Water Heater Leaking: What to Do
Water is puddling around the base of the water heater, dripping from a pipe on the side or seeping from the tank. Here is what it usually means, whether it is an emergency and what to do now. One call connects you with a local crew, any hour.
A leaking water heater is either a loose or worn connection, a relief valve letting off water, or a tank that has started to fail. A failing tank can let go and dump its full volume onto the floor. Shut off the cold supply to the heater, turn off its power or set the gas control to off, keep clear of hot water, and call (203) 555-0163 to reach a local crew for the cleanup.
What This Usually Means
- Most common
Leak at a pipe connection on top
Water running down the outside of the tank from above usually comes from the cold inlet, the hot outlet or a fitting nearby. These leaks are often fixable without replacing the heater.
- Cause 2
Water from the relief valve pipe
The discharge pipe on the side is supposed to release water when temperature or pressure gets too high. A steady drip or a gush means the valve is opening or failing, and a plumber should check the heater and the home's water pressure.
- Cause 3
Drain valve near the bottom
A drain valve that was not closed fully or has worn out will drip at the base. Wiping it dry and watching whether the drip returns tells you if this is the source.
- Cause 4
Rust or seepage from the tank itself
Water coming from the bottom seam with rust staining, or a puddle with no drip from any fitting, usually means the inner tank is failing. That cannot be repaired, and the heater needs replacing soon.
Is It an Emergency?
Call now if
- Call now if water is pooling fast or the tank itself is leaking from the bottom.
- Call now if you smell gas near the heater, and leave the house to call the gas utility or 911 from outside.
- Call now if water has reached the electrical panel, the furnace, the boiler or extension cords.
- Call now if a finished basement, carpet or stored boxes are soaking up the water.
- Call now if the heater is in an attic, closet or upper floor and water is coming through a ceiling.
It can usually wait a few hours if
- It can usually wait a few hours if it is a small drip from a fitting on top and a pan is catching it.
- It can usually wait a few hours if the relief valve dripped once and has stopped.
- It can usually wait a few hours if the heater sits on bare concrete beside a floor drain and nothing nearby is getting wet.
- It can usually wait a few hours if you have closed the cold supply, turned off the power or gas, and the floor is drying.
Still call today: hidden moisture keeps spreading while it waits.
What to Do Right Now
- 1Close the cold supply Turn the valve on the cold water pipe that feeds the top of the heater. If it will not turn or water keeps coming, close the main shutoff instead.
- 2Shut off power or gas For an electric heater, switch off its breaker at the panel if you can reach it from a dry spot. For gas, set the control knob to off, and if you smell gas, skip this and leave.
- 3Watch for hot water The tank and the water around it may be scalding. Keep kids and pets away and wear shoes near the puddle, never bare feet.
- 4Clear the area Move boxes, tools and stored items off the wet floor, starting with anything cardboard, since it wicks water and falls apart.
- 5Leave draining to the plumber Draining a hot, leaking tank through a hose can cause burns and new spills. Unless the tank is cool and you know the steps, let the plumber handle it.
- 6Call for cleanup Call (203) 555-0163 and we connect you with a local crew to extract the water and check walls, flooring and nearby finished rooms for moisture.
How a Crew Finds the Source and Fixes It
Water heater leaks look obvious but can travel further than the puddle suggests. The crew checks moisture in the slab, the bottom of nearby walls and any carpet or flooring next to the heater, because water flows along the floor and wicks up drywall and baseboards. In a finished basement or a utility closet off a living space, a thermal camera shows how far the wet edge has moved under flooring. If the heater sits in an attic or on an upper floor, they also read the ceiling and framing below, which is where most of the damage hides.
The plumber decides whether the heater can be repaired at a fitting or valve or has to be replaced, and can set a drain pan if there is room. The restoration crew extracts standing water, pulls soaked carpet pad, baseboard and wet drywall to a cut line, and dries the space with dehumidifiers and air movers. Stored belongings that got wet are sorted into items to dry, clean or discard. Before the walls are closed up, moisture readings confirm that the bottom plate, slab edge and any wet wall cavity are fully dry.
- 1
Make the heater safe
The crew confirms the cold supply is closed and the power or gas is off, then checks for scalding water and electrical hazards around the tank.
- 2
Measure the spread
Moisture meters and thermal imaging map wet flooring, baseboards and drywall around the heater, including the rooms on the other side of each nearby wall.
