Doing all the troubleshooting for the heater all by you is somehow challenging. It will depend if the issue is just simple. Then you can go ahead, fix it. Common problems tend to ask for professional help. As you've done with the troubleshooting and are sure something is wrong, call the expert to restore the machine. It will be difficult for you to do the activities at home without hot water, but if possible, exhaust all possible effort before calling an emergency service. Options for Repair or Replacement If the water system at home needs significant repairs, ask for an estimate or quote before giving the go-ahead. Expect that the repairs can be inexpensive. A costly repair indicates that your hot water system will soon need replacing. Make a comparison of the cost of repairs versus the replacement. As you decide, you may save money in the long run if you replace your water heater instead of repair it. A higher capacity hot water system if you tend to run...