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Does Cold Really Affect the Level Gauge on a Propane Tank?
Propane is like the majority of other kinds of materials in that it is affected by cold temperatures. The propane gas contracts when the temperature does down. That reduced level of gas in the tank is reflected by the gauge which reflects the tank level. Often, this comes into play whenever a homeowner checks the gauge in cold climate and sees the amount of the tank level before and after delivery. Depending upon the weather conditions, the tank level may not go up as much as expected.

Propane Tank Level Gauge
The gauge on the propane tank will show what portion of the gas tank is still full. Tanks are typically not filled over 80% full as this would allow for the gas to expand on hotter days. Like 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 roughly how much can 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 baseline or reference point. For instance, if the gauge reads 50 percent of capacity on a day when the temperature is near 60 degrees, then a 500 gallon tank would have about 250 gallons of propane. If the temperature that day is much lower than 60 degrees, the gauge would read lower. Also, if the temperature is much higher than 60 degrees, the gauge will actually read higher because the gas expanded.

Effect of Expansion and Contraction
The energy contained or amount of energy contained within a tank will not change as the gas either contracts or expands, based on the propane industry website. 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 will receive 424 lbs. of propane. If the homeowner has a 1000 gallon propane tank, they could expect the gauge to go up by 10% with the delivery of 100 gallons. These numbers will be accurate if the temperatures were near 60 degrees at the time of delivery. If the delivery took place during colder weather conditions, these chillier temperatures will result in a smaller increase reading on the propane gauge.

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