Tankless Water Heater Replacement in South Fulton, GA
Is your old tankless unit failing in South Fulton? Get dependable tankless water heater replacement from HGR Plumbing for your Georgia home.
- Dependable Hot Water
- Code Compliant
- Licensed Gas Line Technicians
- Experienced, Licensed Plumbers
Endless Hot Water Starts With One Call in South Fulton, GA.
Our certified plumbers are ready to install your new, efficient tankless water heater.
Professional Tankless Water Heater Replacement in South Fulton, GA
HGR Plumbing specializes in professional tankless water heater replacement across South Fulton, GA. If your current tankless unit is past its prime, constantly breaking down, or simply not meeting your hot water demands, it may be time for an upgrade. We handle every step of removing your old unit and installing a brand new, energy-efficient model.
Our expertise includes:
- Accurate sizing and model selection for your home.
- Condensing unit installs with PVC venting and condensate neutralizers
- Safe gas and electric line connections for new units.

Additional Plumbing Replacement Services in South Fulton, GA
When repairs are no longer enough, our replacement services in South Fulton, GA deliver modern, efficient equipment installed right.

Customers
Why Choose HGR Plumbing for Tankless Water Heater Replacement in South Fulton, GA?
A tankless heater is only as good as its gas supply and venting. We measure both before we quote, so your new unit fires at full output instead of shutting down on high demand.
- Energy Savings, Tankless water heaters only heat water when you need it, which can noticeably reduce energy use compared to traditional tank models, a big plus for Georgia utility bills.
- Increased Lifespan, Modern tankless water heaters often last much longer than conventional tank models, offering a better long-term investment.
- Space Saving, Their compact design allows tankless units fit in smaller spaces, freeing up valuable room in your utility closet or garage.
Citywide Coverage
HGR Plumbing is proud to serve every neighborhood of South Fulton, so no matter where you are, expert tankless water heater replacement is just a call away. We understand the diverse housing types across South Fulton and tailor our service to each home's needs.
Experienced Team
Our technicians have pulled and replaced tankless units from Rinnai, Navien, Noritz, Takagi and Rheem, so they know the quirks of each brand's error codes and mounting brackets. They also know which older units can be matched to existing venting and which need new runs.
Safety-First Approach
We perform thorough safety checks after every tankless water heater replacement, including leak detection for gas lines and proper ventilation. You can rest assured your new system is safe and in line with Georgia regulations.
Trusted Certified South Fulton Plumbing Services Professionals
At HGR Plumbing, we take pride in providing licensed, certified plumbing services throughout South Fulton, GA. Backed by recognized industry credentials, our experienced plumbers combine technical skill with genuine customer care. Whether it is repair, installation, or maintenance, we follow strict safety and quality standards to deliver long-lasting results you can trust.
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PHCC Plumbing Contractor Recognition
Better Business Bureau (BBB) Accreditation
Angi Certified Pro
ISO 9001 Quality Management CertificationProfessional Tankless Water Heater Replacement Services in South Fulton, GA
Recirculation Tankless Upgrades in South Fulton, GA
If you are tired of running the tap while you wait for hot water, a tankless with a built-in recirculation pump can bring heat to the fixture in seconds. Navien A series and Rinnai units with internal pumps can use a dedicated return line or a crossover valve under the farthest sink. We program schedules so the pump runs only during your morning and evening peaks. That keeps gas use reasonable while saving thousands of gallons of wasted water a year. This upgrade is a favorite in long single-story ranch homes.

