900 Shower Door

I live in a small, approx. 700 square foot apartments. The water heater is inside a closet, 50 gallon, just under the HVAC unit. The firm has a slatted door for airflow.
I wondered if it was worth my money to buy a batt for $ 10-20. The water temperature, I measured the laundry, kitchen and shower areas were all at 135 degrees. I have been reading this summer.
Last winter, because heating costs, our apartment sometimes ran as cool as 53 degrees. During the shower (of course), the water just could not warm enough to keep me from shivering. I did not have the meter at that time, so I do not know the temp reading.

Because the cabinet that houses the water heater is inside our cold temp, batt would really make a difference? We are on the top floor down, the north side of building, and get the maximum effects of cold weather. The plumbing works through walls, and little is known of their insulating properties, so that their exposure to cold is beyond our control. The cabinet heater is completely internal in the apartment. Shower faucets plumbing region are exposed on a wall outside, along a corridor that opens garage, protection There is a wind full of cold.

Question:
What the insulation blanket to make a difference? I read on the internet that the water heater must have a temperature of 130 degrees or less. I currently set at 135, which means that I'm the lowest of five levels or run the risk of overheating. Would the temperature be held at 130 degrees to be strong enough that the time required to reach the shower (about diagonal. 7 meters of hot water) I would have a more uniform temperature hot?
* Or the plumbing running through the cold walls, floors and are strong enough to be null and void insulation blankets? Ineffective?

I hope I gave enough details needed w / o totally bored!

Thank you for your suggestions!
111808 1:08

I do not see how the insulation will help on your electricity bill in winter because the heat escaping whatever your water heater is just another place that you go into heat power, anyway.

It could save a bit during the summer. I thought the new water heater does not need more coverage, though, and adding water heater blankets on a cycle, which they have lived there 20 years - most of these water heaters alumni could benefit from this have been replaced by now.

I do not see it recommended as a method of conservation of energy more, so I'd say save your money.

Yes, I think it would be the cost of installing insulation.

If the tank is warm to the touch to a film about him

135 degrees is a fairly high setting for a water heater. You really run the risk of burns with high temperature. I recommend about 120 degrees and use the coverage. You should see some savings on your energy bill. That extra 15 degrees really makes a difference.