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A 20 pound propane tank holds 4.1 gallons of LP which equates to about 0.016 cubic meters. If your heater burns 3 m3 per hour the tank will last about 19 seconds. If you meant .0003 then it will last 51.73 hours.
75 weeks - under a year and a half 15,000 / 200 = 150 / 2 = 75
Most last about 12-14 years.
About 2 foot 6
They should be replaces every 5 years to ensure energy savings.
In the US, 1 ton = 1 short ton = 2000 lb→ 15000 lb =15000 lb ÷ 2000 lb/t = 7.5 t In The UK, 1 ton = 1 long ton = 2240 lb→ 15000 lb = 15000 lb ÷ 2240 lb/t ≈ 6.7 t
If you are talking about years, about 3-4 years. If you are talking about non-stop, about all night.
Its About 21 Hours Flight almost 15000 Miles
15,000/305=49.1 hours.
Some heaters have been known to last over 10 years depending on how well you take care of it.
Generally, a good propane heater is large and has a thick metal surrounding. One that is made of cheap, thin metal is probably not a good heater because it will not last long.
Mine is 18 years old, still works