Rinnai Customer Service: Warranty, Repairs & Reviews

Rinnai America manufactures residential and commercial water-heating and home-heating products, including gas tankless water heaters, electric heat pump water heaters, boilers, direct-vent wall furnaces, vent-free heating products, controls, and related accessories. Customers may need support for an error code, no-hot-water problem, warranty claim, product registration, repair, installer question, recall, Rinnai Central app issue, replacement part, or complaint about a product or service experience.

For Rinnai Customer Care, call 1-800-621-9419. Rinnai currently lists residential Customer Care hours as Monday through Friday from 8 a.m. to 8 p.m. Eastern Time. Live online chat is also available during those hours.

How to Contact Rinnai Customer Service

Homeowners with a Rinnai product question can call 1-800-621-9419, use the online contact options at Rinnai.us, or chat with an agent during published chat hours.

The correct next step depends on the problem. Rinnai Customer Care can help identify an error code, explain warranty procedures, locate product documentation, assist with registration, and help connect customers with a qualified service professional. Installation and repair work involving gas, combustion, electrical components, water connections, or venting should be handled by an appropriately qualified professional.

What to Have Ready Before Calling Rinnai

Gathering product and installation information before contacting Rinnai can make troubleshooting and warranty review much faster.

• The complete Rinnai model number
• The product serial number
• Purchase date
• Installation date
• Proof of purchase or installation invoice
• Name and contact information for the installing contractor
• The exact error code shown on the unit or app
• Gas type, such as natural gas or propane, when applicable
• A description of the hot-water, heating, leak, ignition, venting, or operating problem
• Photographs of the rating plate and installation when requested
• Previous Rinnai support or warranty case information
• Maintenance and service history

Do not remove the product rating label. The model and serial number are important for identifying the correct manual, parts, warranty, and recall information.

Rinnai Tankless Water Heater Support

For a Rinnai tankless water heater that is not producing hot water, shuts down, displays an error code, has reduced flow, or behaves differently than expected, write down the exact error code before resetting or turning off the unit.

Useful information for troubleshooting includes:

• Whether there is no hot water or only intermittent hot water
• The exact error code
• Whether the problem affects one fixture or the entire home
• Incoming water pressure and flow symptoms
• Gas or electrical supply information
• Whether routine flushing or descaling has been performed
• Whether the condensate drain appears obstructed on a condensing model
• Whether recirculation settings or the Rinnai Central app recently changed
• Whether any plumbing, gas, venting, or electrical work was recently performed

Rinnai recommends contacting Customer Care or a local installer to identify the root cause of an error code. Avoid replacing parts solely on the basis of an error number without confirming the actual cause.

Find a Rinnai Installer or Repair Professional

Rinnai provides an official Find a PRO tool for locating local professionals who install and service Rinnai products.

Use the official Rinnai PRO locator when you need professional diagnosis, warranty repair, maintenance, installation, or replacement assistance.

If a problem appears related to the original installation, contact the original installer when possible. Installation workmanship, venting, gas sizing, water piping, electrical connections, drainage, and code compliance can be separate from a manufacturing defect.

Rinnai Warranty Help

Rinnai warranty coverage varies by model, product type, installation, application, and warranty document. Do not assume that every Rinnai tankless water heater, boiler, furnace, or accessory has the same warranty term.

For warranty assistance, call 1-800-621-9419. Rinnai directs customers to the warranty document or Installation/Owner’s Guide for the exact coverage that applies to their model.

Proof of purchase may be required for warranty service. Keep your receipt, contractor invoice, installation paperwork, model number, serial number, and product-registration confirmation together.

Tankless Water Heater Labor Coverage and Registration

Rinnai currently states that its tankless water heaters include one year of reasonable labor coverage and that qualifying owners can extend applicable labor coverage to five years by registering the product within 90 days. Restrictions and product-specific terms apply.

Register your product through the official Rinnai Product Registration page and save the registration confirmation.

Registration does not replace the written warranty or proper installation and maintenance requirements. Always review the warranty document for your exact model.

Rinnai Product Registration

Rinnai’s online registration tool uses the unit serial number. The serial number is normally located on the product’s identification label.

Registration can help establish ownership, support applicable extended labor coverage, and make it easier to associate a product with important service or product information.

Enter the serial number exactly as instructed on the Rinnai registration page. Keep your purchase receipt even after registering.

Rinnai Recall and Carbon Monoxide Safety Information

The U.S. Consumer Product Safety Commission announced the recall on June 5, 2025. Approximately 2,030 units were included in the U.S. recall, with additional units sold in Canada.