Rinnai Tankless Water Heater Replacement in South Fulton
Rinnai is a leading brand in the tankless water heater market, known for its quality and engineering. If your Rinnai unit is aging or malfunctioning, HGR Plumbing provides expert Rinnai tankless water heater replacement in South Fulton. We make sure your new Rinnai unit is installed correctly, maximizing its efficiency and lifespan. Our technicians are familiar with the installation requirements and venting options for Rinnai models, so the upgrade goes smoothly.
Residential Tankless Water Heater Replacement in South Fulton
For homeowners in South Fulton, upgrading to a tankless water heater offers significant benefits like endless hot water and reduced energy use. We assess your household's hot water demand to recommend the ideal sized unit, so you get strong performance. Our team handles everything from safely disconnecting your old unit to installing the new tankless system. That includes all necessary gas and water line adjustments and venting changes to meet current codes.
Condensing Tankless Replacement in South Fulton
Condensing tankless units like the Navien NPE series or Rinnai Sensei reach efficiencies above 90 percent by recovering heat from exhaust gases. They vent through inexpensive PVC and produce acidic condensate that must be neutralized and drained properly. We install a neutralizer cartridge and route the condensate line to an approved drain. Attic and crawlspace temperatures climb quickly in summer, which speeds up wear on supply lines, drain pans, and any plastic piping run through those spaces. Condensing units still save gas because they work year-round on showers, laundry and dishes. We explain the cost difference so you can decide if the efficiency gain is worth the price.
Exterior Mount Tankless Units in South Fulton, GA
Many homes have tankless heaters mounted on an exterior wall with no venting at all, since the unit exhausts directly outside. These units face sun, rain and temperature swings, which can wear out plastic covers and wiring over time. Before a cold night, unhooking garden hoses, covering hose bibs, and letting a faucet drip are usually enough to prevent a burst line. When we replace them, we check the pipe cover, freeze protection settings and the electrical connection. We can add a protective pipe cover kit to shield the water and gas lines. Exterior models are often the simplest swap when the gas line is already sized correctly.
Tank to Tankless Conversions in South Fulton, GA
Converting from a 40 or 50 gallon tank to tankless frees up floor space and ends standby heat loss in a garage or closet. The catch is that tankless units usually need a larger gas line, often three quarter inch or bigger, plus new venting. We evaluate your meter size and pipe run before quoting so there are no surprises mid-job. We also cap or reroute the old flue and seal the roof penetration if it is no longer used. Expect a conversion to take a full day.
Navien Tankless Water Heater Replacement in South Fulton, GA
Navien tankless water heaters are popular for their condensing technology, offering high efficiency and performance. When it is time for a Navien tankless water heater replacement in South Fulton, GA, you can count on HGR Plumbing. We have extensive experience with Navien's advanced systems, including their combination boiler and water heater units. Our installation process focuses on dialing in your new Navien's performance, so you benefit from its energy-saving features and reliable hot water output.

