The power consumption is directly related to how efficient the heat pumps are. Although they will probably increase your utility bill, it is vital to note that heat pumps are more efficient than space heaters. That makes them a better option, especially if you need to heat large rooms. You can take a look at SEER at HSPF ratings to learn more about the efficiency of the units. Additionally, you can look for particular certifications related to energy efficiency. The most famous one is the Energy Star certificate, which proves that the product is eco-friendly and helps you to save on utility bills.