I've had my GeoSpring up and running a few weeks now. Works great. It has a variable or stepped operation. It runs at light load after washing dishes, but ramps up to full power with showers. It's LOUD! I'm glad I put it in the utility room instead of keeping it in the hallway closet. The hassle of plumbing and wiring was worth it.
It runs on 240V, so I can't use my Kill-a-watt on it. I can only estimate the usage at the end of the month with the power bill. October is our lowest HVAC month so it's a good time to see the difference.
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