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Does Cold Affect the Level Gauge on a Propane Tank?
Propane is like most other types of materials in that it is affected by cold temperatures. The propane gas contracts when the temperature declines. That reduced level of gas in the tank is reflected by the gauge which reflects the tank level. Often, this occurs whenever a homeowner checks the gauge in cold conditions and sees the amount of the tank level before and after delivery. Depending upon the weather, the level on the tank may not rise as much as anticipated.

Propane Tank Level Gauge
The gauge on the propane tank would show what portion of the gas tank is still full. Tanks are normally not filled over 80% full because this will 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 roughly 400 gallons of propane in the tank. This is around the amount which can be stored.

Normal Temperatures
The propane industry operates the popular web site Propane 101, that considers the propane reference point to be an exterior temperature of 60 degrees. Like 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 approximately 250 gallons of propane. If the temperature that same day is much lower than 60 degrees, the gauge will read lower. Also, if the temperature is much higher than 60 degrees, the gauge would actually read higher because the gas expanded.

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

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

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