What Should I Do About Water Damage From a Water Heater Leak?
Once the leak is stopped, get standing water out right away, then dry everything that got wet within 24 to 48 hours. Photograph and film the damage before you clean up, and keep any failed parts. If water soaked into walls, subfloors or carpet pad, or you can't dry it fast, call a water damage restoration company.
This post starts after the water is off. If it's still coming out, stop here and use our guide to shutting off a water heater first, or call us at +1 480-863-0807.
One thing to be clear about: Apache Junction Water Heater Pros fixes and replaces water heaters. We are not a water damage restoration company. We don't dry out structures, remove mold or rebuild walls. What follows is what homeowners can do themselves, and how to tell when the job needs a restoration pro.
Step 1: Get the Standing Water Out
The longer water sits, the further it wicks into drywall, baseboards and flooring. Move fast, but safely.
Safety: If water has reached outlets, cords or the electrical panel, don't walk through it. Shut off power to that area at the breaker only if you can do it from a dry spot. Otherwise wait for help.
- Wet vacuum is the fastest way to pull water off a slab, tile or carpet. Towels and mops work for small puddles.
- Move stored items out of the garage or closet: boxes, paper, rugs, anything that soaks water up.
- Lift furniture onto blocks or foil so legs don't stain or swell.
- Pull up loose rugs and mats and hang them somewhere they can dry, or toss them if they were sitting in water for a long time.
Step 2: Dry Everything Within 24 to 48 Hours
This is the step that matters most. Mold can start growing within 24 to 48 hours in damp materials, so the goal is to get wet surfaces dry inside that window.
- Air movement. Run fans aimed along wet walls and floors, and open closet and garage doors to let damp air out.
- Dry air. A dehumidifier helps in closed rooms and closets. Our desert air helps outside, but a shut closet or garage can stay damp for days.
- Open things up. Pull baseboards off wet walls so air reaches the bottom of the drywall. Leave closet and cabinet doors open.
- Check under things. Water spreads under vinyl plank, laminate and cabinet bases where you can't see it.
How do I know if it's actually dry?
Surfaces can feel dry while the material inside is still wet. Drywall that's soft, swollen or stained at the bottom, baseboards that have puffed up, or a musty smell a few days later all mean moisture is still there. Restoration companies use moisture meters to confirm it. If you have any doubt, that's a good reason to call one.
What Gets Wet in Apache Junction Homes
The damage depends a lot on where the heater sits, and homes here put water heaters in a few typical spots.
Mobile home floors
About 46% of local homes are mobile or manufactured. Their floors are often particleboard, which swells and loses strength when it soaks up water and usually doesn't recover. Water can also run into the insulated belly under the home and sit there unseen.
Garage drywall and platforms
Garage heaters often sit on a wood frame covered in drywall. Both soak up water from the bottom. Garage walls behind the heater are usually drywall too, and wet drywall crumbles at the base.
Baseboards and trim
MDF baseboards in many homes swell and split when wet. They're cheap to replace, but pull them off early so the wall behind them can dry.
Carpet and pad
Carpet next to a hall closet heater can sometimes be dried, but the pad under it holds water like a sponge. Wet pad is usually cut out and replaced.
What if my mobile home floor feels soft by the heater closet?
Stay off the soft area, and don't set a new heater on it. Particleboard that has swollen usually has to be cut out and replaced before anything heavy goes back. Our mobile home water heater page explains why these closets need extra care, and a soaked garage platform is covered on our stand replacement page.
Step 3: Document It Before It's Gone
Do this as you go, before cleanup moves things around: wide photos and close-ups of the heater and every wet wall, cabinet and belonging, plus receipts for fans, dehumidifiers or a wet vac rental. Keep any failed part, and ask before the old tank or wet materials go out. The full checklist an insurer may want is in our insurance guide below.
Whether any of it is covered depends on your policy and on how the leak happened. How insurers usually look at it is covered in our water heater leak insurance guide. If you have a home warranty, call the warranty company before hiring anyone; our home warranty claim guide explains how those usually work.
When to Call a Water Damage Restoration Company
A small puddle on a garage slab is a towel-and-fan job. Bigger or hidden water needs people with drying equipment and the skills to open and rebuild walls. Call a restoration company if:
- Water soaked into drywall, wall cavities or a subfloor, not just the surface.
- Carpet and pad in living areas got wet.
- A mobile home floor is soft, or water got into the belly under the home.
- You can't get things dry within a day or two.
- You see or smell mold, or anyone in the home has breathing problems.
- The leak ran for a long time, for example while you were away for the summer.
Your insurance agent may suggest a company, and you can also choose your own. We'll happily give you written findings about the heater for them.
Checks After the Heater Is Fixed
Once the heater is repaired or replaced and the area is dry, a few checks over the next couple of weeks catch problems early.
- Look at the base every few days. A dry floor and dry pan mean the fix is holding.
- Sniff the closet. A musty smell that shows up a week later means moisture is still trapped somewhere.
- Watch the walls. New stains, bubbling paint or soft spots at the bottom of drywall should be checked.
- Check the floor. Press on the floor around the heater, especially in mobile homes. Soft spots can show up after drying.
- Add protection. A drain pan with a line to a safe spot, and possibly a leak sensor, makes the next leak far smaller.
If a wall or floor stays damp after the heater has been fixed, the water may be coming from somewhere else. Our water heater leak detection visit traces hidden leaks near the heater. Snowbirds can avoid a summer-long leak with the shut-down steps in our snowbird water heater checklist.
For the leak itself, our Apache Junction leak repair service is open 24/7, and the water heater FAQ has quick answers on everything else. If you're not sure where the water came from in the first place, our leak-finding guide starts at the top of the tank and works down.
Water Heater Leak Water Damage: FAQs
Can wet drywall from a water heater leak be saved?
Sometimes. Drywall that got wet briefly and dries within a day or two, with no swelling, crumbling or staining, can often stay. Drywall that sat wet, went soft at the bottom or smells musty is usually cut out and replaced. Pulling baseboards early and running fans gives it the best chance. A restoration company can check moisture inside the wall.
Should I throw out a carpet pad that got wet from the water heater?
Usually, yes. Carpet pad soaks up water and is hard to dry all the way through, so it's often cut out and replaced even when the carpet above it can be dried. Water from a heater is generally clean, which helps, but a pad that stays damp for more than a day or two is a mold risk.
Is water from a leaking water heater clean or dirty?
Water from the tank starts as clean tap water, though it may carry rust and sediment. It's generally treated as clean water, which is easier to deal with than sewage. That changes the longer it sits, especially on carpet and wood, so dry it quickly. Drain pan water that sat for weeks should be handled with care.
How long do fans need to run after a water heater leak?
Usually two to three days for a small area, and sometimes longer for a closet, cabinet base or wall cavity. Keep them running until surfaces are dry to the touch and there's no musty smell. Closed spaces dry much slower than open garages. If walls still feel damp after a few days, call a restoration company to measure moisture.
Do I need a new water heater after a leak caused water damage?
Not always. If the leak came from a valve, fitting or connector, that part can be fixed and the heater kept. If water came from the tank itself, the heater needs replacing. Either way, make sure the floor or platform under it is sound and dry before the heater is reset or a new one goes in.