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outy · 02/06/2018, 04:45 PM

After some controversy regarding wattage use/d and head height, a kill a watt was purchased so I could do this test. It was always my opinion that impeller design plays a larger role in wattage use and head height than just saying AC pumps pull "much less" wattage at higher head pressure. It certainly is not true for the Iwaki.

Results are for a 15 year old Iwaki MD 55 with a clean impeller.

at 11' the wattage was 160W

at 2'-3' the wattage was 163W

Not much difference as I expected for this design.

Quite the energy pig for 24/7 use. At our current rates I was spending $223 a year on electricity.

My current Jebao DCP dc pump is pulling 58W with the same flow at a cost of $81 a year.

That is a savings of $142 each year the pump last

This completely bust anyone's fallacious claims that AC and DC pumps use the same wattage for equal flow rates. Both pumps used the same exact plumbing as both are hard plumbed into my loop. AC pump for water changes, and DC pump for recirculation.

02/06/2018, 04:45 PM	#1
outy Moved On Join Date: Oct 2004 Location: auburn CA Posts: 4,021	Iwaki md55 actual wattage used After some controversy regarding wattage use/d and head height, a kill a watt was purchased so I could do this test. It was always my opinion that impeller design plays a larger role in wattage use and head height than just saying AC pumps pull "much less" wattage at higher head pressure. It certainly is not true for the Iwaki. Results are for a 15 year old Iwaki MD 55 with a clean impeller. at 11' the wattage was 160W at 2'-3' the wattage was 163W Not much difference as I expected for this design. Quite the energy pig for 24/7 use. At our current rates I was spending $223 a year on electricity. My current Jebao DCP dc pump is pulling 58W with the same flow at a cost of $81 a year. That is a savings of $142 each year the pump last This completely bust anyone's fallacious claims that AC and DC pumps use the same wattage for equal flow rates. Both pumps used the same exact plumbing as both are hard plumbed into my loop. AC pump for water changes, and DC pump for recirculation.