Greenhouse Unit Heaters Redefined
The revolutionary tubular heat exchanger inside the Lennox LF-24 series of greenhouse heaters ensures you years of performance and high efficiency. Combustion is precise because of special "in-shot" burners and fan assisted exhaust. Equipped with a TrueLeaf Combustion Air Separator, it's bullet-proof.
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Finned Heat Pipe

I-Fin™ and CopperAluminum systems

Use this product for
—Bench Top Heating
—Under Bench Heating
—Floor Heating
• Perimeter/Top Heating
—Bed Heating
• Gutter Line Heating/
• Snow Melting
• General Air Heating

We have developed our line of I – Fin products specifically for application in greenhouses.

This is not a modified product from the general heating industry. Unfortunately, too many products like that are specified and installed in institutional greenhouses in research and teaching environments. Because of the aggressive environment of the greenhouse, those products tend to fail quickly. Not the case with I-fin, as we have designed it specifically for the application. This is what the research and teaching greenhouse community has been requesting for years.

I-Fin Performance Specifications (BTU/Hr/Ft)
  Tier @180°F AWT 200°F AWT
1 Tier 980 1220
2 Tier 1730 2150
3 Tier 2340 2920
AWT — Average Water Temperature
Ratings @65°F Entering Air Temperature

I-Fin Perimeter Finned Heat Pipe System

  • Attractive, and stays that way. It is completely non-ferrous— won’t rust, no paint is ever necessary.
  • Serviceable— protective cover is secure, but easy to remove.
  • Easy to install— special racking system for ease of mounting appropriate number of finned heat-pipe capacity.
  • High performance— open convecting design provides excellent greenhouse heating capacity.
  • Designed specifically for educational research and retail greenhouse environments.
  • Easy to specify for optimum performance and appearance.

Great in retail applications too!