Bradford White and AO Smith compete head-to-head at the plumber channel — AO Smith ProLine and ProLine Master lines are direct competitors to Bradford White Defender and ICON. AO Smith also has Lowe's; Bradford White doesn't.
The channel divide
| Bradford White | AO Smith | |
|---|---|---|
| Big-box availability | No | Yes — Lowe's primary |
| Plumber-channel tier | Defender / ICON | ProLine / ProLine Master |
| Plumber-channel warranty | 6 years (10-yr upgrade) | 10 years (ProLine Master) |
| Anode | Magnesium standard (Al-Zn upgrade) | Coregard (Al-Zn) standard |
| Sediment management | None (manual flushing) | Hydrojet |
| Heat pump warranty | 6 years (AeroTherm) | 10 years (Voltex) |
| Tankless heat exchanger warranty | 15 years (Infiniti GR) | 15 years (ProLine Tankless) |
| WiFi / smart-home | No | iCOMM on Voltex + premium |
Where Bradford White wins
- Tank longevity reputation in plumber community
- Strict plumber-channel install quality (no DIY)
- Strong dealer network in some regions where AO Smith plumber-channel is thinner
Where AO Smith wins
- Lowe's big-box availability for DIY shoppers
- ProLine Master 10-year plumber-channel warranty (vs BW Defender 6-year)
- Coregard anode (longer-lasting than BW magnesium)
- Hydrojet sediment management (no BW equivalent)
- Voltex heat pump 10-year warranty (vs BW AeroTherm 6-year)
- iCOMM WiFi on premium tiers
Specific matchups
Bradford White Defender 50G vs AO Smith Signature Premier 50G Gas (Lowe's)
AO Smith wins on warranty (9 vs 6 years), Coregard anode, Hydrojet, Lowe's availability. BW wins on tank longevity reputation. For DIY/Lowe's: AO Smith. For plumber-installed where plumber is BW-network: BW.
Bradford White Defender 50G (plumber) vs AO Smith ProLine Master 50G (plumber)
The plumber-channel head-to-head. AO Smith ProLine Master ships 10-year warranty; BW Defender 6-year (10-yr upgrade). Coregard vs magnesium anode goes to AO Smith. AO Smith wins on warranty math; BW wins on installer preference.
Bradford White AeroTherm Plus 50G HP vs AO Smith Voltex 50G HP
AO Smith wins on warranty (10 vs 6 years) + iCOMM WiFi. AO Smith Voltex is the better long-horizon heat pump choice unless installer is BW-network.
Bradford White Infiniti GR vs AO Smith ProLine Tankless 10 GPM
BW wins on flow (11.1 vs 10 GPM). Tie on warranty (15-year heat exchanger each). BW wins on raw spec; choice goes to installer preference.
Bottom line
AO Smith has channel advantages (Lowe's) and warranty advantages (ProLine Master 10 vs Defender 6, Voltex 10 vs AeroTherm 6) over Bradford White. Bradford White's response is tank-longevity reputation — which is real but doesn't show up in warranty math.
For DIY: AO Smith. For plumber-installed where plumber stocks BW: Bradford White. For plumber-installed where plumber is flexible: AO Smith ProLine Master typically wins on warranty.
For the alternative comparison see BW vs Rheem.