DYNA-GLO WORKHORSE SERIES 150000 BTU PORTABLE PROPANE GAS FIRED HEATERS ARE A SUPERIOR SOLUTION FOR HEATING NEEDS UP TO 3500 SQUARE FEET. FEATURES AN INCLUDED REGULATOR AND HOSE ASSEMBLY AND CONTINUOUS ELECTRONIC IGNITION WHICH ALLOW FOR SWIFT INSTALLATION AND START-UP. CONTINUOUSLY VARIABLE HEAT SETTING FROM 120000 - 150000 BTUS AND ADJUSTABLE HEAT ANGLES ENSURE COMPLETE CONTROL OF THERMAL COMFORT. LOW PRESSURE SYSTEM ALLOWS FOR CONSISTENT BTU'S IN THE COLDEST OF TEMPERATURES. RUN TIME IN HOURS VARIES PER TANK SIZE AND HEAT SETTING 100 LB. TANK CAN PROVIDE ABOUT 7.5 - 14 HOURS OF OPERATION (LP TANK SOLD SEPARATELY).NOT FOR USE IN RESIDENTIAL LIVING AREAS OR IN INADEQUATELY VENTILATED AREAS. PROPER VENTILATION REQUIRED DURING OPERATION.