
Masterbuilt MB20070421 Digital Electric Smoker

IMPORTANT SAFEGUARDS
Warning ![]()
- This manual contains important information necessary for the proper assembly and safe use of the appliance.
- Read and follow all warnings and instructions before assembling and using the appliance.
- Keep this manual for future reference.
Failure to follow these instructions could result in fire, explosion, or burn hazard, which could cause property damage, personal injury, or death.![]()
CARBON MONOXIDE HAZARD ![]()
- Burning wood chips gives off carbon monoxide, which has no odor and can cause death.
- DO NOT burn wood chips inside homes, vehicles, tents, garages, or any enclosed areas.
- Use only outdoors where it is well ventilated.
WARNINGS AND IMPORTANT SAFEGUARDS ![]()
READ ALL INSTRUCTIONS
- Smoker is for OUTDOOR HOUSEHOLD USE ONLY.
- Never use inside enclosed areas such as patios, garages, buildings, or tents.
- Never use inside recreational vehicles or on boats.
- Never operatea moker under overhead construction, such as roof coverings, carports, awnings, or overhangs.
- Never use a smoker as a heater (READ CARBON MONOXIDE HAZARD).
- Maintain a minimum distance of 10ft (3m) from overhead construction, walls, rails, or other structures.
- Keep a minimum 10ft (3m) clearance of all combustible materials such as wood, dry plants, grass, brush, paper, or canvas.
- Keepthe appliance clear and free from combustible materials such as gasoline and other flammable vapors and liquids.
- Use the smoker on a level, non-combustible, stable surface such as dirt, concrete, brick, or rock.
- Smoker MUST be on the ground. Do not place a smoker on tables or counters. Do NOT move the smoker across uneven surfaces.
- Do not use a smoker on wooden or flammable surfaces.
- Do not leave a smoker unattended.
- Never use a smoker for anything other than its intended use. This smoker is NOT for commercial use.
- Keep a fire extinguisher accessible at all times while operating the smoker.
- Before each use, check all nuts, scre,ws and bolts to make sure they are tight and secure.
- Use of alcohol, prescription, or non-prescription drugs may impairthe user’s ability to properly assemble or safely operate the smoker.
- Extreme caution must be used when moving an appliance containing hot oil or other hot liquids.
- Always attach the plug to the appliance first, then plug the cord into the wall outlet. To disconnect, turn the control to OFF, then remove the plug from the wall outlet.
- Do not use the appliance for anything other than its intended use.
- Fuel, such as charcoal briquettes, is not to be used with the appliance.
- Use only on a properly grounded outlet.
- A short power-supply cord (or detachable power-supply cord) should be used to reduce the risk resulting from becoming entangled in or tripping over a longer cord.
- The connection to an extension cord should be kept dry and off the ground.
- WARNING: Charcoal or similar combustible fuels must not be used with this appliance.
- The appliance should be supplied through a residual current device (RCD) having a rated residual operating current not exceeding 30 mA.
- The appliance is to be connected to a socket-outlet having an earthing contact (for class I appliances).
- The supply cord should be regularly examined for signs of damage, and the aappliance shouldnot be used if the cord is damaged.
- Keep children and pets away from smokers at all times. Do NOT allow children to use a smoker. Close supervision is necessary when children or pets are in the area where a smoker is being used.
- Do NOT allow anyone to conduct activities around the smoker during or following its use until it has cooled.
- Avoid bumping or impacting the smoker.
- Never move the smoker when in use. Allow the smoker to cool completely (below 115°F (45°C)) before moving or storing.
- The smoker is HOT while in use and will remain HOT for a period of time afterwards and during the cooling process. Use CAUTION. Wear protective gloves/mitts.
- Do not touch HOT surfaces. Use handles or knobs.
- Do not use wood pellets.
- Never use glass, plastic, or ceramic cookware iin asmoker. Never place empty cookware in the smoker while in use.
- Accessory attachments not supplied by Masterbuilt Manufacturing, LLC are NOT recommended and may cause injury.
- The wood chip tray is HOT when the smoker is in use. Use caution when adding wood chips.
- Be careful when removing food from the smoker. All surfaces are HOT and may cause burns. Use protective gloves or long, sturdy cooking tools.
- Always use the smoker in accordance with all applicable local, state, and federal fire codes.
- Dispose of cold ashes by placing them in aluminum foil, soaking them with water, and discarding them in a non-combustible container.
- Do not store a smoker with HOT ashes inside the smoker. Store only when all surfaces are cold.
- When using electrical appliances, basic safety precautions should always be followed, including the following: 1) Do not plug in the electric smoker until fully assembled and ready for use. 2) Use only an approved grounded electrical outlet. 3) Do not use during an electrical storm. 4) Do not expose the electric smoker to rain or water at anytime.
- To protect against electrical shock, do not immersethe cord, plug, or control panel in water or other liquid.
- Do not operate any appliance with a damaged cord or plug, or after an appliance malfunctions or has been damaged in any manner. Contact Masterbuilt Customer Service for assistance at 1-800-489-1581.
- Longer detachable power-supply cords or extension cords are available and may be used if care is exercised in their use.
- If a longer detachable power-supply cord or extension cord is used: 1) The marked electrical rating of the cord set or extension cord should be at least as great as the electrical rating of the appliance; and 2) The cord should be arranged so that it does not drape over a counter top or tabletop where it can be pulled by children or tripped over unintentionally.
- The extension cord must be a grounding-type 3-wire cord.
- Outdoor extension cords must be used with outdoor use products and are marked with the suffix “W” and with the statement “Suitable for Use with Outdoor Appliances.”
- CAUTION – To reduce the risk of electric shock, keep the extension cord connection dry and off the ground.
- Do not let the cord hang on or touch hot surfaces.
- Do not place on or near a hot gas or electric burner, or in a heated oven.
- Fuel, such as charcoal briquettes or heat pellets, is not to be used in an electric smoker.
- To disconnect, turn the control panel OFF, then remove the plug from the outlet.
- Unplug from the outlet when not in use and before cleaning. Allow the smoker to cool completely before adding/removing racks, the drip tray, or the water bowl. The drip pan is only for the bottom of the electric smoker. Do not put the drip pan on the rack. This may damage the electric smoker.
- Do not clean this product with a water sprayer or the like.
- Store smoker indoors when not in use, out of reach of children.
SAVE THESE INSTRUCTIONS
Structural Proximity and Safe Usage Recommendations
REMINDER: Maintain a minimum distance of 10 feet from the rear, sides, and top of the smoker to overhead construction, walls, rails, or other combustible construction. This clearance provides adequate space for proper combustion, air circulation,n and venting.

