Cosier Heat Ltd

Cosier installed a Sunamp thermino hot water heater in my home, replacing an old immersion heater. It had to fit into a small space in a small kitchen but from the original design to installation, Cosier did an excellent job of fitting the Sunamp, as well as a booster pump and a limescale reducer. The installation was completed in a day and I now have a reliable supply of very hot water, with the knowledge that this is much more environmentally friendly, more efficient and more economic. Thank you Cosier!

From my initial contact on their website, which was responded to extremely promptly, they have delivered a service which exceeded all of my expectations. I was asked to take photos of the existing boiler and answer questions about my hot water usage, and a quote quickly followed. I advised that I would be financing through a “green loan” from my mortgage provider and that the installation would be in concert with high heat retention storage heaters from a separate supplier and this would take an amount of time to arrange. At no point was there any “hard sell” or “pushiness” and further questions I had were responded to quickly, courteously and knowledgeably. I did not hear from Cosier again until I contacted them to arrange the installation – there were no annoying follow-up calls, or anything like that, the fear of which always makes one pause to contact companies in the first place. After messaging to arrange – and I should say that the majority of my communications were via WhatsApp message with Ben, so no wait for emails to be responded to and super convenient to message on the go and send photos when requested – I had the installation date confirmed the next day and the installation itself took place a week and a half after the request. Ben arrived promptly when he said he would, kept me up to date on what was happening (I was working in the office and gave him the code to my building and left a key under my door mat) and, when I arrived home just after 5pm, Ben was still there and I had working hot water already. He had some other bits to do the next day and so would be returning, but he talked me through the system and asked that I offer him feedback after I had used it and if I experienced any issues. I went for the Sunamp Thermino 150 litre. It charges for just three hours during the night and is absolutely silent. It replaced a churning hot water cylinder and a noisy pump. The old system was in a dedicated cupboard and, in a one-bedroom with little space, it is so good to now have a tiny white box and all of this extra usable area now. The Sunamp is also totally cool to the touch. It looks really impressive and quite “space age” (I have already arranged to have friends over to come and admire it and congratulate me on my cleverness) and my shower is just beautiful, wonderfully hot and with amazing water pressure. Cosier has been hands down the best experience I have had with a company. I would not hesitate to recommend them for their diligence, dedication and professionalism. My partner and I will no doubt be purchasing a house together at some point in the future and, when that happens, one of the first calls that I will be making will be to Ben and Cosier about what can be used in the new place without the restrictions that leasehold ownership imposes. I don’t think you can have a higher recommendation than that.

We would confidently recommend the team at cosier heat Ltd for a simple and informative process, from Dina’s comprehensive quotes with fast feedback answering all our initial concerns, to Mark’s excellent installation. We are very happy with the results and already reaping the benefits of much cheaper hot water.

Exceptional customer service! I honestly don't have enough words to describe how helpful the team was, especially Ben. He was extremely attentive and went above and beyond to make sure everything was taken care of. I would definitely use their services again without hesitation. This is truly a company that goes the extra mile for its customers! My problem wants on my Sunamp Boiler

Big thank you to Ben and his team. Very professional team from the beginning until the end. We got many quotations with misleading information from many companies, including the big ones. Only cosier was able to make us take the decision to move from gas boiler and hot water tank to heat pump installation and hot water system with Sunamp. From the beginning, Dina was sharp with the right information with knowledge in the calculations and price. In the installation process Ben and Mark work hard to make everything OK. Ben is a great team leader. He always dealt patiently with all the situations in the process and keep us informed on the process to make it easier. Mark has an unbeatable knowledge and experience in these subjects, Furthermore, he is a perfectionist very good engineer. He worked hard on an installation that looks great and works very well. Now that all is done, we want to share our personal experience with Cosier but most importantly the great experience with the Cosier team. Thanks again.