Finned Heat Pipe
Hot Water Greenhouse Heating Systems

p14stealthfin p14duofin p14starfin
In the field for over 11 years! All of these finned heat-pipe products have been developed with a few simple concepts in mind:

  • Quick installation by unskilled labor – with no leaks.
  • Low water volume and high heat transfer for quick response.
  • No maintenance exterior – no painting, ever.

Constructed of super-conductive aluminum alloy, these products provide low-mass, high-output heating for under-bench, under-gutter, cut-flower, and perimeter applications. All the products share a common fitting system and accessories. Each one excels at specific jobs as you will see.

Low Volume/Low Mass
p14diagramLow-mass, low-water volume greenhouse heating systems are essential for today’s precisely controlled greenhouses. Our finned heat-pipes give you systems with high reaction/response to greenhouse temperature changes. Since only a small amount of water needs to be heated, setpoints are easily maintained, and the temperature lead/lag associated with high mass systems is eliminated. Compared to standard hot water pipe systems, these systems can have as much as 80% less water volume which means quick startups and less temperature overshoot, and much better energy efficiency.

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Water Volume & Weight Comparison for one Acre Greenhouse

In addition to aluminum’s excellent heat transfer capabilities, it holds up to the harsh elements of the greenhouse environment. These pipes withstand all commonly used fertilizers and typical greenhouse chemicals. They will not rust or corrode. Also, a side benefit of lower water volume is that you need substantially less water treatment than with conventional systems.

p14duofinDuoFin for supreme heating eveness
DuoFin provides incredibly even heating across the width of your greenhouse growing areas. Its unique tapered fin design delivers a combination of convective and radiant heating quietly and efficiently. Having only two fins means that more loops are needed to meet your heat load than with sister product, StarFin. But, it also means you never have to clean debris from the fins. Also, the large inside diameter means less pumping energy is required to provide greater evenness than any competitive system.

p14connectors2DuoFin Specifications:

  • Lengths Available: 12′ standard – custom lengths available
  • Aluminum Type: #6063-T5 extra hard alloy
  • Shipping Weight: 8.04 lbs. per 12 ft. length
  • Applications: Under-bench, perimeter, cut-flower rows, gutter lines
  • Typical Loops Required per 6′ wide bench: 2
  • Hose hookup: 3/4″
  • Anodization: Available at incremental extra cost
  • Inside diameter: 1″
  • Rated BTUH output 175 @65° air and 180° avg. water temperature

DuoFin provides gentle heat from below the crop

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StarFin for high heat output

p14starfinStarFin’s tapered six fin design has 3 times the surface area of two-fin designs or 51mm thin-wall steel tubing. This increased surface area produces StarFin’s high heat output, allowing lower water temperatures to be used and producing a soft, gentle greenhouse heat.

StarFin provides high heat output and minimizes pipes
High heat output cuts installation time and labor because fewer pipes are required to meet the heat load.

Also, less pipes mean less light-stopping shadowing in overhead greenhouse heating applications. Also, our large I.D. allows long loops with generous flow rates, resulting in greater evenness.

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p15starfinphotoStarFin Specifications:

  • Lengths Available: 12′ standard – custom lengths available
  • Aluminum Type: #6061-T6 extra hard alloy
  • Shipping Weight: 12.72 lbs. per 12 ft. length
  • Applications: Under-bench, perimeter, cut-flower rows, overhead gutter lines
  • Typical Loops Required per 6′ wide bench: 1
  • Hose hookup: 3/4″
  • Anodization: Available at incremental extra cost
  • Inside diameter: 1″
  • Rated BTUH output 295 @65° air & 180° avg. water temperature

StealthFin directed greenhouse heating for plant canopy

p14stealthfinStealthFin is a unique development and has been created specifically for greenhouse growers who desire to provide a balance of top and bottom heat delivery. Many growers find that, while heating from the bottom increases growth, adding a bit of

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directed energy above the crop can reduce botrytis-causing moisture and can help produce a hardier rooted cutting or mature plant.

StealthFin’s design cascades radiant heating energy down on the tops of the plants. It is usually installed 2-3 feet above the crop as an augmentation to DuoFin or StarFin located beneath the crop. StealthFin is supported by a longitudinal rib integrated down the length of the pipe. Simply punch or drill a hole at the hanging point and insert support chain or wire hook every 12′ or so.

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Stealth-Fin Specifications:

  • Lengths Available: 12′ standard – custom lengths available
  • Aluminum Type: #6061-T6 extra hard alloy
  • Shipping Weight: 8.508 lbs. per 12 ft. length
  • Applications: Over benches
  • Typical Loops Required per 6′ wide bench: 1 Loop overhead
  • Hose hookup: 3/4″
  • Anodization: Available at incremental extra cost
  • Inside diameter: 1″
  • Rated BTUH output 172 @65° air and 180° avg. water temperature