Masterbuilt MB20070421 Digital Electric Smoker 30 in
- Fuel Type: Electric
- Power Source: Corded electric
- Inner Material: Alloy Steel
- Outer Material: Alloy Steel
Last refreshed Jun 21, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A 30 inch digital electric vertical smoker with 710 square inches of cooking space across four chrome-coated racks, a side wood chip loader and digital controls up to 275 degrees F.
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ASIN: B08F8L6S2RModel: MB20070421Category: Smokers
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Overview
The Masterbuilt MB20070421 is a 30 inch digital electric vertical smoker with 710 square inches of cooking space across four chrome-coated racks, a side wood chip loader, and digital time and temperature controls up to 275°F.
- 710 square inches across 4 chrome-coated racks
- Digital control up to 275°F
- Side loader adds chips without opening the door
- Insulated cabinet with lockable door latch
Who it's for
Fits someone who wants a set it and forget it smoker for weekend batch cooking of chicken, pork, or ribs without babysitting a charcoal fire. Less suited to anyone chasing tight, competition-grade temperature control, since owner testing found real drift around the set point.
Pros and cons
- Side loader adds smoke without opening the door
- 710 sq in fits multiple chickens or rib racks
- Owners describe assembly and daily use as straightforward
- Temperature drifted more than 3 degrees off target
- Control panel failed from trapped moisture after light use
- Assembly instructions unclear on required tools
Performance notes
The side wood chip loader is the feature owners single out, since it lets you add smoke flavor without opening the main door and losing heat. Digital controls set time and temperature up to 275°F, though one owner's own testing found the actual chamber temperature swinging more than 3 degrees off target for a third of a cooking session. The insulated, lockable door is meant to hold in that heat and smoke, and a removable water bowl and rear grease tray handle moisture and cleanup.
Specifications
| Brand | Masterbuilt |
|---|---|
| Model | MB20070421 |
| Dimensions & fit | |
| Item Weight | 50.3 poundslower than 63% of 121 smokers |
| Item Dimensions D x W x H | 22 × 24 × 42 inches |
| Power & efficiency | |
| Fuel Type | Electric |
| Power Source | Corded electric |
| Construction & materials | |
| Inner Material | Alloy Steel |
| Outer Material | Alloy Steel |
| Color | Black |
| Included components | |
| Included Components | Digital Electric Smoker |
| Other details | |
| Part Number | MB20070421 |
| Item Type Name | Digital Electric Smoker |
| Form Factor | Vertical |
Closest rivals on specs
Frequently asked questions
How much cooking space does the Masterbuilt MB20070421 have?
It has 710 square inches spread across four chrome-coated racks, enough for up to 7 chickens, 2 turkeys, 4 pork butts, or 4 racks of ribs at once.
What temperature does the Masterbuilt MB20070421 smoker reach?
The digital control sets time and temperature up to 275°F, though one owner's own measurements found it drifting more than 3 degrees off that set point part of the time.
Can you add wood chips without opening the smoker door?
Yes, the side wood chip loader is designed to let you top up chips without opening the main door, which keeps heat and smoke from escaping.