How long will it take to heat your pool this spring in st George?
- Brock Palisi
- Feb 8
- 3 min read
Heating a pool takes patience. You are not just flipping a switch; you are warming thousands of gallons of water. If you live in St. George, UT, and want to enjoy your pool comfortably this spring, understanding how long it takes to heat your pool is key. Several factors influence the heating time, from the starting water temperature to the type of heater you use. This post breaks down what affects pool heating times and offers practical tips to get your pool ready for swimming sooner.
What affects how long it takes to heat your pool?
Starting water temperature
In St. George, pools left unused during winter often start at temperatures between 40°F and 50°F. The colder the water, the longer it takes to reach a comfortable swimming temperature. For example, if your pool water is at 45°F, it needs to warm up about 30°F to reach 75°F, which is on the lower end of comfortable swimming temperatures.
Target temperature
Most swimmers find water between 75°F and 82°F comfortable. The higher your target temperature, the longer it will take to heat the pool. If you want to swim at 82°F instead of 75°F, expect the heating time to increase accordingly.
Pool size
Pool size directly impacts heating time because larger pools hold more water. A typical residential pool in St. George holds between 15,000 and 25,000 gallons. Heating 25,000 gallons takes longer than heating 15,000 gallons, even with the same heater.
Heater type
The type of heater you use makes a big difference:
Gas heaters heat water quickly. They can raise the temperature by about 1 to 2 degrees Fahrenheit per day without a cover.
Heat pumps are slower but more energy-efficient. They typically raise water temperature by 0.5 to 1.5 degrees Fahrenheit per day.
Solar heaters depend on sunlight and weather. They warm the pool slowly over several weeks and work best with a solar cover.
Circulation and pump runtime
Heaters only work when water is moving through the system. Running your pool pump longer during heating cycles helps distribute warm water evenly and speeds up heating. If the pump runs only a few hours a day, heating will take longer.
Nighttime heat loss
Cold nights, wind, and lack of a pool cover cause heat to escape quickly. In St. George, spring nights can still be chilly, so heat loss is a real challenge. Using a pool cover reduces heat loss and helps maintain warmer water overnight.
Realistic heating timelines for spring in St. George
Here are average heating times for a 15,000 to 25,000-gallon pool in St. George, based on heater type and cover use:
Gas heater without a cover
Heats about 1 to 2°F per day
Takes 2 to 4 weeks to reach comfortable temperatures
Gas heater with a pool cover
Heats about 2 to 4°F per day
Takes 7 to 14 days to warm up
Heat pump
Heats about 0.5 to 1.5°F per day
Takes 3 to 5 weeks to reach target temperature
Solar heating only
Slow and weather-dependent
Can take several weeks to warm the pool
These timelines assume you run your pump and heater consistently during the heating period.
Tips to heat your pool faster and save money
Start heating early
Begin heating your pool before you plan to swim. Starting early means your pool will be ready when the weather warms up.
Use a pool cover
A pool cover traps heat and reduces evaporation. It can double your heating speed and cut energy costs. Even a simple solar cover makes a big difference.
Increase pump runtime
Run your pool pump longer while heating. More circulation means more water passes through the heater, warming faster.
Maintain your equipment
Clean and maintain your heater, filter, and circulation system. A well-maintained system runs efficiently and heats your pool faster.
Size your heater correctly
Make sure your heater matches your pool size. An undersized heater will struggle to warm a large pool, increasing heating time and energy use.
What to expect when heating your pool in St. George
Spring in St. George offers plenty of sunshine but can still have cool nights. Expect heating your pool to take anywhere from one to five weeks depending on your heater and how you manage heat loss. Using a gas heater with a cover is the fastest way to get your pool ready. Heat pumps and solar heating are more energy-efficient but require more patience.
Planning ahead and using a pool cover will save you money and get you swimming sooner. Remember, heating a pool is a process that requires time and care. With the right approach, you can enjoy warm water all spring and summer.
Comments