The One Year service was outstanding. The day after our EPCImprovements Air Source Heat Pump (ASHP) was switched on we moved into our refurbished house with dozens of things to sort out. The temperature plummeted and it snowed and we had difficulty controlling the heating but not the hot water which has always been excellent. A year later the service engineer not only transformed our ability to control and adjust the heating but took great pains to ensure we understood it and since then the heating has also been just right. There was a part which proved to have a fault which he had replaced by a colleague which made the control just perfect but he kept in touch to check we are happy and responded promptly to the questions we emailed or texted him - we are not gifted IT users generally but are now gifted ASHP users. We've had snow again since his visit and we knew how to handle the outside temperature variations so just admired the pictureque views from inside our warm home. He's even promised to do our next year's service which as his aim is to spend as long (or short) a time as necessary to ensure we are entirely happy is great news.