Awful aftercare. The fitter recommended by them didn’t do a great job. Initially some snagging issues corrected quickly however the redial fitter refused to do some of our requests even though Wren had agreed and sent us the parts!!! Also recently attempted to have my boiler serviced and the plumber could not remove the casing because of the unit fitted by Wren. I didn’t think this would be a problem as they planned and measured our kitchen and you would think they had the knowledge for these problems not to occur. Their solution? To remove the unit and leave the wall around the boiler unfinished. They will refund the cost of the unit but not make good the wall. Also have been waiting 10 months for further remedial work to be completed. When you ask for your issues to be dealt with as a complaint they refuse to pass it on to a manager! Absolute joke. Worst company o have ever dealt with