- 3
Extract and remove
Extractors pull water from concrete, carpet and pad, and soaked baseboard, insulation and drywall come out to a clean cut line above the wet edge.
- 4
Dry and monitor
Dehumidifiers and air movers run around the clock, and technicians log readings at each visit until the slab edge, framing and wall bottoms read dry.
- 5
Restore the space
After the plumber repairs or replaces the heater, new drywall, baseboard, paint and flooring go back in, and a drain pan or leak alarm can be added.
How to Keep It From Happening Again
- Look at it every month. A quick glance at the base, the fittings on top and the relief valve pipe catches rust and drips early, before the tank lets go.
- Install a drain pan. A pan under the tank piped to a drain will not stop a full failure, but it catches small leaks and buys time. Put a battery leak alarm in the pan.
- Flush it as the maker recommends. Sediment buildup makes a tank work harder. Follow the manufacturer's instructions for flushing, or have a plumber do it during a routine visit.
- Have the relief valve checked. Ask a plumber to look at the relief valve and its discharge pipe, and make sure the pipe runs down toward the floor or a drain where a release is easy to spot.
- Replace it before it fails. If the tank shows rust at the bottom seam, rumbles loudly or has needed repeated repairs, plan a replacement instead of waiting for a flood.
What It Costs
Water heater cleanup with drying generally runs between $1,500 and $6,500. A finished basement soaked by a failed tank can run $3,000 to $15,000 once carpet, pad and lower drywall are involved, and dehumidifiers add $60 to $150 per unit per day while air movers add $25 to $50 per unit per day. The heater itself is a separate plumbing cost. General market ranges, not quotes.
How Long It Takes
Drying around a leaking water heater usually takes two to four days on bare concrete and closer to four or five days in a finished room. Baseboards, drywall and flooring are typically rebuilt over the following one to two weeks.
Call (203) 555-0163Water Heater Leaking in Connecticut
Basements in Connecticut often hold the water heater next to the washer, the boiler and, on well homes, the pressure tank, so one failure can wet a lot of stored belongings and finished space. Older housing raises the odds of a tired heater. In New Haven County, New Haven's median home was built in 1950, and with only 30% of homes owner-occupied, many heaters serve rented units where the owner is not on site. In Fairfield County, Bridgeport's median year built is 1957. In New London County, New London's median home dates to 1945, among the oldest in the state.
When you call (203) 555-0163, tell us where the heater sits, whether the water is off, and what is getting wet. We connect you with a local restoration pro near you, and the crew can coordinate timing with your plumber so the replacement and the drying do not get in each other's way. Landlords can call about a tenant's unit too.
Water Heater Leaking FAQs
Is a leaking water heater an emergency?
It is when the tank itself is leaking, water is spreading toward finished rooms or electrical equipment, or you smell gas. A drip from a fitting on top is less urgent but still worth a same-day plumber visit.
Why is water coming out of the pipe on the side of my water heater?
That pipe is the relief valve discharge, and water from it means the valve opened because of high temperature or pressure, or the valve is worn. Turn the heater off and have a plumber check it, because the valve is a safety device.
Can a leaking water heater be repaired?
Leaks at fittings, the drain valve or the relief valve can often be repaired. A leak from the tank body cannot, and the heater needs to be replaced.
How do I shut off a leaking water heater?
Close the cold water valve above the tank, then switch off the breaker for an electric unit or set a gas unit's control to off. If anything smells like gas, leave and call from outside.
Does a water heater leak damage the walls?
Yes, often more than people expect. Water spreads under flooring and wicks up drywall and baseboards, so the crew checks the walls around and behind the heater with meters before deciding what to remove.
Who do I call about water Heater Leaking in Connecticut?
Call (203) 555-0163 any time. Calls are answered 24/7 in Fairfield County, Hartford County, Litchfield County, Middlesex County, New Haven County, New London County, Tolland County, Windham County, and you are connected with a local crew that can find the source and dry it out.
Other Pipes and Heating Problems
- Burst Pipe Spraying WaterWater is spraying or pouring from a split pipe, a broken fitting or a line hidden inside a wall or ceiling.
- Frozen Pipe With No Water at the FaucetThe faucet only sputters or gives nothing on a bitter cold morning, and you suspect a pipe froze overnight.
- Radiator or Boiler LeakingWater is dripping from a radiator valve, pooling under a baseboard heater or leaking around the boiler in the basement.
Water Heater Leaking? Call Now.
Calls answered 24/7. One call connects you with a local crew to find the source and start drying.