Space Heater Power Draw - Multiply your space heater’s wattage by x hours of use = a. Web if you’re short on time, here’s a quick answer: Web depending on the power and volt, the amps your space heater uses will vary. Most common 120v space heaters draw 12 to 15 amps.
Web if you’re short on time, here’s a quick answer: Most common 120v space heaters draw 12 to 15 amps. Web depending on the power and volt, the amps your space heater uses will vary. Multiply your space heater’s wattage by x hours of use = a.