Heat pumps maintain constant pool temperatures between 80 and 90 degrees. If solar heating is out of the question, but you want a heated pool most of the day, use a heat pump. A gas heater quickly warms a pool to 90 degrees or higher. This is idea for a pool that is used once or twice a day, or only when guests come over.
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Run your pool pump 1 hour for every 10 degrees F that the outside temperature is above freezing. During the mild Florida winter, run your pool pump for about 6 hours daily. In the hottest part of the Florida summer, when it’s 80 degrees F or higher, run your pump 10 to 12 hours.
If you have a timer or automated control system, you could run the pump four hours on, four hours off, and you could do that throughout the day and night. That should maintain 85 degrees.
When asking can you leave pool heater on overnight, the answer is definitely no if you have no swimming pool cover. So unless you have money to burn, it’s best not to run your heater at night on an uncovered swimming pool.
How much heat does a pool lose overnight?
Pools that are not covered can lose 4 degrees F to 5 degrees F overnight in most parts of the country. With a cover, you can reduce that heat loss by 50% or more. So without a heater you should be able to use your pool in the afternoons and early evenings in the warmest part of the season.
How long does a pool stay heated?
The required time it takes your pool to heat up depends on several factors such as heat pump size, air temperature, pool size, and material used to heat the pool. However, the overall time it takes a pool to heat up usually lies between 24 to 72 hours, which heats the pool by 20°F.