Tankless Water Heater Installation, Repair & Maintenance in Lawrenceville

For tankless water heater installation, repair, and maintenance in Lawrenceville, Aaron Services is a strong local choice. Family owned & operated since 1978, Aaron Services provides professional installation of Navien and Rinnai systems, tankless repairs and diagnostics, and routine flushing and maintenance. Lawrenceville homeowners can expect experienced plumbers, clear options before work begins, and no emergency fees.

Tankless is the Modern Choice for Lawrenceville Homes

Tankless water heaters are quickly becoming the upgrade of choice for busy households that don’t want to run out of hot water. Instead of storing gallons in a tank that constantly re-heats, a tankless system warms water the moment you turn on the tap—providing unlimited hot water, lower energy bills, and valuable space savings in homes of all sizes.

Whether replacing an aging tank unit or building a modern home in one of Lawrenceville’s growing neighborhoods, tankless is becoming the standard in water heating. A tankless water heater installation Lawrenceville homeowners tell their neighbors about is one provided by Aaron Services, with competitive pricing and a luxurious end result.

Why More Lawrenceville Homeowners Choose Tankless

Tankless water heaters are designed for convenience and efficiency. Because they’re designed to only heat water as you need it, they’re compact and efficient:

• Energy savings – By heating water only when needed, tankless units reduce standby energy loss and help lower utility costs year-round.
• More space to live – Compact, wall-mounted units free up garage and closet space previously taken by large storage tanks.
• Endless hot water – No more “who used up the hot water?” worries. Showers, laundry, and dishes can finally happen at the same time without running cold.
• Longer lifespan – Tankless units typically last several years longer than traditional tank water heaters.
• Cleaner, safer water – Freshly heated water is delivered instantly instead of sitting in a tank where sediment can build up.

When considering a tankless water heater installation Lawrenceville residents generally choose tankless when they want to increase their comfort and potential home resale value.

If you’re comparing different hot water options, our guide to tank vs tankless water heaters can help explain the long-term differences in efficiency, space, lifespan, and hot water performance. Our complete line of water heater services means that whether you go tankless or tank, you can have the Aaron Services peace of mind guarantee.

Tankless Water Heater Installation — Lawrenceville Specific Needs

Lawrenceville homes vary widely in age and layout — and tankless systems adapt to those differences perfectly. Here’s why they’re such a smart fit locally:

Built for Georgia Climate

Hot summers demand steady performance, and chilly winters reduce incoming water temps. Tankless technology keeps hot water flowing no matter the season.

Works with Local Water Conditions

Gwinnett County homes can experience harder water. Quality brands like Navien and Rinnai are designed to manage scale buildup and protect long-term efficiency.

Ideal for Renovations & Space-Saving Layouts

More homeowners are reclaiming space once taken up by bulky tanks. Wall-mounted tankless systems free up garages, closets, and utility rooms.

Supports Energy-Efficient Living

Tankless units heat only what you use, reducing waste and lowering energy bills — a perfect match for eco-minded families in growing neighborhoods.

Tankless Water Heater Repair in Lawrenceville

Tankless water heaters are dependable, but they can still develop problems with age, heavy use, mineral buildup, or improper installation. When something goes wrong, the cause is not always obvious. An error code may point to the general problem, but proper testing is often needed to determine whether the issue involves water flow, ignition, venting, fuel supply, a sensor, or another component.

Aaron Services provides tankless water heater repair in Lawrenceville for Navien, Rinnai, and other major brands. Our plumbers inspect the system, explain what they find, and review the available repair options before work begins.

Common Tankless Water Heater Problems

Call for service if you notice any of the following:

• No hot water
• Water that suddenly turns cold
• Inconsistent water temperatures
• Reduced hot-water flow
• An error code that keeps returning
• Unusual noises during operation
• Water leaking from or around the unit
• Delayed ignition or frequent shutdowns
• Hot water that does not reach certain fixtures
• A system that needs to be reset regularly

Some problems have relatively simple causes, such as a clogged inlet filter or overdue maintenance. Others may involve the heat exchanger, igniter, flow sensor, control board, venting, gas supply, or recirculation system. A complete diagnosis helps avoid replacing parts that are not causing the problem.

Possible Causes of Tankless Performance Decline

Mineral buildup is one of the most common causes of declining tankless performance. As water moves through the heat exchanger, minerals can collect inside the system and restrict flow. Over time, this buildup may reduce efficiency, contribute to temperature fluctuations, and place additional stress on internal components.

