How much does tankless water heater installation cost in Georgia?

What the job involves

Inside a tankless unit, a flow sensor fires a gas burner or switches on electric elements the moment a tap opens, and the water heats as it passes through. Hung on a wall, the unit frees floor space, but its gas, water and vent connections often have to move from where the old tank had them.

That is why a tankless installation is often a conversion rather than a swap, while a tank water heater replacement, the like-for-like job, is priced separately. Your city or county may require a permit.

What moves the price

Gas pipe and shared load

A tankless unit can burn gas far faster than a tank heater, and it shares the pipe with any gas furnace, range or dryer in the house. The plumber has to check that the pipe can supply them all together, and a longer run or a larger pipe adds to the price.

Electrical load

An electric tankless unit draws a lot of power and can call for heavy wire and large breakers. Some homes need their electrical service upgraded to carry it, which is separate electrical work and can cost more than the wiring itself.

Condensing or standard

A condensing gas unit pulls extra heat from its exhaust and usually costs more, but it vents through plastic pipe, while a standard unit often needs pricier stainless steel vent pipe. A condensing unit also makes acidic condensate that needs a drain, and some installs add a neutralizer.

Incoming water temperature

A unit's flow rating depends on how much it has to warm the water, and water coming into the house is colder in winter. Plumbers who size for winter water may choose a larger unit, which costs more.

Flush valves and scale

Minerals in the water leave scale inside a tankless unit, and many makers call for periodic flushing. Service valves that make flushing easy add parts to the installation, and in hard-water homes a scale filter may be added as well.

Waiting for hot water

A tankless unit makes hot water on demand but does not shorten the trip through the pipes to a far tap. A recirculation pump, which keeps hot water moving through the pipes, is an add-on for homes where the wait bothers people.

Getting a quote

Questions to ask each plumbing company before you compare prices:

1. Is this a gas or an electric unit, and what will change at the gas line, the vent or the wiring?
2. Is the unit condensing, and where will its condensate drain?
3. How did you size the unit for the ways my household uses hot water at the same time?
4. Are service valves for flushing included, and will you add a scale filter?
5. Will hot water take longer to reach my far taps, and what would a recirculation pump add?
6. Who does the electrical or gas work, and is it in this price?

Where this number comes from

We collect these prices with our own crawler, which reads the public websites of Georgia plumbers and follows each site's robots.txt rules. It has read 524 of their websites so far. Each range is the middle half of the prices those businesses post, collected September and October 2026.

A price list is what a business says it charges; a cost guide is a business's own estimate of what the job usually runs in Georgia. We never name the businesses behind a range. How we collect and check plumbing prices.

See a price that looks wrong? Tell us.

Keep reading

• Guide: Tank or tankless water heater: what does each cost?
• Tank water heater replacement
• Water heater repair
• Plumber service call fee
• Plumbing prices in Georgia