I'm in the process of doing just that. Tired of life without a utility sink of some sort. We bought the one piece Speed Queen front loader, which was pricy but supposedly a workhorse. Not all units will stack, for some reason,so perhaps check the fine print in your manuals. I think it is a great use of space but some folks would rather have folding surface. Good luck.

I cannot imagine folding laundry in such a cramped space. I have a bigger laundry room and still fold my laundry in the (very spacious ☺) bedroom.

Life without a sink in the laundry room is indeed miserable IMHO. It is not that expensive to add one, a few hundred $. I vote for stacking too.

Will you actually use the utility sink as often as you currently use the tops of your washer and drier?

Then you're all set! I loved having mine stacked in the other house, but this one has cabinets above. I thought about removing the cabinets, so that I can stack and add a sink but I really do use the cabinets a great deal, and also have a full bath right across so it seems silly to do it in this house.

Besides being a bit trickier to install, the biggest knock on a stack washer/dryer is that if one unit becomes "terminal", i.e. too expensive or impractical to repair, you are then replacing both a washer and dryer, a bit more spendy proposition. Dryers are generally immensely cheaper and simpler to repair than a washer, with the exception of electronic controls, which will be equally as expensive to repair. Thus your washer may set the life span of the equipment.

If you are in Canada, I believe the law requires a single power cord for a dedicated stack W/D. So if you are getting an electric dryer as part of the stack, in all likelihood it will dry slower due to a smaller heating element.

Laundryvet

I have quite a few children, and for ten years I had a laundry closet like the OP posted. I now have a laundry room that includes a utility sink. I have a TL washer, btw. Anyway, the point is that my washer runs at least 15 loads a week and I spend a lot of time processing laundry.

When we renovated this laundry room, we installed an enormous "D" shaped utility sink, deep and wide, replacing the huge utility sink, in a 28 inch cabinet. In the ten years that I have had that sink, we have used it about 50 times. In fact, to avoid plumbing issues, we have shut off the water to the faucet.

Anyway, stacking units are great space savers, but ask yourself how often you will use that sink versus the inconvenience of a stacking unit. I would rather put the money somewhere that enhances the value of your home or save it for your next home. There is so much pressure to have a high-tech laundry room complete with cool decor, but really, its just about cleaning the clothes and if the need for soaking things in a sink is rare (unless you have babies or family members with medical issues), I wouldn't rearrange that space. It's really adequate, simple yes, but it will do the job. Save your money!