Frank the BedBug Chaser and I want you to look at this chart for yourself http://www.bedbugchaser.com/BedBug_Chaser_100... and see why exterminators using our equipment can heat your house faster than those using other brands. This is why exterminators using our Avtron heaters can charge less money per sq ft than those using Brand X time is money and we save you time! Without burning your house down!!