Water Leak Detection & Repair in McDonough, GA

A leak on a hot water line leaves an extra set of clues behind. Hot water carries heat as well as volume, so a hidden hot-side leak can show up on the energy bill, in the behavior of the water heater, and as warmth in a wall or floor where none belongs. Alpha Plumbing and Sewer uses those signals in McDonough homes to separate hot from cold early and focus the work on the right set of pipes.

Signs that point to the hot side

• The water heater seems to fire or heat more often than usual, even when nobody is using hot water.
• The gas or electric bill rises along with the water bill.
• A warm patch on a tile or concrete floor, or one spot on a wall that feels warm to the touch.
• Hot water runs out sooner than it used to.
• The sound of water moving near the heater when every fixture is off.

None of these proves a leak on its own. A heater can also run more because of a failing element, sediment in the tank or a thermostat problem, which is why a test comes next.

Confirming a hot-side leak

With all fixtures off, check whether the meter shows water moving. If it does, close the cold-water valve that feeds the water heater. If the meter then stops, the escaping water was passing through the heater, so the leak is somewhere on the hot side or at the heater's own connections. If the meter keeps moving, look to the cold side instead. A touch check adds a hint: an outlet pipe at the heater that stays hot long after the last tap was used suggests hot water is still flowing somewhere.

Tracing the hot line

Thermal imaging is especially useful here, because a leaking hot line warms the material around it. The camera can follow the warm trail along a wall or across a slab floor, and the brightest area often sits close to the leak. Acoustic equipment then confirms the spot. In houses with a hot water recirculation system, the loop keeps water moving at all times, which blurs the picture; switching the recirculation pump off during testing removes that confusion.

Why hot lines fail

Heat speeds up corrosion in metal pipe, and daily heating and cooling makes pipes expand and contract slightly. Over the years that movement can wear a pipe where it rubs against framing, a strap or concrete, and it puts stress on joints. High water pressure and the fast flow in recirculation loops add their own wear. Knowing which factor caused the leak helps decide whether a single repair will be enough.

Repairs on the hot side

A leak inside a wall is usually repaired by cutting out the damaged length and splicing in new pipe, with an opening sized to the work. Under a slab, the choice is between opening the floor at the leak or abandoning that section and running a new hot line through the walls or attic. When several hot-side leaks occur, or the pipe shows wear in more than one place, whole house repiping is worth discussing. If testing clears the pipes and the heater itself is at fault, the next step is gas water heater or electric water heater repair.

McDonough permits for hot-line repairs

Within McDonough, plumbing permits and construction inspections are handled by the city's Building & Inspection Division. If a hot-line repair turns into rerouting or replacing pipe, ask the division whether a permit applies before the work begins.

Questions about hot water line leaks in McDonough

Can a hot water leak make my water heater run all the time?

Yes. A leak on the hot side keeps drawing hot water out of the tank while cold water flows in to replace it, so the heater keeps working to bring the temperature back up. A tankless unit can also keep firing if the leak is large enough to trigger it. If the heater seems busy while the house is quiet, a meter test with its cold inlet closed is a good next step.

Is a warm spot on the floor always a slab leak?

No. Radiant heating, ductwork under the floor, sunlight on the slab or a nearby appliance can all warm a spot. A hot-line leak usually produces warmth that stays in one area or follows a line, along with meter movement when the fixtures are off. Thermal imaging and a meter test together give a far clearer answer than touch alone.

Should I turn off my water heater if I suspect a hot-side leak?

Closing the heater's cold inlet valve stops water from flowing to the hot side and slows the leak. If the heater will sit that way for long, turn off its power or gas as the manufacturer's instructions direct. Leave the rest of the cold supply on so toilets and cold taps keep working until the repair is made.

Trace that hot spot

If your McDonough water heater seems to be working overtime or a floor feels oddly warm, phone Alpha Plumbing and Sewer at (404) 409-4448. Learn more about locating hidden leaks in our Georgia leak detection overview.