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Water Heater Tech Support

Troubleshooting 800 Numbers - Water Heaters

This page was created by popular demand: a lot of people are searching online for water heater tech support, customer service phone numbers for various manufacturers of water heaters. So, we’ve heard you and created this collection of useful links and phone numbers

Troubleshooting 800 Numbers - Water Heaters

Water Heater Tech Support -Numbers for all Major Brands

Rheem Company Logo

Rheem Water Heater Tech Support:

What is the Best Phone Number for Rheem Heating & Cooling Tech Support?
Rheem Customer Service Number is 1-479-648-4900.
If you need to contact Rheem water heater tech support dedicated to tankless water heaters, please call the toll-free number 1-866-720-2076

Rheem Water Heater Customer service phone number
What is Rheem Heating & Cooling’s best toll-free / 800 phone number?
Call Rheem Water Heater Customer service at (866) 720-2076 to get right to a Rheem Heating & Cooling agent. The next best way to talk to their customer support team is by calling their 800-432-8373 phone number for their Technical Support department. Common problems addressed by the customer care unit that answers calls to 479-648-4900

If you want to find a Rheem store near you, you can use their locator page. Various customer service options are available, but the easiest one is to call the company at 1-866-720-2076. This number is dedicated to tankless water heater customer support.

Rheem company was founded by two Rheem brothers in California back in 1925. Rheem is currently the largest manufacturer of water heating products in North America. The company also produces heating, cooling, pool & spa heating, and commercial refrigeration products.

Note: On 12/09/2015, Rheem acquired the Eemax Inc., of Waterbury, Connecticut, from the Riverside Company. In addition to its Eemax-branded water heaters, the Eemax company produces the EcoSmart line of tankless water heaters. You can call EEMAX at 800-543-6163 if you have a question about their tankless water heaters. You can also contact them via email eemax.support@eemax.com

Rheem tankless water heater technical support:

714-433-2905 Rheem Customer Service Line

Company Address:
Noritz America Corp.
11160 Grace AveFountain Valley, CA 92708

FAQs about Rheem Tankless Water Heaters & Tank Water Heaters:

Noritz Tankless Water Heaters Logo

Noritz Water Heater Tech Support

Contact Noritz tankless water heater technical support at 1-866-766-7489. The Noritz’s technical support features include the streamlined menu that allows customers to get to the appropriate department very quickly. The top three cues are at the top of the menu: Press 1 for Tech Support and Warranty Claims; Press 2 for Sizing; Press 3 for Sales and Parts Ordering.

The next best way to contact Noritz customer support team is by calling their (714) 433-2905 phone number for their technical support department.

You can also use the Noritz Contact page to ask any questions, describe your problem. As per the Noritz website, their typical response time is up to 2 business days. If you have an urgent matter that requires immediate assistance, call Noritz water heater tech support at (866) 766-7489.

Company Address:
Noritz America Corporation
11160 Grace Ave
Fountain Valley, CA 92708

Rinnai Tankless Water Heaters

Rinnai Technical Support

Rinnai technical support phone number is (800) 621-9419.

You can also contact Rinnai tech support via their chat or by email marketing@rinnai.us

Read this page for Troubleshooting & FAQs.

USA Corporate Office Address:
103 International Drive
Peachtree City, Georgia 3026

Hours of operation:
Monday through Friday, 8 a.m. to 8 p.m. ET

Rinnai Corporation is a Japanese multinational company based in Nagoya, Japan. Rinnai manufactures a number of hi-quality gas appliances, including energy-efficient tankless water heaters, home heating appliances, kitchen appliances, gas clothes dryers and commercial-use equipment such as rice cookers, grills, and fryers.

AO Smith Tankless Water Heaters Logo

A. O. Smith Water Heater Tech Support

The best phone number for A. O. Smith water heater tech support is 800-433-2545.

If you have a general question or you are facing a technical issue with your water heater, call A.O. Smith customer service at 800-527-1953.
As reported by customers, the best time to call is in the morning – between 10:00 am and 11:30 am.
Pro tip: to get to a human quickly, dial extension 4656, or dial 0 for an operator.

Hours of operation:
Monday through Friday 7am to 7pm CST and Saturday 8am to 5pm CST.

