BEWARE of this company thier representative spent hours with me promising me the world then took a massive deposit and a month later no work has taken commenced and they have told me they cannot install at all and will now will take 10% of the total value of the job to cancell the contract. (1) Record if you can the conversation with thier sales representative and any phone conversation you have they misrepresent themselves and get you to sign up (2) Read the fine print, they often quote from this to counter what thier sales person said, (3) You have very little rights under thier contract and only 14 days to cancell (they spend a month arranging varoious surveys to get around this timline line) (4) do everything via email to have an additional record. I had a very bad expereince with my £4500 bolier replacement complete shambles on how they work and what they promise is not what you get and now out of pocket hundreds of pounds for a job they didnt even start !