Takagi customer service: 1-877-882-5244. Hours: Monday-Friday, 8 AM - 8 PM Eastern. Hold times typically 10-20 minutes. Takagi operates under the AO Smith umbrella but maintains Takagi-specific technical expertise.
What to have ready
- Model number from the data plate
- Serial number
- Error code if displayed
- Install date if you have records
- Symptom summary
What Takagi support can do
- Walk through error code diagnostics
- Confirm warranty by serial
- Dispatch parts to a Takagi-trained installer via AO Smith distribution
- Locate the nearest Takagi-trained installer
- Email manuals
What they won't do
- Ship parts directly to homeowners
- Dispatch technicians (that's the installer's job)
- Help with hydronic system design
AO Smith parentage
Takagi support operates under AO Smith corporate but with Takagi-specific technical team. For parts, the AO Smith distribution back-end means parts availability is typically good across US markets.
Bottom line
Takagi support is competent. The AO Smith distribution leverage means parts are easier to source than for purely standalone Japanese brands.