Electric Water Heater Repair & Installation in Dallas, GA

Electric water heaters are quieter than most appliances, so a new noise tends to get noticed. When Alpha Plumbing and Sewer is asked about a noisy heater in Dallas, the sound itself is often the first clue: some noises are harmless, some point to mineral buildup, and a few deserve attention soon.

Sounds that are usually nothing to worry about

A light ticking from the pipes on top of the tank is common while the heater runs or just after hot water is used. Copper and steel expand and contract as they warm and cool, and the heat-trap fittings at the connections can tick as well. A faint click when a thermostat switches is also normal. These sounds do not change the heater's performance.

Crackling, sizzling and popping

These are the noises people most often call about, and they almost always involve minerals. Over time, dissolved minerals come out of the water as it heats. Some form a crust on the heating elements; the rest settle as sediment on the bottom of the tank. When an element coated in scale heats up, water boils in tiny pockets against it, which sounds like sizzling or crackling. When sediment piles up deep enough to bury the lower element, water trapped beneath it flashes to steam and pops.

The noise is a symptom, not the problem. Scale makes an element run hotter and fail sooner, and heavy sediment takes up room that should hold hot water, so the supply shrinks.

Humming, whistling and banging

• Humming can come from an element that vibrates as cold water flows past it, sometimes because it has worked slightly loose.
• Whistling or screeching often means water is squeezing through a valve that is partly closed, such as the cold-water shutoff on the inlet.
• A hiss with steam or water at the relief valve pipe means the valve is opening because temperature or pressure is too high; turn the breaker off and call.
• Banging in the pipes when a faucet or washer valve snaps shut is usually water hammer, which is often tied to high house pressure and handled through water pressure and PRV service.

How a noise call usually goes

The technician listens to the heater while it is heating, since the timing of the sound narrows the cause. Then the breaker goes off and the power is verified dead. A few gallons are drained from the bottom valve to see how much sediment comes out. An element can be pulled to inspect its scale, and the valves are checked for full opening. House pressure may be measured if the relief valve or water hammer is involved.

Fixes, from simple to final

Flushing the tank clears loose sediment and often quiets popping, particularly on a heater that is still fairly young. A scaled element can be replaced, and a low-watt-density element, which spreads its heat over a larger surface, tends to hold up better where minerals are heavy. A partly closed valve just needs to be opened or replaced. On an older tank where flushing barely makes a dent, the sediment is often hardened, and replacement becomes the sensible step. At that point a tankless water heater is one alternative to compare, and Alpha's overview of water heater options sets out the rest.

Permits and inspections in Dallas

The city's Community Development Department issues residential plumbing permits and asks applicants to confirm first, through the county assessor's records, that the address lies inside city limits. Before a replacement, ask the department whether the swap needs a permit.

Noise questions Dallas homeowners ask

Is a popping water heater going to burst?

Popping on its own is a sediment problem, not a sign the tank is about to rupture. The heater has a relief valve to guard against dangerous pressure, and that valve should be in working order. Ignoring the popping, though, lets sediment shorten the life of the lower element and the tank, so it is worth dealing with.

Is a humming water heater normal?

A faint hum while an element heats can be normal, particularly as cold water flows past it. A louder or newer hum often means an element has worked slightly loose in its fitting, which should be checked with the power off. A buzz from the junction box, the access panels or the breaker is different: it points to an electrical fault, so switch the breaker off and have it tested.

Why does my heater sizzle only while heating?

Sizzling during a heating cycle usually comes from scale on an element, where water boils in small pockets against the hot surface. It stops when the element switches off. A sizzle that continues with the power off is different and may be water dripping onto a hot surface or seeping at a gasket, which needs a closer look.

Quiet the tank

If the heater in your Dallas home has started crackling, popping or banging, call Alpha Plumbing and Sewer at (404) 409-4448 and describe when the sound happens; that timing is often the first clue.