Masterbuilt 40 in Digital Electric Smoker with Window and Legs (MB20070122)
SKIP — Masterbuilt’s 40-inch digital cabinet on legs with a window: 970 sq in on four racks, digital controls to 275°F, a side chip loader. Not the 40-inch the roundups tested (MB20072918), and 3.9★ across 493 with 19% one-star.
The listing's size menu spans 6 models (30–40 in) — this page is the 40-inch Digital with Window & Legs. Check the size before you add to cart.
Contender in the Lightweight division — The Best Electric Smokers of 2026: The East Oak That Runs Four Hours on a Load of Chips, the Masterbuilt Its Maker Stopped Selling, and the 40-Inch Nobody Tested
Specs
| Temperature | 100–275°F, digital (Masterbuilt) |
| Element | Not published for this model |
| Cooking area | 970 sq in, 4 racks |
| Chip loading | Side loader |
| Meat probe | None |
| Weight | 72.1 lb (listing) |
| Owner rating | 3.9★ / 493 |
| Warranty | 1 year, proof of purchase; rust not covered; an unauthorized dealer voids it |
| Model | MB20070122 |
Pros
- 970 sq in on four racks — the most room on this page — on legs that put the controls at standing height
- A window, a side chip loader and a lockable latch
- Sold and shipped by Amazon, and current on masterbuilt.com
Cons
- 3.9★ across 493, and 19% of owners rate it one star
- Not the 40-inch the roundups tested: Serious Eats, Food & Wine and The Spruce Eats name the MB20072918, and no credentialed outlet has tested this one
- The critical tail is rust and electronics: door hinges that rust through, a control panel that takes in moisture, elements and controllers replaced inside two years
- Owners report it stalling around 240°F against a 275°F setting
- One year of warranty, rust excluded
Rust and electronics. "the door hinge rusted and fell off. To fix it, the door needs to replaced which can’t be purchased"; "Top control unit panel failed after a few uses as moisture and heat vented directly from the unit up and into the controls"; "2 years in and already replaced electrical unit on top, now the heating element"; "It runs 20 degrees below set temperature and will not get to the 275 max"; "I can’t get it to rise above ~240 degrees".
119 critical written reviews on 2026-10-03; the ten most recent read (Jun 29 – Sep 21, 2026), 7/10 Verified Purchase: controller or element failure 4, short of temperature 2, rusted door hinge 2, racks falling 1, chip loader handle broke 1, damaged on arrival 1 (themes overlap). One- and two-star are 23% of 493. · critical reviews read October 2026
“After about 4 years, I replaced the heating element and the digital control unit due to the fact that MasterBuilt’s own cover was not waterproof”— Dave F., Amazon · Verified owner
FAQ
Who is the Masterbuilt 40 in Digital Electric Smoker with Window and Legs (MB20070122) for?
You want the big Masterbuilt the roundups crowned, would rather have legs and a window than a test, and are relaxed about one owner in five rating it one star — in which case buy a waterproof cover first, because the critical tail is rust and dead controllers.
What do owners say about the Masterbuilt 40 in Digital Electric Smoker with Window and Legs (MB20070122)?
3.9★ across 493 owner ratings (Amazon, read October 2026 · global base). What owners complain about: Rust and electronics. "the door hinge rusted and fell off. To fix it, the door needs to replaced which can’t be purchased"; "Top control unit panel failed after a few uses as moisture and heat vented directly from the unit up and into the controls"; "2 years in and already replaced electrical unit on top, now the heating element"; "It runs 20 degrees below set temperature and will not get to the 275 max"; "I can’t get it to rise above ~240 degrees".
What is the warranty on the Masterbuilt 40 in Digital Electric Smoker with Window and Legs (MB20070122)?
1 year, proof of purchase; rust not covered; an unauthorized dealer voids it
Does the Masterbuilt 40 in Digital Electric Smoker with Window and Legs (MB20070122) warranty still apply if I buy it on Amazon?
Masterbuilt answers that in its own warranty document, which we read on 2026-10-18: Purchasing any Masterbuilt product through an unauthorized dealer voids the warranty. We quote the maker rather than deciding your case — read the document before you buy if the warranty is why you are buying.
Record
- — Added as the SKIP in the electric smoker showdown: 3.9 stars across 493 with 19% one-star, and not the MB20072918 the roundups tested. The tail is rusted hinges and failed controllers.
Warranty — and what changes if you buy it on Amazon
1 year, proof of purchase; rust not covered; an unauthorized dealer voids it · you are buying this on Amazon
Purchasing any Masterbuilt product through an unauthorized dealer voids the warranty.
Masterbuilt’s own warranty document · read
Read it yourself: Masterbuilt warranty document · we read it . Terms change without announcement, so treat this as a dated snapshot. How warranty works by buy path →
✓ Safety: no active recall — CPSC recall API checked 2026-10-03: RecallTitle=electric smoker → 4 (Char-Broil 24116, Masterbuilt 13241 and 06173, an unbranded 2006 recall 06074); control RecallTitle=Peloton → 5. RecallTitle=Masterbuilt → 3: 13241 (2013, electric models 20070312 and 20070512, wood chip tray), 06173 (2006, ESQ30B/ESQ30S) and 17048 (2016, propane). None names MB20070122.
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Data last verified: October 2026. Ratings are real, dated reads — never scraped or invented. Full methodology and monetization disclosure: how we test.