30,000 - 80,000 Convection heater with 20 lb tank?

Question

Has anyone used a 30,000 - 80,000 convection heater with a 20 lb tank? The manual says it will run for a very short time on low with a 20 lb tank but the front of the box says it will run for 8.5+ hours on a 20 lb tank. The manual also said a 20 lb tank would only work for mildly cold weather and I would need a 100 lb tank for days colder than 40 degress and two 100 lb tanks for days colder than 20 degrees. Does this make any sense to anyone? I want to use it to heat my garage which is less than 500 sq ft so the low setting should work fine. I wanted to get some opinions from those who have used them before I set it up or bring it back.

Thanks for your help

Answer 1

All they are saying is the more gas you use, the bigger tank you will need. The instruction sheet is printed by non English speaking people. Just use it to stay warm and it will be self evident if the tank is big enough.