I am delighted with the quality of installation and the after sales service. I chose Raeli Hydro Systems because the drilling was likely to be the most unpredictable and complicated part of the installation and that is the core strength of Raeli Hydro Systems . As it happened, we experienced serious issues with artesian water sixty meters down and it might have created a real problem if the drilling was being undertaken by a subcontractor to a heat pump installer. Raeli Hydro Systems had the experience to solve the problem and were able to throw more resources into the project in order complete on time.