Owners of an affected boiler should follow the current Rinnai and CPSC instructions and contact Rinnai to arrange the free repair by a certified technician.

• Rinnai Recall Phone: 1-800-621-9419
• Recall Email: recall@rinnai.us
• Official Recall Information: Rinnai Recalls

Rinnai’s recall page also lists an older carbon-monoxide-related recall involving certain EnergySaver Direct Vent Wall Furnaces, including RHFE 431 and RHFE 556 models manufactured during specified periods between 2000 and 2007. Owners of older Rinnai heating equipment should compare the exact model and serial information with Rinnai’s current recall page.

What to Do If You Suspect Carbon Monoxide

Carbon monoxide is dangerous and cannot be safely diagnosed through ordinary customer-service troubleshooting. If a carbon monoxide alarm activates or occupants experience symptoms consistent with possible exposure, leave the affected area and contact emergency services, the gas utility, or another appropriate emergency resource.

Do not continue operating equipment that appears unsafe merely to obtain an error code or complete troubleshooting.

Gas Smell, Leak or Unsafe Operation

If you smell gas, suspect a combustion problem, see signs of overheating, experience a significant water leak, or believe a Rinnai appliance is unsafe, prioritize safety rather than ordinary customer-service troubleshooting.

Follow the emergency instructions in the product manual and contact the gas utility, emergency services, or a qualified professional as appropriate. Do not operate switches, create ignition sources, or dismantle gas equipment if a gas leak is suspected.

Rinnai Error Codes

Rinnai error codes vary by product and model. Before calling Customer Care:

1. Write down the exact code.
2. Record the model and serial number.
3. Note what the unit was doing when the code appeared.
4. Check the correct owner’s manual for that model.
5. Do not repeatedly reset a code when an unsafe condition may exist.
6. Call Rinnai or a qualified service professional if the code returns or the cause is unclear.

Rinnai maintains an extensive product-document library containing owner manuals, installation manuals, specifications, technical bulletins, warranty documents, and other model-specific information.

Rinnai Central App and Connected Product Help

Compatible Rinnai products can work with Rinnai Central and supported wireless accessories for features such as recirculation scheduling, temperature adjustment, status information, maintenance alerts, and vacation settings.

If the app or connected feature is not working, gather:

• Your Rinnai model
• Wireless-module model when applicable
• Phone operating system
• App version
• Account email address
• Home Wi-Fi information excluding the password
• The exact app error or connection symptom

Do not publish your Wi-Fi password, Rinnai account credentials, or other login information in a public review.

Rinnai Parts and Replacement Components

Before purchasing a replacement component, confirm the exact model and serial number. Control boards, igniters, sensors, valves, heat-exchanger parts, pumps, venting components, and other parts can differ even among similar-looking Rinnai products.

For a warranty repair, follow Rinnai’s warranty process before purchasing parts independently. Rinnai professionals can use company systems to request eligible parts and submit warranty claims.

Gas, combustion, electrical, venting, and safety-related components should be diagnosed and installed by a qualified professional.

Rinnai Maintenance Questions

Maintenance requirements depend on the model and local conditions. Tankless water heaters may require periodic inspection, flushing or descaling, filter cleaning, condensate maintenance, and inspection of venting and combustion components.

Hard-water conditions can increase scale accumulation. Review the maintenance section of the manual for your exact model rather than following a generic maintenance schedule from an unrelated website.

Keep records of professional service and maintenance because they may help diagnose future problems or document the condition of the product during a warranty claim.

Rinnai Privacy and Website Questions

For privacy-related concerns, Rinnai’s current privacy policy lists comments@rinnai.us and the following mailing address:

Rinnai America Corporation
Attn: Customer Service
103 International Drive
Peachtree City, GA 30269

The privacy email is intended for privacy-related matters and should not replace the normal Customer Care number for water-heater, boiler, furnace, warranty, or repair questions.

How to Escalate a Rinnai Customer Service Complaint

1. Start with Customer Care. Call 1-800-621-9419 or use Rinnai’s official contact options.
2. Record the case details. Keep the date, representative or department, case number, model, serial number, and promised next step.
3. Determine whether the problem is product- or installation-related. If a contractor diagnoses the issue, request written findings.
4. Confirm warranty coverage before approving work. Ask what parts, labor, shipping, or other costs are covered.
5. Request the reason for any warranty denial. Compare it with the warranty document for your exact product.
6. Keep invoices and photographs. Save diagnostic invoices, repair estimates, pictures of the installation, replaced components, and correspondence.
7. Use the Rinnai PRO locator when another qualified technician is needed.
8. Escalate safety or recall problems separately. For an active recall, use Rinnai’s recall process. Product-safety concerns can also be reported to the appropriate government safety agency.

