Our fridge/freezer has trouble staying cold at the best of times - we've just moved it so I'm not sure if it's because of where we moved it (there's a warm pipe nearby) or whether the freezer is on its way out. But in this weather it's never getting down to -18. The coldest it's been is -14. Anyone else's like this? I have no idea whether it's worth getting someone to look at it and repair it if possible, or whether to buy a new one. It's about 10 years old...