8 ways to stay warm at home without a heater

8 Ways to Stay Warm At Home Without a Heater Close all of your windows properly. Use cheap clear shower curtains over the windows that receive sunlight. This will keep the cold air out, and the warmth from the sun will heat your house without cold air coming in. Put down plush area rugs on hardwood or tile floors. Sleep with a hot water bottle at the foot of your bed. Wear multiple layers of clothes. Keep your oven door open. Drink warm beverages. Find a friend or pet to snuggle with.