Yes, you may use an electric blanket or heating pad. Please install the electric blanket or heating pad on top of the waterproof mattress protector for safety purposes. And remember always to follow the safety instructions for the electric blanket.
Unfortunately, the 100-night trial is not available on the waterproof mattress protector. However, there is a 1-year warranty against defects. Ecosa will provide free returns and free replacements in this case. See our Warranty page.