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jeff5may · 11-08-16, 03:06 PM

Looks to me like the phase change heater is just about twice as efficient as the resistance heater. From this one-shot run, 243 is nearly twice 122. That's what the power meter counts anyway. I would be tickled with saving half (or even 40 percent long-term ).

Overanalyze the specifics and the following can be assumed: your refrigerant loop is probably more than twice as efficient, but some heat gets lost. Since the resistance heater is immersed in the tank, effectively all its heat goes in the water. Not so with the condenser loop. There is plumbing leading to and from the tank that radiates heat not into water.

11-08-16, 03:06 PM	#58
jeff5may Supreme EcoRenovator Join Date: Jan 2010 Location: elizabethtown, ky, USA Posts: 2,428 Thanks: 431 Thanked 619 Times in 517 Posts	Looks to me like the phase change heater is just about twice as efficient as the resistance heater. From this one-shot run, 243 is nearly twice 122. That's what the power meter counts anyway. I would be tickled with saving half (or even 40 percent long-term ). Overanalyze the specifics and the following can be assumed: your refrigerant loop is probably more than twice as efficient, but some heat gets lost. Since the resistance heater is immersed in the tank, effectively all its heat goes in the water. Not so with the condenser loop. There is plumbing leading to and from the tank that radiates heat not into water. Last edited by jeff5may; 11-08-16 at 03:48 PM..