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AO Smith Customer Service

AO Smith Water Heater Customer Service — Phone, Hours, Issues

How to reach AO Smith residential water heater customer service, what they handle, and how to escalate when the front line cannot help.

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Updated May 2026 · AO Smith Water Heaters

AO Smith residential water heater customer service handles warranty lookup, claim authorization, parts ordering, troubleshooting guidance, and product-specific technical questions.

AO Smith contact info

  • Phone: 1-800-527-1953 (residential water heater customer service)
  • Hours: Monday–Friday 7am–6pm CT, Saturday 8am–3pm CT
  • Online warranty lookup: hotwater.com → Register & Warranty
  • Live chat: hotwater.com (lower-right widget during business hours)
  • iCOMM diagnostic chat: Voltex hybrid and smart-control models — through the mobile app

For commercial water heater issues, the line is separate: 1-800-433-2545.

What AO Smith customer service handles

  • Warranty lookup by serial number — see our warranty hub
  • Warranty claim authorization and parts dispatch
  • Tank-shell failure replacement coordination through distributors
  • Product-specific troubleshooting and error code lookup
  • iCOMM WiFi connectivity troubleshooting
  • Late registration exception requests (within first year)

What they don't handle

  • Labor reimbursement — AO Smith residential warranty is parts only
  • Out-of-warranty unit replacement
  • Plumber referrals beyond the dealer locator — see our dealers page
  • Water-quality-related failures (sediment damage, hard water scale not from missed flushes)

What to have ready

  1. Model number and serial number from the data plate (photograph it)
  2. Purchase date and registration confirmation if available
  3. Symptom description
  4. Troubleshooting steps already tried
  5. Installer name and phone if AO Smith-network

Escalation

  1. Ask for the warranty supervisor — they have authority on edge-case approvals
  2. Email [email protected] with photos — creates a paper trail
  3. BBB complaint — AO Smith responds to BBB complaints relatively quickly
  4. Distributor-channel escalation if your installer is AO Smith-network

Bottom line

AO Smith customer service: 1-800-527-1953 weekday business hours. Be prepared with model + serial + symptom. For warranty status before calling, use the online lookup at hotwater.com. For full warranty terms see our AO Smith warranty hub.

AO Smith FAQ

What is the AO Smith water heater customer service phone number?
1-800-527-1953 for residential water heaters, weekday business hours.
Does AO Smith cover labor under warranty?
No — AO Smith residential warranty covers parts only. Labor is your responsibility.