Like-for-Like Tankless Swaps in South Fulton
When your existing tankless has a cracked heat exchanger or a failed control board that is not worth repairing, a direct replacement is often the quickest fix. We match the new unit to your current gas line, venting type and mounting location whenever possible. Many Rinnai and Navien models share similar footprints, which keeps wall patching to a minimum. We also replace the old service valves if they are corroded or seized. Most like-for-like swaps are done in four to six hours.
Tankless Water Heater Replacement Near Me in South Fulton, GA
Do not settle on your home's hot water supply. For dependable tankless water heater replacement near me in South Fulton, choose HGR Plumbing. We provide upfront estimates, clear communication and expert workmanship, making your upgrade to endless hot water a simple and stress-free experience.
If you are searching for tankless water heater replacement near me in South Fulton, GA, HGR Plumbing is your local expert. Our service area covers the whole region, so a professional plumber is always close by when you need a new, efficient hot water solution. We pride ourselves on quick response times and reliable service for all tankless installations.
HGR Plumbing at a Glance
- Fully licensed plumbing team covering South Fulton, GA
- Same-day appointments and 24/7 emergency response
- Upfront, flat-rate pricing before work begins
- 4.9-star rated by 357+ Georgia customers
South Fulton Map
South Fulton Information
- Population
- 110,920
- Area codes
- 404/678/770
- Service area
- South Fulton and communities within 40 miles
- Nearby
- Atlanta, Smyrna, Brookhaven, Marietta
Replacing an old tankless water heater in South Fulton, GA is important for a reliable hot water supply, especially with changing seasonal demands and mineral content that can cut into unit efficiency and lifespan.
Expert Services
Trust our professionals for reliable HGR Plumbing solutions in South Fulton, GA.
Our Specialized Plumbing Services in South Fulton, GA
At HGR Plumbing, we provide a complete range of plumbing services across South Fulton, GA. From leak detection to full system installations, our team ensures fast, precise, and affordable service for both residential and commercial properties. Explore our core services below:
How Our Tankless Water Heater Replacement Process Works in South Fulton, GA
Our tankless water heater replacement process is designed to be simple and stress-free for homeowners in South Fulton, GA.
Request a Quote
Call HGR Plumbing today at (770) 470-3778 to schedule an on-site evaluation for your tankless water heater replacement. Our team will discuss your hot water needs and provide a clear, transparent estimate.
Unit Selection
Based on your home's demands and existing setup, we will help you choose the ideal tankless water heater model. We consider factors like fuel type, flow rate and energy efficiency.
Expert Installation
Our licensed plumbers will carefully remove your old unit and install the new tankless water heater. We make sure all gas, water and vent connections meet Georgia code requirements for safety and performance.
Frequently Asked Questions About Tankless Water Heater Replacement in South Fulton
A like-for-like gas tankless replacement typically runs $2,800 to $4,500 installed, depending on the brand and venting. Converting from a tank to tankless often costs $4,000 to $6,500 because of gas line and venting upgrades. We give you a written quote before any work starts.
We do not recommend it. Gas line sizing, venting clearances and combustion testing call for training, and improper installs can void the warranty or create carbon monoxide hazards.
DIY tankless water heater replacement is usually not recommended due to the complexity of gas lines, high-voltage electricity, water connections and venting requirements. Improper installation can lead to serious gas leaks, carbon monoxide poisoning, water damage or electrical hazards. It is best to hire a licensed and experienced plumber like HGR Plumbing.
Yes, you can certainly replace a traditional tank water heater with a tankless unit. This is a common upgrade for homeowners seeking better energy efficiency and endless hot water. However, it often requires changes to gas lines, venting and possibly electrical wiring, making professional installation important for safety and performance.
Repeated error codes, fluctuating temperature, water leaking from inside the cabinet and a unit older than 15 years are common signs. If the heat exchanger is leaking, replacement is usually the better value.
Common signs that your tankless water heater needs replacement include frequent error codes, inconsistent water temperature, reduced hot water flow or a complete lack of hot water. If your unit is over 15 to 20 years old and repairs are becoming common and costly, replacement is often the more economical choice.
HGR Plumbing installs and replaces all major trusted brands of tankless water heaters. Our preferred brands include Rinnai, Navien, Noritz and Rheem, as they are known for their reliability, energy efficiency and long-term performance. We can also source and install other brands based on your preference or home requirements.
A direct swap usually takes four to six hours. A tank to tankless conversion with new gas and venting usually takes a full day.
What People Are Saying About Our Plumbing Experts?

Daniel K.
A pipe burst at 11 pm and they actually answered. The plumber showed up within the hour, shut everything down, and had us back to normal the next morning. Could not ask for more.
Emergency Plumbing · Atlanta, GA
Robert G.
The trenchless sewer replacement saved our front yard. They walked us through the camera inspection footage first so we knew exactly what we were paying for.
Sewer Line Replacement · South Fulton, GA
Sofia M.
Two new toilets installed in one visit, no mess left behind, and the tech even adjusted a faucet he noticed was dripping. Fair pricing and really friendly.
Toilet Installation · Atlanta, GA
James P.
Our commercial plumbing system had a leak under the sink, and HGR Plumbing handled it professionally. The plumbers arrived quickly and restored everything without disruption to our customers.
Commercial Plumbing · Sandy Springs, GA
Patricia H.
We had a slab leak that two other companies could not find. HGR Plumbing located it in under an hour, explained our options, and the price matched the quote to the dollar.
Slab Leak Repair · Smyrna, GA
Mark T.
When our office needed drain cleaning, HGR Plumbing provided quick, reliable service. The plumber arrived on time and made sure every drain flowed perfectly before leaving. Very satisfied.
Drain Cleaning · Marietta, GA













