Am new to this forum - Have a question. I have a shower/tub combo in an old 1920s house. I believe the tub is a steel tub and the glazing is coming off - that's a whole other issue. Question is - we have a new hot water heater and there's just the 2 of us. If one of us takes a shower the water is not hot for long (i took a shower this morning and i had to turn the hot all the way up and leave the cold off and it was just warm enough to take a shower - not hot even - and we have a low flow water shower head too). Also - I don't take baths because by the time the water fills up - the water has cooled signigicantly. Now the heat in the tub could be due to the steel right? But what about the shower - is this a leak on our water heater, old plumbing, our faucet fixtures, etc. Please help! I don't even know where to begin. We installed a low flow shower head and hot water tank recently hoping to help the situation. Has a bit but not a whole lot.