Bosch built-in fridge freezers are fully integrated. They sit behind a furniture door that matches your kitchen units, so the appliance disappears into the run of cabinets. The models here come from Bosch's Series 2 and Series 4 ranges, and nearly all have the fridge above the freezer. They suit you if you're fitting a new kitchen or replacing an integrated fridge freezer in an existing housing.

The first choice is how the freezer deals with ice. Most of the range is frost free: cold, dry air circulates inside, so ice doesn't build up and you never have to defrost the freezer. You can see these together under Bosch built-in frost free fridge freezers. There are also some Low Frost models. They defrost the fridge automatically and slow the build-up of ice in the freezer, so the freezer needs defrosting by hand less often, but it still needs doing now and then.

Next comes capacity and the split between fridge and freezer. Fridge space ranges from 150 to 285 litres and freezer space from about 70 to 99 litres. You can choose a 50/50 split if you freeze a lot, 60/40 for a balance, or 70/30 if fresh food matters most. Most models are rated E for energy, and noise levels sit between 34 and 39 dB. A few models connect to the internet.

The hinge is just as important. On a fixed hinge model, the furniture door attaches directly to the appliance door and the two open as one, which is sturdy and copes well with heavier doors. On a sliding hinge model, the furniture door moves along a runner as it opens. This is usually simpler to fit, but it isn't designed for such heavy doors. When replacing an appliance, check the hinge type and the split your current cabinet doors are set up for, because these narrow the choice quickly. Then decide between frost free and Low Frost, and finally pick the capacity. If built-in isn't essential, see all Bosch fridge freezers or the Bosch freestanding fridge freezers.