Libtek Ltd

• Horace Li

  May 2026

  5

  Excellent service and install. They were more than willing to accomodate the HP install for UFH and customizations - slab foundation finish, hiding pipework, and minor works like disconnecting the gas and moving sanitaryware. System performance has been good, and the Open Energy Monitor useful for tracking usage and performance. Only caveat is although they correctly sized the hot water cylinder for bedroom count, I wish I'd overspecced a bigger one. Can be hard to book in availability, but that speaks more to their popularity and time spent on detail. Few months after my initial HP install, I got them in again to do UFH for my top floor.

• Laura de Courcy

  Jan 2026

  5

  Rating: ⭐⭐⭐⭐⭐ We recently had a full heating system renovation completed by Libtek, and we couldn't be happier with the results! Alex and the team installed a Kronoterm Versi Air Source Heat Pump (ASHP), a Heat Geek 300L hot water cylinder, and a castellated wet underfloor heating (UFH) system throughout our entire home (both upstairs and downstairs). From the start, Libtek went above and beyond. Navigating a large project with high stakes is stressful, but Alex was always available to answer our questions—not just about the heating, but also regarding hot & cold plumbing, MVHR, solar, and insulation. That holistic advice was hugely valuable to us. They also handled all the paperwork for the £7,500 government grant, which made the process seamless. Since the installation, the aftercare has been exceptional. The team has visited multiple times to walk us through the system, and their ability to support us remotely has been a game-changer for fine-tuning the settings. The house is now consistently warm, and the system runs efficiently and incredibly quietly—you can barely hear it inside or out! If you are looking for a company that truly cares about getting it right, I highly recommend Libtek.

  Owner's reply

  Hi Laura, we're so happy to hear that you're enjoying your new heating system and that the whole process went smoothly! It means a lot to us that you appreciate our team's hard work and dedication.

• Shaun D'Souza

  Jan 2026

  5

  Having spent some time researching heat pumps I found Libtek on HeatPumpMonitor.org and I was pleased to find they service North London. Libtek are one of very few installers who have a large volume of installs which facilitate public scrutiny of their performance data - 40+ installs of which 14 are currently >365 days and across many different heat pump brands. For me this spoke to their experience, confidence and credibility such that I was happy to wait for their availability to see their design. Having performed my own research and paid for a few different heat loss surveys I had a vague idea of what to expect, and the survey also provides a good opportunity to meet the installer, build an understanding of the company and therefore who your longer-term servicing relationship will be with. Alex is an excellent heating engineer and is very passionate about his specialism and squeezing efficiencies. My installation wasn't simple with the 1900s house being a terraced so all of the materials and trenching had to be taken through. That's not an easy exercise when the heat pump is 130 kilos! The wider team - Gary, Brad, Nick, Kris, Tom and Ty - were all professional and easy to speak to. The house was left tidy and I was kept informed of expectations all the way through the installation. For those considering Libtek, the team has depth across multiple brands while still maintaining high efficiencies thus demonstrating their heat engineering is sound with strong post-install support. This should mean your heating investment travels well over the life of the materials. The biggest endorsement I can provide is Libtek are currently completing an installation at my parents’ place.

  Owner's reply

  Hi Shaun, Thank you for such a generous and detailed review (and photo)! It means a lot that you took the time to properly research heat pumps and installers before choosing us. HeatPumpMonitor is an important platform for the industry, and we’re strong believers in being open about real-world performance. As you say, it keeps everyone honest. Yours was not the easiest install, and getting a 130kg unit through a terraced 1900s property definitely kept us on our toes. The team will be really pleased to hear your feedback. Alex puts a huge amount of care into system design and optimisation, and I know Gary, Brad, Nick, Kris, Tom and Ty will appreciate the mention too. We always aim to make the process clear and straightforward, especially on more complex projects, so it’s good to hear you felt informed throughout. The biggest compliment is that we’re now working with your parents. Thank you!