If you have any questions about your warranty or need tech support, contact A.O. Smith at help@hotwater.com

A. O. Smith Corporation is one of the world’s leading manufacturers of residential and commercial water heaters and boilers headquartered in Ashland City, Tennessee. AO Smith produced its first water heater in 1939. Today, it manufactures a wide range of gas, electric, hybrid and tankless water heaters.

Bosch Tankless Water Heaters

Bosch Water Heater Tech Support

What is Bosch water heater tech support phone number?

Bosch water heater tech support is available at 800-283-3787 for residential products (and at 800-326-1400 for commercial products).

Email Bosch:
commercial.salessupport@us.bosch.com for Commercial Products
residential.salessupport@us.bosch.com for Residential Products.

Customer Service for Bosch Tankless Water Heaters:

Customer Service Operating Hours:
Monday – Thursday, 8am – 6pm EST
Friday, 8am – 5pm EST

Boilers: boiler.techsupport@us.bosch.com

Bosch Company Addresses in the US:
65 Grove Street, Watertown, MA 02472
555 NW 65th Court, Fort Lauderdale, FL 33309
50 Wentworth Avenue, Londonderry, NH 03053

Navien Tankless Water Heaters Logo

Navien Tech Support

Navien water heater tech support is available at 1-800-519-8794 (then select option 2).

Navien has two world-class support centers with live technicians.

Coast-to-Coast Coverage — 7 days/week, 363 days per year (closed only on Christmas and New Year Day)

Takagi Tankless Water Heaters

Takagi Tech Support

Takagi Customer Support phone number is 1-888-882-5244.

On their website, Tagaki claims that they are one of the few tankless water heater companies that have fully-staffed customer service and technical departments to better serve their customers. This is indeed important because many manufacturers of good water heaters, unfortunately, lack a quality technical support service in the last few years.

Takagi Tankless Water Heaters are made using the best quality materials for durability and long life, unlike storage tanks which take up too much space, eventually rust and are thrown away. Takagi tankless systems use all copper and brass waterways, stainless steel burners, a rust-resistant baked polyurethane finish, and even have pipe freezing protection.

Eemax Tankless Water Heaters Logo

Eemax Water Heater Tech Support

You can call EEMAX at (800) 543-6163 or (203) 267-7890 if you have a question about tankless water heaters. EEMAX is open from 8:00 am to 5:00 pm. You can also contact them via email support@eemaxinc.com or eemax.support@eemax.com

Eemax is recognized as the leading manufacturer of electric tankless water heating solutions for residential, commercial and industrial applications in the U.S. In addition to its Eemax-branded water heaters, the company produces the EcoSmart line of tankless water heaters.

Customer Support Service Numbers for Major Stores

Buy Tankless Water Heaters at Home Depot

HomeDepot Customer Support

If you need a water heater installation services from HomeDepot, call 1-855-400-2552.

Home Depot customer service 800 number:
For HomeDepot general help line/Customer Service call 1 (800) 466-3336 or
1 (800) 466-3337.

Also, you can email them at customer_care@homedepot.com or even chat with HomeDepot directly.

Homedepot.com Major Appliances Support: 1-877-946-9843

Buy Tankless Water Heater at Amazon Store

Amazon Customer Service Telephone Number

Amazon.com is a multinational tech company that focuses on e-commerce, cloud computing, digital streaming, and artificial intelligence. Amazon is one of the Big Four technology companies along with Google, Facebook and Apple.

Amazon customer service 800 number:
There are several phone numbers for Amazon, but the best one for Amazon Customer Service is 1 (888) 280-4331.

You can also email Amazon Customer Service at cis@amazon.com.

Hours of Operation of Amazon.com: 24/7

Amazon Customer Service Chat

You can also contact Amazon Customer Service via their live chat (or rather their chatbot=AI robot). Just click this link.

Buy Tankless Water Heater at Lowes

Lowes Customer Service Number

Lowes customer service phone number is 1 (800) 445-6937.

Hours of Operation (Customer Care):
Mon – Sat: 8 a.m. – 10 p.m. (ET)
Sun: 8 a.m. – 9 p.m. (ET)

Monday – Saturday: 8 a.m. – 11 p.m. (ET)
Sunday: 8 a.m. – 10 p.m. (ET)