Tankless water heater flush and maintenance should be scheduled about once a year to remove mineral buildup from the heat exchanger, support manufacturer warranty protection, improve efficiency, and keep hot water reliable. Homeowners may need service sooner if they have hard water, inconsistent hot water, error codes, reduced performance, longer wait times for hot water, or an unknown maintenance history after buying a home. Aaron Services: Plumbing, Heating, Cooling provides professional tankless water heater flushing, inspection, error code checks, and maintenance for major tankless brands, with easy online booking and service throughout the local area.
Protect Your Warranty. Keep Your Hot Water Flowing.
Most manufacturers recommend annual tankless maintenance to remove mineral buildup, improve performance, and help prevent costly repairs before they interrupt your hot water.
Tankless Water Heater Flush at a Glance
- Recommended every year by most tankless water heater manufacturers.
- Helps protect your warranty by meeting recommended maintenance requirements.
- Removes mineral buildup that can reduce performance and efficiency.
- Helps prevent costly repairs by catching small issues before they become bigger problems.
- Keeps hot water flowing reliably and helps extend the life of your system.
- Services all major brands, including Rinnai, Navien, Noritz, Rheem, and Bosch.
Jump to: Why Annual Maintenance Matters • What’s Included • Cost • Water Filtration • FAQ • Book Service
Protect your tankless water heater, preserve your manufacturer warranty, and keep endless hot water flowing with professional annual maintenance from Aaron Services: Plumbing, Heating, Cooling. A yearly tankless water heater flush removes mineral buildup from the heat exchanger, helps prevent error codes, and keeps your system running efficiently.
Don’t wait for lukewarm water or unexpected breakdowns. Schedule your tankless water heater flush today for reliable performance, warranty protection, and peace of mind. Book Now to get your maintenance on the calendar.
Why Schedule a Tankless Water Heater Flush?
Annual maintenance helps:
- Protect your manufacturer’s warranty
- Remove mineral buildup from the heat exchanger
- Restore efficiency and performance
- Help prevent unexpected repairs
- Extend the life of your tankless water heater
- Keep your hot water reliable year-round
When Should You Schedule a Tankless Water Heater Flush?
Homeowners should schedule tankless water heater maintenance about one year after installation and continue with annual flushing thereafter. A yearly tankless flush helps remove mineral buildup before it restricts flow, reduces efficiency, or creates unnecessary wear on the system.
You may need to schedule service sooner if you have hard water, inconsistent hot water, error codes, reduced performance, or longer wait times for hot water. It is also a smart idea to book a tankless water heater flush if you recently purchased a home and do not know when the system was last serviced.
Why Annual Maintenance Matters
Tankless water heaters are efficient and reliable, but minerals in your water can gradually collect inside the heat exchanger. This scale buildup restricts water flow, makes the unit work harder to heat water, and can lead to reduced performance, error codes, or premature wear.
An annual tankless water heater flush helps remove calcium, sediment, and other mineral deposits before they cause bigger problems. Regular maintenance keeps hot water flowing consistently, supports energy efficiency, and helps extend the life of your system.
Manufacturers like Rinnai and Navien recommend regular maintenance to help protect system performance and warranty coverage. If it has been more than a year since your last flush—or you’re not sure when it was last serviced—now is the right time to schedule professional maintenance.
Protect Your Tankless Water Heater Before Problems Start.
Annual tankless water heater maintenance helps protect your manufacturer warranty, improve system efficiency, and keep reliable hot water flowing when your family needs it.
Rely on the Experts at Aaron Services: Plumbing, Heating, Cooling
When it comes to your tankless water heater, don’t take any risks. Trust our experienced plumbers for professional water heater flush and maintenance services. Our technicians have the expertise to handle all types of tankless water heaters, ensuring your system operates efficiently and reliably. Importantly, they can check the error code history of your tankless and help identify issues before you’re unexpectedly caught without hot water on a busy weekday morning.
Aaron Services has been serving North Atlanta homeowners since 1978, and our technicians regularly maintain and service all major tankless water heater brands, including Rinnai, Navien, Noritz, Bosch, and Rheem.
Our Tankless Water Heater Flush and Maintenance Services
- Comprehensive Inspection: Our technicians will perform a detailed inspection of your tankless water heater to evaluate its condition and identify any potential issues.
- Flushing the System: We will meticulously flush out the mineral deposits from your system, restoring your tankless water heater’s efficiency.
- Error Code Check: We will inspect for any error codes that may indicate a problem with your system and address them accordingly.
- Temperature and Pressure Check: Proper operation of your tankless water heater depends on maintaining the correct temperature and plumbing system pressure settings. We will ensure these settings are adjusted correctly for optimal performance.
How Much Does a Tankless Flush Cost?
The cost of a tankless flush depends on several factors, including how many units you have, the brand of tankless water heater, and how long it has been since the system was last serviced.
Pricing can also depend on whether your unit has service valves installed, since these are needed to properly flush the system. When scheduling tankless maintenance, ask what is included so you know exactly what service your system will receive.
We regularly offer special discounts on tankless water heater flushes. Check out our specials page to see how you could save on this important maintenance.
