The short answer: ask what is in the quote
A quote that lists only a total price tells you nothing. A useful one separates the heater, the labor, the parts that connect it and any code upgrades. When two quotes differ by a large amount, the difference is almost always in those lines, not in the plumber's skill.
We give a price before work starts and do not publish ranges here, because a range without your house in front of us would be a guess. Call (770) 214-4545 and describe your setup, and we tell you what applies.
Six things that move the price
Tank size
A forty-gallon unit and a seventy-five-gallon unit are different products. Choose by the number of people and the number of showers back to back.
Fuel
Gas, electric and tankless units differ in cost, in installation and in what they cost to run.
Location
A heater in a garage is easier than one in an attic or a tight closet.
Venting and gas
Gas units need a vent that is sound and sized right, and a gas line that is safe.
Code items
Expansion tanks, drain pans, seismic straps where required and a proper discharge pipe may be needed.
Old fittings
Corroded shutoffs and supply lines are replaced while the system is open.
Tank or tankless: how the choice changes the number
A tankless unit costs more up front and often changes the gas line size, the venting and sometimes the electrical service. It can save space and last longer. A tank costs less to put in and is simpler to service. Our tankless water heater page lays out the trade-offs in plain terms, and we do not push either one.
| Choice | Upfront effort | Later considerations |
|---|---|---|
| Standard gas tank | Moderate | Vent and gas line checked |
| Standard electric tank | Moderate | Electrical circuit capacity |
| Tankless gas | Higher | Larger gas line, new vent, descaling |
| Tankless electric | Higher | High electrical demand, panel capacity |
Is your heater repairable?
Before replacing, ask whether a repair is enough. A failed element, thermostat or pilot assembly is often a repair. A tank that leaks from the shell is finished. See water heater repair for the signs that point each way. If the unit is old and the repair is large, replacement is often the better value, and we say so plainly.
Permits and who inspects
Water heater replacement can require a permit depending on the work, and rules vary by address. The City of Tucker permit team can tell you what applies to yours. Tucker's Building and Permitting office inspects at stages, while the county handles water and sewer. We describe the planned work so the question you ask them is specific.
How to compare two quotes
- Confirm both quotes cover the same tank size and fuel type.
- Ask whether venting, a drain pan and an expansion tank are included.
- Ask who removes and disposes of the old unit.
- Ask what the warranty covers and who handles claims.
Insurance and warranty
Insurance seldom pays for a worn-out water heater, but it can respond to damage from a sudden failure. Keep photos and the plumber's report. The manufacturer's warranty usually covers the tank and parts but not labor, so ask what the installer's own labor guarantee covers.
Want a real number?
Describe your heater and the closet it lives in, and we give you a price before work starts.
Questions to ask before you approve the work
A good quote answers questions you did not think to ask. Does the price include hauling away the old tank? Is the gas line, the vent connector and the drain pan part of the job, or an add-on? Who pulls the permit if one is needed, and who schedules the inspection? Each answer removes a surprise from the final invoice.
Ask also about the shutoff valve. If the cold supply valve above the heater is old and will not close fully, a plumber who replaces the heater without replacing the valve has left you with the same problem the next time. It is a small part, and leaving it out is the kind of saving that costs more later.
A realistic timeline for the day
Shut down and drain
The water, power or gas are turned off and the old tank is drained, which takes time when the tank is full of sediment.
Remove and prepare
The old unit is disconnected and carried out. The pan, fittings and vent are checked.
Set and connect
The new heater is set level, connected to the supply lines, the vent and the gas or electric feed.
Fill, test and light
The tank is filled and air is bled from the lines before power is restored. Gas connections are leak tested.
Walk through
The plumber shows you the shutoff, the relief valve and the thermostat setting.
Most tank replacements finish within a working day when nothing unexpected turns up. Venting problems, rotted shelves and corroded fittings are the usual causes of a longer visit, and they are the reason a plumber should look at the closet before quoting.
Mistakes that raise the cost later
- Choosing a tank too small for the household, then running out of hot water every morning.
- Skipping the expansion tank where the plumbing is closed to pressure, which can stress fittings.
- Setting the thermostat too high, which wastes energy and raises scald risk.
- Ignoring a shutoff valve that does not close, which makes the next repair harder.
- Buying on price alone without comparing what each quote includes.
Local note: water source and your heater
Tucker's water is Chattahoochee River water treated at the Scott Candler plant, delivered by DeKalb County Watershed Management. The 2026 report, which covers 2025 testing, does not give a hardness number we can quote, so a simple home test kit is the honest way to know what your heater faces.
Across the line, Gwinnett County names Lake Lanier as its sole water source. If you live in Lilburn or Norcross, the source is different but the advice is the same: test the tap before you buy a heater.
Questions we hear from homeowners
Many tank units run around a decade or more, depending on water quality and maintenance. Flushing and checking the anode rod can help.
If it is old and has started leaking, rust-colored hot water or rumbling, planning ahead usually costs less than an emergency.
The DeKalb County report we reviewed gives no hardness figure for your tap, so test your water. Hard water leaves scale that shortens a heater's life.
Yes. Tell us the model so we can check fit, venting and parts before the visit.
Yes. We cover Lilburn and Norcross as well as DeKalb addresses.