The range a Russian Blue settles into
A Russian Blue kept indoors rests, eats, and plays most easily when its main rooms hold between about 68 and 75 degrees Fahrenheit. That band suits this breed because the Russian Blue carries a dense, plush double coat that insulates well against mild coolness, yet the cat underneath is lean and fine-boned and does not carry spare body warmth to spare. A room that dips well below that band overnight will not harm a healthy adult, but the cat will spend the cold hours curled tightly in the warmest hiding place it can find instead of using its beds and perches normally. Steadiness counts as much as the number itself for a Russian Blue. This is a breed that maps its home carefully, returns to the same chair at the same hour, and dislikes sudden change. Set a consistent setting for the rooms the cat actually uses, rather than heating the whole house to one figure and leaving its favourite room on a different cycle.
Drafts, vents, and the floor-level picture
A Russian Blue experiences the room at floor and windowsill height, not at the height of the thermostat on the wall. Cold air pooling along an exterior wall, a draft sliding under a front door, or an air-conditioning vent aimed at a cat tree can make an otherwise comfortable room feel wrong in exactly the place the cat wants to sleep. Walk the Russian Blue's usual route with that in mind. Move its bed out of the direct line of vents and doors, and check that a windowsill perch is not sitting in a cold stream of air leaking around an older frame. Warmth on offer should always be a choice for a Russian Blue. A sunlit cushion in the morning, a blanket-draped chair away from foot traffic, and a cooler tiled spot for warmer afternoons let the cat regulate itself the way cats prefer to, by moving rather than enduring.
Summer heat and the silver-tipped coat
A Russian Blue needs the upper end of its range guarded as carefully as the lower end. That thick double coat, silver-tipped and plush to the hand, holds heat once the room climbs much past the mid-seventies, and this quiet breed tends to go still and hide rather than fuss when it is too warm. Watch for the Russian Blue stretching out flat on cool flooring, leaving its usual bed for the bathroom tile, or drinking and then retreating to shade. Those moves are the cat solving the problem itself, provided a genuinely cooler room stays open to it. If the whole home warms up, a fan moving air in a room the cat can leave, plus curtains drawn on the hottest windows, usually restores the lower, comfortable end of the range. A Russian Blue that pants, drools, or seems restless and unable to settle in the heat should be moved to the coolest room and a veterinarian contacted promptly, because open-mouth breathing in a cat is never a wait-and-see sign.
Keeping the whole household on the same setting
A Russian Blue's comfort breaks down most often through small household disagreements — one person turns the heating down at night, another opens the bedroom window the cat sleeps beside, a guest closes the door to its warmest room. Note the agreed range, the bed placements that avoid drafts, and the summer routine in the cat's own record so a sitter or a partner follows the same pattern the cat has mapped. When the Russian Blue's shared KinsLe profile carries those home comforts through Family Sharing, the person adjusting the thermostat is working from the same notes as the person who set them.