For those without a natural gas hookup, the Mr. Heater 30,000 BTU heater is also available in a propane version ... that it was running. A big downside to this model is that it gets very hot ...

You've given your plants shelter from the winter by building a greenhouse. Now you need a greenhouse heater to take away the chill.

$129.99 at Tractor Supply 9,000 BTU Heating coverage up to 225 Sq. ft Oxygen Depletions Sensor Safety tip-over switch Tiltable design No electricity required 1-year warranty This Heat Hog ...

Gas patio heaters are fueled by propane or natural gas. Natural gas ones require a fixed gas line. Some electric heaters can be plugged into a standard electrical outlet, although most require ...