Question: My toilet randomly empties itself of water. What would make the toilet empty itself without anyone flushing it and how can I fix it?
Answer: Their are a couple answers to this question, but this solution fixes it 99% of the time. Poor venting or no venting of the fixture. Vents allow for air flow to the toilet sewage system. Without the vent, air pockets form in the waste branches witch can cause what is called back-siphonage. The air in the system which, without a vent, can only ecscape through the sewer. It can pull the water in the trap of the toilet with it.
Question: How do you get water in the toilet tank to stop over flowing?
Answer: The fill valve in the tank has a leak in it. Also, if the fill valve has been replaced recently it is possible that it has been set too high. If the fill valve is old, it could do you no harm to replace it. Sometimes the shaft or wire that is used to set the level, corrodes off. By replacing it your problem should be fixed.
Question: Why would a water heater run out of hot water faster than normal?
Answer: If your water heater is running cold easily or frequently then several things could be happening. First check the shower head volume if shower's are too quick. A new shower head puts out about 2.5 gallons a minute. Some older heads put out 5 gallons a minute. Working with the shower head would double shower length in this case. In some cases, the dip tube on the cold water inlet has broken or worn. When this happens, it creates a short loop for the water, water at the bottom half of the tank will not be used, which makes half of your tank useless.