Sterling GG gas heaters are an excellent option for heating garages, greenhouses, sheds, etc. Each Sterling GG heater includes: tubular heat exchanger, electronic ignition, power exhaust system, advanced diagnostic system for dependable worry-free operation, lots of safety features, high power fan to provide even heat distribution, rust-resistant aluminized steel exchanger, and a baked-on enamel finish made to protect them from harsh environments. Designed for propane or natural gas. Some...

- Replaces Sterling TF100 and SF100 heaters - The Sterling XF series gas unit heaters replace the TF and SF series heaters and combine them into one unit that can be vented as standard open combustion (Exhaust pipe only) or separated combustion (Using both an exhaust and intake pipe). They are a great heating option for large greenhouses, warehouses, commercial structures, etc. Sterling XF heaters feature: tubular heat exchanger, power exhaust system, electronic ignition, advanced diagnostic...

Sealed Combustion & No Electricity Required!Williams direct vent wall heater draws outside air to the sealed combustion chamber and vents exhaust gases directly outside. This feature is highly recommended if you grow orchids. No electricity required, so heater will continue to operate normally even during an electrical power outage. Great heating option for greenhouses, garages, rooms in homes, and work shops.Williams Direct-Vent heaters are designed for quiet operation. Convenient, Piezo...

Need help sizing a heater for your greenhouse? Use our Greenhouse Heater Size Calculator One of the most common problems when heating with a 240 volt electric heater is finding one that can be controlled with an external thermostat at a resonable price. Look no further. This kit includes a rugged and reliable 19,107 BTU heater and everything you need to automate it with a separate control of your choice. Works great for heating small to medium greenhouses and keeping large greenhouses above...