WARNING ![]()
An electric power cord is a trip hazard.

Parts List


Hardware List

DO NOT RETURN TO RETAILER for assembly assistance, missing or damaged parts. Please contact MASTERBUILT customer service at 1-800-489-1581 or support.masterbuilt.com. Please have the model number and serial number available. These numbers are located on the silver rating label on the smoker.
BEFORE ASSEMBLY READ ALL INSTRUCTIONS CAREFULLY.
- Assemble on a clean flat surface.
- Tools needed: Adjustable wrench, Phillips head screwdriver
- Approximate assembly time: 25 minutes
- Actual product may differ from the picture shown.
- Some assembly steps may have been completed in the factory.
Assembly


Operating Instructions

CONTROL PANEL
To set the temperature
- Press the ON/OFF button.
- Press the SET TEMP button once-LED display will blink.
- Use up or down arrows to set the temperature. Maximum temperature setting is 275°F (135°C).
- Press the SET TEMP button again to lock in the temperature.
Note: Heating will not begin until the timer is set.
To set a timer
- Press the SET TIME button once-LED display for hours will blink.
- Use up or down arrows to set hours.
- Press the SET TIME button again to lock in hours. The minutes LED will start blinking.
- Use up or down arrows to set minutes.
- Press SET TIME to lock in minutes and start the cook cycle. The heat will turn off when the time has expired.
NOTE: When the outside temperature is cooler than 65°F (18°C) and/or the altitude is above 3,500 feet (1067m), additional cooking time may be required. To ensure that meat is completely cooked, use a meat thermometer to test internal temperature or usea meat probe, if featured.
To RESET the control panel
If the control panel displays an error message, turn the smoker off and unplugitr from the outlet. Wait ten seconds, plug the smoker back into the outlet, then turnthe smoker on.
WOOD CHIP LOADER
- Wood chip loader and wood chip tray MUST be in place when using the moker. This minimizes the chance of wood flare-ups.
- Wood chips must be used to produce smoke and create the smoke flavor.
- Before starting the smoker, place ½ cup of wood chips in the chip loader. Never use more than ½ cup of wood chips at a time. Never use wood chunks or wood pellets.
- Insert the wood chip loader into the smoker. Wood chips should be level with the top rim of the wood chip loader.
- Turn the handle clockwise in the direction of the arrow mark on the smoker to unload wood chips. Wood chips will drop into the wood chip tray. Turn the handle counterclockwise to the upright position and leave the wood chip loader in place.
- If wood chips do not smoke on the low setting, increase the temperature to 275°. After 8 to 10 minutes, or when wood chips begin to smolder, reduce the temperature to the desired low setting.
- You may use dry or pre-soaked wood chips in your smoker. Dry chips will burn faster and produce more intense smoke. Chips pre-soaked in water (for approximately 30 minutes) will burn more slowly and produce a less intense smoke.
- Check the wood chip tray periodically to see if the wood has burned down. Add more chips as needed.
- Do not leave old ashes in the wood chip tray. Once the ashes are cold, empty the tray. The tray should be cleaned beforer to and after each use to prevent ash buildup.

