A hedgehog cannot shrug off a cold house. She comes from a warm climate, her body is set for steady heat, and a cage that drifts cold for hours can leave her sluggish and unwell. Owners generally aim to hold the enclosure in the low-to-mid 70s °F, about 72 to 79 °F, day and night, and a power cut threatens exactly that steadiness. The backup plan therefore has two halves: gentle heat sources you can deploy without electricity, and a decision point, agreed in advance, for when staying home stops being the safer option.
Build the Backup Kit Before You Need It
In normal use the main heat source runs on a thermostat, switching itself on and off to hold the set range; that control matters because an unregulated heat source can overshoot in a small enclosure. Beside the cage, store the cut kit in one box: warm-water bottles with thick covers or wrapped in fleece so no hot surface touches skin, microwave heat pads made for pets that can be reheated when a neighbor or a still-warm oven allows, and several spare fleece liners and blankets. Test the kit on a calm evening: fill, wrap, place the bottles outside the sleeping area against the enclosure wall, and watch how long useful warmth lasts, so the real night holds no surprises. Keep a battery powered or simple dial thermometer inside the cage at hedgehog height, because room temperature at your shoulder is not the temperature she is lying in.
Working Through the Cut, Hour by Hour
When the power goes, act early rather than waiting for the cage to feel cold to your hand. Place the wrapped bottles and pads, tuck extra fleece into the hide, and drape blankets over the outside of the enclosure to slow heat loss, leaving an opening so air still moves. Then check the in-cage thermometer every hour, without exception, and write each reading down with the time; refresh or rotate the heat sources as they cool, and rewarm bottles whenever hot water is available. Offer her usual food and water on schedule, and handle her only briefly, since a cold hedgehog conserves energy and repeated lifting into a cold room undoes the warmth you are protecting. If she feels cool and moves sluggishly, warm her gently and gradually against your body under a blanket while you call the veterinarian; never place her in hot water or against a hot pad, because rapid heat can harm a chilled animal as surely as cold can.
Know When Relocating Beats Improvising
Set your move threshold before the cut, in plain terms: if hourly readings keep falling despite the full kit, or the house has no realistic path back to her range overnight, she goes to a home with power. Transport her in a secure carrier lined with fleece, with one wrapped warm bottle placed so she can move away from it, and take food, water, and her records. Relocating beats the improvisations people reach for in a cold house: candles bring fumes and fire risk into a room full of fleece, and a heater aimed directly at the cage creates hot spots with no thermostat to stop them. A powered home with a steady room temperature is simply the safer heater. Record the move and the readings in the same log, and on your return check her appetite, activity, and droppings over the following evenings. Her readings, usual warmth, and vet contact details are already gathered by KinsLe inside the portable Pet Passport packet that travels in the carrier beside her.