Performance problems can also result from:

• An undersized gas line
• Improper venting
• A blocked intake or exhaust
• Dirty water filters
• Ignition or flame-sensor problems
• Incorrect system settings
• Recirculation system issues
• Improper original installation
• Worn or failed internal components

Because several problems can create similar symptoms, reading an error code alone may not provide the full answer. Our plumbers evaluate the code along with the system’s installation, condition, maintenance history, and current operation.

Tankless Water Heater Maintenance in Lawrenceville

Routine maintenance helps a tankless water heater operate efficiently and may prevent avoidable repairs. Most systems should be inspected and flushed regularly, although the appropriate schedule depends on the manufacturer, water quality, and household usage.

Homes with hard water or heavy hot-water demand may need more frequent service. Following the manufacturer’s maintenance requirements may also be necessary to maintain warranty coverage.

What Tankless Maintenance Includes

Tankless water heater maintenance may include:

• Flushing the heat exchanger to remove mineral buildup
• Cleaning the water inlet filter
• Inspecting the air intake and exhaust venting
• Checking water, gas, and condensate connections
• Looking for leaks or signs of corrosion
• Reviewing stored or active error codes
• Testing the system’s operation and water temperature
• Inspecting recirculation components when applicable

Maintenance needs vary by system, so the service should be based on the unit’s model and condition rather than treated as a one-size-fits-all process.

Signs Your Tankless Water Heater May Be Overdue for Maintenance

Your system may need maintenance if you notice:

• Hot-water flow is weaker than it used to be
• Water temperature changes during use
• The unit takes longer to respond
• The system has become louder
• Error codes appear more frequently
• You do not know when it was last flushed

You do not need to wait for a noticeable problem before scheduling maintenance. Regular service can remove buildup before it begins interfering with normal operation.

Service for Navien, Rinnai, and Other Tankless Brands

Navien and Rinnai are two of the most common tankless water heater brands we encounter in Lawrenceville homes. Although both companies produce reliable equipment, each system has its own components, maintenance requirements, diagnostic codes, and recommended service procedures.

We also receive calls involving less-common and off-brand systems. Repair options for these units may depend on the availability of replacement parts and technical support. When a repair is possible, we will explain what is needed. If parts are unavailable or the cost does not make sense, we can help you compare replacement options without pressure.

Why Choose Aaron Services for Tankless Installation, Repair and Maintenance?

Aaron Services has served Lawrenceville and surrounding Gwinnett County communities since 1978. Our plumbers understand that tankless water heaters require different diagnostic and maintenance procedures than traditional tank-style systems.

When you schedule tankless service with Aaron Services, you can expect:

• A thorough evaluation of the system
• Clear explanations of the problem
• Repair options presented before work begins
• Experience with Navien, Rinnai, and other major brands
• Tankless flushing and preventive maintenance
• No emergency fees
• Respect for your home and cleanup after the work is completed

Whether your tankless water heater has stopped working, displays an error code, or simply needs routine maintenance, Aaron Services can help you determine the right next step.

Real Experiences From Lawrenceville Tankless Water Heater Customers

Tankless water heater installation is a major upgrade, and homeowners want confidence that the system is being recommended and installed correctly. Many of the reviews below mention clear communication, professional technicians, and a smooth installation experience without unnecessary pressure.

  
 
 
 
 
 
 
 
 
 
  
  
 
 
 Daniel J 
 
 
 Trustindex verifies that the original source of the review is Google. 
+1
Very good and came right on time. Did the flushing job on the tankless water heater and made sure pressure and all was good. This was maintenance not repair. CJ was professional friendly and efficient.
  
 
 
 
 
  
  
 
 
 Eric L 
 
 
 Trustindex verifies that the original source of the review is Google. 
+0
Gabe fixed our tankless water heater and switched out a couple faucets for us. He was super helpful and finished the job very quickly.
  
 
 
 
 
  
  
 
 
 Kristen G 
 
 
 Trustindex verifies that the original source of the review is Google. 
+1
I am extremely pleased with the service I received by Aaron Services with my new install of two tankless water heaters. I had a 23 year-old water tank in my house and  I wanted to change to the tankless but did not know much about them.   Brandon was very knowledgeable and spoke with me at length of the benefits of the tankless water heaters. On the day of the install Brandon and Tai worked a very long day until the job was done. They also helped me with an unrelated drain issue. They truly went above and beyond making sure the job was done correctly and efficiently.   I highly recommend Brandon and Tai for any plumbing work and will be requesting them when my tankless heaters need servicing or if I have any other plumbing issues.  Thank you Aaron services for making this transition smooth.
  