ADDING MORE WOOD DURING STHE MOKING PROCESS
NOTE: Never add more than ½ cup (1 filled chip loader) at a time. Additional chips should not be added until any previously added chips have ceased generating smoke.
- Pull the wood chip loader from the smoker.
- Place wood chips in the wood chip loader and insert them into the smoker.
- Turn the handle clockwise in the direction of the arrow mark on the smoker to unload wood chips. Wood chips will drop into the wood chip tray.
- Temperature may spike briefly after wood chips are added. It will stabilize after a short time. Do not adjust the temperature setting.
CAUTION ![]()
- Keep the smoker door closed when adding wood chips. A flare-up may occur when the door is opened. If wood chips flare up, immediately close the door and vent, wait for the wood chips to burn down, then open the door again. Do not spray with water.
- The wood chip loader will be HOT even if the handle is not.
- Never use wood chunks or wood pellets
PRE-SEASONING
PRE-SEASON SMOKER BEFORE FIRST USE. Some smoke may appear during this time; this is normal.
- Make sure the water bowl is in place WITHOUT WATER.
- Set the temperature to 275°F (135°C) and run the smoker for 3 hours.
- Add 1/2 cup of wood chips to the wood chip loader during the last 45 minutes to complete pre-seasoning.
- Shut down and allow to cool.
LOADING FOOD INTO SMOKER
- Pre-heat smoker for 30 to 45 minutes at desired cooking temperature before loading food.
- DO NOT cover racks with aluminum foil, as this will not allow heat to circulate properly.
- Do not overload the smoker with food. Extra-large amounts of food may trap heat, extend cooking time, and cause uneven cooking. Leave space between food on racks and smoker sides to ensure proper heat circulation. If utilizing cooking pans, place pans on center of the rack to ensure even cooking.
- Do not open the smoker door unless necessary. Opening the smoker door causes heat to escape, may extend cooking time, and may cause wood chips to flare up. Closing the door will re-stabilize the temperature and stop flare up.
- There will be a lot of smoke produced when using wood chips. Smoke will escape through seams and turn the inside of the smoker black. This is normal. To minimize smoke loss around the door, the door latch can be adjusted to further tighten the door seal against the body.
- To adjust the door latch, loosen the hex nut on the door latch. Turn the hook clockwise to tighten as shown. Secure the hex nut firmly against the door latch (see diagram).
- Check the grease tray often during cooking. Empty the grease tray before it gets full. The grease tray may need to be emptied periodically during cooking.

WATER BOWL
- Wait until the smoker reaches the desired temperature.
- Fill the water bowl to the fill line with water or liquids like apple or pineapple juice.
- You may also add slices of fruit, onions, or fresh dried herbs into the water to blend different subtle flavors into your smoked food.
Tip: For chicken or other foods high in moisture, little or no liquid is needed.
CLEANING AND STORAGE
ALWAYS MAKE SURE SMOKER IS COOL TO THE TOUCH BEFORE CLEANING AND STORING.
- Be sure to cleanthe smoker after each use. This will extend the life of your smoker and prevent mold and mildew.
- For rack supports, racks, water bowl, and drip pan,n use a mild dish detergent. Rinse and dry thoroughly.
- For the wood chip tray and wood chip loader, clean frequently to remove ash buildup, residue, a nd dust.
- Dispose of cold ashes by placing them in aluminum foil, soaking with water, and discardingthe a non-combustible container.
- For the interior, glass in the door (if featured), and the exterior of the smoker, simply wipe down with a damp cloth. Do not use a cleaning agent. Make sure to dry thoroughly.
- After cleaning, store the mower in a covered and dry area.
- Check your smoker periodically to avoid possible rust and corrosion due to moisture buildup.
- Watch a video wwith step-by-stepinstructions on how to clean your smoker at www.youtube.com/Masterbuilt Electric Smokehouse: Cleaning and Storage.
Troubleshooting


Wood Chips Smoking Guide

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Masterbuilt MB20070421 Digital Electric Smoker- FAQs
How do I use the Masterbuilt electric smoker for the first time?
Before first use, season the smoker by running it empty at a high temperature for about 3 hours with wood chips added for the last 45 minutes. This removes factory residue and prepares the interior for cooking.
Do I need to preheat my Masterbuilt electric smoker?
Yes. Preheat the smoker with the door closed for 30–45 minutes until it reaches the desired temperature.
How do I set the temperature on a Masterbuilt digital smoker?
Use the digital control panel to select your cooking temperature, typically between 180°F and 275°F, depending on the food.
What temperature should I set my Masterbuilt smoker at?
Most meats are smoked at 225°F. Higher temperatures like 250–275°F can be used for faster cooking.
Can I use beer or juice instead of water in the water pan?
Yes, you may add beer, apple juice, or other liquids for aroma, but it will not greatly change the flavor of the meat.
Where do wood chips go in a Masterbuilt electric smoker?
Wood chips are placed in the wood chip tray or loader located on the side or bottom of the smoker.
Do I need to soak wood chips before using them?
No. Soaking wood chips is not necessary and does not improve smoke quality in electric smokers.
Can I use wood pellets or chunks in the smoker?
Masterbuilt electric smokers are designed for wood chips only. Pellets and chunks are not recommended unless specified by the model.
