Whole House Repiping in Lithonia, GA

Every hot water line in a house begins at one appliance, so any whole house repiping plan has to account for the water heater. The new cold line feeds it, the new hot trunk leaves from it, and the valves and fittings around it are among the hardest-working parts of the system. Alpha Plumbing and Sewer looks closely at the heater during each repipe walk-through in Lithonia, because the choices made there shape the rest of the job.

What gets renewed at the heater

A repipe normally replaces the piping right up to the heater's connections:

• The cold supply line and its shutoff valve, which lets the heater be isolated for service without shutting off the whole house.
• The hot outlet line that carries water to the rest of the house.
• Connectors and fittings at the tank; where copper pipe meets the heater's steel nipples, a dielectric fitting that separates the two metals helps slow corrosion at the joint.
• Supports and insulation on the first stretch of hot pipe.

The relief valve and its discharge pipe belong to the heater. They deserve a look during the work, and whether they are replaced depends on their condition, so ask for that to be written into the scope one way or the other.

Room for expansion

Water grows slightly in volume as it heats. In a house with a pressure-reducing valve, a check valve or a backflow device at the main, that extra volume cannot push back toward the street, and pressure climbs every time the heater runs. An expansion tank near the heater absorbs it. A repipe is a natural moment to confirm whether the house needs one and whether the existing tank still works. A regulator that no longer holds steady pressure needs its own pressure-reducing valve repair.

Replace the heater now or later?

If the heater is near the end of its expected life, seeping at the base or delivering rusty hot water, replacing it alongside the repipe means the connections are made once and the water is shut off once. If it is fairly new and sound, the new pipe simply connects to it. Replacing a gas water heater or an electric water heater can be booked for the same tie-in day.

Moving the heater or changing type

A repipe opens a chance that rarely comes up otherwise: putting the heater in a better spot. Moved closer to the main bathrooms, it shortens the wait for hot water; moved out of a finished room, it lowers the stakes of an eventual tank leak. Relocation involves more than plumbing, though. A gas unit needs venting and a gas line at the new location, an electric one needs a suitable circuit, and both need a plan for where the relief valve discharges and, in many locations, a drain pan. Switching to a tankless water heater raises questions about gas supply, venting and flow rate, and those should be settled before the new lines are laid out.

Pipe material close to the heater

The pipe at the heater sees the highest temperatures in the house. PEX manufacturers specify how close their pipe may run to a gas heater, which is why the first stretch from the tank is often a metal connector or a short piece of copper. Copper handles the heat without that concern but needs a proper transition to the tank fittings. In every case, the heater maker's installation instructions and the pipe maker's limits govern. The overview of whole home repiping compares materials more broadly.

Lithonia permits for the heater and the pipe

The city's Building and Permitting Division reviews plans, issues trade permits and inspects the work. Its checklist of when a permit is needed names fixture work that alters piping and water heater replacement, so a repipe that includes a new heater involves both. The city issues them to contractors holding a license, or to an owner-occupant who files a notarized homeowner affidavit.

Questions about water heaters and repiping in Lithonia

Will the water heater be off during the repipe?

Only for part of it. Most of the new piping can be run while the old system keeps working. The heater is disconnected when the new lines are tied in, and it should not be switched on or lit until the tank is full again, because an electric heater powered with an empty tank can burn out its elements. Ask the plumber to handle the restart or to walk you through it.

Do I need an expansion tank with new pipes?

It depends on how the main is set up rather than on the new pipe. A pressure-reducing valve, check valve or backflow device keeps heated water from easing back toward the street, and without a tank the pressure spikes each time the heater runs; a relief valve that drips now and then is a common clue. The plumber can confirm whether your system is closed during the walk-through.

Is a separate permit needed if the heater is replaced along with the pipes?

Ask before anyone applies. Both the repipe and the new heater are on the city's list of permitted work, and whether they go on one application or two is for the Building and Permitting Division to say. Your plumber should confirm that when applying and make sure both are inspected before the walls close.

When the heater is due as well

If your water heater is due for attention along with the pipes, call Alpha Plumbing and Sewer at (404) 409-4448, and we will plan the heater and the repipe in your Lithonia home as one job.