Base of a new gas water heater with gas valve, burner panel and yellow gas line

Fuel matters

Gas Water Heater Replacement

Replacing a natural gas tank heater with attention to venting, gas connections, combustion air and the safety checks that gas equipment needs.

Gas Water Heater Replacement for Snellville area homes

Gas water heaters are common in Gwinnett County homes, and many families like them for their quick recovery after a busy morning. When a gas tank reaches the end of its life, the replacement deserves more care than simply dropping in a new tank.

Gas water heater replacement in Snellville involves the gas supply, the flue that carries combustion gases outside, and the air the burner needs to run cleanly. Each of those has to be right for the heater to work safely.

Signs your gas tank is ready to go

Rust at the burner area or base

Corrosion inside the combustion chamber often means water is reaching places it should not.

A pilot or burner that keeps failing

On an older tank, repeated control trouble can be the sign to stop repairing.

Soot or scorch marks near the top

Marks around the draft hood can point to a venting problem, which should always be checked promptly.

Water around the base

If the tank body is leaking, replacement is the only lasting fix.

What a gas replacement covers

Shutting off gas and water and draining the old tank
Fitting a new gas connector and checking connections for leaks
Inspecting and fitting the vent connector to the flue
Confirming the space has adequate combustion air
Installing the relief valve discharge line
Lighting, adjusting and testing the burner and draft

Step by step

1
Safety first
Gas is shut off at the appliance valve before any disconnection begins.
2
Remove the old unit
The tank is drained and carried out along a protected path.
3
Set and connect
The new heater is leveled and connected to water, gas and venting.
4
Light and verify
Once filled, the burner is lit and the vent is checked to confirm it is drawing properly.

Staying with gas or switching fuel

Most homes with an existing gas heater stay with gas because the supply line and venting are already in place. A like for like gas swap is also the easiest path for a same day replacement.

Some homeowners explore a tankless gas unit for endless hot water, or a hybrid heat pump model that runs on electricity. Both are possible, but they bring different gas line, venting or electrical needs. The tankless installation and hybrid installation pages explain what changes.

This service is available in Snellville and the nearby communities listed on our service areas page. For broader questions, the water heater FAQ covers the basics.