 
 
 
 
  
  
 
 
 Steven G 
 
 
 Trustindex verifies that the original source of the review is Google. 
+0
Aaron Plumbing...My technician was Gabe...this was the forth appointment I have had the privilege of Gabe's service...He has installed a tankless water heater, installed a sink and faucet in the kitchen, inspected the sump pump in the basement and finally replaced the sump pump today...Aaron Plumbing has always honored my request have Gabe provide the needed service... My congratulations to Aaron Plumbing for having a kind and competent company representative in Gabe.
  
 
 
 
 
  
  
 
 
 Jagdish G 
 
 
 Trustindex verifies that the original source of the review is Google. 
+0
Gabe & Robert explained the problem in detail. He had to go out & get necessary relief valve to fix the issue. Work also involved flush out tankless water heater. Good service and definitely recommend Aaron plumbing..
  
 
 
 
 
  
  
 
 
 Neena G 
 
 
 Trustindex verifies that the original source of the review is Google. 
+1
This is the second time we have used Aaron. First, they installed a tankless water heater and it works beautifully. This time, we had a water main break and our irrigation system had two different leaks. Gabe and Robert came out, were both very knowledgeable and professional, gave us a quote, and fixed the problem within 48 hours of our first phone call. This was an expensive job, but Aaron gave us a very competitive quote. Gabe and Robert were honest and reliable and genuinely nice people, and I will continue to call them in the future. I am a very pleased customer.
  
 
 
 
 
  
  
 
 
 Christopher S 
 
 
 Trustindex verifies that the original source of the review is Google. 
+2
I had a very good experience with a very knowledgable technician this morning. He got my 2015 Rinnai RUC98 operating better than it ever has operated before! A trap was added on the condensate line to keep the unit from  going into a fault to keep in from running thanks!
  
 
 
 
 
  
  
 
 
 Holly M 
 
 
 Trustindex verifies that the original source of the review is Google. 
+2
Update 7/11/2024 Stevie and Billy came today to install a Navien tankless water heater. Great job and great installers! Did a five star job! Definitely recommend Aaron’s Plumbing Services. Aaron Services has been our plumbing company for years. The plumbers, as well as the office staff, are very professional, knowledgeable, and courteous.  Lilo did a Five Star job on all of the plumbing repairs and installs at our home.  We highly recommend this wonderful company!
  
 
 
 
 
  
  
 
 
 Brock J 
 
 
 Trustindex verifies that the original source of the review is Google. 
+0
I was referred to Aaron by my brother-in-law and the team did not disappoint!  Not only did I receive the best quote, Billy and CJ did a great job installing and walking me through all the particulars. All the install work seems top notch and very methodical as well which is very much appreciated. Glad I finally pulled the trigger on a tankless heater - and I’m really glad I called Aaron.
  
 
 
 
 
  
  
 
 
 Dwayne E 
 
 
 Trustindex verifies that the original source of the review is Google. 
+0
Billy was prompt, professional, and flushed our tankless water heater at a fair price. Highly recommend Billy and Aaron services!!
  
 
 
 
 
 
 
 
 
 

Questions About Tankless Water Heater Installation, Repair & Maintenance | Lawrenceville Edition

Tankless Specials & Savings

Get all the information you need about tankless from an experienced, knowledgeable plumber who specializes in this advanced water heating technology. We love to answer questions about tankless water heaters. Contact us for a free tankless water heater installation estimate. And ask about our specials for discounted plumbing repairs and tankless water heater flush savings.

Get Modern Comfort with Aaron Services

Tankless water heaters are just one part of keeping a home comfortable and efficient. In addition to tankless installation, Aaron Services also provides full-service plumbing services in Lawrenceville including drain cleaning, slab leak and water line repair, and water heater services. We also offer Lawrenceville air conditioning repair and replacement to help homeowners stay comfortable year-round with one trusted local company.

Don’t take our word for it, though! If you’re still not sure if you should go with a tank or tankless water heater installation in Lawrenceville, check out our water heater buying guide. It’ll walk you through specific considerations for your home to help you make the perfect choice. And whether you decide on a tank or a tankless, we’re just a call away.

Recent Jobs in Lawrenceville, GA

Location on the map is approximate to protect the privacy of our customers.

James F.

2026-08-31

2026-08-31

Tankless Service

Tankless Service

Arrived at the customer's home and assessed the plumbing issue. After a thorough inspection, I diagnosed the problem, explained the findings to the customer, and reviewed repair options. Once approved, I completed the necessary plumbing work and tested the system to confirm everything is functioning properly. The issue has been resolved.

Plumbing job near Foxfire Dr SW, Lawrenceville, GA 30044

Robert M.

