I actually don't know much about carpets... but generally a lift of a degree or two on the cool end will help bump up the immune system temporarily and for a few days it might be worth it. I am certainly not a vet and not sure it is needed but temp increase or not avoid stress over the next week or so. I think it just a precaution but can can't see a few degrees for 7-10 days hurting either. I am sure he will be fine.