How large a space will it heat?

It is rated for spaces up to about 260 sq ft, with 45000 BTU and roughly 450 m³/h of airflow. In open or poorly insulated spaces it warms the area near the outlet fastest.

Can I use diesel instead of kerosene?

Yes. It is compatible with both kerosene and diesel, and dual fuel filters help keep combustion clean. Kerosene generally burns cleaner and smells less.

How long does a full tank last?

The 19-gallon tank supports up to about 56 hours at a burn rate of 0.34 gal per hour. Real runtime depends on the heat setting and conditions.

Does it need ventilation?

Yes. It is a combustion heater, so run it only in ventilated spaces such as a garage with a door or window cracked open. Do not use it in sealed living areas.

The heater and a user manual. Fuel is not included.

How does it compare with a smaller torpedo heater?

It delivers more heat and a much larger tank than 20,000–30,000 BTU units, so it suits bigger, colder spaces. The trade-off is more noise, weight and fuel use.