2026-05-06

2026-05-06

Tankless Replacement (Sold Job)

Tankless Replacement (Sold Job)

Arrived at the customer's home and assessed the plumbing issue. After a thorough inspection, I diagnosed the problem, explained the findings to the customer, and reviewed repair options. Once approved, I completed the necessary plumbing work and tested the system to confirm everything is functioning properly. The issue has been resolved.

Plumbing job near Sydney Pond Circle Northwest, Lawrenceville, GA 30046

James F.

2026-04-17

2026-04-17

Tankless Flush/Routine Maintenance

Tankless Flush/Routine Maintenance

Performed annual maintenance on the tankless water heater. Flushed the system, checked operation, and confirmed it is running efficiently.

Apprentice job near Stovall Ridge Ct NW, Lawrenceville, GA 30043

James F.

2026-03-05

2026-03-05

Tankless Flush/Routine Maintenance

Tankless Flush/Routine Maintenance

Performed annual maintenance on the tankless water heater. Flushed the system, checked operation, and confirmed it is running efficiently.

Plumbing job near Parliament Court, Lawrenceville, GA 30043

James F.

2026-02-12

2026-02-12

Tankless Service

Tankless Service

Arrived at the customer's home and assessed the plumbing issue. After a thorough inspection, I diagnosed the problem, explained the findings to the customer, and reviewed repair options. Once approved, I completed the necessary plumbing work and tested the system to confirm everything is functioning properly. The issue has been resolved.

Plumbing job near Gracehaven Way, Lawrenceville, GA 30043

James F.

2026-01-22

2026-01-22

Tankless Service

Tankless Service

Arrived at the customer's home and assessed the plumbing issue. After a thorough inspection, I diagnosed the problem, explained the findings to the customer, and reviewed repair options. Once approved, I completed the necessary plumbing work and tested the system to confirm everything is functioning properly. The issue has been resolved.

Plumbing job near Crowes Lake Court, Lawrenceville, GA 30043

Brandon G.

2025-12-15

2025-12-15

Tankless Replacement

Tankless Replacement in Lawrenceville, GA

Replaced customer’s old tankless water heater with a new unit. Installed to code, tested, and confirmed proper operation.

Plumbing job near Village Oaks Lane, Lawrenceville, GA 30043

Brandon G.

2025-12-15

2025-12-15

Tankless Replacement

Tankless Replacement in Lawrenceville, GA

Replaced customer’s old tankless water heater with a new unit. Installed to code, tested, and confirmed proper operation.

Apprentice job near Village Oaks Lane, Lawrenceville, GA 30043

Brandon G.

2025-12-15

2025-12-15

Tankless Replacement (Sold Job)

Tankless Replacement (Sold Job)

Apprentice job near Village Oaks Lane, Lawrenceville, GA 30043

Steve C.

2025-10-06

2025-10-06

Tankless Replacement

Tankless Replacement in Lawrenceville, GA

Replaced customer’s old tankless water heater with a new unit. Installed to code, tested, and confirmed proper operation.

Plumbing job near Duluth Highway, Lawrenceville, GA 30043

James F.

2025-07-15

2025-07-15

Tankless Replacement

Tankless Replacement in Lawrenceville, GA

Provided expert services related to tankless replacement . After thoroughly evaluating the customer's plumbing system, we were able to recommend the best tankless model and set up to meet the customer's needs. With the customer's approval, we were able to replace the tankless water heater for continued comfort and peace of mind. Our professionals ensured that every aspect of the job met the highest standards of quality and safety.

Plumbing job near Bramlett Shoals Road, Lawrenceville, GA 30045

Gabe J.

2025-06-05

2025-06-05

Tankless Replacement

Tankless Replacement in Lawrenceville, GA

Provided expert services related to tankless replacement . After thoroughly evaluating the customer's plumbing system, we were able to recommend the best tankless model and set up to meet the customer's needs. With the customer's approval, we were able to replace the tankless water heater for continued comfort and peace of mind. Our professionals ensured that every aspect of the job met the highest standards of quality and safety.

Plumbing job near Betty Joyce Court, Lawrenceville, GA 30045

Dillon C.

2025-04-23

2025-04-23

Tankless Flush/Routine Maintenance

Tankless Maintenance Service in Lawrenceville, GA

Performed necessary maintenance on customer's tankless water heater. This essential annual maintenance ensures the most efficient performance and lengthens the life of the tankless water heater. It also is required by manufacturers to uphold the tankless' warranty. Our professionals ensured that every aspect of the job met the highest standards of quality and safety.

Plumbing job near Duluth Highway, Lawrenceville, GA 30043

James F.

