Z Grills Review: Testing the 1000D4E Wi-Fi After 9 Years on Charcoal

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I have smoked our Thanksgiving turkey on a charcoal Weber Smoky Mountain for nine years running. In my turkey brine guide I wrote that I had been considering a switch to a pellet grill for the convenience, but that the WSM produces a flavor I love and runs reliably for the eight to ten hours a whole bird needs. I've been giving that switch some thought for quite a while.

Then Z Grills offered to send me the 1000D4E Wi-Fi, so I am finally making the switch and testing it. I'm writing the Z Grills review I would have wanted to read before buying, with my bias stated up front: I don't mind managing charcoal and I am slightly suspicious of pellet smoke output. I'm hoping to be proven wrong and look forward to testing this smoker grill. Even though I don't mind managing charcoal, I think I'll use a smoker a lot more if the set up to start cooking is simple and quicker.

This first version is research based. I have gone through the manufacturer specifications, the owner's manual and the peer-reviewed literature on what cooking temperature does to meat. The grill has now been delivered and is sitting in my hallway in two boxes, ready for me to assemble and test.

Disclosure: Z Grills sent me the 1000D4E Wi-Fi at no cost for review and I was not paid to write it. This Z Grills review is preliminary, based on research, the manufacturer documentation and nine years of my own smoking experience. The unit has arrived and I am filming the unboxing and assembly, then updating this page with my first cook.

Disclaimer: Links may contain affiliate links, which means we may get paid a commission at no additional cost to you if you purchase through this page. Read our full disclosure here.

Why I Am Testing a Pellet Grill at All

The case for charcoal is flavor and control. The case for pellets is that you set a number and walk away.

On the WSM, a long smoke means managing a charcoal ring, watching vents and accepting that weather changes your day. I have gotten good at it. I also know exactly how many hours of my life that has cost me and there are cooks I skip because I do not want to babysit a the smoker for hours on a random Tuesday.

That is the trade off I want to measure. Not whether a pellet grill is easier, it obviously is, but whether what is potentially given up in smoke flavor is small enough that I would use a smoker more often. A smoker I use weekly beats a smoker I use four times a year, even if the four cooks taste slightly better. My guess is they will be pretty similar, but we'll find that out soon enough!

Z Grills 1000D4E Specs and What They Actually Mean

These come from the Z Grills product listing and the owner's manual for this model.

One note on the numbers. Z Grills lists several 1000 series models with similar but not identical cooking areas, and I have seen 1,056, 1,068 and 1,080 square inches quoted across different pages for different models in the range. The figure on the 1000D4E product listing is 1,056 square inches. If you are cross-shopping the series, check the model number carefully rather than the series name.

The Upgrade Program: Four Grills for One Purchase

This is the part of buying a Z Grills that has no equivalent at Traeger or Weber and it is barely covered in other reviews. The 1000D4E is sold under what Z Grills calls the Upgrade Program, marketed as “Buy Once, 4 Pellet Grills.”

The structure is this. You buy one grill today and at year 5, year 10 and year 15 you are eligible for a brand new one. Choose the same or an equivalent model and the grill is free, you pay shipping. Choose a higher tier model and you pay the difference between its retail price and what you originally paid, plus shipping. You do not send the old grill back. Verification is photographs and you keep the original or get rid of it as you like.

Now the skeptical read, because a fifteen year promise deserves one. The terms include a reservation of rights letting Z Grills modify, update or terminate the promotion at its discretion. That is standard contract language and it is also the whole risk: the value of years 10 and 15 depends on the company still being here and still running the program. Z Grills points to a five year cash back program it launched in 2018 as evidence that it delivers, which is a fair thing to cite and more than most brands can show.

There is also a warranty question since Z Grills publishes two different numbers. The printed owner's manual that ships in the box states a three year limited warranty covering defects in materials and workmanship and it excludes paint, the firepot, the grill cover and corrosion damage. The Upgrade Program states a five year limited warranty on both the original grill and every upgrade grill.

Read the five year component list closely and something stands out. It covers the main grill body, grill lids, fan, cabinet, casters, power cord, meat probes, grates and warming racks, chimney stack and hopper lid. Those are almost all structural parts. The controller, the auger drive motor, the hot rod igniter and the RTD temperature probe are not on that list and on a pellet grill those are the components most likely to fail, because they are the ones that move, heat and compute. The manual's own troubleshooting section is largely devoted to exactly those four parts.

