Garage heat

The kerosene torpedo heaters work good when new or if you know how to repair them. I used them for many years without a ceiling in my garage. They also make a propane torpedo heater. I used 2 kerosene heaters in my garage 28x28 12 foot ceiling a 150,000 and a 50,000. I'd keep the small on on and cycle the large on as needed. Worked great.