Hi there I am having problems with my bathroom rad. Just swapped the old one for a new towel rad. In the first couple of days the rad would get hot at first while it was being blead but then go cold after a hour. Have tried bleeding the other rads in my house there was air trapped in these aswell. Am on the verge of going insane with this rad. If anyone has any tips or ideas on this they would be greatly apprieciated