Therma Grow greenhouse heaters, manufactured by L.B. White, offer advanced heating capability while conforming to strict emissions guidelines. The superior clean-burning technology produces up to 20% better fuel efficiency than other models and works easily with either propane or natural gas. All Plus models have two stage temperature, heating, and circulation control. This option offers the most versatility to your operation because it can be used efficiently during brief cold snaps or extended snowy winters.

Therma Grow 120 Plus models can run at either 65,000 or 120,000 BTU/hr. with a CFM rating of 1,100 to heat your greenhouse exactly how your grow requires. . When paired with Therma Grow’s standard warranty, high efficiency, and low repair costs, it is a very effective heating option.

L.B. White carries an unparalleled 10-year warranty on the heat case and chamber. Internal components are fully protected and enclosed, ensuring low maintenance and repair costs for years. The units can be mounted to either the inside or outside of the greenhouse, optimizing your heating options and growing space.

Therma Grow Features:

  • 115 volts electric
  • Starting/continuous amps: 11.8/4.5
  • Can be ordered to work with propane or natural gas
  • High-efficiency, reduces energy costs
  • Quick response time and dependable ignition
  • Meets OSHA greenhouse requirements
  • 10 year manufacturer’s warranty on heat chamber and case
Weight 116 lbs
Dimensions 30.75 × 21 × 28.25 in