I am not calling that a gotcha, since a five year structural warranty is still better than a three year one. But if you are buying partly for the warranty, know that the longer term covers the metal rather than the electronics. Ask Z Grills to confirm which warranty applies to your order and what it covers before you rely on it. Also keep this in mind when comparing other smoker brands or any warranty for that matter. Always read the warranty thoroughly so you know what it actually covers.

How I would treat it: buy the grill on whether it is worth the current price to you today. If the year five upgrade arrives, that is a real bonus and something no other grill company I've seen offers.

Is the 1000D4E the Right Z Grills Model for You?

This is worth asking, because the 1000D4E is not the only large grill Z Grills sells and the closest sibling is a hundred dollars cheaper.

The 10502B looks like the value pick on the two headline numbers, since it gives you 24 more square inches and a 500°F ceiling for a hundred dollars less. Read the rest of the row and the picture changes. The 10502B is the more bare bones grill: a smaller 21 pound hopper, a heavy-duty steel lid rather than stainless, a bottom shelf rather than an enclosed cabinet, and no hopper cleanout, view window or side shelf.

So the extra hundred dollars buys seven more pounds of hopper, the stainless lid, somewhere dry to keep pellets, a side shelf to work on and the ability to swap wood flavors without scooping by hand. For someone smoking regularly rather than occasionally, that is a reasonable trade for a hundred extra dollars.

The 450°F ceiling is the trade I would think hardest about, because every other current model reaches 500°F. If searing is a regular part of how you cook, that gap matters more than 24 square inches. If you smoke low and slow and finish steaks in a cast iron pan indoors the way I do, it is close to irrelevant. You can compare the current lineup and pricing on the Z Grills site.

What the Wi-Fi and PID Control Really Do

These two features are a big reason a pellet grill costs what it does.

PID control stands for proportional integral derivative, a control loop most people meet in a thermostat or a cruise control. Instead of switching the auger fully on when the grill drops below target and fully off when it goes above, a PID controller makes small continuous adjustments based on how far off target it is, how long it has been off target and how fast it is moving. In practice that means tighter temperature and fewer swings, especially in wind or cold.

This is the single biggest functional difference from my WSM. On charcoal I am the control loop. I am reading a dome thermometer or my Thermoworks wireless, adjusting a vent, waiting to see what happens and correcting again.

Wi-Fi and Bluetooth connect the grill to the Z Grills app, which lets you set and change temperature, watch both meat probes and shut the grill down from inside the house. For an eight hour or overnight cook that is meaningful.

The honest caveat is that grill apps are frequently the weakest part of the product. Connection drops, notification reliability and whether the app keeps working after a firmware update are exactly the things a spec sheet cannot tell you and ongoing testing can. That is on my list and definitely something I'm interested in testing since wireless thermometers I've owned over the years have varied in their reliability.

Delivery, Assembly and the First Cook Plan

Mine has arrived, so I can at least tell you what shows up on your doorstep even though I have not built it yet. It comes in two cartons, not one, and both are labeled with their own weights and dimensions.

Those numbers answer a question I had initially listed as unknown: this is a 171 pound delivery in total and the heavy carton alone is 127 pounds. Z Grills prints a team lift icon on the bottom of that box, and the owner's manual states that at least two people should assemble the grill. That is the manufacturer telling you the same thing I am. Plan on a second person or a hand truck, and decide where the grill is going before it lands, because repositioning a 127 pound carton afterward is its own project. Once assembled it rolls on locking casters, so moving it around on the patio is not the problem. Getting it to the patio is.

One practical note if you are having this shipped. The two cartons can arrive separately, so check that both have landed before you set aside an afternoon to build it.

The owner's manual also spells out two first-use steps that people skip and then regret. Priming the auger: on first startup it takes roughly eight minutes for pellets to travel through the auger tube before they start dropping into the fire pot. If you do not wait for that, you will think the grill is broken when it is just empty. The burn-off: before cooking any food, run the grill at its highest setting of 450°F for 30 minutes to burn off the anti-rust oil applied at the factory. This is not optional and skipping it means that oil will end up on your first cook…not tasty I'm sure.

Here is what I am testing and filming:

• Unboxing and full assembly, including how long it takes and where a second pair of hands is required
• Time to reach 225°F from cold and recovery time after opening the lid
• Actual grate temperature against the set temperature, measured with my own probes rather than the built-in readout
• Smoke output at the 180°F peak-smoke setting that Z Grills specifies
• App reliability across a full length cook, not just the first hour
• A first cook of smoked chicken breast, the cut that can be challenging with uneven temperature
• Pellet consumption over a long smoke

Error Codes and Things the Manual Tells You That the Website Does Not

I read the owner's manual cover to cover before the grill arrived, which is not something I would normally do outside of a review. However, it contains several things worth knowing that appear nowhere in the marketing.