How a Whole House Water Filtration System Reduces the Need for a Tankless Water Heater Flush
Installing a whole house water filtration system can help reduce the mineral buildup that causes scale inside your tankless water heater. By lowering the amount of calcium, magnesium, and sediment entering the unit, filtration helps protect the heat exchanger, support better efficiency, and keep hot water flowing reliably.
With less scale accumulating in the system, your tankless water heater may require less frequent flushing and face less strain between maintenance visits. A tankless flush is still important for performance and warranty protection, but better water quality can help extend equipment life and protect your investment. Ask Aaron Services about filtration options when you book your tankless water heater maintenance.
Why Choose Aaron Services?
- Serving North Atlanta Since 1978 — Family-owned and trusted by local homeowners for more than 45 years.
- Thousands of 5-Star Reviews — Honest service and quality workmanship backed by thousands of satisfied customers.
- Experienced Tankless Water Heater Specialists — We service and maintain all major tankless water heater brands.
- Upfront Pricing — You’ll know your options before any work begins.
- Peace of Mind Guarantee — We stand behind our work so you can schedule service with confidence.
- Easy Scheduling — Book online or give us a call to schedule your annual tankless water heater maintenance.
Ready for reliable hot water and less worry? Book your tankless water heater flush now with Aaron Services: Plumbing, Heating, Cooling.
Service Areas
Serving Alpharetta, Buford, Cumming, Duluth, Johns Creek, Lawrenceville, Milton, Suwanee, and Surrounding Areas
We Flush and Maintain Tankless Water Heaters Every Day
See our recent tankless work in your area:
Recent Jobs for Tankless Flush/Routine Maintenance
Location on the map is approximate to protect the privacy of our customers.
Dillon C.
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.
James F.
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.
Christopher H.
Recurring Service - Tankless Flush Special
Recurring Service - Tankless Flush Special
Performed annual flush on the customer's tankless water heater. Cleared buildup, confirmed operation, and reminded the customer this service extends the life of the system.
James F.
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.
Robert M.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service
Performed annual maintenance on the tankless water heater. Flushed the system, checked operation, and confirmed it is running efficiently.
Robert M.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Suwanee, GA
Performed annual maintenance on the tankless water heater. Flushed the system, checked operation, and confirmed it is running efficiently.
Robert M.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Cumming, GA
Performed annual maintenance on the tankless water heater. Flushed the system, checked operation, and confirmed it is running efficiently.
Robert M.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Cumming, GA
Performed annual maintenance on the tankless water heater. Flushed the system, checked operation, and confirmed it is running efficiently.
James F.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Buford, 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.
Brandon T.
Recurring Service - Tankless Flush Special
Tankless Flush Service in Duluth, 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.
Christopher H.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Tucker, 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.
Brandon T.
Recurring Service - Tankless Flush Special
Tankless Flush Service in Duluth, 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.
Christopher H.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Tucker, 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.
James F.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Norcross, 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.
James F.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Norcross, 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.
James F.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Atlanta, 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.
James F.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Atlanta, 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.
James F.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Smyrna, 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.
James F.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Smyrna, 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.
Dillon C.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Alpharetta, 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.
Dillon C.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Alpharetta, 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.
Brandon T.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Marietta, 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.
Brandon T.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Marietta, 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.
James F.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Suwanee, 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.
James F.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Suwanee, 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.
James F.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Lilburn, 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.
James F.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Suwanee, 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.
Christopher H.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Sugar Hill, 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.
Brandon T.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Cumming, 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.
James F.
Tankless Flush/Routine Maintenance
Tankless Maintenance Service in Cumming, 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.
Tankless Water Heater Flush FAQs
How often should a tankless water heater be flushed?
Most tankless water heaters should be flushed once a year to remove mineral buildup and keep the system running efficiently. Homes with hard water may need maintenance more often.
Is annual maintenance required?
Annual maintenance is strongly recommended and may be required by some manufacturers to help protect warranty coverage. Regular service also helps prevent scale buildup, error codes, and performance issues.
Can I flush my tankless water heater myself?
Some homeowners attempt to flush their own tankless water heater, but professional maintenance is recommended. A trained plumber can properly flush the heat exchanger, check for error codes, inspect system performance, and identify issues before they become larger problems.
How long does tankless maintenance take?
Most tankless water heater maintenance appointments take about one to two hours, depending on the unit, system condition, accessibility, and whether service valves are already installed.
What brands do you service?
Aaron Services maintains most major tankless water heater brands, including Rinnai, Navien, Noritz, Rheem, Takagi, Bosch, and others. If you are not sure whether we service your model, contact us when booking your appointment.
Does hard water affect tankless water heaters?
Yes. Hard water contains minerals like calcium and magnesium that can build up inside the heat exchanger. This scale can reduce efficiency, restrict flow, trigger error codes, and increase wear on the unit.
What if my unit doesn’t have service valves?
Service valves are needed to properly flush a tankless water heater. If your unit does not have them, our plumber can review your setup and explain options for installing service valves before maintenance is performed.
How much does a tankless water heater flush cost?
The cost of a tankless water heater flush depends on the number of units, the brand, maintenance history, accessibility, and whether service valves are installed. Contact Aaron Services or book online for current pricing and available specials.
Still Have Questions?
Our experienced plumbers are happy to answer questions about tankless maintenance, warranty protection, or scheduling a tankless water heater flush.