Verified specifications
| Horsepower | 1/40 HP |
|---|---|
| Speed | 3250 RPM |
| Voltage | 115V, single-phase, 60 Hz |
| Amps | 0.43/0.45A |
| Motor | PSC, impedance-protected |
| Body | Bronze |
| Connections | 1/2" sweat, panel-mount |
| Seals | EPDM o-rings |
| Flow | 0–7 GPM |
| Head | 0–4.5 ft |
| Max pressure | 125 psi |
| Temperature range | 40–220°F |
| Duty | Domestic hot water recirculation — the go-to DHW recirc pump |
Verified variants: 003-B4 (3/4" sweat), 003-ST4 (SS 3/4" NPT), 003-SC4-1 (SS union). Suffixes: -IFC (integral flow check), -PNP (Plumb n' Plug — line cord + timer for retrofits). Send your variant and we will quote it.
ECM upgrade story: the Taco 006e3 dial is premarked with 003 performance points — see our 006e3 page.
Confirming the right replacement
Before we quote, compare these fields on your failed pump's nameplate. If any of them differ, send us a photo of the nameplate and we'll match it exactly rather than guessing:
- Full model number — including the part number (e.g. B&G P/N) where one exists
- Voltage and phase
- System duty: flow (GPM), head (ft), and fluid — heating water vs. potable water matters
- Flange size and orientation for in-line replacements
Other Taco models
Need a Taco 003-BC4?
Send the nameplate off your failed unit. We'll confirm the match and quote the 003-BC4 or a verified equivalent with availability and lead time.
Quote this pump