Brisket & Bark

Masterbuilt 40″ Electric Smoker Review

If an electric smoker is the right answer for your life, this is the size to buy — a packer lies flat and the chip loader lets you feed smoke without opening the door. Whether an electric is the right answer at all is the harder question, and we take it seriously below.

By Stephen V.Last updated How we pick

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There is a version of this review that is simply a list of things an electric smoker cannot do, and it would be accurate and useless. Electric cabinets make the palest bark and the mildest smoke of any cooker we cover. Everyone knows this, including the people who buy them.

The more useful question is: given that an electric smoker is what fits your life — because you cook on weeknights, or you have no outdoor space for a fire, or you genuinely do not want a hobby — is this the right one? And there the answer is a fairly clear yes, for one specific reason.

The size is the point

Masterbuilt states 970 sq in across four racks, and that number solves the single most avoidable problem in this category.

A whole packer is roughly twenty inches long. On a 30-inch electric cabinet it does not lie flat, so people fold the thin end of the flat back on itself or curl it against the wall. That doubled section is now twice as thick as the rest of the flat, insulated by itself, and it cooks at a completely different rate — you end up with one part overdone and another underdone on the same muscle.

Buying the 40-inch removes that entirely. It is the difference between a cooker that fits your brisket and one you fight, and it is worth the price step over the smaller cabinet more than almost any other upgrade in the range.

The chip loader is a real design win

This sounds like a minor convenience feature and is not.

In an electric smoker you need to reload wood chips roughly every 45 to 60 minutes during the first three or four hours — the window when the brisket surface is still cool and damp and actually taking on smoke. Without a side loader, that is a dozen door openings, each of which dumps heat out of a small, thinly insulated box and forces the thermostat to recover.

A side loader lets you feed the tray without breaking the seal. Given that door openings are one of the few things that genuinely destabilize an electric cook, this is a feature that earns its place.

Being straight about bark and smoke

Smoke. The element heats the chamber and a chip tray sits near it. The element switches off whenever the thermostat is satisfied — most of the time at 225°F — and wood only smokes while it is hot. So you get smoke in bursts, separated by gaps, rather than the continuous production of a wood-burning cooker. No model in this category escapes that, because it is the architecture rather than the execution.

Bark. Bark needs a drying surface, and a small sealed cabinet full of moisture evaporating off fifteen pounds of meat is close to the opposite environment. This is the category’s genuine weakness.

Three adjustments help meaningfully, and they are covered in full in brisket in an electric smoker: run 250°F rather than 225°F, keep the top vent wide open for the entire cook, and wrap considerably later than the usual advice — or not at all. A short unwrapped stretch at the top of the temperature range before serving will also firm a pale crust.

They improve the result. They do not turn it into an offset, and we would rather you knew that before you spent the money.

Where it genuinely beats better-regarded cookers

Overnight reliability. There is no fire to go out, no hopper to empty, no coal bed to die at 4am, no auger to jam. The list of things that can end the cook is essentially one item long: losing power. For an overnight brisket, that is a stronger position than a pellet grill is in.

A very good worst case. There is no creosote risk here, no bitter smoke, no runaway fire. The failure mode of an electric smoker is brisket that is fine but underwhelming — which is a far better bad day than most cookers can offer, and genuinely worth something on a cut this expensive.

Consistency. Thermostatic control at low temperatures is trivially easy for an element and harder for a small fire. It does the same thing every time.

The competition

The real decision at this price is against a pellet grill, because they cost similar money and both promise unattended operation. A pellet grill gives you more smoke, better bark and more versatility; the electric gives you lower running costs, mechanical simplicity and slightly better overnight reliability. That comparison is laid out properly in electric vs pellet smoker.

If what you actually want is Texas-style brisket with a heavy dark bark, neither is the answer, and the honest recommendation is a gravity-fed charcoal cabinet — real charcoal and wood chunks, under thermostat control.

A note on what this review is

We have not run this smoker in a lab and we do not own one. Everything above is reasoned from Masterbuilt’s published specifications, how electric cabinet smokers work, and what a whole packer requires. Where a figure is not published we say so rather than estimating. The full method is on our methodology page.

The specs, in full

Every figure below is Masterbuilt’s own published number, read from the listing linked in the card. Prices are live and refresh daily.

#1Best electric smoker for a full packer

Masterbuilt 40" Digital Electric Vertical Smoker

The electric cabinet with enough room to stop folding briskets. 970 square inches over four racks swallows a full packer laid flat, and the side chip loader means you top up smoke without opening the door and dumping your heat. If an electric smoker is the right answer for you, this is the size to buy.

Strengths

  • 970 sq in over four racks — a packer fits without folding
  • Side wood-chip loader adds smoke without opening the door
  • Digital thermostat holds a set temperature unattended

Trade-offs

  • Chip trays produce lighter smoke than charcoal or a stick fire
  • Costs as much as a capable pellet grill
Fuel / powerElectric + wood chips
FuelElectric element + wood chips
Total cooking area970 sq in (stated)
Temperature controlDigital thermostat
Chip loadingSide loader (no door opening)
ElementNot published

Specs read from the manufacturer listing, on August 10, 2026. “Not published” means the maker does not state that figure.

Frequently asked questions

Is the Masterbuilt 40-inch electric smoker good for brisket?

It is good at the things electric smokers are good at, and this is the model that removes the category's most annoying limitation. Masterbuilt states 970 sq in over four racks, which means a whole packer lies flat instead of being folded — folding is what causes uneven cooking on smaller cabinets. It will hold 225-250°F unattended all night. What it will not do is produce heavy bark or pronounced smoke.

Will a whole packer fit in the Masterbuilt 40?

Yes, laid flat, which is the main reason to buy the 40-inch over the 30-inch. Masterbuilt states 970 sq in across four racks. On a 30-inch cabinet a 20-inch packer generally has to be folded or curled, and the doubled section cooks differently from the rest — an avoidable problem that people routinely buy into by saving money on cabinet size.

What does the side chip loader do?

It lets you top up wood chips without opening the main door. That matters more than it sounds: an electric cabinet is small and poorly insulated relative to its volume, so opening the door dumps heat and moisture and the thermostat then works to recover. Since chips need reloading every 45 to 60 minutes during the early hours, a loader that avoids a dozen door openings is a genuine design improvement.

Can you get good bark in this smoker?

It is the hardest part. Bark needs surface evaporation, and a sealed electric cabinet is humid and low on airflow. Three things help substantially: run 250°F rather than 225°F, keep the top vent fully open for the entire cook, and wrap later than the standard advice suggests — often not until the surface is genuinely firm. An unwrapped 20-30 minutes at the top of the temperature range before serving will also firm up a pale crust.

Why does an electric smoker make less smoke than a pellet grill?

Because the heat source and the wood are separate systems. The element cycles off as soon as the thermostat is satisfied, and wood only smokes while it is hot enough to pyrolyze — so smoke arrives in bursts separated by long gaps. In a pellet grill the fuel is the heat, so wood burns continuously whenever the grill runs. This is a structural difference, not a quality difference between brands.

Is it safe to run overnight?

It is the cooker best suited to it, which is a large part of the appeal — there is no fire to go out and no fuel path to fail, so the only thing that stops it is losing power. Standard precautions still apply: run it outdoors on a non-combustible surface well clear of siding and overhangs, on a circuit that is not shared with anything heavy, and set a low-temperature alarm on your own probe in case the element fails.

Sources

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