It's absolutely wonderful. I am looking forward to being able to study and not have fingers so cold that I struggle to type accurately!
The cooling over summer is going to be great too - I have had airconditioning, but it is noisy old box units that are so old it's amazing they still work (they were old when my Mum moved in 30 years ago!). It will still have to fight against poor insulation, but my estimates are it could end up saving me about $600 a year on electricity.