Stack Temperature Thermometer with Mount - 6" Dial
Stack Temperature Thermometer with Mount - 6" Dial SL-STKTMP6 video

Stack Temperature Thermometer, 6″ Dial

(3 customer reviews)



  • 6″ Dial
  • Mounting bracket for the dial
    (Predrilled mounting holes. Allows for an easy side mount or back mount.)
  • 17′ lead
  • Rugged stainless steel probe
  • 1/2″ NPT probe fitting
  • Instruction Guide


Benefits of Using a Stack Thermometer

  1. Fuel efficiency
  2. Training tool – Teach new folks to run the evaporator
  3. Assessment of wood quality
  4. More consistent boiling / draw-offs

Variables That Affect Stack Temperature

  1. Placement of the Stack Thermometer Probe in the stack
    (Install the probe in the first section of round pipe OR higher. The higher the installation, the lower the temp.)
  2. Length of the evaporator
    (Longer evaporators tend to have lower stack temperatures.)
  3. Flat Pan vs Flue Pan
  4. Quantity and quality of firewood
  5. Quality of the insulation in the arch

Stack Temperature Thermometer Instruction Sheet Image

Download Stack Temp Thermometer Instructions

Additional information


Stack Temperature

Thread Size

Dial Size


3 reviews for Stack Temperature Thermometer, 6″ Dial


    Make sure the pointer is on the right side of the stop before you drill a hole into your stack. I did call and sent a picture but have not heard back.

    • Angela

      Hi Todd, Thanks for reaching out. I’m sorry we never received the picture you are referencing. At the time of this writing, our lead technician has called you back and your replacement dial is already on its way to you. We do apologize for any confusion. You are very important to us and we absolutely stand behind our products. Please let us know if there is anything else you need. Our support is available at 920-202-4500.

  2. Cheng

    This is just a great product! You simply cannot buy a 6″ dial thermometer in the appropriate range for a wood fired maple evaporator with such a long remote mounting capability. The gauge comes with a mounting plate, is large and easy to read from across the room and can be located exactly where you want it. Knowing the stack temp is key to running a wood fired evaporator by taking all the guesswork out of when to fire; the temp really tells the story of what is going on in the firebox. Smokey Lake has hit all the right points on this thermometer!

  3. Michael White

    I ordered and receive the 6″ Stack Thermometer last spring and never looked at it until I hung it up before sugaring this year. I should have paid attention because my buddy pointed out that the needle was on the wrong side of the pin. I sent a quick email and shortly I received a prepaid label to send it back for replacement. Minutes later I received a call from Jimmy giving me guidance on how I could get the needle on the correct side. Using Jimmy’s insight my thermometer was fixed within seconds! I have now used this for two boils and it has truly helped us to know when we need to add wood, and also when we have added to much wood. I now know that there is a sweet spot and if I get my fire too hot it is sending all that heat right out of the stack. Thank you Angela and Jimmy for your outstanding support each and every time I have reached out to you!

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