- Site Navigation +
- Home
- Products +
- About L.B. White +
- Customer Care Center +
- Contact Us
- Find A Dealer
Change Language | English 
Therma Grow™ greenhouse heaters utilize exclusive, L.B. White Plant-Safe Technology™, the only greenhouse heater certified to the stringent greenhouse emissions standards.
Therma Grow™ greenhouse heaters are advanced, clean-burning, direct fired models that offer 20% better fuel efficiency than traditional greenhouse heaters. So when comparing thermal conversion or seasonal (year-round) efficiency, the Therma Grow™ greenhouse outperforms even the most advanced competitive products and it does so for less money.
Therma Grow™ greenhouse heaters carry an unheard of 10 year warranty on the heat chamber and case, and have completely enclosed and protected components, making for years of trouble-free heating. The design combines efficiency, advanced performance, and long component life to reduce energy and maintenance costs, and help grow profits. These units can be mounted either inside or outside; giving growers flexibility and the ability to free up grow space.
L.B. White is the pioneer in direct fired heaters and with 50 years of perfecting every aspect of our design which has led to our reputation for reliability, durability and serviceability.
When the fate of your plants is at stake…you want the rising star in Greenhouse heating protecting your investment… L.B White.
Use the HEAT CALCULATOR or call our technical experts to help you select the correct size and quantity of heaters for your green houses.
Technical Support – 1-800-345-7200
Therma Grow™ Greenhouse Heater Specifications |
||||
| Model: | 120 | 120 Plus | 220 | 220 Plus |
| Btu/h Rating | 120,000 | 65,000 & 120,000† | 220,000 | 120,000 & 220,000† |
| Heater Configuration: | ||||
| Hot Surface Ignition | Yes | Yes | Yes | Yes |
| Centrifugal Blower Fan | Yes | Yes | Yes | Yes |
| Air Movement (cfm) | 1,100 | 1,100 | 1,750 | 1,750 |
| Heat / Air Circulation Switch | - | Yes† | - | Yes† |
| Inlet Gas Supply Pressure: | ||||
| Propane min./max. (in. w.c.) | 11/13.5 | 11/13.5 | 11/13.5 | 11/13.5 |
| Natural Gas min./max. (in. w.c.) | 7/11 | 7/11 | 7/11 | 7/11 |
| Fuel Consumption (max.) | ||||
| LP Gas (lbs./hr.) | 5.6/3.0 | 5.6/3.0 | 10.2/5.6 | 10.2/5.6 |
| Natural Gas (cu.ft/hr.) | 120.0/63.0 | 120.0/63.0 | 220.0/117.0 | 220.0/117.0 |
| Electrical Requirements* | 115/60/ 1 or | 115/60/1 or | ||
| Requirements | 115/60/1 | 115/60/1 | 230/60/1 | 230/60/1 |
| Starting / Continuous Amps | 11.8/4.5 | 11.8/4.5 | 17/7 or 6.7/2.6 | 17/7 or 6.7/2.6 |
| Combustion Air Requirements: | ||||
| Indoor Installation (cu. ft./min.) | 300 | 300 | 550 | 550 |
| Outdoor Installation (in2 of exit area) |
120 | 120 | 220 | 220 |
| Combustion Performance | ||||
| CO (ppm rise) |
≤ 5.0 |
≤ 5.0 | ≤ 5.0 | ≤ 5.0 |
| NO2 (ppm rise) |
≤ 0.5 |
≤ 0.5 | ≤ 0.5 | ≤ 0.5 |
| CO2 (ppm) |
≤ 4,000 |
≤ 4,000 | ≤ 4,000 | ≤ 4,000 |
| Ethylene (ppm) |
≤ .015 |
≤ .015 | ≤ .015 | ≤ .015 |
| Air Temperature Rise (°Fahrenheit): | 110 | 110 | 120 | 120 |
| Minimum Clearance (ft.): | ||||
| Top / Sides / Back | 1/1/2001 | 1/1/2001 | 1/1/2001 | 1/1/2001 |
| Blower Outlet | 6 | 6 | 6 | 6 |
| Dimensions (in.) | ||||
| Length | 30.75 | 30.75 | 35.5 | 35.5 |
| Width | 21 | 21 | 25.5 | 25.5 |
| Height | 28.25 | 28.25 | 30 | 30 |
| Steel Case Materials: | Galvanized |
White |
Galvanized | White Tri-Shield** † |
| Shipping Weight (lbs.) | 116 | 116 | 150 | 150 |
*Specify which voltage when ordering Therma Grow™ 220 units
**Tri-shield coating consists of 3 unique protective layers including: a non-corrosive hot-dipped galvanized steel, an oven-cured epoxy primer and a baked, thermosetting polyester.
†Items that pertain to the Plus Models.
Therma Grow™ greenhouse heaters utilize exclusive, L.B. White Plant-Safe Technology™, the only greenhouse heater certified to the stringent greenhouse emissions standards.
Therma Grow™ greenhouse heaters are advanced, clean-burning, direct fired models that offer 20% better fuel efficiency than traditional greenhouse heaters. So when comparing thermal conversion or seasonal (year-round) efficiency, the Therma Grow™ greenhouse outperforms even the most advanced competitive products and it does so for less money.
Therma Grow™ greenhouse heaters carry an unheard of 10 year warranty on the heat chamber and case, and have completely enclosed and protected components, making for years of trouble-free heating. The design combines efficiency, advanced performance, and long component life to reduce energy and maintenance costs, and help grow profits. These units can be mounted either inside or outside; giving growers flexibility and the ability to free up grow space.
