Grant combi 21e external
we had this installed externally in June 2018 and from 2019 till now, July 2022, we have had non stop pressure issues with no fewer than 3 different service engineers, one for each year.
We had an oil pipe leak, inside boiler, that was replaced under warranty but Grants not interested in the pressure issue and nothing to do with them as now out of warranty even though services show pressure issue from first service. £7k for 4 years of problems and stress wouldnt go near a grants product again.
Search online and you will see many others suffering from similar pressure issues with these boilers, it is a disgrace that Grants have no loyalty to their customers and no interest in their products once they are sold.
Reply from Grant UK