When you are looking for a replacement boiler, it often feels like there are dozens of manufacturers to choose from with little difference between them. Many companies focus only on the features and pay little attention to the appearance of the units, assuming that most customers aren’t too choosy about what they look like. If you are after something which is a little bit different to the usual run of the mill offerings, then two European manufacturers, Ariston and Biasi boilers, might fit the bill.