2025-03-24

2025-03-24

Tankless Water Heater Repair

Tankless Water Heater Repair in Lawrenceville, GA

After a thorough diagnosis, we were able to determine the cause of the tankless error code. We were then able to perform the proper tankless repair services so that the code would not return. Our professionals ensured that every aspect of the job met the highest standards of quality and safety.

Plumbing job near Brook Knoll Place, Lawrenceville, GA 30043

James F.

2024-10-10

2024-10-10

Tankless Water Heater Repair

Tankless Water Heater Repair in Lawrenceville, GA

After a thorough diagnosis, we were able to determine the cause of the tankless error code. We were then able to perform the proper tankless repair services so that the code would not return. Our professionals ensured that every aspect of the job met the highest standards of quality and safety.

Plumbing job near Duluth Highway, Lawrenceville, GA 30043

James F.

2024-07-08

2024-07-08

Tankless Flush/Routine Maintenance

Tankless Maintenance Service in Lawrenceville, GA

Performed necessary maintenance on customer's tankless water heater. This essential annual maintenance ensures the most efficient performance and lengthens the life of the tankless water heater. It also is required by manufacturers to uphold the tankless' warranty. Our professionals ensured that every aspect of the job met the highest standards of quality and safety.

Plumbing job near Oakshyre Place, Lawrenceville, GA 30043

Dillon C.

2024-04-15

2024-04-15

Tankless Flush/Routine Maintenance

Tankless Maintenance Service in Lawrenceville, GA

Performed necessary maintenance on customer's tankless water heater. This essential annual maintenance ensures the most efficient performance and lengthens the life of the tankless water heater. It also is required by manufacturers to uphold the tankless' warranty. Our professionals ensured that every aspect of the job met the highest standards of quality and safety.

Plumbing job near Parliament Court, Lawrenceville, GA 30043

Rylan W.

2024-02-01

2024-02-01

Recurring Service - Tankless Flush Special

Tankless Flush Service in Lawrenceville, GA

Flushed the customer's tankless water heater. This essential annual maintenance ensures the most efficient performance and lengthens the life of the tankless water heater. It also is required by manufacturers to uphold the tankless' warranty. Our professionals ensured that every aspect of the job met the highest standards of quality and safety.

Plumbing job near Culver Street South, Lawrenceville, GA 30046

Victor M.

2024-01-10

2024-01-10

Tankless Flush/Routine Maintenance

Tankless Maintenance Service in Lawrenceville, GA

Performed necessary maintenance on customer's tankless water heater. This essential annual maintenance ensures the most efficient performance and lengthens the life of the tankless water heater. It also is required by manufacturers to uphold the tankless' warranty. Our professionals ensured that every aspect of the job met the highest standards of quality and safety.

Plumbing job near Foxfire Drive Southwest, Lawrenceville, GA 30044

Matthew L.

2023-12-21

2023-12-21

Tankless Replacement

Tankless Replacement in Lawrenceville, GA

Provided expert services related to tankless replacement . After thoroughly evaluating the customer's plumbing system, we were able to recommend the best tankless model and set up to meet the customer's needs. With the customer's approval, we were able to replace the tankless water heater for continued comfort and peace of mind. Our professionals ensured that every aspect of the job met the highest standards of quality and safety.

Plumbing job near Kingsley Court Northwest, Lawrenceville, GA 30043

Matthew L.

2023-12-21

2023-12-21

Tankless Replacement

Tankless Replacement in Lawrenceville, GA

Provided expert services related to tankless replacement . After thoroughly evaluating the customer's plumbing system, we were able to recommend the best tankless model and set up to meet the customer's needs. With the customer's approval, we were able to replace the tankless water heater for continued comfort and peace of mind. Our professionals ensured that every aspect of the job met the highest standards of quality and safety.

HVAC Sales job near Kingsley Court Northwest, Lawrenceville, GA 30043

Matthew L.

2023-09-18

2023-09-18

Tankless Replacement

General Maintenance

We performed general maintenance tasks.

Plumbing job near Dogwood Hollow Lane, Lawrenceville, GA 30043

Matthew L.

2023-09-14

2023-09-14

Tankless Replacement

General Maintenance

We performed general maintenance tasks.

Plumbing job near Woodbrook Way, Lawrenceville, GA 30043

Matthew L.

2023-09-12

2023-09-12

Tankless Error Code/Issue without Error code

General Maintenance

We performed general maintenance tasks.

Plumbing job near Dogwood Hollow Lane, Lawrenceville, GA 30043

Plumbing Jobs checkins for Aaron Service technicians. Updated on 2026-08-31