I am 50 and ALL of my life and children's lives, I have used COLD water for everything UNLESS I had the kid's tennis shoes that were filthy. For that I spray shout and Out, let soak and then put in washer and set my water level to "small" and use hot water. i do NOT dry shoes because it will tear the dryer up. Put shoes in the sun to dry!!
Your washer should have water levels to conserve water. It is important that you do not put a big load of clothes in and leave the water level on small. Move it to large. This can tear up ur machine or rather wear it out early. It is important to CARE for your appliances while getting your clothers clean because if you destroy your washer then you have to have MORE money to buy another washer.
Now you wash like clothes together.....whites in one load. Jeans in another load. My delicate blouses and trousers in another load. By NOT using HOT water, you will not fade your clothes or shrink them.
I do not wash white blouses with white towels.Tshirts are okay in with white towels. I also do not buy colored towels because this messes up the washing process. If everyone uses white towels then I can wash the laundry more often. If people use a different colored towel in the house every night then i will have a pink, yellow, white, blue towel and even if I use cold water then there is always the chance that the laundry will bleed or fade and it has turned the husband's boxers pink. While I thought this was cute, he did NOT!!. After I got married, it was a big confusion because he thought that everyone could use their towel 3 or 5 times. I disagreed because even though you are clean when you dry off, it does not mean that your BUTT is crap free.
I showed him his BROWN stains on the towel one night and he got really mad. Who cares, he was the idiot!! also when u dry off after a shower/bath, do NOT rub ur skin or pull it down because it is a LASTING life long rub and your skin will sag over the years. Most mothers forget or don't know to tell their daughters this.
My neighbors disagreed with my cold water ONLY concept. They believe that only HOT water works but this is NOT true. My laundry is always cleaner and smells better than theirs. Their children prefer my laundry techniques better because it is fresher.
Anyway, good luck with it all.
If u want to shrink, then use hot water and that will work.