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Does Cold Temperature Truly Affect a Propane Tank Level Gauge?
Propane is similar to most other kinds of materials in that it is affected by cold temperatures. The propane gas contracts as the temperature does down. That reduced level of gas in the tank is reflected by the gauge that reflects the tank level. Often, this happens whenever a homeowner checks the gauge during cold climate and sees the amount of the tank level before and after delivery. Depending upon the climate, the tank level might not rise as much as anticipated.

Propane Tank Level Gauge
The gauge on the propane tank will show what percentage of the gas tank is still full. Tanks are typically not filled over 80% full because this would allow for the gas to expand during warmer temperatures. For example, a 500 gallon tank, at a reading of 80 percent at normal temperatures reflects about 400 gallons of propane in the tank. This is around how much could be stored.

Normal Temperatures
The web site Propane 101, that is managed by the propane industry, considers an exterior temperature of 60 degrees to be the reference or baseline point. Like for example, if the gauge reads 50% of capacity on a day when the temperature is close to 60 degrees, then a 500 gallon tank would have approximately 250 gallons of propane. If the temperature that same day is much lower than 60 degrees, the gauge would read lower. Also, if the temperature is a lot higher than 60 degrees, the gauge will actually read higher because the gas expanded.

Effect of Expansion and Contraction
According to the information given by the propane industry web site, the amount of energy contained within the tank does not actually change when the gas expands or contracts. The amount of propane itself has not changed, but just the density of the gas has changed.

Cold-Weather Delivery
If a homeowner orders 100 gallons of propane to be delivered, they would be given 424 lbs. of propane. If the homeowner has a 1000 gallon propane tank, they can expect the gauge to go up by 10% with the delivery of 100 gallons. These numbers would be correct if the temperatures were close to 60 degrees at the time of delivery. If the delivery took place during colder weather, these chillier temperatures will cause a smaller increase reading on the propane gauge.

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