Filter Repair & Sand Changes
How often should the sand in a swimming pool filter be changed? We recommend changing the sand every five years for commercial properties and five to ten years for residential. Filter sand has been ground to a size of .45 to .55 mm in diameter and is very rough when new. This roughness is what makes the sand efficient at filtering out the particles of dirt in your water.
As this roughness is smoothed out - as stones in a stream wear smooth over time - your filter's efficiency goes down. This means that your system has to run more frequently to accomplish the same task.
This can increase the amount of sanitizer used, thereby increasing your chemical costs. In addition, we have found that after five years, your sand has worn enough to allow dirt to penetrate so deep that normal backwashing doesn't clean it completely. The result is shorter filter cycles which require more frequent backwashing.
You can significantly reduce swimming pool heating costs by using a pool cover.
How They Work
Swimming pools lose energy in a variety of ways, but evaporation is by far the largest source of energy loss. Evaporating water requires tremendous amounts of energy. It only takes 1 Btu (British thermal unit) to raise 1 pound of water 1 degree, but each pound of 80ºF water that evaporates takes a whopping 1,048 Btu of heat out of the pool.
This pie chart shows outdoor pool energy loss characteristics: there's a 70% energy loss from evaporation, 20% from radiation to sky, and 10% to ground and other.
The evaporation rate from an outdoor pool varies depending on the pool's temperature, air temperature and humidity, and the wind speed at the pool surface. The higher the pool temperature and wind speed and the lower the humidity, the greater the evaporation rate. In windy areas, you can add a windbreak—trees, shrubs, or a fence—to reduce evaporation. The windbreak needs to be high enough and close enough to the pool that it doesn't create turbulence over the pool, which will increase evaporation. You also don't want the windbreak to shade the pool from the sun, which helps heat it.
Why a Safety Cover?
Safety covers not only help with reducing evaporation, but also help with keeping the pool clean from loose debris that would fly in otherwise if not covered. Let's face it, cleaning a pool requires time. In some instances we have emergencies, losses as well as financial burdens that affect the clarity of the pool and the swim-ability. For 5 months out of the year, many aren't swimming in their pools unless it has a heater and the weather is nice. Otherwise, you're really starting to loose money in chemicals alone.
Chlorine loss is one of the top-leading expenses when owning a pool. A safety cover from CoverStar® is one of the best solutions in keeping your chlorine consumption low and your savings high!