Imagine being in the shower, enjoying the hot water on your back, when all of a sudden your relaxing shower turns icy cold. It's no longer relaxing then. If this happens to you, you're going to need to do something about it, unless ice-cold showers are what you prefer. If not, read on for a few things you can check and repair on your own.
1. Thermostat Changed
The thermostat on your water heater may have gotten changed, which can occur if someone bumped it or made an adjustment without realizing it. Adjust the thermostat on the water heater so it is set to a hotter setting. If the thermostat wasn't changed, the gas may have been turned off. Check that the gas is also turned on.
2. Water Heater Too Small
If you've had a lot of people showering in your home, it could be that your water heater isn't able to keep up with your household demand. You may have extra house guests in your home, or maybe you've just moved into a new home. If your water is turning cold before your shower ends, it could be that it just can't keep up and is too small. Investing in a larger-sized water heater may be a better idea so you can enjoy a hot shower all the way through to the end.
3. Water Heater Core Clogged
The core of your water heater may be clogged with debris from your water. A calcium or mineral buildup can settle to the bottom of your water heater, which will then block the heater core at the base of the water heater. If your water heater core is blocked, it isn't going to be able to heat your water well enough. To clean up this buildup, you're going to have to drain the water in your water heater and suck out the minerals built up in your water heater using a shop vacuum. When doing this job, you'll need to turn off the gas to your water heater and be careful when draining the water, as it can be extremely hot when it comes out.
These are just a few of the things that could be the problem with your water heater not giving you hot water. If none of these things were the problem or you don't want to troubleshoot your water heater yourself, hire a professional plumber to service your gas water heater for you.