AO Smith Customer Care Number: How to Reach Support Quickly and Get Results

Primary Customer Care Contacts (by region)

If you need AO Smith customer care, the fastest route is to call the regional support number for your product line. Phone coverage and processes differ for water heaters (United States/Canada) and for water heaters and water purifiers (India and select Asian markets). Keep your model and serial number handy before you dial—this speeds up verification and troubleshooting dramatically.

Below are the most commonly used, official contact points for AO Smith consumer support. Always verify the latest details on the linked support pages, as hours and options can change.

• United States (AO Smith Water Heaters): Phone 1-877-817-6750. Support site: https://www.hotwater.com/support/contact. Warranty lookup: https://www.hotwater.com/support/warranty-lookup. Typical coverage includes residential tank and tankless water heaters sold under the AO Smith brand in the U.S.
• India (AO Smith Water Heaters and Water Purifiers): Toll-free 1800-103-2468; Alternate 1860-500-2468. Support site: https://www.aosmithindia.com/service-support and https://www.aosmithindia.com/contact-us. These numbers serve electric geysers, instant heaters, and RO/UV water purifiers sold in India.
• Corporate (U.S., not for technical troubleshooting): A. O. Smith Corporation, 11270 W Park Place, Milwaukee, WI 53224, USA. Main switchboard: +1-414-359-4000. Corporate site: https://www.aosmith.com. Use this only for corporate inquiries or escalations after you have a case ID from product support.

If you are outside the U.S. or India, start at the global site’s “Contact” or “Locations” page (https://www.aosmith.com/about/locations/) to locate the nearest AO Smith office or distributor. For branded subsidiaries (e.g., local partners), the local website often lists region-specific hotlines and service booking forms.

What to prepare before calling customer care

Have the model number, serial number, and proof of purchase date ready. For water heaters, the rating plate is typically on the side of the tank near the gas valve (gas models) or near the junction box (electric models). For tankless units, check the underside or side panel. For water purifiers in India, the product label is usually on the back or side panel of the cabinet and also on the warranty card. A clear photo of the rating plate can save time if you are asked to email or upload details.

Be ready to describe the installation (indoor/outdoor, vent type, water supply hardness in grains per gallon or ppm, inlet and outlet pipe sizes), the symptoms (error code on display, no hot water, fluctuating temperature, leaks), and what you have already tried (breaker reset, power cycle, filter change, flushing, descaling). If you know your water heater’s age, installation date, and whether a water softener is used, mention that—these details affect warranty eligibility and the troubleshooting path.

If you are seeking in-warranty service, keep a copy of the purchase invoice and installation record. For units registered online, note your registration confirmation or warranty ID. If you’re a property manager or contractor calling on behalf of a customer, have site access times and a contact person’s phone number ready to help schedule a technician efficiently.

Finding your model and serial number

On most AO Smith residential tank-type water heaters sold in North America, the model and serial are printed together on the rating plate. A common serial format encodes the manufacturing date, often with the first four digits indicating year and week (for example, 1915xxxxxx = week 15 of 2019); exact formats can vary by plant and product line. Tankless models list the model code on the side panel badge and the serial inside the front panel or near the gas control board. If the label is corroded or missing, check the installation manual pouch or the invoice from the installer.

For AO Smith India water purifiers and electric water heaters, the model and serial labels are typically on the back/side of the unit and repeated on the warranty card. Many purifier controllers also display a device ID in the settings menu. If you cannot access the back panel, take a photo using a phone’s selfie mode and a mirror or pull the unit slightly forward if safely possible. When booking service online via https://www.aosmithindia.com/service-support, you can enter the serial exactly as printed; avoid spaces unless they appear on the label.

If you are unsure whether your unit is AO Smith or a different brand under the same corporate family, look at the brand logo on the rating plate and consult the model prefix. The AO Smith support site provides manual and parts lookup by model that can confirm brand lineage and the correct support path.

Warranty and service scope: what to expect

Warranty terms vary by model and region. In the U.S., many AO Smith residential tank-type water heaters carry limited warranties commonly in the range of 6–12 years on the tank and 1–6 years on parts; labor coverage (if any) is typically limited and may be time-bound. Commercial models have different terms. The fastest way to confirm is the warranty lookup at https://www.hotwater.com/support/warranty-lookup using your model and serial number. Registration is recommended but not always required for coverage—check your specific product literature.

In India, AO Smith electric water heaters often include a product warranty plus a longer inner tank warranty period (for example, product coverage for a few years and extended inner tank coverage; exact terms differ by series and capacity). RO/UV water purifiers typically include a comprehensive warranty for a defined period, with filters and membranes treated as consumables. For precise terms, consult the warranty card in the box or the product page on https://www.aosmithindia.com. Out-of-warranty visits may incur a service charge and parts cost; the service team can quote prevailing rates for your city.

What’s generally covered: manufacturing defects and failures under normal residential use, provided installation meets local code and the product’s manual. What’s typically excluded: damage from improper installation or venting, dry-firing elements, scale buildup due to untreated hard water, sediment-related failures, electrical surges, and unauthorized repairs. Customer care will ask for installation details and may request photos or a video to validate the issue before dispatching a technician.

Alternative ways to reach AO Smith and how to escalate

Online forms are efficient when you can attach photos, invoices, or error screenshots. For the U.S., use the contact form at https://www.hotwater.com/support/contact and manuals/parts resources at https://www.hotwater.com/resources/manuals/. For India, “Book a Service” and “Contact Us” are at https://www.aosmithindia.com/service-support and https://www.aosmithindia.com/contact-us. Typical response times for web forms are within 1–2 business days; urgent no-hot-water situations are better handled by phone.

If your case requires escalation (for example, repeated failures, safety concerns, or parts delays), ask the agent for a case or ticket number and the next-level contact. For corporate escalations in the U.S., the AO Smith Corporation main line is +1-414-359-4000, 11270 W Park Place, Milwaukee, WI 53224. Note that the corporate switchboard will usually redirect you to product support unless you already have a case ID and a clear reason to escalate (such as a formal complaint or legal notice).

AO Smith maintains official websites and some regional social media handles. For privacy and warranty verification, avoid sharing serial numbers or addresses via unofficial channels. Do not rely on third-party directory sites for phone numbers—always confirm on the official pages linked above to avoid spoofed or outdated hotlines.

Safety steps and quick checks before you call

If you smell gas or suspect a gas leak: do not try to relight the pilot, do not use electrical switches, ventilate the area, leave the building, and call your gas utility’s emergency number first. For electric water heaters tripping a breaker, switch the breaker off and let the unit cool before any inspection. For water purifiers leaking from tubing, close the feed water valve immediately and unplug the unit. Document the issue with photos; these are useful for customer care and technicians.

Quick checks that speed resolution: verify power at the outlet and breaker (electric), ensure the gas valve is open and there is fuel supply (gas), note any error codes on the display (tankless/purifiers), confirm water supply and inlet filters are not clogged, and check that hot and cold lines are not cross-connected after a remodel. If you have recently replaced a faucet, mixing valve, or shower cartridge and now have lukewarm water, mention this—mixing hardware can affect perceived heater performance. Providing all these details during the first call often shortens diagnosis and, if needed, the parts dispatch or technician visit.

If you have an urgent no-hot-water situation outside phone hours, consider the online forms to start a case and include “No hot water” in the subject along with your location and availability. Then call at the next opening time with your case number for prioritization.