never heard from them again. We have emailed them and called them several times, with nobody taking the time to explain why they have cancelled this job, leaving my family without heating. They did not even have the decency to inform us that they were no longer carrying out the boiler replacement. We have been weeks waiting to hear from them without heating, when we could have used this time to approach another heating company. For a Glasgow based company, they operate like a faceless organisation clearly after easy profitable jobs using government backed schemes.

Open 8.30am till 5pm, company works in the Boiler and insulation scheme funded in part by "The big 6 energy companies"

Shambles of a company, unprofessional and clueless (honestly they have no idea about cavity wall insulation or boilers) ......Do Not Use.......

Brilliant free Boilers

Great service from Union Technical.

This company carried out assessment of my home and promised installation of new boiler and home insulation. Months passed without contact and when contacting customer service they said there was a backlog and would get back to me. Still no further contact and friend who also had assessment carried out was advised that no funding for the work was available. To summarise this company offer empty promises, lack of communication and no customer service. Would strongly advise letting them across your doorstep if they visit your neighbourhood.

Promised free boiler by 2 staff before the third member of the ram decided a £500 contribution was required. Wasted my time! Avoid at all costs.

UT replaced my boiler and carried out insulation work and did a good job in the end, but it took several weeks and quite a bit of waisted time (with last minute cancellations and rescheduling) for them to get things organised.

Quality of work is outstanding, Highly recommended

currently in contact with our local authority for this company tipping waste products into a 94 year old drain, their response to a phone cal wash " the rain will soon wash it away"

Avoid this company at all costs they are a joke to deal with was meant to get a boiler had a guy out to my property for 2 hours of my time wasted as there was never a boiler to get. Do not listen to there rubbish they are cowboys that like to waste people's time.