I would have given a good review, except for the fact that they broke my heating system. When my old boiler broke, I used Heatable to source a replacement. This was installed on the agreed day fairly efficiently - no complaints. I'd have given them 4 stars (they kept trying to push me to a more expensive boiler which stopped it being 5). However, ever since the boiler was installed, when the hot water is turned on, the heating comes on as well. It is impossible to have hot water without heating, which is frustrating when it is plenty warm enough at the moment. When I contacted them I was advised that although it was an installation issue, I would have to pay for an engineer to come out and fix their mistake. It is a shame because the company is good, but quite frankly, messing up an installation then charging the customer more to fix your mistake is a disgraceful practice. The only reason I've not given them 1 star is that the rest of the process was good, but the installation was ultimately extremely disappointing.