The controller throws seven error codes. Knowing what they mean may save a support call.

Never interrupt the shutdown cycle. When you shut the grill down, the auger stops but the fan keeps running for ten minutes to burn off the pellets left in the firepot. The manual warns that cutting power during that cycle could cause a fire in the hopper chamber. Let it finish and switch off on its own.

Never add pellets directly to the firepot. If you run out mid-cook and lose the fire, the manual is explicit: let the grill cool and start over with the initial firing procedure. Adding pellets by hand to a hot firepot risks an over-fire.

What makes a hopper run dry. The 28 hour figure is a best case, not a typical cook. Z Grills does not publish a pounds per hour burn rate at any temperature, and the manual is upfront that outside temperature, humidity, wind and pellet quality all change output and cooking time. A 225°F smoke on a mild day and a 400°F cook in the wind are not the same grill. The manual recommends sheltering the grill from wind because it affects temperature output, heat retention and how fast it recovers when you open the lid, and it tells you not to open the lid frequently for the same reason. Every lid opening is recovery time the auger pays for in pellets. Cold and wind are the expensive ones, which is why a January brisket is a different proposition from an August one. Measuring real consumption over a long smoke is on my first cook list precisely because nobody publishes it.

The likelier failure is not an empty hopper. It is losing the fire while the hopper is still full, and there are two common routes. The manual says excess ash in the firepot may cause the fire to go out, and that this is especially true on the SMOKE setting, which is exactly where you would be sitting during a long overnight cook. The other route is damp pellets: they swell, break apart and can jam the feed system, so the hopper reads full while nothing is reaching the firepot. Both leave you with plenty of fuel and no fire.

So yes, start a long cook with a full hopper, but that is the easy part. Clean the ash before any long smoke and keep your pellets dry, because those are the two things that put out a fire that had fuel left. This is where the enclosed cabinet should earn its keep as somewhere dry to store pellets.

And no, you cannot clean the ash mid-cook. The manual is emphatic here, in capitals: make sure the fire is out and the unit is off, unplugged and cold before attempting to clean ash from the grill. The same rule runs through the whole maintenance section, and the safety pages add that you should never touch any part of the grill while it is hot. That holds even though the 1000D4E has a pull-out ash drawer, because easy cleanout means not taking the barrel apart, it does not mean doing it while still hot. A shop vac is the best tool once everything is cold.

This is the real reason the pre-cook clean matters. Ash is not something you can correct at hour six, so the cleaning you do beforehand is the only chance you get. If it does smother the fire mid-smoke, you end up in the same procedure anyway: turn off, unplug, let it cool, pull the grates, grease pan and heat baffle, clear the unburned pellets and ash out of the firepot, then restart with the initial firing steps and never hand feed the firepot.

It is not a rainy day grill. The manual says not to use it in the rain and to keep the hopper dry, because wet pellets swell, break apart and jam the auger. That sits awkwardly against marketing that talks about cooking in any weather and it is worth knowing if you have no covered spot outside.

Other things worth knowing before cooking: the grill defaults to 275°F on startup and adjusts in 5°F steps. It needs a 120 volt grounded outlet. Preheat to desired temperature before food goes on.

Two hopper lid rules that sound contradictory and are not. The Wi-Fi antenna has a magnetic base on a long lead and ships coiled under the hopper. The manual suggests moving it to the top of the hopper lid or a nearby wall if the signal is weak, and separately warns never to put it on any hot part of the grill. Those two instructions sit together, which tells you Z Grills does not count the hopper lid as a hot surface, that tracks since the hopper holds pellets rather than fire. Elsewhere the safety pages say the hopper lid is not a shelf and is a tip hazard. That one is about weight, not heat: do not stack anything heavy on it. A magnetic antenna base weighs almost nothing, so that should be fine. However, the manual never gives is a number for how warm that lid runs on a long cook, so I have added it to the testing list.

Z Grills vs Traeger vs My Weber Smoky Mountain

Most people shopping this grill are comparing it to a Traeger and a smaller group are doing what I am doing and weighing pellets against charcoal. Those are different questions.