• Zach Malik

  Nov 2025

  5

  Alex and his team did a brilliant job with our heat pump. Our house is nice and cosy - stays at 22 degrees and we can’t be happier. Added bonus….the hot water runs consistently and does not drop mid shower like it does with a gas boiler. It’s mid winter but the external heat pump should be fairly hidden with planting come Spring. No more gas!!!

  Owner's reply

  Hi Zach, thank you so much for sharing your experience of the heat pump we installed for you. It's great to hear your house is cozy and the hot water is working perfectly!

• james l

  Nov 2025

  5

  Libtek were exceptional from start to finish. The team installed our new heat pump with real professionalism—efficient, tidy, and clearly experts at what they do. Communication was smooth throughout, and the system is performing perfectly. Couldn’t be happier with the service. Highly recommended.

  Owner's reply

  Hi James, thank you so much for the brilliant feedback! We're delighted to hear that you're happy with your new heat pump and our team's work.

• Jochen Brandt

  Nov 2025

  1

  Update below: I was harassed by the owner for posting this review. Summary: Unresponsive time wasters! Slow response to emails, schedule meetings that they are unable to attend, provide conflicting information as to why, and finally cancel without notice. A timeline of my interaction with Libtek: Friday, 14/11 at 10 am, Heat Geek assigns Libtek as our contractors and asks them to contact me to arrange the design consultation. Monday, 17/11 at 3:40 pm. Not having received a message from them, I reach out and provide times that I'm available. Tuesday, 18/11 at 8:50 am. I give them a call and am told that they were "just going to call me" but that they needed to check the schedule. I receive a call back 40 minutes later and am told that the engineer will visit between 9 to 11 am on Thursday, unless they get called away for an emergency service. So far, so good. Thursday, 20/11 at 9:25 am. I call to check where the engineer is and am told by staff in the office that they were "just about to call me" and that the engineer is attending an emergency service. When I express my disappointment with the lack of notice and their slow response in contacting me from the outset, I am told that the engineer was meant to arrive at any point between 9-11 and so the back office didn't feel the need to contact me before they had identified a new date for the visit. Fine, a misunderstanding, though I would expect somebody who schedules appointments to be more precise in their language. The staff member suggests that I should contact Heat Geek to request another contractor - I decline as I don't want to go through the whole process again. We schedule another appointment for Friday, 9-11 am. I reschedule work to stay at home that day. Thursday, 20/11 at 8:50 pm I receive a message from Heat Geek that I've been assigned a contractor (not Libtek). I am confused, as I still expect Libtek to attend the appointment. Friday, 21/11 at 9:18 am I receive the following message: "I’m not sure whether Heat Geek contacted you yesterday and I was at a show all day so just emailing to make sure you’re aware we won’t be attending today and unfortunately we can’t help with your project." I am extremely disappointed by this unprofessional behaviour from Libtek staff. As the contractor stated that he was at a "show all day" on Thursday makes me wonder why the staff member on the phone 1) scheduled the design consultation for that day and 2) claimed that the contractor was attending an emergency repair. However, the worst is that they cancelled the whole consultation with Heat Geek and only informed me the next day, at the time of the appointment. I had arranged to work from home that day on the assumption that the engineer would attend. Edited to add: About 45 minutes after posting my review, I received a call from the owner, opening the conversation with: "Are you happy now that you've given us a one star review?". We then had a ten minute conversation, where he accused me of being impatient and knowing nothing yet damaging his business. When I got frustrated by his harassment, he then stated that I was extremely unpleasant to talk to. I asked him repeatedly whether there were any factually incorrect statements in my review and he said no.

  Owner's reply

  Dear Jochen At Libtek, we have built our reputation on providing high-quality service and exceptional aftercare to every customer. Occasionally, this means we must prioritise genuine emergency situations—particularly where children or vulnerable residents are left without heating or hot water. Unfortunately, this was the case on Thursday morning, which is why we were unable to attend your scheduled survey. We provide time windows for arrival, however there appears to have been a misunderstanding in this instance. Before we were able to update you, you contacted our office. During this call, the manner of the conversation caused distress to a member of our team. We take the wellbeing of our staff seriously and do not tolerate confrontational or unfriendly behaviour. As a result, we made the decision not to proceed with the appointment. The job was returned to Heat Geek and reassigned the same day. The following morning, a member of our team also reached out via email to ensure you were aware that we would not be attending. We are disappointed that this has resulted in a one-star review, which appears malicious and disproportionate, particularly as we acted in line with your duty of care to existing vulnerable customers and our staff. We wish you all the best with the reassigned contractor.

