Unfortunately for the spa industry, pump manufacturers have moved to inexpensive, inefficient pumps. The result is a higher operational cost for consumers. For example, in the late 70s, a 1 Hp model consumed 11 amps. Over the years (because of cost-cutting measures in the motor) the same model pump today consumes 15.5 amps. That’s an additional 1/2 kW per hour! Great Northern® uses only energy efficient pumps. For example, our 3 Hp pump draws approximately 12 amps on high speed and only 170 Watts on low speed. Our Advice: Don’t specify a big pump for your spa just because it’s bigger. If you want more vigorous hydrotherapy action, ask for large-volume jets and an appropriately sized pump. If you’re still in doubt, call us.