How many gallons / litres is your home water heater?
We live in a suburban 4 bedroom detached home. I find that after my wife and kid shower, I’m stuck showering in cold water.
Are they using too much water or is my water heater just not big enough?
Edit: not my photo. We currently have a 50gal tank.
Not sure of the size exactly, but my 8-unit condo building shares a single water heater that looks like the picture you posted. When I shower it takes 10+ minutes to even get lukewarm, then I only have 5 minutes of water pressure before it turns to a dribble.
In your case, and tankless water heater might be a great route. Instant, unlimited hot water.
LOL that’s me after my wife and kid shower. Luke warm dribble and I’m a bald guy so I don’t have to fuss with washing hair and stuff. My showers are quick.