Rinnai Corporate Headquarters

Rinnai America Corporation currently identifies its U.S. headquarters, engineering, and training location as:

Rinnai America Corporation
103 International Drive
Peachtree City, GA 30269

The headquarters main number is 1-678-829-1666. For normal product, warranty, repair, or technical-support questions, use Customer Care at 1-800-621-9419 rather than beginning with the corporate main number.

Rinnai Customer Service Reviews on CustomerServiceNumbers.com

CustomerServiceNumbers.com currently has no published Rinnai customer reviews. Because there are zero reviews, there is not yet enough CSN feedback to identify reliable positive or negative trends involving Rinnai products, warranty handling, technical support, repairs, installers, or customer service.

If you have personally contacted Rinnai about a tankless water heater, boiler, furnace, error code, warranty claim, repair, recall, product registration, app problem, or another customer-service issue, you can leave a review below describing what happened and whether the issue was resolved.

Related Water Heater Customer Service Pages

• Rheem Water Heater Customer Service
• A. O. Smith Customer Service

Rinnai Customer Service Frequently Asked Questions

What is the Rinnai customer service phone number?

Rinnai Customer Care can be reached at 1-800-621-9419. Current residential support hours are Monday through Friday from 8 a.m. to 8 p.m. Eastern Time.

Does Rinnai offer live chat?

Yes. Rinnai currently provides live online chat Monday through Friday from 8 a.m. to 8 p.m. Eastern Time through its official website.

How do I find someone to repair my Rinnai water heater?

Use the official Find a Rinnai PRO tool at Rinnai.us to locate a professional who installs and services Rinnai products.

How do I make a Rinnai warranty claim?

Call 1-800-621-9419. Have the model number, serial number, proof of purchase, installation information, and description of the problem ready. Warranty coverage varies by product and model.

Should I register my Rinnai tankless water heater?

Yes. Rinnai encourages product registration and currently offers qualifying tankless water-heater owners an opportunity to extend applicable reasonable labor coverage from one year to five years when registration is completed within 90 days. Restrictions apply.

Is there a current Rinnai recall?

Yes. Certain i-Series Plus gas boilers, models IP175S, IP199S, IP175199C, and IP199199C, are subject to a carbon-monoxide-related recall announced in 2025. Check Rinnai’s official recall page using your exact model information.

What should I do about a Rinnai error code?

Write down the exact code and model number before resetting the unit. Check the correct model manual and contact Rinnai Customer Care or a qualified installer to determine the underlying cause.

Where is Rinnai America headquartered?

Rinnai America Corporation identifies its headquarters at 103 International Drive, Peachtree City, GA 30269.

What is Rinnai’s headquarters phone number?

The headquarters main number is 1-678-829-1666. For ordinary product or warranty support, use 1-800-621-9419.

Can CustomerServiceNumbers.com repair my Rinnai product?

No. CustomerServiceNumbers.com is an independent consumer-information and review website. We cannot diagnose appliances, schedule technicians, approve warranty claims, send replacement parts, register products, or arrange recall repairs.

Why Trust CustomerServiceNumbers.com?

CustomerServiceNumbers.com has helped consumers locate customer-service information and share service experiences since 2004. We organize official support routes, warranty information, complaint resources, safety information, and public customer reviews independently from the companies listed.

Product-support hours, warranty terms, registration benefits, recalls, model information, repair procedures, and addresses can change. Confirm important safety, warranty, recall, and repair information directly with Rinnai and the documentation for your specific product.

Share Your Rinnai Customer Service Experience

Have you contacted Rinnai about a tankless water heater, boiler, furnace, warranty claim, installer, error code, product registration, recall, repair, Rinnai Central problem, or another support issue? Leave a review below explaining which support route you used, what happened, and whether the issue was resolved.

Customer Service Numbers Disclaimer

CustomerServiceNumbers.com is an independent consumer information and review website. It is not owned by, operated by, sponsored by, or affiliated with Rinnai America Corporation, Rinnai Corporation, any Rinnai installer, or any government safety agency. We cannot access warranty files, diagnose products, approve repairs, provide replacement parts, register units, or arrange recall service. Always confirm important product, warranty, installation, recall, and safety information directly with Rinnai and qualified professionals.