Corsair Evaporator with Flat Pan
360 Corsair Evaporator with Flat Pan Corsair with Optional Forced Air Kit It's easy to add a blower to the Corsair Arch 2x4 Flat Pan with Valve and Optional Thermometer Stainless Steel Ball Valve and 3" Dial Thermometer on a Premium Flat Pan Galvanized Smoke Stack Pipe, 5-ft length, various diameters Three Quarter Inch Ball Valve

2′ × 4′ Corsair Evaporator w/Flat Pan

From: $2,320.24

NOTICE: Due to extreme popularity/demand, ALL Corsair models are experiencing extending lead times at this time. Mid-summer orders are on track for late fall or early winter delivery. The best/quickest way to get your order in the system is to place the order here online. Thank you for your patience. We guarantee this product is worth the wait!

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*Please contact us for international shipping quotes.

Discounts for Local PickupDISCOUNTS AVAILABLE for local pick up.
See our discounts list or contact us for details.

This evaporator is rated for 10 – 75 taps.
Estimated evaporation rate is 11 – 14+ gallons per hour.
It will take 10 gallons of sap to fill the pan 2″ deep.


Premium Stainless Steel Flat Pan

  • 22 gauge, mirror finish stainless steel
  • TIG welded (NEVER Soldered)
  • Limited lifetime guarantee against leaks
  • Full length handles
  • One 3/4″ stainless steel, draw-off valve
  • One 3″ dial syrup thermometer
  • Instruction guide for using a Flat Evaporator Pan
  • Right-side draw-off unless requested otherwise

Corsair Arch

  • Strong, reliable steel frame
  • Large air-tight loading door
  • Large combustion chamber
  • Both natural draft and forced draft options available
    • Natural Draft option includes a perforated knock out and mounting studs so you can easily upgrade at a later date if desired
    • Forced Draft option comes with a pre-mounted Forced Air Kit and Domed Cast Iron Grates

Base Stack and Stack Pipe

  • Galvanized Steel unless upgraded to Stainless Steel (longer life expectancy)
  • The total length of the Stack Pipe is always double the length of the arch. Maximum = 12 feet.

Rope Gasket

  • Gasket for underneath pan
  • Gasket for behind the pan


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    Four Reasons the Door Design is Critical

    1Competitor doors/fireboxes are often much too small. In contrast, the 16″ x 16″ Corsair doorway makes it easier to load wood, and generate more heat.

    2If you ever want to upgrade to Forced Draft — either now or in the future — you need an airtight door. With Corsair, you’re all set.

    Regardless whether you have Forced Draft or Natural Draft, an airtight door increases efficiency. A leaky door works against you by allowing cold air to enter the firebox and cool your pans.

    4Our competitors’ cast iron door fronts have been cracking since the 1800s. The Smoky Lake Corsair door will not. We guarantee it.

    Compare the Durability

    Corsair Arch

    This revolutionary evaporator design is fully convertible from conventional draft to forced draft in an instant. The airtight front gives you a critical advantage in efficiency and performance whether you’re running the forced air kit or if you choose to keep things simple with natural aspiration. 

    The large loading door nicely compliments the large combustion chamber. This air-tight door will help prevent cold air from being pulled along the bottom of pan, negatively effecting evaporation rate and efficiency. 

    The Corsair arch is fully steel framed. The entire perimeter is built as strong as possible, giving you confidence when filling the pans above it with your precious liquid and igniting an intense fire inside it. Additionally, the arch fits the geometry of whatever pan set you plan to use on it, forcing the pan to take full advantage of the heat created within. 

    Insulating the Arch

    See our Brick and Insulation Kit page for details regarding the sizes/quantities of bricks required for each size evaporator.

    Please note: The Corsair air-tight firebox door will come pre-insulated for you. The ceramic blanket, firebrick and mortar which required to insulate/protect the remainder of the arch is sold separately.

    Forced Draft Kit Option

    Forced Draft Kit includes domed gratesBENEFITS:

    • Much higher evaporation rate compared to natural draft.
    • Easier to burn larger/unseasoned wood. This means you won’t have to cut your firewood as fine and you can burn wood that is less perfect.
    • Increased agility. You will be able to shut down your evaporator much faster because it allows firewood to burn quicker and more completely.


    The forced draft option includes upgraded domed cast iron grates and an electric blower. If ordered at this time, the blower will come pre-mounted to the arch. Otherwise, if you order the arch as conventional draft, the back of the Corsair firebox will include a perforated knock out and mounting studs to accommodate a forced air kit in the future. If the time comes when you need more performance, just remove the knock out, mount the blower and replace the steel grates with the kit’s new perforated, domed cast iron grates.

    Additional information

    Pan Size

    2' x 4'


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