Heat pump dryer
Not so much a question but a review on a “green” product.
Recently purchased the Whirlpool YWED7990FW heat pump dryer with matching washer for new home construction.
I ran 3 loads of laundry through the pair, the washer worked ok, it was louder than our current Kenmore model (6 years old). Very basic features, laundry was clean, so we can’t really complain about its function.
The dryer on the other hand really disappointed me.
There are 4 temp settings on the machine “High, medium, low, and extra low”. Thinking the heat pump would dry on a relatively cooler setting, and thus thinking it would take a longer time to dry. My first load consisted of a single standard queen set bed sheets. The high setting was very hot – very similar to a conventional electric dryer on medium/high. The load took about 60 minutes to dry. Not bad. Main complain is that there is a “cooling vent” on the rear of the unit, not used to vent the humid air from the clothes, but used to vent the waste heat from the heat pump. There is a small fan in this opening, that assists in moving air over the heat pump. The heat pump runs very hot, and the discharge air from this vent is very warm. By the end of my first load, the laundry room (8×5) was 92*. The room has double doors.
Second load, was another set of sheet, this time i tried the “extra low” setting, hoping it would use cold air to cool the clothes. Nope, just a slightly less hot setting, but still hot. The room was still being pumped full of hot air, I even left the doors open to help ventilate the room (but that’s not really the point of a laundry room is it?) The room was still so hot, that i worried about the long term affect on the walls. This disappointed me. the dryer works, it only dry’s hot, it takes a bit longer than normal, but it discharges a crazy amount of hot air into the room. My indoor relative humidity level seems to jump up by about 3-4%, about 25 feet away.
I find it really hard to believe that generating all this heat (even by heat pump) would be more energy efficient than a conventional electric dryer set to dry on “air fluff/cold dry” setting.
Needless to say, we managed to get our dealer to agree to a 25% restocking fee, and exchanged the paid for an LG set that was on sale. I will now be cutting a hole in my rim joist and installing a heartland airtight dryer vent cap to try to keep outside air out.
For everyone interested in the vent-less heat pump models, hopefully this review helps in their decisions…