Takagi's primary distribution is through the AO Smith network (Ferguson, Hajoca, Winsupply, plus Lowe's retail). Amazon has Takagi listings from authorized sellers.
1. Takagi/AO Smith-trained installer (recommended)
Find through takagi.com / dealer locator. These installers:
- Complete Takagi factory training
- Have AO Smith distribution parts access
- Submit warranty claims directly
- For commercial T-T cascade installs: required expertise
2. Plumbing wholesalers
Ferguson, Hajoca, Winsupply — the AO Smith network. Full Takagi catalog including T-T commercial.
3. Lowe's
Lowe's stocks T-H3 and T-K residential Takagi units. Often paired with AO Smith installation services.
4. Home Depot
Limited Takagi presence (Home Depot favors Rheem RTGH on the tankless side).
5. Amazon
Carries Takagi T-H3, T-K, T-KJr from authorized sellers including Takagi/AO Smith America directly.
Channel comparison
| Channel | Price | Warranty | Models |
|---|---|---|---|
| Takagi-trained installer | Highest | Full + occasional extended labor | All |
| Plumbing wholesaler (Ferguson) | Middle | Full | All |
| Lowe's | Middle | Full if registered | T-H3 + T-K |
| Amazon (Takagi America) | Lower | Full | T-H3, T-K, T-KJr |
Commercial T-T cascade — installer-only
T-T cascade installs aren't appropriate for big-box install channels. Use a Takagi-trained commercial installer.
Bottom line
For T-H3, T-D2, T-K, T-KJr residential — wholesale, Lowe's, or Amazon all work. For T-T commercial cascade — Takagi/AO Smith-trained commercial installer only.