Hi am thinking of getting a portable gas heater, my parents had one about 50 year ago, i have been reading how long medium lasts 15kg can is between 55-60 hours, but low heat is near 230 hours, what i am trying to find are they worth it , i got really really small living room , how warm would the low heat be, any thing got be warmer than a halogen heater, if low is warm i am going to get one, any advive will help..lol