That last row is the one people forget. A pellet grill is an appliance with a motor, a fan and a circuit board. My WSM is a metal bowl. Nine years in, the WSM has never failed because there was nothing in it to fail. Long-term reliability is a real question for any pellet grill and it is not something a first cook can answer, which is why I will be updating this page over months rather than calling it finished after one weekend.

What the Research Says About Smoking Temperature

This is the part no grill review covers and the part I care about most, because it is the reason low and slow cooking is interesting beyond flavor.

When meat is cooked at high heat, two families of compounds form: heterocyclic amines, which come from reactions between amino acids and creatine in the muscle, and polycyclic aromatic hydrocarbons, which come largely from fat dripping onto a heat source and depositing back onto the food as smoke. Both are studied for their genotoxic potential.

The temperature relationship is the useful bit. A study in Food Additives and Contaminants Part A measured both compound families in grilled beef at 150, 200, 250, 300 and 350°C and found the lowest concentrations at 150°C, with formation of both rising as temperature climbed and benzo[a]pyrene increasing markedly at 300 and 350°C. Marination significantly reduced most of the heterocyclic amines measured.

Put that in the units we cook in. A 225°F smoke is about 107°C. That sits well below the bottom of the range in that study and far below the 300 to 350°C where the sharpest increases showed up. Direct searing over a hot grate lands at the other end.

This is not a one-sided story though. A 2024 review in Food Research International covers how frying, grilling, roasting and smoking all generate these compounds and notes that curing and smoking specifically change the character of meat products. Smoke deposition is itself a route for polycyclic aromatic hydrocarbons, so a long smoke is not automatically cleaner just because the temperature is lower. And a cross-sectional study of 70 adults published in Foods found that grilled, broiled and barbecued cooking methods were among those mainly responsible for dietary intake of both compound families, though that is observational and measures intake rather than outcomes.

Where that leaves me: low and slow at 225°F avoids the temperature range where these compounds accelerate fastest, which is a point in favor of smoking over searing. It does not make smoked meat a “health food” per se and the smoke itself is a variable working in the other direction. Keeping fat from dripping directly onto the heat source, trimming heavy fat caps and not cooking to a heavy char are the practical levers and they matter more than which brand of grill you own.

Where a Big Smoker Fits in a High Protein Kitchen

A thousand square inches is a lot of grill for a household of two, which is what we are. The reason I want that space is not always for entertaining, it is batch cooking.

If you are trying to hit a real protein target, the limiting factor is almost never knowledge, it is having cooked protein in the fridge on a Wednesday when you are tired. Smoking six or eight chicken breasts at once solves that in a single unattended session and smoked chicken holds and reheats better than most grilled chicken because it was never cooked hot enough to tighten up.

That one of the frames I will be reviewing this grill through and it is a different question than the one most pellet grill reviews answer. I do not need to know if it can do a competition brisket. I need to know if it makes a week of batch cooking protein easier.

For sourcing, I use Butcher Box, Wild Pastures and US Wellness Meats depending on what I am cooking, and a good wireless thermometer like the ThermoWorks wireless thermometer is still useful even with the built ins. If you're checking the grill temperature as well as several different cuts of meat, additional thermometers come in handy.

Who the 1000D4E Is For, and Who Should Skip It

It looks like a fit if you cook for a crowd or batch cook seriously, you want overnight smokes without setting an alarm, you value temperature precision over maximum smoke and you have the patio space, ideally under cover if you want to use it in any weather and a nearby outdoor outlet.

Skip it if you are cooking for one or two and rarely batch, you want a hard sear as your main use since 450°F is roasting rather than searing heat, you have no outdoor power or you are the kind of cook who wants heavy smoke flavor above everything. If that last one is you, a charcoal smoker is still the answer and I say that as someone who has been happy with one for nine years.

If a pellet smoker sounds like a fit, you can check the current price and configuration here.

What I Still Cannot Tell You

I would rather be clear about this than pad the review with confident-sounding guesses. As of today I have not cooked on this grill. I cannot tell you:

• Whether the grate temperature matches the set temperature, and by how much it drifts
• How much smoke it produces at the 180°F peak-smoke setting
• Whether the app stays connected through a long cook
• Whether the claimed 30 to 45 minute assembly holds up, and which steps need two people
• How it holds temperature in wind or cold
• Pellet consumption per hour
• Anything about long-term durability

All of that is coming, and it is what will turn this from a specs-based Z Grills review into a tested one. The unboxing and assembly video is being filmed and the first cook follows right after. If you have specific questions you want answered in the update, leave a comment and I will try to work them into the first cook. I would rather test what you want to know than what I assume you want to know.