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Dorchester Center, MA 02124

Why is my water heater leaking from the top vent?

A very common cause of gas hot water heater leaking from the top is a malfunctioning or damaged temperature and pressure valve, also known as a temperature-pressure relief valve. You may have to replace it or check the heat and pressure inside the tank.

What do I do if my water heater is leaking from the top?

What to do: Inspect the expansion tank to determine where the leak is located. If the leak comes from the pipe fiting (seen at the top of the tank), try using a wrench to tighten the fitting. If the leak comes from the tank itself, though, you’ll need a professional to repair or replace the expansion tank.

What is the plug on top of water heater?

Leaking Pressure Relief Valve The temperature and pressure relief valve (T&P valve) is located on top of your water heater, and acts as a safety valve to release excessive pressure or water in case of overpressurization or thermostat failure. This valve is typically located at top center of the tank.

How long will a hot water heater last once it starts leaking?

Depending from where it is leaking now it may be repairable, Such as a fitting or valve. If the tank itself is leaking it is already past its useful life and will need to be replaced. The usual functional life of an average domestic hot water heater is around twelve years, fifteen is pushing it.

Can an electric water heater explode?

While rare, residential water heater explosions do occur and can be deadly. Explosions are possible with both gas and electric tank water heaters, primarily those that are poorly maintained.

Can I still use water heater if it is leaking?

If you have a leaking gas-powered water heater, we recommend that you shut off the gas supply before working with the tank. There should be a dedicated gas shut off valve on the gas line leading to the tank. See below for a visual illustration of a gas water heater shut down.

Where is my water heater leaking?

Check the Bottom of the Heater The drain valve, located at the bottom of the tank, is the likely source of water heater leaks. Check the drain valve for escaping water. In the case that a small drip is occurring, a garden hose cap or sprayer makes a quick leak fix until the valve can be replaced.

Can a leaking water heater be fixed?

If the leak is here-good news-the repair is simple and relatively inexpensive. You just need a plumber to replace the faulty drain valve. However, if the leak is coming from the tank, you’ll need to replace the water heater.

How much does it cost to replace a hot water heater?

Hot Water System Installation Cost & Price Range

Hot Water System Type Avg. Hot Water Price
Instantaneous or Continuous Flow Electric Hot Water System $750 to $1500
Gas Hot Water System with Storage Tank $880 to $1525
Instantaneous or Continuous Flow Gas Hot Water System $785 to $1625

What is the life expectancy of an electric hot water heater?

Based on the manufacturer’s suggested service life, the life expectancy of a water heater is about eight to 12 years. That varies with the location and design of the unit, quality of installation, maintenance schedule and water quality.

How do you know a water heater is going bad?

Signs Your Hot Water Heater Is Going to Fail

  1. Water leaking from the heating tank. …
  2. Age of the water heater. …
  3. Running out of hot water quickly. …
  4. Inconsistent water temperature in the shower. …
  5. Discolored water coming from faucets. …
  6. Unusual noises coming from the water heater. …
  7. Lower water pressure.

How common is it for a water heater to explode?

Water heater explosions are rare but when they do happen, they can be devastating. Do not wait for a catastrophe. Here are a few signs your water heater will give before going burst. The pressure relief valve is usually located at the top of heater, on the side.

Is a leaky water heater an emergency?

A leaking water heater could be a sign of a major problem. The worst-case scenario could be an explosion if water is leaking due to the pressure being too high. For this reason, if you notice your water heater is leaking, you should call an emergency plumber right away.

What happens when your water heater is leaking?

Even a small amount of water leaking from your water heater can cause damage to your floors, sub-floors and walls. A significant flood could lead to hefty repair bills and damage to personal property. Water heater leaks can also be a health concern and lead to mold and mildew.

How do you stop a water tank from leaking?

How much does it cost to fix a leaking water heater?

The Costs of Repairing a Water Heating Unit. According to a study carried out by, the average cost to repair a water heater is $501, with most homeowners spending between $203 and $800 for just one repair. As with any home appliance, fixing some components will definitely cost more than others.