Bradford White 40-Gallon Electric Water Heater

The Bradford White 40-Gallon Electric Water Heater (M-I-40L6DS) is the plumber-channel residential electric tank for 2–3 person all-electric households. 6-year warranty, 0.93 UEF, 4500W dual-element, 52 GPH first-hour delivery. Same Bradford White build quality reputation as the gas Defender line, scaled to electric residential.

Headline specifications

• Capacity: 40 gallons
• Fuel: Electric, 240V
• Element: 4500W upper + 4500W lower (non-simultaneous)
• First Hour Delivery: 52 GPH
• Recovery: 21 GPH at 90°F rise
• UEF: 0.93
• Warranty: 6-year tank/parts
• Anode: magnesium
• Dimensions: 50" H × 21" diameter

Who this model is for

The Bradford White 40G electric is for: 2–3 person all-electric households, condos and apartments without natural gas, properties where a heat pump can't fit (insufficient air, low ceiling), homeowners using a Bradford White-network plumber for the install and trusting the build quality over big-box brands.

For 1–2 person households step down to 30G (Bradford White doesn't list a 30G electric in residential — pivot to AO Smith Conservationist 30G). For 3+ person households, step up to Bradford White 50G electric.

Where it beats the alternatives

Vs AO Smith Signature 100 40 Electric ($549): Bradford White ~$200 more from plumber channel. Same warranty (6 years). Bradford White's argument: better build quality, longer real-world service life. AO Smith's argument: same fundamentals at $200 less from Lowe's. For DIY install, AO Smith. For plumber-installed reliability bias, Bradford White.

Vs Rheem Performance Platinum 40 Electric ($649): Rheem 12-year warranty + EcoNet WiFi. Bradford White 6-year + no WiFi. Same price tier. Rheem wins on warranty math; Bradford White wins on plumber preference.

Vs AO Smith Voltex 50 HP ($1,649): Voltex pays back upfront premium in 4 years of operating savings. For long-horizon owners with heat-pump-suitable basements, the Voltex wins. For tight-budget or heat-pump-unsuitable installs, Bradford White 40G.

Where it falls short

6-year warranty trails Rheem Platinum 12-year at the same price tier. Bradford White's tank-longevity argument compensates but not on paper.

0.93 UEF resistance electric is class-standard but operates at ~3x the cost of a heat pump.

No WiFi, no leak detection, no smart-home integration.

Plumber-channel only. No big-box availability — DIY buyers struggle to source.

Magnesium anode (vs Coregard on AO Smith Signature Premier gas line — though Bradford White does ship Hydrojet sediment management on some models).

Install considerations

50" height + 21" diameter — standard closet form factor. 30-amp 240V dedicated circuit required. Reuse existing 40G electric circuit for direct swap.

Install cost: $350–$700 like-for-like. Bradford White plumber-channel install typically bundled at $1,400–$2,200 turnkey.

Maintenance

• Annual flush
• Anode check year 3, replace year 5
• T&P valve test annually
• Element inspection year 5

Bottom line

The Bradford White 40G Electric is the plumber-channel volume electric for 2–3 person households. 6-year warranty, 0.93 UEF, 52 GPH FHD. Build-quality reputation justifies the ~$200 premium over AO Smith Signature 100 for buyers using a Bradford White-network plumber. For DIY install or pure warranty math, the Rheem Performance Platinum 40 Electric at 12-year warranty is the alternative. For long-horizon electrification, the Voltex 50 HP wins on lifetime cost.