launderess
Well-known member
Powerful heating isn't necessary (within reason) if a washer can draw hot water, and temps coming out of taps are consistently 120F-140F.
Commercial laundries that use steam for heating wash or rinse water rarely take tap cold and heat; rather hot water is boosted from say 120F to 160F which requires far less energy than going from 84F to 106F.
Problem is many domestic washing machines are fundamentally flawed nowadays thanks to electronics and interfering government mandates.
A short pre-wash at cold or even warm, then hot fill with boost to 120F, 140F or even 160F is easily done with a 1300 watt or bit less heating element. Thing is most manufacturers are leery of putting heating elements rated higher than 1000 watts or so for fear of machine drawing too much current from a 120v/15 amp circuit. They could get up to 1800 watts of power from a 20amp circut, but that might alienate sales from those who don't have such an outlet where washer is located, nor are interested in doing the upgrade.
SQ likely never bothered again with adding a booster heater to their front loaders because they assume American households obsession with chlorine bleach is enough for sanitizing, whitening and stain removal.
Commercial laundries that use steam for heating wash or rinse water rarely take tap cold and heat; rather hot water is boosted from say 120F to 160F which requires far less energy than going from 84F to 106F.
Problem is many domestic washing machines are fundamentally flawed nowadays thanks to electronics and interfering government mandates.
A short pre-wash at cold or even warm, then hot fill with boost to 120F, 140F or even 160F is easily done with a 1300 watt or bit less heating element. Thing is most manufacturers are leery of putting heating elements rated higher than 1000 watts or so for fear of machine drawing too much current from a 120v/15 amp circuit. They could get up to 1800 watts of power from a 20amp circut, but that might alienate sales from those who don't have such an outlet where washer is located, nor are interested in doing the upgrade.
SQ likely never bothered again with adding a booster heater to their front loaders because they assume American households obsession with chlorine bleach is enough for sanitizing, whitening and stain removal.