There could be several reasons for a water leak under a water heater. Some possible causes include:

• A faulty or damaged water heater: The water heater itself may be leaking due to a crack in the tank or a faulty valve.

• Corrosion: Over time, the water heater tank can corrode, especially if the water in your area is particularly hard or corrosive. This can lead to a leak.

• Loose or damaged connections: If the connections between the water heater and the water supply lines are loose or damaged, this can cause a leak.

• Temperature and pressure relief valve: The temperature and pressure relief valve is a safety feature that prevents the water heater from overheating or building up too much pressure. If this valve is faulty, it can cause a leak.

It’s important to address a water leak as soon as possible, as it can cause damage to your home and increase your water bill. If you’re unable to identify the cause of the leak or don’t feel comfortable attempting to fix it yourself, it’s best to call a plumber for assistance.

There are several reasons why you might not be getting enough hot water, or as much hot water as you used to:

• Insufficient hot water supply: If your water heater is not large enough to meet the demand for hot water in your home, you may not have enough hot water.
• Water heater is not working efficiently: If your water heater is not working as efficiently as it should, it may not be able to produce enough hot water. This could be due to a variety of factors, such as a faulty heating element, sediment build-up in the tank, or a malfunctioning thermostat.
• Leaks in the hot water system: If there are leaks in the hot water pipes or at the water heater itself, this can cause a loss of hot water.
• Increased hot water demand: If there has been an increase in the number of people living in your home or an increase in the amount of hot water being used, this could also lead to a decrease in the amount of hot water available.

To determine the cause of the issue and find a solution, it may be helpful to consult a plumber or a professional who specializes in water heaters. They will be able to diagnose the problem and recommend the appropriate course of action.

There are a few potential causes for a “rumbling” noise coming from a water heater:

• Sediment build-up: If there is a build-up of sediment in the bottom of the water heater tank, it can cause a rumbling noise as the water is heated. This is because the sediment can obstruct the flow of water and cause it to swirl around the tank, creating a rumbling sound.

• Expansion and contraction of the tank: As the water in the tank is heated, it expands, and as it cools, it contracts. This expansion and contraction can cause the tank to make a rumbling noise.

• Loose parts: If there are loose parts inside the water heater, such as the heating element or the thermostat, they may move around and cause a rumbling noise.

It’s important to address the issue of a rumbling noise coming from your water heater, as it could indicate a problem with the appliance. If you’re unable to determine the cause of the noise or don’t feel comfortable attempting to fix it yourself, it’s best to call a plumber or a professional who specializes in water heaters for assistance.