About

Established in 1980 as BioTherm Engineering, we created the first commercialized root zone heating (RZH) systems for commercial horticulture. BioTherm’s legacy product, all-aluminum SunFin®, was developed in the 1950s and is considered the gold standard (performance rated by AHRI) for institutional greenhouse heating. Our BioTherm MicroClimate™ system was introduced in 1980, followed by a constant string of durable heating solutions like StarFin™, DuoFin™, MegaTube™, and GreenPex™.

We  continued to grow and innovate new solutions for several decades. In 2000, we expanded the company with TrueLeaf Technologies to better address the systems integration that the company does worldwide. In 2017 we merged the operations of TrueLeaf into BioTherm and continue to innovate new technologies to help commerical plant growers. Our team have been published in horticultural reference books and textbooks and several members led the process of developing heating guidelines for the National Greenhouse Manufacturers Association. Our deep knowledge comes from many years of experience in this very specialized and demanding field.

Our innovative and proven products will deliver years of service, but it is our team of professionals with decades of application experience that makes doing business with BioTherm a world-class experience. We deliver innovative solutions to meet the needs of our clients while contributing to their financial and environmental goals.  We provide high quality products with excellent sales and service. 

Industries

Greenhouse

  • Nexus Greenhouse Systems
  • Rough Brothers
  • Lucas Greenhouses
  •  
  • Nourse Farms
  • Humboldt Kine Farms
  • Beth’s Ornamentals
  • Best Taste Tomatoes
  • The Proving Grounds
  • AgriStarts
  • Manfred and Son’s
  • Bay City Flowers
  • Bell Nursery USA
  • Wonderful Citrus
  • Nor’Eastern Farms
  • McLellan Botanicals
  • Forest House
  • Glenstone Foundation
  • Longwood Gardens
  •  
  • Retail

  • The Growbiz

Institutional

  • BASF
  • Bayer Crop Science
  • Beta Seed
  • Clarke University
  • Clemson University
  • Cornell University
  • D Danforth Plant Science Center
  • Forest House
  • Glenstone Foundation
  • Longwood Gardens
  • Ohio State University
  • Monsanto
  • Pennsylvania State University
  • Purdue University
  • Rutgers University
  • San Francisco Conservatory
  • Syngenta Seed
  • United States Botanic Garden
  • United States National Arboretum
  • University of Alaska, Fairbanks
  • University of Florida
  • University of Wisconsin
  • Welby Gardens

Jim Reardon

CEO

707-238-5850

Mike Muchow

Vice President & Project Director

707-238-5858

Thad Humphrey, P.E.

Engineering Director

707-238-5852

Joel Rechin

Key Accounts Manager

707-238-5857

Bill Essert

Director of Business Development

707-238-5846

Dan Kuipers

Regional Sales Manager and Incentives Specialist

616-396-6101

Julio Reyes

Warehouse Manager

707-238-5853

Dan Whittemore

Designer

707-238-5847

Shawn Ransford

CTO

707-238-5847