EcoRenovator - View Single Post - The power use of various stuff around the house

NiHaoMike · 08-30-14, 10:46 PM

I have found that 107F seems to be the optimum temperature for showering in my case, which is of particular significance with a heat pump water heater. Dishwashing needs somewhat higher (120F or above, as high as 140F for some detergents), but if it's a plain electric water heater, using the one built into the dishwasher would always be more efficient as it's on demand. (In the case of a heat pump water heater, put in some automation to temporarily boost the setpoint just for dishwashing!)

08-30-14, 10:46 PM	#10
NiHaoMike Supreme EcoRenovator Join Date: Oct 2008 Location: Austin, TX Posts: 1,154 Thanks: 14 Thanked 257 Times in 241 Posts	I have found that 107F seems to be the optimum temperature for showering in my case, which is of particular significance with a heat pump water heater. Dishwashing needs somewhat higher (120F or above, as high as 140F for some detergents), but if it's a plain electric water heater, using the one built into the dishwasher would always be more efficient as it's on demand. (In the case of a heat pump water heater, put in some automation to temporarily boost the setpoint just for dishwashing!) __________________ To my surprise, shortly after Naomi Wu gave me a bit of fame for making good use of solar power, Allie Moore got really jealous of her...