DEWALT F332000 Cordless Propane Heater - Tool Only - Portable Heating Solution for Construction Sites, Garages & Outdoor Work

I have been looking for a portable propane heater. I thought about other brands but saw this branded by Dewalt and thought I would give it a try. I cannot compare it to other propane heaters since this my first. Unboxing and set up was easy. No parts to put together other than installing the two 1lb propane tanks and Dewalt battery.Like other reviews, it took me a few minutes to realize the ignitor requires a AAA battery (not provided - once that was installed, it started up). The instructions are not that great. This does require a 20v Dewalt battery to run the fan and light (not provided). The doors for the propane bottles and ignitor/usb ports are a little flimsy. It requires two 1lb propane bottles (not provided).I live in a block house in FL. The temps dropped to 20 degrees at night this week. I decided to test this heater. I placed the heater in a 10 x 10 room and opened the window to get the temp down. I placed the heater in the room with 2 full 1lb bottles and two carbon monoxide detectors. I closed the window, interior door, turned the heater on low, turned on the fan and left the room (although the instructions advise do not leave the unit unattended). The room heated up within 10 minutes to about 73 degrees. Overall, the two 1lb propane bottles lasted about 6 hours on low, the CO detectors did not go off in the enclosed space, and 4 amp 20v battery for the fan still has 3 out of 3 charge lights. The fan does have a noticeable hum while running.I ran the heater until the bottles were empty. I installed two new bottles to try it outside (don't forget to turn off the temp or propane will start once the bottle is installed). Moving it while it is running will shut off the heater, but the fan will keep blowing unless you turn it off. Outside, if there is a slight breeze the pilot will shut off. It puts out a lot of heat, but you needed to be close to the heater to get the benefits. The fan does not really help if there is a breeze. I needed to put the heater up wind, so the breeze pushed the heat to me. Not sure if it would have stayed on in wind.Next tried it in my shop 12 X 15 no insulation. It heated the shop within 20 mins. No CO alarms went off. I ran it on high and it got really warm. However, the 2 bottles only lasted about an hour and a half.I have purchased the 20lb bottle hose attachment but have not got it yet. I will try it and update the review. I also purchased the 1lb bottle refill adapter. Easy to use and a money saver compared to purchasing new bottles when they run out.Overall, I do like the heater for the short time I've owned it. The fan is a great option for this type of heater. I wish the fan had more than one speed and was a little quieter. The tip over feature works. The front grill will get hot with use, so be careful. I like the portability and it does not weigh a lot. Do follow the instructions and hold the valve down for 30 seconds when lighting the pilot. I light is bright and a nice option. I did not use the USB options but I'm sure they work. I thought about hooking up an USB fan in front of the heater but didn't. It feels well-built and solid although the doors could be a little thicker. It can be hung on a wall if desired. This heater does cost more than most propane heaters but I'm happy with it for the short time I have owned it.