Stoves can be easily self-installed but you need building control approval (which is easily done). You may wish to have your stove installed by an APHC or Hetas registered installer in which case you do not need building control approval. more information on stove installation.
La Nordica are a renowned Italian stove manufacturer that make a wide range of stoves and insert stoves. The La Nordica products are designed to burn wood efficiently and there are boiler models avaialble too.