How long does it take to warm a 7000 gallon above ground pool?

Warming a 7,000-gallon above ground pool can take anywhere from a few hours to a couple of days, depending on several factors such as the type of heater used, the starting water temperature, and the ambient air temperature. A gas heater typically heats water faster than an electric heater. Additionally, using a solar cover can help retain heat and speed up the warming process. On average, expect to raise the temperature by about 1-3 degrees Fahrenheit per hour with a standard pool heater.