BioTherm is proud to announce our new OEM relationship with Sterling to bring you a great option for your unit heater investment!
Available in multiple sizes, these heaters are designed to fit facilities of any size, are competitively priced, and offer greater efficiency than other models on the market.
Call 1-800-GET-HEAT to order!

We offer a unit heater model for every size facility, designed to match the same models currently available on the market while providing enhanced efficiency and competitive pricing.
BioTherm is now offering the highest-efficiency unit heaters on the market!

Matrix Series – HIGHEST EFFICIENCY
• +93% Efficiency at Full Input• 8 Sizes 50 to 400 MBH
• Commercially Certified (All Sizes)
• Separated or Standard Combustion All-In-One Units
• Tri-Metal Heat Exchanger for Improved Thermal Heat Transfer
• Natural or Propane (LP) Gas
• PVC/CPVC Vent Compatible
• 18-Gauge Zinc Aluminum Magnesium (ZM) Coated Steel Corrosion-Resistant Cabinet
• Direct Spark Ignition System
• 321 Stainless Steel Flue Collector
• 115/1/60 Supply Voltage
• Condensate Float Switch and Trap Standard
• 10-Year Heat Exchanger, Flue Collector and Burner Warranty

AF/AB Series
• ZAM Coated Steel Corrosion-Resistant Cabinet
• Stainless Steel Tubular Heat Exchangers
• Stainless Steel Burners
• Separated or Standard Combustion All-in-One Units
• 83% Thermal Efficiency
• Power Vented
• Propeller (AF) and Blower (AB)
• Optional Gas Conversion Kit (NG or LP)
• Direct Spark Ignition System
• Redundant Single Stage Gas Valve
• Rear Burner Access for Ease of Service
• Individually Adjustable and Removable Horizontal Louvers
• 10-Year Heat Exchanger, Flue Collector and Burner
Warranty
• Optional Poly Tube Adaptor (Poly Tube by Others)

AG Series
• ZAM Coated Steel Corrosion-Resistant Cabinet
• Stainless Steel Tubular Heat Exchangers
• Stainless Steel Burner Boxes
• +82% Thermal Efficiency
• Separated or Standard Combustion All-in-One Units
• Single Orifice Burner System
• Direct Spark Ignition
• Power Vented
• OSHA Fan Guard
• Terminal Strip Low Voltage Wiring
• LP Gas Conversion Kit Included
• Easy Access Control Panel
• 10-Year Heat Exchanger, Flue Collector and Burner
Warranty
Sterling unit heaters are the most efficient on the market, delivering powerful, cost-effective heating for greenhouses of all sizes
When paired with a root zone heating system, Sterling’s forced air provides complete climate control by maintaining ambient warmth while optimizing root zone temperatures
Designed for durability and reliability, Sterling unit heaters are ideal for greenhouse environments, offering consistent performance in even the most demanding conditions
Select from a wide range of high-quality coffee machines tailored to your office size and needs.
A lot of builds. A lot of years. A lot of BioTherm. The support that we have had through the years has been incredible and dynamic. They treat you like the most important customer they’ve ever had. They treat us like family.balance of warmth and efficiency.
It’s been great growing both of our companies together for the last 40+ years. I’ve appreciated working with BioTherm the last 40+ years. They’ve always been able to correct issues that we’ve had and have never given up
As a horticulturist, maintaining the right climate for my plants is crucial. This heating system provides the perfect balance of warmth and efficiency.
The Plantcentric is the total package for greenhouse control. Most companies throwaround the word “controlled environment agriculture” but they only really work whenconditions outside are favorable.
With over 44 years of unparalleled experience, BioTherm has been at the forefront of revolutionizing greenhouse climate technologies. Our mission is to empower growers to craft their own ideal weather, fostering the perfect ecosystem for plants to not only grow but thrive.
With over 44 years of unparalleled experience, BioTherm has been at the forefront of revolutionizing greenhouse climate technology. Our mission is to empower growers to craft their own ideal weather, fostering the perfect ecosystem for plants to thrive.