• Doris M

  Jul 2025

  5

  Alex and his team installed our Viessman air heatpump about 9 months ago after a detailed heat loss assessment, with very neat pipework and connections to our existing radiators. We have been through a cold winter since then and enjoyed a much warmer house which was lovely and this is despite not changing radiators. He recommended we see how things go and change to larger radiators if we needed to later as it was a retrofit without other renovations on the house. We haven't needed to change radiators, so his advice helped save us additional costs of larger radiators. We're very happy with the heat pump and Alex has always been very helpful in responding to our ad hoc query on appropriate settings.

  Owner's reply

  Hello Doris, it's great to hear that you're happy with the heat pump and that Alex's advice saved you some money! We're always here to help if you have any more questions about your settings.

• porkypage1

  Jul 2025

  5

  The most important thing when fitting a heat pump is that the person doing it knows and understands what they are doing. Alex is heat geek qualified and very knowledgeable on how to fit and operate the pump. All the engineers who work for him are thorough, polite and tidy. We are extremely happy with the installation which took a week.

  Owner's reply

  Hello, thank you for sharing your experience! It's great to hear that you're happy with the installation and that Alex and the team were so knowledgeable and professional.

• Philip Wade

  Jul 2025

  5

  Top Rate Professional Company Our association with Libtek came about through enquiring about a heat pump installation through OVO, who in turn use Heat Geek as their project manager for the install and appoint a "local" company to manage the actual installation. Unfortunately the original appointment contractor had to withdraw for personal reasons, so Libtek and Alex stepped up to fill the breach. Always tricky taking over someone else's project, however Alex was very professional in his approach and after us agreeing on a few tweaks to the original plan it all went ahead. The team from Libtek were really excellent and kept us informed of each step of the process along the way. The site for the new water cylinder is in a not easy to reach place due to previous extension work in our house, but the Libtek guys were able to complete the install in a very professional manner. The external pipe work from the pump to the cylinder had to be fixed to our extension side wall which required access from our neighbours garden. Our neighbours commented that the two lads assigned to the task were very polite and considerate which was also our assessment of all the team members we came into contact with. The removal of old radiators and fixing of new ones was all carried out with minimal disruption and positioned to take account of the existing decor. All rubbish, pallets and packaging were removed by the end of the installation. We would highly recommend Libtek and Alex to undertake similar work due to their professionalism and commitment to getting the job done on a timely basis.

  Owner's reply

  Hello Philip, thank you for sharing your experience with Libtek! We're really glad Alex and the team could step in and get the job done right for you!

• Simon Haynes

  Mar 2025

  5

  We had the good fortune to be put in touch with Alex Winters at Libtek by a friend. He and his team did an excellent job. I've come to realise that these systems are not straightforward to install, and suspect that there are very capable plumbers out there installing heat pumps which don't operate at optimum efficiency. There is endless pipework, electronics, monitoring equipment, and two very large units (heat pump and cylinder), as well as new radiators. It's a lot of work, and it seems to me that there is plenty of scope for short cuts, even bearing in mind the regulatory bodies. I've kept a close eye on the performance of ours, and am satisfied that it operates to specification. Our bills are lower, and we're doing something for the environment.

  Owner's reply

  Hi Simon, thank you for your review (and photo!). We're delighted that you had such a positive experience with your heat pump installation. You're right about the complexity involved - proper installation requires expertise and years' experience to achieve optimal efficiency without cutting corners. It's fantastic to hear your system is performing well, lowering your bills while helping the environment. Thank you again, we're here if you need anything in the future. Alex

Reviews pulled from Google Maps. We display them as posted by Google users.